Dynamic Web Module 2.3 change to 3.0 maven工程解决办法

pom.xml

 <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
                 <version>3.0</version>
                 <configuration>
                     <source>1.7</source>
                     <target>1.7</target>
                 </configuration>
             </plugin>
         </plugins>

web.xml

 <?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"
     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">

org.eclipse.wst.common.project.facet.core.xml

 <?xml version="1.0" encoding="UTF-8"?>
 <faceted-project>
   <fixed facet="wst.jsdt.web"/>
   <installed facet="wst.jsdt.web" version="1.0"/>
   <installed facet="java" version="1.7"/>
   <installed facet="jst.web" version="3.0"/>
 </faceted-project>

切换为3.0版本之后,项目路径一直访问不了,~~清空tomcat部署项目~~,问题终于解决