The server does not support edition 3.0 of the J2EE Web module specification

1. Error:

When running-> run on server is used in eclipse, selecting Tomcat 6 will report an error: the server does not support version 3.0 of the J2EE Web module specification

2. cause:

Tomcat 6.0 supports up to servlet 2.5, but now the project to be imported is version 3.0.

3. solution:

There is a. settings folder under the root directory of the Project, which contains an org. Eclipse. WST. Common. Project. facet. Core. xml file with the following content:

 <?  XML version = "1.0" encoding = "UTF-8"  ?> 
 <  Faceted-Project  > 
 <  Fixed  Facet = "Java"  /> 
 <  Fixed  Facet  = "JST. Web"  /> 
 <  Fixed  Facet  = "WST. jsdt. Web"  /> 
 <  Installed  Facet  = "Java" Version  = "1.6"  /> 
 <  Installed  Facet  = "JST. Web"  Version  = "3.0"  /> 
 <  Installed  Facet  = "WST. jsdt. Web"  Version  = "1.0" /> 
 </  Faceted-Project  > 

Set

 
<InstalledFacet= "JST. Web"Version= "3.0"/>
 

Change

 
<InstalledFacet= "JST. Web"Version= "2.5"/>
 

You can.