具体错误是：web.xml is missing and <failOnMissingWebXml> is set to true
在pom.xml文件中加入
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.3</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
然后右键项目名》maven》update project
