我們用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3.0的時候就會出現Cannot change version of project facet Dynamic web module to 3.0,如圖:
其實在右邊可以看到改到3.0需要的條件以及有衝突的facets,解決這個問題的步驟如下:
1.修改 src\main\webapp\WEB-INF\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 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"
id="WebApp_ID" version="3.0">
<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1.7
- eclipse.preferences.version=1
- org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled
- org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.7
- org.eclipse.jdt.core.compiler.compliance=1.7
- 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=1.7
3.修改項目的設置,修改項目.settings目錄下的 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="rsd">
<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="rsd"/>
<property name="java-output-path" value="/rsd/target/classes"/>
</wb-module>
</project-modules>
把project-version="1.5.0"改成project-version="1.7.0"
-
<?xml version="1.0" encoding="UTF-8"?>
<project-modules id="moduleCoreId" project-version="1.7.0">
<wb-module deploy-name="rsd">
<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="rsd"/>
<property name="java-output-path" value="/rsd/target/classes"/>
</wb-module>
</project-modules>
4.修改項目的設置,修改項目.settings目錄下的 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="1.7"/>,把 <installed facet="jst.web" version="2.3"/>改成 <installed facet="jst.web" version="3.0"/>
-
<?xml version="1.0" encoding="UTF-8"?>
<faceted-project>
<fixed facet="wst.jsdt.web"/>
<installed facet="java" version="1.7"/>
<installed facet="jst.web" version="3.0"/>
<installed facet="wst.jsdt.web" version="1.0"/>
</faceted-project>
都改好之後重啓Eclipse ,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。