Hi!
Passing parameters to the action is handled automatically for you by
the framework if you have the appropriate setters on the action. I
suggest that you start with the tutorials from the documentation:
http://struts.apache.org/2.1.6/docs/bootstrap.html
Nils-H
On Wed, Apr 8, 2009 at 12:19 PM, NR031 <nataraja...@cognizant.com> wrote:
>
> Hi,
>
> I want to pass input parameter entered in the login page to
> ActionSupport class. How to pass it.
>
> I used httpservletreq object to get value, but getting NullPointerException
> in the req.getParameter("submitvalue") line.
>
> struts.xml :
>
> <struts>
> <package name="ActionServlet" namespace="/JSPPages"
> extends="struts-default">
> <action name="AJAX" class="com.cts.AJAX">
> <result name="success">/JSPPages/AJAXSuccess.jsp</result>
> <result name="failure">/JSPPages/AJAXFailure.jsp</result>
> <result name="error">/JSPPages/AJAXError.jsp</result>
> </action>
> </package>
> </struts>
>
> Login page :
>
> <html>
> <head>
> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
> <title>This is my Struts2 and AJAX JSP</title>
> </head>
> <body>
> <form action="JSPPages/AJAX.action">
> <h2>This JSP page explains how Struts uses AJAX</h2><br>
> Click the button to see the AJAX page...<br>
> <input type="submit" value="Show AJAX Page" name="submitvalue"/>
> <input type="submit" value="Show Failure Page"
> name="submitvalue"/>
> </form>
> </body>
> </html>
>
> AJAX.java :
>
> package com.cts;
>
> import com.opensymphony.xwork2.ActionSupport;
> import javax.servlet.http.HttpServletRequest;
>
> public class AJAX extends ActionSupport {
>
> HttpServletRequest req;
>
> �...@override
> public String execute() throws Exception {
> String submit_value = req.getParameter("submitvalue");
> if (submit_value != null && submit_value.equalsIgnoreCase("Show AJAX
> Page")) {
> return "success";
> } else if (submit_value != null &&
> submit_value.equalsIgnoreCase("Show Failure Page")) {
> return "failure";
> }
> System.out.println("Error occurred :: submit_value = " +
> submit_value);
> return "error";
> }
> }
>
> Is it possible to use HttpServletRequest inside execute() method? What is
> the problem in the above code? and what is the solution?
>
>
> Thanks in advance,
> --
> View this message in context:
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> Sent from the Struts - User mailing list archive at Nabble.com.
>
>
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