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JSP form validation qestion

Posted on 2002-03-09
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Last Modified: 2010-03-31
Hi all,

I want to do some form validation using JSP.
So I have a html page that posts to validate.jsp. Validate.jsp uses a bean for validation and has a scope of session. if it is valid then it sendRedirect to sucess or if it fails then it sendRedirect to signup2.jsp. i want signup2.jsp to display the error and take the fields that are valid and populate it on signup2.jsp so that the user does not have to retype the stuff. I have this partitally working. The part that does not work is when in the html file, if there is an error it goes to signup2.jsp like it is suppose to but when the user enter the correct information and repost back to validate.jsp it seems like the new information does not get picked up. help. i tried using request as the scope and that did not work. code sniplet below.

thanks

validate.jsp

<%@ page import="java.util.*" %>

     <jsp:useBean id="vf" class="com.tdw.webmodule.beans.SignUpBean" scope="session" />
    <jsp:setProperty name="vf" property="*"/>

<%
     if(vf.isValid()) {
     
          //successful
          response.sendRedirect("/servlet/members/signup2.jsp");
     } else {
          //failed
          response.sendRedirect("/servlet/members/signUpRetry.jsp");
     }
%>

signup2.jsp

<jsp:useBean id="vf" class="com.tdw.webmodule.beans.SignUpBean" scope="session" />
<%! String referral_id; %>
<%  
     if (request.getParameter("referral")!=null) {
          referral_id=request.getParameter("referral");
     }
     
%>

...html stuff....
<form name="signup" method="post" action="/servlet/validate.jsp">
...html stuff...

<table>
<tr>
<td width="34%" align="left" valign="top"><font face="Verdana, Arial, Helvetica, sans-serif" size="2">First
                          Name </font></td>
                        <td width="64%" align="left" valign="top"> <font size="2" face="Verdana, Arial, Helvetica, sans-serif" color="#FF0000">
                          <input type="text" name="fname" value="<%=vf.getFname()%>">
                          <br>
                          <%=vf.getErrorMessage("fname")%> </font></td>

</tr>
...more table stuff...
</table>
<.form>
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Question by:ahuen
  • 2
3 Comments
 
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Accepted Solution

by:
saxaboo earned 100 total points
ID: 6853538
Hi,

first a comment about using the "request" scope : in your case it cannot work since you're using sendRedirect rather than forward (when you sendredirect to signup2, you in fact send a HTTP response to the browser that will consequently issue a 2nd HTTP request to signup2.jsp. When you use forward(), you send signup2 as the response to the browser)

Then you say that signup2 is supposed to show when an error occurs, but your code redirects to signup2 when vf.isValid() returns true. Am I missing sth here ?

Ultimately, could you post :
- the source code for you initial sign up form ?
- the properties exposed by your bean ?

-S
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by:Moondancer
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