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1. JRun Servlet Error "The system cannot find the path specified" when attempting to upload multipart form    stackoverflow.com

Some code a production server which uploaded files has seemingly stopped working with the following error: JRun Servlet Error as the title of the page and the following in the page body: 

500

The ...

2. Should session be used to handle error message for form validation?    stackoverflow.com

I'm creating registration page and I've done basic client side (JS) form validation.
Now I am to write server side validation.
What I have done is call request.getParameter(): 

String username = ...

3. getting an error page, uploading a file worked last week and I have made no changes    stackoverflow.com

here is my JSF/HTML page 

<?xml version='1.0' encoding='UTF-8' ?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml"
  xmlns:ui="http://java.sun.com/jsf/facelets"
  xmlns:f="http://java.sun.com/jsf/core"
  xmlns:h="http://java.sun.com/jsf/html"
  xmlns:c="http://java.sun.com/jsp/jstl/core">


<body>


        ...

4. How to display error message in JSP    stackoverflow.com

Is it possible to display an error message in JSP when a user selects a wrong option? It's not an exception...

5. error in beans/form processing using jsp files in java web application    stackoverflow.com

I used beans/form processing to take input parameters on login screen and then with those parameters try and log the user into the application. However I am getting an error-

...

6. JSP Hello Page Error    stackoverflow.com

I am beginner in JSP and trying to do simple jsp page. ? want to set my class fields name and surname and print on the page. My class : 

package org.mypackage.person;

/**
 ...

7. Server Error--multipart/form-data    coderanch.com

By using 'multipart/form-data' I am uploading a csv file & doing some stuff in the database. Once it is completed, I am returning a list to my action. I need to display this list and a button. Once the button is clicked, I need to export this list as a csv file. This 'Export' functionality works if I don't display the ...

8. Form POST Error    coderanch.com

9. Redisplay form data and error messages in JSP after validation    coderanch.com

Hi, i'd like to know how do you handle data validation/correction in JSP! My plan is to get user data from a HTML form in a Java bean and after some validation within the bean i set up a corresponding bean with error messages appropriate for the particular HTML form. If there are errors i could redisplay the same JSP and ...





10. SprngFramework Form Binding Error    coderanch.com

11. Error: Using macros in jsp forms!! I Have got NullPointerException????plz Help me    zkoss.org

I got the NullPointer Exception when try to use Macro in JSPs I have not any problem in zul and macros work perfectly. has anyone any idea to solve this problem? my environment is: Zkoss : 3.0.6 Application Server: Weblogic 10.3 Jdk: 1.6.0_05-b13 The Exception StackTrace is: ul 28, 2008 12:33:42 PM org.zkoss.jsp.zul.impl.RootTag$MyRichlet service:235 SEVERE: >>javax.servlet.jsp.JspException: javax.servlet.jsp.JspException: java.lang.NullPointerException >>javax.servlet.jsp.JspException: java.lang.NullPointerException >>java.lang.NullPointerException ...