page redirection with out losing values

[shyamkumar bopannachengalaiah]

i had designed a page called s.jsp where i am entering the values in the text fields and as i enter the submit button the values are validated in check.java servletpage ,if the validation returns false the response has to be redirected to the s.jsp with out losing the values that i had entered first. but my values are lost . How can i retrieve this problem ? i should not lose my values.

[Sagar Rohankar]

Create a bean for input values on s.jsp.
In Servlet code, validate the properties, if they fails to validate , set the baen values to the previous value s coming from form.
Forward to s.jsp pages.

And use the EL for accessing request attribute values in JSP page, like

<form>
          <input type="text" id="username" name="username" value="${user.username}"
          size="15" maxlength="15" /> 
          <span class="error">${form.messages.username}</span>// Display validation error.
</form>      

[Bauke Scholtz]

You should do a forward, not a redirect. A redirect creates a new request, hereby dropping the originating request where the parameters/attributes are in.

You may find this article useful as well, it also handles validation in plain JSP/Servlet: http://balusc.blogspot.com/2008/07/dao-tutorial-use-in-jspservlet.html

[Sagar Rohankar]

Bauke Scholtz wrote:

You may find this article useful as well, it also handles validation in plain JSP/Servlet: http://balusc.blogspot.com/2008/07/dao-tutorial-use-in-jspservlet.html

And the above code I pasted is taken from the same article. Good Blog BalusC