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Posted to dev@tomcat.apache.org by Alex Chaffee <gu...@stinky.com> on 2002/02/02 04:08:59 UTC
[FAQ] jGuru FAQ Update
jGuru maintains FAQs and Forums on Servlets, JSP, and Tomcat (as well as
many other Java topics). Here is an automated update on recent postings to
Tomcat-related FAQs. Please direct flames and feedback to alex@jguru.com .
- Alex
++ JavaServer Pages (JSP) FAQ: http://www.jguru.com/faq/JSP
I have several jsp pages that are referenced in an SSL server, and non-SSL server. To avoid the "this document contains some unencrypted data" error, I want to have it look at the HTTPS variable apache sets and see if its in secure mode.
<p> So, if $HTTPS == on, I want to write:<br>
img src="https://content.domain/images/foo.jpg" <br> else I want to write:<br> img src="http://content.domain/images/foo.jpg
How do I do this?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=741813
How can I make a JSP page implement the SingleThreadedModel interface?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=741113
Using JSP I can use implicit object <tt>exception</tt> when my JSP page is declared with <%@ page isErrorPage="true" %> directive. But how to get this reference programmatically, for example with a servlet ?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=740991
<p>I have a framed JSP application and would like to make it so pages meant to be viewed as a frame can only be viewed as a frame.
<p>So, if they type the direct URL to that frame, I would like that page to check to see what frame it is in, and if it is in, say, _top, then redirect to the main (framed) page.
<p>Is this possible?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=740988
I want to ship my JSP-based application to my customers by bundling it with Tomcat.
Is Jakarta Tomcat 4.0 freeware?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=740986
If we declare a variable, say int i=3 in jsp file, then in what method does this variable reside? Is it within service() or the init() method? If this resides in service(), how can I make to be in init() and vice versa?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=739377
I want to create a Error Page and save the StackTrace within a String type variable.<br>
<p>
My code is:<p>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"><br>
<%@ page import="java.lang.Exception,java.io.*"%><br>
<%@ page isErrorPage="true" %><br>
<html><br>
<head><br>
<title>Untitled</title><br>
</head><br>
<body><br>
Fehler!!!!<p>
<p>Fehler: <%=exception.getMessage()%>
<p><% PrintWriter writer = new PrintWriter(out);%>
Stack: <% exception.printStackTrace(writer);%>
<p>getLocalizedMessage = <%=exception.getLocalizedMessage()%>
<p>toString = <%=exception.toString()%><br>
</body><br>
</html><p>
But here, the StackTrace is printed directly within the Page. How do I save it in a String variable? I want to send myself an automatic report if there is any error.<p>
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=739375
<p>Hello! I am trying to include a JSP page that contains commonly used html/java code, into another JSP page multiple times using the jsp include directive.</p>
<p>This causes the parser in Websphere Appl. Server 3.5.3 to display an error page that says<br> <tt>org.apache.jasper.compiler.ParseException: Seen file include.jsp already, maybe this is a recursive include?!</tt></p>
<p>However, when developing and testing the JSP page in Visual Age's 4.0 Websphere Test Environment, everything works fine....Why?</p>
<p>If Websphere Application Server is right about not allowing me to include the same JSP page several times, is there some other way perform this task?</p>
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=739372
I need to allow users to upload files and pictures.
<br>
When they upload pictures, I need to create thumbnail for them on the fly.
<br>
Is there any taglibs or java source to do this from JSP or servlets?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=735673
I need to allow users to upload files and pictures.
<br>
When they upload pictures, I need to create thumbnail for them on the fly.
<br>
Is there any taglibs or java source to do this from JSP or servlets?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=735672
My Jsp file need to forward a request to another servlet which is located in another Web Application on another machine. How can I do that? If I also want to add more parameters to the original request from the jsp file, what should I do?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=735653
++ Servlets FAQ: http://www.jguru.com/faq/Servlets
Using JSP I can use implicit object <tt>exception</tt> when my JSP page is declared with <%@ page isErrorPage="true" %> directive. But how to get this reference programmatically, for example with a servlet ?
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=740991
Why do I get the error
<b>org.xml.sax.SAXParseException : Element type "web-app" must be declared</b>
when starting my web application? It has a <tt>web-app</tt> element already!
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=740497
How can I prevent the expiration of a Session?<br>
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=738277
++ Tomcat FAQ: http://www.jguru.com/faq/Tomcat
Why do I get the error
<b>org.xml.sax.SAXParseException : Element type "web-app" must be declared</b>
when starting my web application? It has a <tt>web-app</tt> element already!
http://www.jguru.com/misc/faqtrampoline.jsp?src=notify&EID=740497
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