Cannot change version of the project facet Dynamic Web Module to 2.5 solution to the problem

Description	                                                        Resource	Path	location	Type
cannot change version of project facet Dynamic Web Module to 2.5.	Cms-web line		1	Maven Java EE Configuration problem

This error occurs when you finish downloading a project ...

Workaround:

1. First let's look at what web Module version means.
Each time you create a Web project, you are also asked to select the Web module version, which represents the version of the Web project that was built, and the different versions of the Web project have different application environments. For example, 3.0 of Web projects cannot be deployed on JBOSS5 and early risers.
2. View the Web module version, which can be viewed in the project--properties--project facets.

3. In general, we are building projects, writing code, and then deploying the run. What to do if the version issue cannot be deployed in the end. Re-create the project, and then guide the code, which is too much trouble.

General handling: In the project's hard disk directory, locate the Org.eclipse.wst.common.project.facet.core.xml file under the. Setting folder, modify the <installed facet= "Jst.web "version=" version available "/>.

Reference: http://blog.csdn.net/liusong0605/article/details/8846889

http://blog.csdn.net/lushuaiyin/article/details/7485440

Http://www.cnblogs.com/yezhenhan/archive/2011/10/17/2215279.html

http://stackoverflow.com/questions/18122336/cannot-change-version-of-project-facet-dynamic-web-module-to-3-0