WARNING] Warning: selected war files include a WEB-INF/web.xml which will be ignored (webxml attribute is missing from war task, or ignoreWebxml attribute is specified as ‘true‘)   
在使用Maven 编译项目的时候会出现  
[WARNING] Warning: selected war files include a WEB-INF/web.xml which will be ignored  
解决方法：  
<plugin> 
<groupId>org.apache.maven.plugins</groupId>

<artifactId>maven-war-plugin</artifactId>

<version>2.1.1</version>

<configuration> 
<!-- http://maven.apache.org/plugins/maven-war-plugin/ -->

<packagingExcludes>WEB-INF/web.xml</packagingExcludes>

</configuration>

</plugin> 

[WARNING] Warning: selected war files include a WEB-INF/web.xml which will be ignored (webxml attribute is missing from war task, or ignoreWebxml attribute is specified as 'true')