Cannot change version of project facet Dynamic web module to 3.1报错解决
2017-08-28 17:36
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解决办法:
在Project Facets里面修改Dynamic web module为3.1的时候就会出现Cannot change version of project facet Dynamic web module to 3.1,如图:其实在右边可以看到改到3.1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3.1,打开项目的web.xml,改之前:
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1" metadata-complete="false">
2.修改项目的设置,在Navigator下打开项目.settings目录下的org.eclipse.jdt.core.prefs
eclipse.preferences.version=1 org.eclipse.jdt.core.compiler.codegen.inlineJsrBytecode=enabled org.eclipse.jdt.core.compiler.codegen.targetPlatform=1.8 org.eclipse.jdt.core.compiler.compliance=1.8 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=1.8
打开org.eclipse.wst.common.component
<?xml version="1.0" encoding="UTF-8"?><project-modules id="moduleCoreId" project-version="1.8.0">
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="1.8"/> <installed facet="jst.web" version="3.1"/> <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3.1,
3.最后一步,maven update project解决错误。
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