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Bug 333259

Summary:	Initial attribute "xmlns:web" in Java EE 6 web.xml is invalid
Product:	[WebTools] WTP Java EE Tools	Reporter:	Wolfgang Knauf <wolfgang.knauf>
Component:	jst.j2ee	Assignee:	Carl Anderson <ccc>
Status:	CLOSED FIXED	QA Contact:	Chuck Bridgham <cbridgha>
Severity:	normal
Priority:	P2	CC:	alkazako, ccc, ian.trimble, rsitze, shr31223, thatnitind
Version:	3.2
Target Milestone:	Future
Hardware:	PC
OS:	Windows 7
Whiteboard:

Description Wolfgang Knauf

2010-12-28 04:02:56 EST

Build Identifier: Eclipse M20100909-0800, wtp-R-3.2.2-20100915173744

I think there is a bug in the way Eclipse creates a web.xml.
I am not sure about this and asked this in the forums before, but did not receive a reply (no direct link available, because the forums web page does not show anything today):

A default "web.xml" (here for a JavaEE6 web project) contains an attribute "xmlns:web=...":

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    id="WebApp_ID" version="3.0">
    ...
</web-app>

The sense of the "xmlns:web" attribut should be that you can build this kind of web.xml:
<?xml version="1.0" encoding="ASCII"?>
<web:web-app xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" ...>
    <web:display-name>TestWeb</web:display-name>
    ....
</web:web-app>

But this will result in validation errors if the autogenerated web.xml is used.

I think the "xmlns:web" attribute should be:
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">

Is this right? Or do I misunderstand something ;-)?

By the way: this must be quite an old one... 

Reproducible: Always

Comment 1 Wolfgang Knauf

2011-01-27 06:16:52 EST

The problem is also valid for a 2.5 webapp. This is the web.xml snippet:

<?xml version="1.0" encoding="UTF-8"?>
<web-app 
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
   xmlns="http://java.sun.com/xml/ns/javaee" 
   xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
   xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" 
   id="WebApp_ID" 
   version="2.5">

As you can see, the "xmlns:web" attribute here is also wrong, it should be "http://java.sun.com/xml/ns/javaee"  in my opinion.

For 2.4 web.xml, this is OK because no "xmlns:web" is generated.

Comment 2 Carl Anderson

2011-04-20 11:38:29 EDT

*** Bug 343324 has been marked as a duplicate of this bug. ***

Comment 3 Richard A. Sitze

2011-07-16 19:12:15 EDT

It's 1.5 years since this was reported, and it's now in Indigo.
I'll add that the same problem occurs with a generated EAR files application.xml:

<?xml version="1.0" encoding="UTF-8"?>
<application
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xmlns="http://java.sun.com/xml/ns/javaee"
  xmlns:application="http://java.sun.com/xml/ns/javaee/application_5.xsd"
  xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/application_6.xsd"
  id="Application_ID" version="6">
...
</application>


xmlns:application and the schemaLocation don't match.

Comment 4 Roberto Sanchez Herrera

2014-01-21 13:15:03 EST

This problem is fixed indirectly in WTP 3.5.2 and 3.6, because in those versions of WTP, the web prefix is not added to the deployment descriptor. And the same for the EAR deployment descriptor.

Resolving as fixed, base on the explanation above.

Comment 5 Wolfgang Knauf

2014-01-26 13:37:39 EST

Closing...