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Posted to commits@struts.apache.org by lu...@apache.org on 2017/07/24 07:43:24 UTC
[09/51] [abbrv] [partial] struts-site git commit: Adds exported docs
http://git-wip-us.apache.org/repos/asf/struts-site/blob/124e36c4/content/docs/hello-world-using-struts-2.html
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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+ <link type="text/css" rel="stylesheet" href="https://struts.apache.org/css/default.css">
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+ <script type="text/javascript">
+ SyntaxHighlighter.defaults['toolbar'] = false;
+ SyntaxHighlighter.all();
+ </script>
+ <script type="text/javascript" language="javascript">
+ var hide = null;
+ var show = null;
+ var children = null;
+
+ function init() {
+ /* Search form initialization */
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+ if (form != null) {
+ form.elements['domains'].value = location.hostname;
+ form.elements['sitesearch'].value = location.hostname;
+ }
+
+ /* Children initialization */
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+ show = document.getElementById('show');
+ children = document.all != null ?
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+ children.style.display = 'none';
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+ function hideChildren() {
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+ show.style.display = 'inline';
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+ <title>Hello World Using Struts 2</title>
+</head>
+<body onload="init()">
+<table border="0" cellpadding="2" cellspacing="0" width="100%">
+ <tr class="topBar">
+ <td align="left" valign="middle" class="topBarDiv" align="left" nowrap>
+ <a href="home.html">Home</a> > <a href="tutorials.html">Tutorials</a> > <a href="getting-started.html">Getting Started</a> > <a href="how-to-create-a-struts-2-web-application.html">How To Create A Struts 2 Web Application</a> > <a href="create-struts-2-web-application-with-artifacts-in-web-inf-lib-and-use-ant-to-build-the-application.html">Create Struts 2 Web Application With Artifacts In WEB-INF lib and Use Ant To Build The Application</a> > <a href="hello-world-using-struts-2.html">Hello World Using Struts 2</a>
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+ <input type="text" name="q" maxlength="255" value="" />
+ <input type="submit" name="btnG" value="Google Search" />
+ </form>
+ </td>
+ </tr>
+</table>
+
+<div id="PageContent">
+ <div class="pageheader" style="padding: 6px 0px 0px 0px;">
+ <!-- We'll enable this once we figure out how to access (and save) the logo resource -->
+ <!--img src="/wiki/images/confluence_logo.gif" style="float: left; margin: 4px 4px 4px 10px;" border="0"-->
+ <div style="margin: 0px 10px 0px 10px" class="smalltext">Apache Struts 2 Documentation</div>
+ <div style="margin: 0px 10px 8px 10px" class="pagetitle">Hello World Using Struts 2</div>
+
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+
+ <div class="pagecontent">
+ <div class="wiki-content">
+ <div id="ConfluenceContent"><p>When you click on a hyperlink or submit an HTML form in a Struts 2 web application, the input is not sent to another server page, but to a Java class that you provide. These classes are called Actions. After the Action fires, a Result selects a resource to render the response. The resource is generally a server page, but it can also be a PDF file, an Excel spreadsheet, or a Java applet window.</p><p>Suppose you want to create a simple "Hello World" example that displays a welcome message. After setting up an empty basic Struts 2 web application (see <a shape="rect" href="how-to-create-a-struts-2-web-application.html">How To Create A Struts 2 Web Application</a>), to create a "Hello World" example, you need to do four things:</p><ol><li>Create a class to store the welcome message (the model)</li><li>Create a server page to present the message (the view)</li><li>Create an Action class to control the interaction between the user, the model, an
d the view (the controller)</li><li><p>Create a mapping (struts.xml) to couple the Action class and view</p><div class="confluence-information-macro confluence-information-macro-tip"><span class="aui-icon aui-icon-small aui-iconfont-approve confluence-information-macro-icon"></span><div class="confluence-information-macro-body"><p>By creating these components, we are separating the work flow into three well-known concerns: the View, the Model, and the Controller. Separating concerns makes it easier to manage applications as they become more complex.</p></div></div><p>Let's look at an example model class, Action, server page, and mapping. If you like, fire up your Java IDE, and enter the code as we go.</p><div class="confluence-information-macro confluence-information-macro-information"><span class="aui-icon aui-icon-small aui-iconfont-info confluence-information-macro-icon"></span><div class="confluence-information-macro-body"><p>This tutorial assumes you've completed the <a shape="
rect" href="how-to-create-a-struts-2-web-application.html">How To Create A Struts 2 Web Application</a> tutorial and have a working basic Struts project. The example code for this tutorial, helloworld, is available for checkout from the <br clear="none"> Struts 2 GitHub repository at <a shape="rect" class="external-link" href="https://github.com/apache/struts-examples" rel="nofollow">https://github.com/apache/struts-examples</a>. The example projects use Maven<br clear="none"> to manage the artifact dependencies and to build the .war files.</p></div></div></li></ol><h2 id="HelloWorldUsingStruts2-TheCode">The Code</h2><p>Let's modify either the basic_struts project to add a model class to store our message, a view that displays our message, an Action class to act as the controller, and a configuration that ties everything together.</p><div class="confluence-information-macro confluence-information-macro-tip"><span class="aui-icon aui-icon-small aui-iconfont-approve confluence-informa
tion-macro-icon"></span><div class="confluence-information-macro-body"><p>The <a shape="rect" class="external-link" href="http://struts.apache.org/mail.html">Struts 2 user mailing list</a> is an excellent place to get help. If you are having a problem getting this application to work search the Struts 2 mailing list. If you don't find an answer to your problem, post a question on the mailing list.</p></div></div><h3 id="HelloWorldUsingStruts2-Step1-CreateTheModelClassMessageStore.java">Step 1 - Create The Model Class MessageStore.java</h3><p>If you're using the Basic_Struts2_Ant project to start with create the MessageStore class in the src folder and if you're using the Basic_Struts2_Mvn class create the MessageStore class in src/main/java. Be sure to note the package statement below.</p><div class="confluence-information-macro confluence-information-macro-information"><span class="aui-icon aui-icon-small aui-iconfont-info confluence-information-macro-icon"></span><div class="confl
uence-information-macro-body"><p>Note that in the code shown below the JavaDoc comments are omitted. In the download example, JavaDoc comments are included.</p></div></div><div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>MessageStore.java</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">package org.apache.struts.helloworld.model;
+
+public class MessageStore {
+
+ private String message;
+
+ public MessageStore() {
+
+ setMessage("Hello Struts User");
+ }
+
+ public String getMessage() {
+
+ return message;
+ }
+
+ public void setMessage(String message) {
+
+ this.message = message;
+ }
+
+}
+</pre>
+</div></div><p>In the model class above note the use of public set and get methods to allow access to the private message String attribute. The Struts 2 framework requires that objects you want to expose to the view (HelloWorld.jsp) follow the <a shape="rect" class="external-link" href="http://en.wikipedia.org/wiki/JavaBean#JavaBean_conventions" rel="nofollow">JavaBean-style conventions</a>.</p><h3 id="HelloWorldUsingStruts2-Step2-CreateTheActionClassHelloWorldAction.java">Step 2 - Create The Action Class HelloWorldAction.java</h3><p>We need an Action class to act as the Controller. The Action class responds to a user action (in this example that action will be clicking an HTML hyperlink and sending a specific URL to the Servlet container). One or more of the Action class's methods are executed and a String result is returned. Based on the value of the result, a specific view page (in this example that view page is HelloWorld.jsp) is rendered.</p><p>Note the package and import state
ments below.</p><div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>HelloWorldAction.java</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">package org.apache.struts.helloworld.action;
+
+import org.apache.struts.helloworld.model.MessageStore;
+import com.opensymphony.xwork2.ActionSupport;
+
+public class HelloWorldAction extends ActionSupport {
+
+ private static final long serialVersionUID = 1L;
+
+ private MessageStore messageStore;
+
+ public String execute() throws Exception {
+
+ messageStore = new MessageStore() ;
+ return SUCCESS;
+ }
+
+ public MessageStore getMessageStore() {
+ return messageStore;
+ }
+
+ public void setMessageStore(MessageStore messageStore) {
+ this.messageStore = messageStore;
+ }
+
+}
+</pre>
+</div></div><p>The Struts 2 framework will create an object of the <code>HelloWorldAction</code> class and call the execute method in response to a user's action (clicking on a hyperlink that sends a specific URL to the Servlet container).</p><p>In this example, the execute method creates an object of class <code>MessageStore</code> and then returns the String constant <code>SUCCESS</code>.</p><p>Note also the public getter and setter methods for the private <code>MessageStore</code> object. Since we want to make the <code>MessageStore</code> object available to the view page, <code>HelloWorld.jsp</code> we need to follow the <a shape="rect" class="external-link" href="http://en.wikipedia.org/wiki/JavaBean#JavaBean_conventions" rel="nofollow">JavaBean-style</a> of providing get and set methods.</p><h3 id="HelloWorldUsingStruts2-Step3-CreateTheViewHelloWorld.jsp">Step 3 - Create The View HelloWorld.jsp</h3><p>We need a server page to present the message that
is stored in the model class <code>MessageStore</code>. Create the below JSP in the <code>WebContent</code> folder (if using Ant) or in <code>src/main/webapp</code> (if using Maven).</p><div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>HelloWorld.jsp</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: html; gutter: false; theme: Default" style="font-size:12px;"><%@ page language="java" contentType="text/html; charset=ISO-8859-1" pageEncoding="ISO-8859-1"%>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+ <head>
+ <meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+ <title>Hello World!</title>
+ </head>
+
+ <body>
+ <h2><s:property value="messageStore.message" /></h2>
+ </body>
+</html>
+</pre>
+</div></div><p>The taglib directive tells the Servlet container that this page will be using the Struts 2 tags and that these tags will be preceded by an <code>s</code>.</p><p>The <code><s:property></code> tag displays the value returned by calling the method <code>getMessageStore</code> of the <code>HelloWorldAction</code> controller class. That method returns a <code>MessageStore</code> object. By adding the <code>.message</code> onto the messageStore part of the value attribute we are telling the Struts 2 framework to call the <code>getMessage</code> method of that <code>MessageStore</code> object. The <code>getMessage</code> method of class <code>MessageStore</code> returns a String. It is that String that will be displayed by the <code><s:property></code> tag.</p><p>We'll learn more about tags in the next tutorial. See the <a shape="rect" href="struts-tags.html">Struts Tags</a> for more information about tags.</p><h3
id="HelloWorldUsingStruts2-Step4-AddTheStrutsConfigurationInstruts.xml">Step 4 - Add The Struts Configuration In struts.xml</h3><p>We need a mapping to tie the URL, the <code>HelloWorldAction</code> class (controller), and <br clear="none"> the <code>HelloWorld.jsp</code> (the view) together. The mapping tells the Struts 2 framework which class will respond to the user's action (the URL), which method of that class will be executed, and what view to render based on the String result that method returns.</p><p>Edit the <code>struts.xml</code> file (in the Mvn project that file is in the src/main/resources folder) to add the action mapping. Place the action node (action name="hello") between the opening and closing package node, just after the action mapping with the name="index". Your complete struts.xml should look like:</p><div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;bor
der-bottom-style: solid;"><b>struts.xml</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: xml; gutter: false; theme: Default" style="font-size:12px;"><?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE struts PUBLIC
+ "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
+ "http://struts.apache.org/dtds/struts-2.0.dtd">
+
+<struts>
+
+ <constant name="struts.devMode" value="true" />
+
+ <package name="basicstruts2" extends="struts-default">
+ <action name="index">
+ <result>/index.jsp</result>
+ </action>
+
+ <action name="hello" class="org.apache.struts.helloworld.action.HelloWorldAction" method="execute">
+ <result name="success">/HelloWorld.jsp</result>
+ </action>
+ </package>
+</struts>
+</pre>
+</div></div><h3 id="HelloWorldUsingStruts2-Step5-CreateTheURLAction">Step 5 - Create The URL Action</h3><p>In index.jsp (see WebContent folder for Ant project and src/main/webapp for Mvn project) let's add an Action URL the user can click on to tell the Struts 2 framework to run the execute method of the HelloWorldAction class and render the HelloWorld.jsp view.</p><p>First add the taglib directive at the top of the jsp <code><%@ taglib prefix="s" uri="/struts-tags" %></code>. Next add this p tag <code><p><a href="<s:url action='hello'/>">Hello World</a></p></code> after the h1 tag. Your new index.jsp should look like:</p><div class="code panel pdl" style="border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;"><b>index.jsp</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: html; gutter: false; theme: Default" style="font-size:12px;"><%@ page language="java" contentType="text/html; charset=ISO-8859-1"
+ pageEncoding="ISO-8859-1"%>
+<%@ taglib prefix="s" uri="/struts-tags" %>
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<html>
+<head>
+<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
+<title>Basic Struts 2 Application - Welcome</title>
+</head>
+<body>
+<h1>Welcome To Struts 2!</h1>
+<p><a href="<s:url action='hello'/>">Hello World</a></p>
+</body>
+</html>
+
+</pre>
+</div></div><p>The Struts url tag creates the URL with an action of hello. The hello action was mapped to the HelloWorldAction class and its execute method. When the user clicks on the above URL it will cause the Struts 2 framework to run the execute method of the HelloWorldAction class. After that method returns the String success, the view page HelloWorld.jsp will be rendered.</p><h3 id="HelloWorldUsingStruts2-Step6-BuildtheWARFileandRunTheApplication">Step 6 - Build the WAR File and Run The Application</h3><p>Execute mvn clean package to create the war file.</p><p>Copy the war file to your Servlet container. After your Servlet container successfully deploys the war file go to this URL <a shape="rect" class="external-link" href="http://localhost:8080/helloworld/index.action" rel="nofollow">http://localhost:8080/helloworld/index.action</a> where you should see the following:<br clear="none"> <span class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image" src="
hello-world-using-struts-2.data/Struts2HelloWorld.png"></span></p><p>Click on the Hello World link and you should get the HelloWorld.jsp page:</p><p><span class="confluence-embedded-file-wrapper"><img class="confluence-embedded-image" src="hello-world-using-struts-2.data/Hello.png"></span></p><h3 id="HelloWorldUsingStruts2-GettingHelp">Getting Help</h3><p>The <a shape="rect" class="external-link" href="http://struts.apache.org/mail.html">Struts 2 user mailing list</a> is an excellent place to get help. If you are having a problem getting this application to work search the Struts 2 mailing list. If you don't find an answer to your problem, post a question on the mailing list.</p><h2 id="HelloWorldUsingStruts2-HowtheCodeWorks">How the Code Works</h2><p>Your browser sends to the web server a request for the URL <a shape="rect" class="external-link" href="http://localhost:8080/Hello_World_Struts2_Ant/hello.action" rel="nofollow">http://localhost:8080/Hello_World_Struts2_Ant/hello.actio
n</a>.</p><ol><li>The container receives from the web server a request for the resource <code>hello.action</code>. According to the settings loaded from the <a shape="rect" href="webxml.html">web.xml</a>, the container finds that all requests are being routed to <code>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</code>, including the <code>*.action</code> requests. The StrutsPrepareAndExecuteFilter is the entry point into the framework.</li><li>The framework looks for an action mapping named "hello", and it finds that this mapping corresponds to the class "HelloWorldAction". The framework instantiates the Action and calls the Action's <code>execute</code> method.</li><li>The <code>execute</code> method creates the MessageStore object and returns <code>SUCCESS</code>. The framework checks the action mapping to see what page to load if <code>SUCCESS</code> is returned. The framework tells the container to render as the response to the request, the resource <co
de>HelloWorld.jsp</code>.</li><li>As the page <code>HelloWorld.jsp</code> is being processed, the <code><s:property value="messageStore.message" /></code> tag calls the getter <code>getMessageStore</code> of the <code>HelloWorld</code> Action and then calls the <code>getMessage</code> of the MessageStore object returned by <code>getMessageStore</code>, and the tag merges into the response the value of the message attribute.</li><li>A pure HTML response is sent back to the browser.</li></ol><h2 id="HelloWorldUsingStruts2-WhattoRemember">What to Remember</h2><p>The framework uses Actions to process HTML forms and other requests. The <code>Action</code> class returns a result-name such as <code>SUCCESS</code>, <code>ERROR</code>, or <code>INPUT</code>. Based on the mappings loaded from the <code>struts.xml</code>, a given result-name may select a page (as in this example), another action, or some other web resource (image, PDF).</p><p>When a server page is rendered, most often it
will include dynamic data provided by the Action. To make it easy to display dynamic data, the framework provides a set of tags that can be used along with HTML markup to create a server page.</p><div class="table-wrap"><table class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" class="confluenceTh"><p>Next</p></th><td colspan="1" rowspan="1" class="confluenceTd"><p>Onward to <a shape="rect" href="using-struts-2-tags.html">Using Struts 2 Tags</a></p></td></tr><tr><th colspan="1" rowspan="1" class="confluenceTh"><p>Prev</p></th><td colspan="1" rowspan="1" class="confluenceTd"><p>Return to <a shape="rect" href="how-to-create-a-struts-2-web-application.html">How To Create A Struts 2 Web Application</a></p></td></tr></tbody></table></div></div>
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+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!--
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+"License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
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+KIND, either express or implied. See the License for the
+specific language governing permissions and limitations
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+-->
+<html>
+<head>
+ <link type="text/css" rel="stylesheet" href="https://struts.apache.org/css/default.css">
+ <style type="text/css">
+ .dp-highlighter {
+ width:95% !important;
+ }
+ </style>
+ <style type="text/css">
+ .footer {
+ background-image: url('https://cwiki.apache.org/confluence/images/border/border_bottom.gif');
+ background-repeat: repeat-x;
+ background-position: left top;
+ padding-top: 4px;
+ color: #666;
+ }
+ </style>
+ <link href='https://struts.apache.org/highlighter/style/shCoreStruts.css' rel='stylesheet' type='text/css' />
+ <link href='https://struts.apache.org/highlighter/style/shThemeStruts.css' rel='stylesheet' type='text/css' />
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+ <script src='https://struts.apache.org/highlighter/js/shBrushPlain.js' type='text/javascript'></script>
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+ <script src='https://struts.apache.org/highlighter/js/shBrushBash.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushCss.js' type='text/javascript'></script>
+ <script type="text/javascript">
+ SyntaxHighlighter.defaults['toolbar'] = false;
+ SyntaxHighlighter.all();
+ </script>
+ <script type="text/javascript" language="javascript">
+ var hide = null;
+ var show = null;
+ var children = null;
+
+ function init() {
+ /* Search form initialization */
+ var form = document.forms['search'];
+ if (form != null) {
+ form.elements['domains'].value = location.hostname;
+ form.elements['sitesearch'].value = location.hostname;
+ }
+
+ /* Children initialization */
+ hide = document.getElementById('hide');
+ show = document.getElementById('show');
+ children = document.all != null ?
+ document.all['children'] :
+ document.getElementById('children');
+ if (children != null) {
+ children.style.display = 'none';
+ show.style.display = 'inline';
+ hide.style.display = 'none';
+ }
+ }
+
+ function showChildren() {
+ children.style.display = 'block';
+ show.style.display = 'none';
+ hide.style.display = 'inline';
+ }
+
+ function hideChildren() {
+ children.style.display = 'none';
+ show.style.display = 'inline';
+ hide.style.display = 'none';
+ }
+ </script>
+ <title>Hello World</title>
+</head>
+<body onload="init()">
+<table border="0" cellpadding="2" cellspacing="0" width="100%">
+ <tr class="topBar">
+ <td align="left" valign="middle" class="topBarDiv" align="left" nowrap>
+ <a href="home.html">Home</a> > <a href="tutorials.html">Tutorials</a> > <a href="bootstrap.html">Bootstrap</a> > <a href="hello-world.html">Hello World</a>
+ </td>
+ <td align="right" valign="middle" nowrap>
+ <form name="search" action="https://www.google.com/search" method="get">
+ <input type="hidden" name="ie" value="UTF-8" />
+ <input type="hidden" name="oe" value="UTF-8" />
+ <input type="hidden" name="domains" value="" />
+ <input type="hidden" name="sitesearch" value="" />
+ <input type="text" name="q" maxlength="255" value="" />
+ <input type="submit" name="btnG" value="Google Search" />
+ </form>
+ </td>
+ </tr>
+</table>
+
+<div id="PageContent">
+ <div class="pageheader" style="padding: 6px 0px 0px 0px;">
+ <!-- We'll enable this once we figure out how to access (and save) the logo resource -->
+ <!--img src="/wiki/images/confluence_logo.gif" style="float: left; margin: 4px 4px 4px 10px;" border="0"-->
+ <div style="margin: 0px 10px 0px 10px" class="smalltext">Apache Struts 2 Documentation</div>
+ <div style="margin: 0px 10px 8px 10px" class="pagetitle">Hello World</div>
+
+ <div class="greynavbar" align="right" style="padding: 2px 10px; margin: 0px;">
+ <a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=13924">
+ <img src="https://cwiki.apache.org/confluence/images/icons/notep_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Edit Page"></a>
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+
+ <a href="https://cwiki.apache.org/confluence/pages/listpages.action?key=WW">
+ <img src="https://cwiki.apache.org/confluence/images/icons/browse_space.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Browse Space"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/listpages.action?key=WW">Browse Space</a>
+
+ <a href="https://cwiki.apache.org/confluence/pages/createpage.action?spaceKey=WW&fromPageId=13924">
+ <img src="https://cwiki.apache.org/confluence/images/icons/add_page_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Add Page"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/createpage.action?spaceKey=WW&fromPageId=13924">Add Page</a>
+
+ <a href="https://cwiki.apache.org/confluence/pages/createblogpost.action?spaceKey=WW&fromPageId=13924">
+ <img src="https://cwiki.apache.org/confluence/images/icons/add_blogentry_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Add News"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/createblogpost.action?spaceKey=WW&fromPageId=13924">Add News</a>
+ </div>
+ </div>
+
+ <div class="pagecontent">
+ <div class="wiki-content">
+ <div id="ConfluenceContent"><p>When you submit a HTML form to the framework, the input is not sent to another server page, but to a Java class that you provide. These classes are called Actions. After the Action fires, a Result selects a resource to render the response. The resource is generally a server page, but it can also be a PDF file, an Excel spreadsheet, or a Java applet window.</p>
+
+<p>Suppose you want to create a simple "Hello World" example that displays a <a shape="rect" class="external-link" href="http://www.PlanetStruts.org/struts2-blank/example/HelloWorld.action" rel="nofollow">welcome message</a>. After setting up an empty "tutorial" web application (see <a shape="rect" href="ready-set-go.html">Ready, Set, Go!</a>), to create a "Hello World" example, you need to do three things:</p>
+<ol><li>Create a server page to present the messages</li><li>Create an Action class to create the message</li><li>Create a mapping to couple the action and page
+<div class="confluence-information-macro confluence-information-macro-tip"><span class="aui-icon aui-icon-small aui-iconfont-approve confluence-information-macro-icon"></span><div class="confluence-information-macro-body"><p>By creating these components, we are separating the workflow into three well-known concerns: the View, the Model, and the Controller. Separating concerns makes it easier to manage applications as they become more complex.</p></div></div>
+Let's look at an example Action, server page, and mapping. If you like, fire up your IDE, and enter the code as we go.</li></ol>
+
+
+<h2 id="HelloWorld-TheCode">The Code</h2>
+
+<p>First, we need a server page to present the message.</p>
+<div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>HelloWorld.jsp</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: html; gutter: false; theme: Default" style="font-size:12px;">
+<%@ taglib prefix="s" uri="/struts-tags" %>
+
+<html>
+ <head>
+ <title>Hello World!</title>
+ </head>
+ <body>
+ <h2><s:property value="message" /></h2>
+ </body>
+</html>
+</pre>
+</div></div>
+<p>Second, we need an Action class to create the message.</p>
+<div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>HelloWorld.java</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">
+package tutorial;
+import com.opensymphony.xwork2.ActionSupport;
+public class HelloWorld extends ActionSupport {
+
+ public static final String MESSAGE = "Struts is up and running ...";
+
+ public String execute() throws Exception {
+ setMessage(MESSAGE);
+ return SUCCESS;
+ }
+
+ private String message;
+
+ public void setMessage(String message){
+ this.message = message;
+ }
+
+ public String getMessage() {
+ return message;
+ }
+}
+</pre>
+</div></div>
+<p>Third, we need a mapping to tie it all together.</p>
+
+<p>Edit the <code>struts.xml</code> file to add the <code>HelloWorld</code> mapping.</p>
+
+<div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>struts.xml</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: xml; gutter: false; theme: Default" style="font-size:12px;">
+<!DOCTYPE struts PUBLIC
+ "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
+ "http://struts.apache.org/dtds/struts-2.0.dtd">
+<struts>
+ <package name="tutorial" extends="struts-default">
+ <action name="HelloWorld" class="tutorial.HelloWorld">
+ <result>/HelloWorld.jsp</result>
+ </action>
+ <!-- Add your actions here -->
+ </package>
+</struts>
+</pre>
+</div></div>
+<p>Go ahead and try it now! Deploy the application and open <a shape="rect" class="external-link" href="http://localhost:8080/tutorial/HelloWorld.action" rel="nofollow">http://localhost:8080/tutorial/HelloWorld.action</a> and see what happens! You should see a page with the title "Hello World!" and the message "Struts is up and running!". </p>
+
+<div class="confluence-information-macro confluence-information-macro-warning"><p class="title">Don't forget</p><span class="aui-icon aui-icon-small aui-iconfont-error confluence-information-macro-icon"></span><div class="confluence-information-macro-body">
+<p>Compile your Action to <code>WEB-INF/classes</code> and restart your container if necessary. If you are using maven, you can just run:</p>
+
+<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">
+> mvn jetty:run
+</pre>
+</div></div></div></div>
+
+<h2 id="HelloWorld-HowtheCodeWorks">How the Code Works</h2>
+
+<p>Your browser sends to the web server a request for the URL <a shape="rect" class="external-link" href="http://localhost:8080/tutorial/HelloWorld.action" rel="nofollow">http://localhost:8080/tutorial/HelloWorld.action</a>.</p>
+<ol><li>The container receives from the web server a request for the resource <code>HelloWorld.action</code>. According to the settings loaded from the <a shape="rect" href="webxml.html">web.xml</a>, the container finds that all requests are being routed to <code>org.apache.struts2.dispatcher.FilterDispatcher</code>, including the <code>*.action</code> requests. The FilterDispatcher is the entry point into the framework.</li><li>The framework looks for an action mapping named "HelloWorld", and it finds that this mapping corresponds to the class "HelloWorld". The framework instantiates the Action and calls the Action's <code>execute</code> method.</li><li>The <code>execute</code> method sets the message and returns <code>SUCCESS</code>. The framework checks the action mapping to see what page to load if <code>SUCCESS</code> is returned. The framework tells the container to render as the response to the request, the resource <code>HelloWorld.jsp</code>.</li><li>As the page <code>Hello
World.jsp</code> is being processed, the <code><s:property value="message" /></code> tag calls the getter <code>getMessage</code> of the <code>HelloWorld</code> Action, and the tag merges into the response the value of the message.</li><li>A pure HTML response is sent back to the browser.</li></ol>
+
+
+<p>For detailed information on Struts 2 architecture see <a shape="rect" href="big-picture.html">Big Picture</a>.</p>
+
+<h2 id="HelloWorld-TestingActions">Testing Actions</h2>
+
+<p>Testing an Action is easy. Here's a test for our Hello World Action.</p>
+
+<div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>HelloWorldTest.java</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">
+package tutorial;
+import junit.framework.TestCase;
+import com.opensymphony.xwork2.Action;
+import com.opensymphony.xwork2.ActionSupport;
+
+public class HelloWorldTest extends TestCase {
+ public void testHelloWorld() throws Exception {
+
+ HelloWorld hello_world = new HelloWorld();
+ String result = hello_world.execute();
+
+ assertTrue("Expected a success result!",
+ ActionSupport.SUCCESS.equals(result));
+
+ assertTrue("Expected the default message!",
+ HelloWorld.MESSAGE.equals(hello_world.getMessage()));
+
+ }
+}
+</pre>
+</div></div>
+
+<h2 id="HelloWorld-WhattoRemember">What to Remember</h2>
+
+<p>The framework uses Actions to process HTML forms and other requests. The <code>Action</code> class returns a result-name such as <code>SUCCESS</code>, <code>ERROR</code>, or <code>INPUT</code>. Based on the mappings loaded from the <code>struts.xml</code>, a given result-name may select a page (as in this example), another action, or some other web resource (image, PDF). </p>
+
+<p>When a server page is rendered, most often it will include dynamic data provided by the Action. To make it easy to display dynamic data, the framework provides a set of tags that can be used along with HTML markup to create a server page.</p>
+
+<div class="table-wrap"><table class="confluenceTable"><tbody><tr><th colspan="1" rowspan="1" class="confluenceTh"><p> Next </p></th><td colspan="1" rowspan="1" class="confluenceTd"><p> Onward to <a shape="rect" href="using-tags.html">Using Tags</a> </p></td></tr><tr><th colspan="1" rowspan="1" class="confluenceTh"><p> Prev </p></th><td colspan="1" rowspan="1" class="confluenceTd"><p> Return to <a shape="rect" href="ready-set-go.html">Ready, Set, Go!</a> </p></td></tr></tbody></table></div></div>
+ </div>
+
+
+ </div>
+</div>
+<div class="footer">
+ Generated by CXF SiteExporter
+</div>
+</body>
+</html>
http://git-wip-us.apache.org/repos/asf/struts-site/blob/124e36c4/content/docs/hibernateandspringenabledexecuteandwaitinterceptor.html
----------------------------------------------------------------------
diff --git a/content/docs/hibernateandspringenabledexecuteandwaitinterceptor.html b/content/docs/hibernateandspringenabledexecuteandwaitinterceptor.html
new file mode 100644
index 0000000..e86dea6
--- /dev/null
+++ b/content/docs/hibernateandspringenabledexecuteandwaitinterceptor.html
@@ -0,0 +1,248 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
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+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
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+KIND, either express or implied. See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+<html>
+<head>
+ <link type="text/css" rel="stylesheet" href="https://struts.apache.org/css/default.css">
+ <style type="text/css">
+ .dp-highlighter {
+ width:95% !important;
+ }
+ </style>
+ <style type="text/css">
+ .footer {
+ background-image: url('https://cwiki.apache.org/confluence/images/border/border_bottom.gif');
+ background-repeat: repeat-x;
+ background-position: left top;
+ padding-top: 4px;
+ color: #666;
+ }
+ </style>
+ <link href='https://struts.apache.org/highlighter/style/shCoreStruts.css' rel='stylesheet' type='text/css' />
+ <link href='https://struts.apache.org/highlighter/style/shThemeStruts.css' rel='stylesheet' type='text/css' />
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+ <script src='https://struts.apache.org/highlighter/js/shBrushJava.js' type='text/javascript'></script>
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+ <script src='https://struts.apache.org/highlighter/js/shBrushGroovy.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushBash.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushCss.js' type='text/javascript'></script>
+ <script type="text/javascript">
+ SyntaxHighlighter.defaults['toolbar'] = false;
+ SyntaxHighlighter.all();
+ </script>
+ <script type="text/javascript" language="javascript">
+ var hide = null;
+ var show = null;
+ var children = null;
+
+ function init() {
+ /* Search form initialization */
+ var form = document.forms['search'];
+ if (form != null) {
+ form.elements['domains'].value = location.hostname;
+ form.elements['sitesearch'].value = location.hostname;
+ }
+
+ /* Children initialization */
+ hide = document.getElementById('hide');
+ show = document.getElementById('show');
+ children = document.all != null ?
+ document.all['children'] :
+ document.getElementById('children');
+ if (children != null) {
+ children.style.display = 'none';
+ show.style.display = 'inline';
+ hide.style.display = 'none';
+ }
+ }
+
+ function showChildren() {
+ children.style.display = 'block';
+ show.style.display = 'none';
+ hide.style.display = 'inline';
+ }
+
+ function hideChildren() {
+ children.style.display = 'none';
+ show.style.display = 'inline';
+ hide.style.display = 'none';
+ }
+ </script>
+ <title>HibernateAndSpringEnabledExecuteAndWaitInterceptor</title>
+</head>
+<body onload="init()">
+<table border="0" cellpadding="2" cellspacing="0" width="100%">
+ <tr class="topBar">
+ <td align="left" valign="middle" class="topBarDiv" align="left" nowrap>
+ <a href="home.html">Home</a> > <a href="faqs.html">FAQs</a> > <a href="cookbook.html">Cookbook</a> > <a href="hibernateandspringenabledexecuteandwaitinterceptor.html">HibernateAndSpringEnabledExecuteAndWaitInterceptor</a>
+ </td>
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+ <form name="search" action="https://www.google.com/search" method="get">
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+ <input type="hidden" name="sitesearch" value="" />
+ <input type="text" name="q" maxlength="255" value="" />
+ <input type="submit" name="btnG" value="Google Search" />
+ </form>
+ </td>
+ </tr>
+</table>
+
+<div id="PageContent">
+ <div class="pageheader" style="padding: 6px 0px 0px 0px;">
+ <!-- We'll enable this once we figure out how to access (and save) the logo resource -->
+ <!--img src="/wiki/images/confluence_logo.gif" style="float: left; margin: 4px 4px 4px 10px;" border="0"-->
+ <div style="margin: 0px 10px 0px 10px" class="smalltext">Apache Struts 2 Documentation</div>
+ <div style="margin: 0px 10px 8px 10px" class="pagetitle">HibernateAndSpringEnabledExecuteAndWaitInterceptor</div>
+
+ <div class="greynavbar" align="right" style="padding: 2px 10px; margin: 0px;">
+ <a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=14042">
+ <img src="https://cwiki.apache.org/confluence/images/icons/notep_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Edit Page"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=14042">Edit Page</a>
+
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+ <img src="https://cwiki.apache.org/confluence/images/icons/browse_space.gif"
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+
+ <a href="https://cwiki.apache.org/confluence/pages/createpage.action?spaceKey=WW&fromPageId=14042">
+ <img src="https://cwiki.apache.org/confluence/images/icons/add_page_16.gif"
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+
+ <a href="https://cwiki.apache.org/confluence/pages/createblogpost.action?spaceKey=WW&fromPageId=14042">
+ <img src="https://cwiki.apache.org/confluence/images/icons/add_blogentry_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Add News"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/createblogpost.action?spaceKey=WW&fromPageId=14042">Add News</a>
+ </div>
+ </div>
+
+ <div class="pagecontent">
+ <div class="wiki-content">
+ <div id="ConfluenceContent">
+<p>Find example code below for an extension of the <em>ExecuteAndWaitInterceptor</em>.</p>
+
+<p>The goal of this code is to allow a background process to execute while having access to the same open Hibernate session object.</p>
+
+<p>The SessionFactory dependency is injected into the <em>OpenSessionExecuteAndWaitInterceptor</em> by Spring. You may use other methods of dependency injection if you are more comfortable with them. By overriding the <em>getNewBackgroundProcess()</em> method, this interceptor uses our custom <em>OpenSessionBackgroundProcess</em> instead of the WebWork default.</p>
+
+<p>Overriding the <em>beforeInvocation()</em> and <em>afterInvocation()</em> methods in the <em>OpenSessionBackgroundProcess</em> ensure that the session will stay open throughout the life of the background process, and any Spring transaction management will also be used.</p>
+
+<p>As this code is heavily dependent on Spring and Hibernate, you shouldn't expect to see it packaged with a WebWork distribution. It does, however, serve as a useful example of extending the <a shape="rect" href="execute-and-wait-interceptor.html">Execute and Wait Interceptor</a></p>
+
+<div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>OpenSessionExecuteAndWaitInterceptor.java</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">
+import net.sf.hibernate.SessionFactory;
+
+import com.opensymphony.webwork.interceptor.BackgroundProcess;
+import com.opensymphony.webwork.interceptor.ExecuteAndWaitInterceptor;
+import com.opensymphony.xwork.ActionInvocation;
+
+
+/**
+ * The OpenSessionExecuteAndWaitInterceptor will obtain a Hibernate
+ * Session Factory from a Spring.
+ *
+ * The session factory will then be passed to the BackgroundProcess,
+ * to open a session, enable Spring's transaction management
+ * capabilities, and bind the Session to the background thread.
+ *
+ */
+public class OpenSessionExecuteAndWaitInterceptor extends ExecuteAndWaitInterceptor {
+
+ SessionFactory sessionFactory;
+
+
+ public SessionFactory getSessionFactory() {
+ return sessionFactory;
+ }
+
+
+ public void setSessionFactory(SessionFactory sessionFactory) {
+ this.sessionFactory = sessionFactory;
+ }
+
+ protected BackgroundProcess getNewBackgroundProcess(String arg0, ActionInvocation arg1, int arg2) {
+ return new OpenSessionBackgroundProcess(arg0, arg1, arg2, sessionFactory);
+ }
+
+}
+</pre>
+</div></div>
+
+<div class="code panel pdl" style="border-style: solid;border-width: 1px;"><div class="codeHeader panelHeader pdl" style="border-bottom-width: 1px;border-bottom-style: solid;"><b>OpenSessionBackgroundProcess.java</b></div><div class="codeContent panelContent pdl">
+<pre class="brush: java; gutter: false; theme: Default" style="font-size:12px;">
+public class OpenSessionBackgroundProcess extends BackgroundProcess {
+
+ SessionFactory sessionFactory;
+ Session openSession;
+ protected boolean initializationComplete = false;
+ private Object lock = new Object(); // used for synchronization
+
+ public OpenSessionBackgroundProcess(String name,
+ ActionInvocation invocation, int threadPriority,
+ SessionFactory factory) {
+ super(name, invocation, threadPriority);
+ this.sessionFactory = factory;
+ initializationComplete = true;
+ synchronized (lock) {
+ lock.notify();
+ }
+ }
+
+ protected void beforeInvocation() throws Exception {
+ while (!initializationComplete) {
+ try {
+ synchronized (lock) {
+ lock.wait(100);
+ }
+ } catch (InterruptedException e) {
+ // behavior ignores cause of re-awakening.
+ }
+ }
+ openSession = SessionFactoryUtils.getSession(sessionFactory, true);
+ openSession.setFlushMode(FlushMode.NEVER);
+ TransactionSynchronizationManager.bindResource(sessionFactory,
+ new SessionHolder(openSession));
+ super.beforeInvocation();
+ }
+
+ protected void afterInvocation() throws Exception {
+ super.afterInvocation();
+ TransactionSynchronizationManager.unbindResource(sessionFactory);
+ SessionFactoryUtils
+ .closeSessionIfNecessary(openSession, sessionFactory);
+ }
+}
+</pre>
+</div></div></div>
+ </div>
+
+
+ </div>
+</div>
+<div class="footer">
+ Generated by CXF SiteExporter
+</div>
+</body>
+</html>
http://git-wip-us.apache.org/repos/asf/struts-site/blob/124e36c4/content/docs/hidden.html
----------------------------------------------------------------------
diff --git a/content/docs/hidden.html b/content/docs/hidden.html
new file mode 100644
index 0000000..0385f86
--- /dev/null
+++ b/content/docs/hidden.html
@@ -0,0 +1,176 @@
+<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
+<!--
+Licensed to the Apache Software Foundation (ASF) under one
+or more contributor license agreements. See the NOTICE file
+distributed with this work for additional information
+regarding copyright ownership. The ASF licenses this file
+to you under the Apache License, Version 2.0 (the
+"License"); you may not use this file except in compliance
+with the License. You may obtain a copy of the License at
+
+ http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing,
+software distributed under the License is distributed on an
+"AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+KIND, either express or implied. See the License for the
+specific language governing permissions and limitations
+under the License.
+-->
+<html>
+<head>
+ <link type="text/css" rel="stylesheet" href="https://struts.apache.org/css/default.css">
+ <style type="text/css">
+ .dp-highlighter {
+ width:95% !important;
+ }
+ </style>
+ <style type="text/css">
+ .footer {
+ background-image: url('https://cwiki.apache.org/confluence/images/border/border_bottom.gif');
+ background-repeat: repeat-x;
+ background-position: left top;
+ padding-top: 4px;
+ color: #666;
+ }
+ </style>
+ <link href='https://struts.apache.org/highlighter/style/shCoreStruts.css' rel='stylesheet' type='text/css' />
+ <link href='https://struts.apache.org/highlighter/style/shThemeStruts.css' rel='stylesheet' type='text/css' />
+ <script src='https://struts.apache.org/highlighter/js/shCore.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushPlain.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushXml.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushJava.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushJScript.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushGroovy.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushBash.js' type='text/javascript'></script>
+ <script src='https://struts.apache.org/highlighter/js/shBrushCss.js' type='text/javascript'></script>
+ <script type="text/javascript">
+ SyntaxHighlighter.defaults['toolbar'] = false;
+ SyntaxHighlighter.all();
+ </script>
+ <script type="text/javascript" language="javascript">
+ var hide = null;
+ var show = null;
+ var children = null;
+
+ function init() {
+ /* Search form initialization */
+ var form = document.forms['search'];
+ if (form != null) {
+ form.elements['domains'].value = location.hostname;
+ form.elements['sitesearch'].value = location.hostname;
+ }
+
+ /* Children initialization */
+ hide = document.getElementById('hide');
+ show = document.getElementById('show');
+ children = document.all != null ?
+ document.all['children'] :
+ document.getElementById('children');
+ if (children != null) {
+ children.style.display = 'none';
+ show.style.display = 'inline';
+ hide.style.display = 'none';
+ }
+ }
+
+ function showChildren() {
+ children.style.display = 'block';
+ show.style.display = 'none';
+ hide.style.display = 'inline';
+ }
+
+ function hideChildren() {
+ children.style.display = 'none';
+ show.style.display = 'inline';
+ hide.style.display = 'none';
+ }
+ </script>
+ <title>hidden</title>
+</head>
+<body onload="init()">
+<table border="0" cellpadding="2" cellspacing="0" width="100%">
+ <tr class="topBar">
+ <td align="left" valign="middle" class="topBarDiv" align="left" nowrap>
+ <a href="home.html">Home</a> > <a href="guides.html">Guides</a> > <a href="tag-developers-guide.html">Tag Developers Guide</a> > <a href="struts-tags.html">Struts Tags</a> > <a href="tag-reference.html">Tag Reference</a> > <a href="ui-tag-reference.html">UI Tag Reference</a> > <a href="hidden.html">hidden</a>
+ </td>
+ <td align="right" valign="middle" nowrap>
+ <form name="search" action="https://www.google.com/search" method="get">
+ <input type="hidden" name="ie" value="UTF-8" />
+ <input type="hidden" name="oe" value="UTF-8" />
+ <input type="hidden" name="domains" value="" />
+ <input type="hidden" name="sitesearch" value="" />
+ <input type="text" name="q" maxlength="255" value="" />
+ <input type="submit" name="btnG" value="Google Search" />
+ </form>
+ </td>
+ </tr>
+</table>
+
+<div id="PageContent">
+ <div class="pageheader" style="padding: 6px 0px 0px 0px;">
+ <!-- We'll enable this once we figure out how to access (and save) the logo resource -->
+ <!--img src="/wiki/images/confluence_logo.gif" style="float: left; margin: 4px 4px 4px 10px;" border="0"-->
+ <div style="margin: 0px 10px 0px 10px" class="smalltext">Apache Struts 2 Documentation</div>
+ <div style="margin: 0px 10px 8px 10px" class="pagetitle">hidden</div>
+
+ <div class="greynavbar" align="right" style="padding: 2px 10px; margin: 0px;">
+ <a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=14313">
+ <img src="https://cwiki.apache.org/confluence/images/icons/notep_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Edit Page"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/editpage.action?pageId=14313">Edit Page</a>
+
+ <a href="https://cwiki.apache.org/confluence/pages/listpages.action?key=WW">
+ <img src="https://cwiki.apache.org/confluence/images/icons/browse_space.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Browse Space"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/listpages.action?key=WW">Browse Space</a>
+
+ <a href="https://cwiki.apache.org/confluence/pages/createpage.action?spaceKey=WW&fromPageId=14313">
+ <img src="https://cwiki.apache.org/confluence/images/icons/add_page_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Add Page"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/createpage.action?spaceKey=WW&fromPageId=14313">Add Page</a>
+
+ <a href="https://cwiki.apache.org/confluence/pages/createblogpost.action?spaceKey=WW&fromPageId=14313">
+ <img src="https://cwiki.apache.org/confluence/images/icons/add_blogentry_16.gif"
+ height="16" width="16" border="0" align="absmiddle" title="Add News"></a>
+ <a href="https://cwiki.apache.org/confluence/pages/createblogpost.action?spaceKey=WW&fromPageId=14313">Add News</a>
+ </div>
+ </div>
+
+ <div class="pagecontent">
+ <div class="wiki-content">
+ <div id="ConfluenceContent"><div class="confluence-information-macro confluence-information-macro-note"><span class="aui-icon aui-icon-small aui-iconfont-warning confluence-information-macro-icon"></span><div class="confluence-information-macro-body"><p>Please make sure you have read the <a shape="rect" href="tag-syntax.html">Tag Syntax</a> document and understand how tag attribute syntax works.</p></div></div>
+
+<h2 id="hidden-Description">Description</h2>
+
+<p>Renders an HTML input element of type hidden, populated by the specified property from the ValueStack.</p>
+
+<h2 id="hidden-Parameters">Parameters</h2>
+
+<p><table width="100%"><tr><td colspan="6" rowspan="1"><h4>Dynamic Attributes Allowed:</h4> true</td></tr><tr><td colspan="6" rowspan="1"> </td></tr><tr><th align="left" colspan="1" rowspan="1" valign="top"><h4>Name</h4></th><th align="left" colspan="1" rowspan="1" valign="top"><h4>Required</h4></th><th align="left" colspan="1" rowspan="1" valign="top"><h4>Default</h4></th><th align="left" colspan="1" rowspan="1" valign="top"><h4>Evaluated</h4></th><th align="left" colspan="1" rowspan="1" valign="top"><h4>Type</h4></th><th align="left" colspan="1" rowspan="1" valign="top"><h4>Description</h4></th></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">accesskey</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set t
he html accesskey attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">class</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The css class to use for element - it's an alias of cssClass attribute.</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">cssClass</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The css class to use for element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">css
ErrorClass</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The css error class to use for element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">cssErrorStyle</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The css error style definitions for element to use</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">cssStyle</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="to
p"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The css style definitions for element to use</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">disabled</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html disabled attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">errorPosition</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valig
n="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Define error position of form element (top|bottom)</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">id</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">HTML id attribute</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">javascriptTooltip</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">Boolean</td><td align="left" colspan="1" rowspan="1" valign="top">Use JavaScript to generate tooltips</td></tr><tr><td align="left" colspan=
"1" rowspan="1" valign="top">key</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the key (name, value, label) for this particular component</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">label</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Label expression used for rendering an element specific label</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">labelSeparator</td><td align="left" colspan="1" rowspan="1" valign="top">false<
/td><td align="left" colspan="1" rowspan="1" valign="top">:</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">String that will be appended to the label</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">labelposition</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Define label position of form element (top/left)</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">name</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td a
lign="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The name to set for element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onblur</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top"> Set the html onblur attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onchange</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onchange attribu
te on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onclick</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onclick attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">ondblclick</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html ondblclick attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onfocus</td><t
d align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onfocus attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onkeydown</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onkeydown attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onkeypress</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valig
n="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onkeypress attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onkeyup</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onkeyup attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onmousedown</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" ro
wspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onmousedown attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onmousemove</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onmousemove attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onmouseout</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html
onmouseout attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onmouseover</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onmouseover attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">onmouseup</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onmouseup attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" va
lign="top">onselect</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html onselect attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">requiredLabel</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">Boolean</td><td align="left" colspan="1" rowspan="1" valign="top">If set to true, the rendered element will indicate that input is required</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">requiredPosition</td><td align="left" colspan="1" rowspan="1" valign="to
p">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Define required position of required form element (left|right)</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">style</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The css style definitions for element to use - it's an alias of cssStyle attribute.</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">tabindex</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align
="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html tabindex attribute on rendered html element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">template</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The template (other than default) to use for rendering the element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">templateDir</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" va
lign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The template directory.</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">theme</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">The theme (other than default) to use for rendering the element</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">title</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the html title attribute on rendered html element</td></tr><tr>
<td align="left" colspan="1" rowspan="1" valign="top">tooltip</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Set the tooltip of this particular component</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">tooltipConfig</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Deprecated. Use individual tooltip configuration attributes instead.</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">tooltipCssClass</td><td align="left" colspan="1" rows
pan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">StrutsTTClassic</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">CSS class applied to JavaScrip tooltips</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">tooltipDelay</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">Classic</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Delay in milliseconds, before showing JavaScript tooltips </td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">tooltipIconPath</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td
align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Icon path used for image that will have the tooltip</td></tr><tr><td align="left" colspan="1" rowspan="1" valign="top">value</td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top"></td><td align="left" colspan="1" rowspan="1" valign="top">false</td><td align="left" colspan="1" rowspan="1" valign="top">String</td><td align="left" colspan="1" rowspan="1" valign="top">Preset the value of input element.</td></tr></table></p>
+
+<h2 id="hidden-Examples">Examples</h2>
+
+<div class="code panel pdl" style="border-width: 1px;"><div class="codeContent panelContent pdl">
+<script class="brush: xml; gutter: false; theme: Default" type="syntaxhighlighter"><![CDATA[
+<-- example one -->
+<s:hidden name="foo" />
+<-- example two -->
+<s:hidden name="foo" value="%{bar}" />
+
+Example One Resulting HTML (if foo evaluates to bar):
+<input type="hidden" name="foo" value="bar" />
+Example Two Resulting HTML (if getBar method of the action returns 'bar')
+<input type="hidden" name="foo" value="bar" />
+]]></script>
+</div></div></div>
+ </div>
+
+
+ </div>
+</div>
+<div class="footer">
+ Generated by CXF SiteExporter
+</div>
+</body>
+</html>