Adding ActionForward

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The "forward" element in struts-config.xml describes an ActionForward that is to be made available to an Action as a return value. An ActionForward is referenced by a logical name and encapsulates a URI. A "forward" element may be used to describe both global and local ActionForwards. Global forwards are available to all the Action objects in the module. Local forwards can be nested within an <action> element and only available to an Action object when it is invoked through that ActionMapping. Let us add two forwards for LoginAction “success” and “fail”. After adding the two forwards,the <action> tag looks like this:

Note the two forwards success and the failure. The path attribute in each forward tag is the resource to which the request will be redirected when forwarded to a particular forward. Let us now program our action to return to “success” if the entered user id and password is admin/admin. Right now we don’t have any action form associated with this action,let’s get the parameters from request as we do in servlets.

String user = request.getParameter("userId");
String password = request.getParameter("password");
if(user!=null && password!=null && user.equals("admin") && password.equals("admin"))
return mapping.findForward("success");
return mapping.findForward("failure");

Now create index.jsp so that we have a form to submit values to this form. Add the following form in the body section of the jsp.

<form action="/login.do" method="post">
         <table border="0">
            <tr>
                <td>Login:</td>
                <td><input type="text" name="userId" /></td>
          </tr>
          <tr>
             <td>Password:</td>
             <td><input type="text" name="password" /></td>
          </tr>
          <tr>
          <td colspan="2" align="center"><input type="submit" value="Login"/></td>
        </tr>
       </table>
</form>

We are almost ready to run the project. But let’s create a file manageusers.jsp so that if we enter a valid user id / password,we can see the success page. Add a simple success message “You are logged into this page”.