報錯信息:
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
解決:
用Eclipse創建Maven結構的web項目的時候選擇了Artifact Id爲maven-artchetype-webapp,由於這個catalog比較老,用的servlet還是2.3的,而一般現在至少都是2.5,在Project Facets裏面修改Dynamic web module爲2.5的時候就會出現Cannot change version of project facet Dynamic web module to 2.5,按照網上教程搭建好項目後,要修改成3.0,修改後不兼容,Tomcat報錯,就又改成2.5,修改過程如圖:
其實在右邊可以看到改到2.5需要的條件以及有衝突的facets,解決這個問題的步驟如下:
1.把Servlet改成2.5,打開項目的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>
改後:
- <?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
打開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>
打開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>
都改好之後在打開看看,已經把Dynamic web module改成了2.5
好了,大功搞成,這是一種解決辦法,但是治標不治本,更高級的就是自定義catalog,然後安裝到本地,再創建的時候啥都有了,比如把現在流行的s(struts2)sh,ssi,s(springmvc)sh 創建catalog,包括包結構,部分代碼啥的都有,下次寫吧。