报错信息:
Resource Path Location Type Cannot change version of project facet Dynamic Web Module to
JavaServer Faces 2.0 requires Dynamic Web Module 2.5 or newer..Maven Java EE Configuration Problem
JavaServer Faces 2.0 can not be installed : One or more constraints have not been satisfied..line 1 Maven Java EE Configuration Problem
解决:
用Eclipse创建Maven结构的web项目的时候选择了Artifact Id为maven-artchetype-webapp,由于这个catalog比较老,用的servlet还是2.3的,而一般现在至少都是2.5,在Project Facets里面修改Dynamic web module为2.5的时候就会出现Cannot change version of project facet Dynamic web module to 2.5,按照网上教程搭建好项目后,要修改成3.0,修改后不兼容,Tomcat报错,就又改成2.5,修改过程如图:
其实在右边可以看到改到2.5需要的条件以及有冲突的facets,解决这个问题的步骤如下:
1.把Servlet改成2.5,打开项目的web.xml,改之前:
- <!DOCTYPE web-app PUBLIC
- "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
- "http://java.sun.com/dtd/web-app_2_3.dtd" >
- <web-app>
- <display-name>Archetype Created Web Application</display-name>
- </web-app>
改后:
- <?xml version="1.0" encoding="UTF-8"?>
- <web-app version="2.5"
- 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">
- <display-name>Archetype Created Web Application</display-name>
- </web-app>
- eclipse.preferences.version=1
- org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
- org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.5
- org.eclipse.jdt.core.compiler.compliance=1.5
- org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
- org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
- org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
- org.eclipse.jdt.core.compiler.source=1.5
把1.5改成1.6
- eclipse.preferences.version=1
- org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
- org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.6
- org.eclipse.jdt.core.compiler.compliance=1.6
- org.eclipse.jdt.core.compiler.problem.assertIdentifier=error
- org.eclipse.jdt.core.compiler.problem.enumIdentifier=error
- org.eclipse.jdt.core.compiler.problem.forbiddenReference=warning
- org.eclipse.jdt.core.compiler.source=1.6
打开org.eclipse.wst.common.component
- <?xml version="1.0" encoding="UTF-8"?>
- <project-modules id="moduleCoreId" project-version="1.5.0">
- <wb-module deploy-name="test">
- <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>
- <wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/>
- <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
- <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
- <property name="context-root" value="test"/>
- <property name="java-output-path" value="/test/target/classes"/>
- </wb-module>
- </project-modules>
把 project-version="1.5.0"改成 project-version="1.6.0"
- <?xml version="1.0" encoding="UTF-8"?>
- <project-modules id="moduleCoreId" project-version="1.6.0">
- <wb-module deploy-name="test">
- <wb-resource deploy-path="/" source-path="/target/m2e-wtp/web-resources"/>
- <wb-resource deploy-path="/" source-path="/src/main/webapp" tag="defaultRootSource"/>
- <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/java"/>
- <wb-resource deploy-path="/WEB-INF/classes" source-path="/src/main/resources"/>
- <property name="context-root" value="test"/>
- <property name="java-output-path" value="/test/target/classes"/>
- </wb-module>
- </project-modules>
打开org.eclipse.wst.common.project.facet.core.xml
- <?xml version="1.0" encoding="UTF-8"?>
- <faceted-project>
- <fixed facet="wst.jsdt.web"/>
- <installed facet="java" version="1.5"/>
- <installed facet="jst.web" version="2.3"/>
- <installed facet="wst.jsdt.web" version="1.0"/>
- </faceted-project>
把<installed facet="java" version="1.5"/>改成<installed facet="java" version="1.6"/>,把 <installed facet="jst.web" version="2.3"/>改成 <installed facet="jst.web" version="2.5"/>
- <?xml version="1.0" encoding="UTF-8"?>
- <faceted-project>
- <fixed facet="wst.jsdt.web"/>
- <installed facet="java" version="1.6"/>
- <installed facet="jst.web" version="2.5"/>
- <installed facet="wst.jsdt.web" version="1.0"/>
- </faceted-project>
都改好之后在打开看看,已经把Dynamic web module改成了2.5
好了,大功搞成,这是一种解决办法,但是治标不治本,更高级的就是自定义catalog,然后安装到本地,再创建的时候啥都有了,比如把现在流行的s(struts2)sh,ssi,s(springmvc)sh 创建catalog,包括包结构,部分代码啥的都有,下次写吧。