Eclipse editor gives error for web.xml for jsp-config

Question

Hi All,
I am using following web.xml . Eclipse europa editor gives warning if <jsp-config> is added. Is anyone have idea about it.
<?xml version="1.0" encoding="ISO-8859-1"?>
<!DOCTYPE web-app
PUBLIC "-//Sun Microsystems, Inc.//DTD Web Application 2.2//EN"
"http://java.sun.com/j2ee/dtds/web-app_2_2.dtd">
<web-app>     
     <display-name>Cart</display-name>               
     <servlet>
<servlet-name>RequestHandler</servlet-name>
<servlet-class>com.amazon.helper.LoginListener</servlet-class>
</servlet>      
     <servlet-mapping>
<servlet-name>RequestHandler</servlet-name>
<url-pattern>cart.loginUser</url-pattern>
</servlet-mapping>
<jsp-config>
     <jsp-property-group>
     <url-pattern>*.jsp</url-pattern>
               <scripting-invalid>true</scripting-invalid>
     </jsp-property-group>
</jsp-config>
</web-app>

Answer 1

Your web.xml file is out of date.
You have a DTD there for the Servlet 2.2 spec.
The jsp-config tag was introduced to web.xml as of the Servlet 2.4 specification - which is why it is complaining in your editor.
Seeing as you have Tomcat 6, I would recommend you change your web.xml to look like this
- removed the DTD
- change the web-app tag to include schema information
<?xml version="1.0" encoding="ISO-8859-1"?>
<web-app xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" version="2.5">
<display-name>Cart</display-name>
<servlet>
<servlet-name>RequestHandler</servlet-name>
<servlet-class>com.amazon.helper.LoginListener</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>RequestHandler</servlet-name>
<url-pattern>cart.loginUser</url-pattern>
</servlet-mapping>
<jsp-config>
<jsp-property-group>
<url-pattern>*.jsp</url-pattern>
<scripting-invalid>true</scripting-invalid>
</jsp-property-group>
</jsp-config>
</web-app>Cheers,
evnafets