Maven2.5改 3.0版本web.xml、pom.xml

pom.xml添加配置的jdk

    <build> 
  <plugins> 
  <plugin> 
  <groupId>org.apache.maven.plugins</groupId> 
  <artifactId>maven-compiler-plugin</artifactId> 
  <version>3.0</version> 
  <configuration> 
  <source>1.8</source> 
  <target>1.8</target> 
  </configuration> 
  </plugin> 
  </plugins> 

  </build>

web.xml替换<web-app>

<web-app version="3.0" 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_3_0.xsd">

修改项目目录下.settings的文件org.eclipse.wst.common.project.facet.core.xml

原：<installed facet="wst.jsdt.web" version="1.0"/>
      <installed facet="java" version="1.5"/>   

      <installed facet="jst.web" version="2.5"/>

 改：<installed facet="wst.jsdt.web" version="1.0"/>
      <installed facet="java" version="1.8"/>   

      <installed facet="jst.web" version="3.0"/>