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Posted to users@tomcat.apache.org by Odyssée TREMOULIS <od...@hotmail.com> on 2010/03/24 15:12:48 UTC
JSP with a form and importing another form

Hi all !

If I post a form in the jsp then it execute the doPost of the right servlet.

If the servlet detects an error in the form, I send back to the jsp.

All is OK.
But...

If the jsp has an <c:import url="/form2"/> ( /form2 is a servlet redirecting to another jsp, and c:import is the 'core' taglib),
Tomcat do the import with the POST method request and it's the doPOST method of my form2 servlet who is executed

Is it a normal way ?

Here's all the code:

WEB.XML


	Code:
		<welcome-file-list>
		<welcome-file>form1.jsp</welcome-file>
	</welcome-file-list>

	<servlet>
		<servlet-name>form1</servlet-name>
		<servlet-class>org.Form1</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>form1</servlet-name>
		<url-pattern>/form1</url-pattern>
	</servlet-mapping>
	<servlet>
		<servlet-name>form2</servlet-name>
		<servlet-class>org.Form2</servlet-class>
	</servlet>
	<servlet-mapping>
		<servlet-name>form2</servlet-name>
		<url-pattern>/form2</url-pattern>
	</servlet-mapping>
FORM1.JSP


	Code:
	<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<body>
<form action="/form1" method="post">
	<input type="text" name="mytext"/>
	<input type="submit" name="mysubmit"/>
</form>
<c:import url="/form2" />
</body>
FORM2.JSP


	Code:
	<body>
<form action="/form2" method="post">
	<input type="text" name="mytext2"/>
	<input type="submit" name="mysubmit2"/>
</form>
</body>
org.Form1.class


	Code:
	public class Form1 extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		System.out.println("DOGET INITIALIZING FORM1");
	}
	
	
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		System.out.println("DOPOST FORM1");
		// I detect errors in my form: go back
		req.getRequestDispatcher("/form1.jsp").forward(req, resp);
	}
}


org.Form2.class


	Code:
	public class Form2 extends HttpServlet {

	@Override
	protected void doGet(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		System.out.println("DOGET INITIALIZING FORM2");
		req.getRequestDispatcher("/form2.jsp").forward(req, resp);
	}
	
	
	@Override
	protected void doPost(HttpServletRequest req, HttpServletResponse resp)
			throws ServletException, IOException {
		System.out.println("DOPOST FORM2");
	}
}
So, when I submit something with the form 1 it shows:

DOPOST FORM1

DOPOST FORM2



Thanks

		 		 	   		  
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