[Java][Maven]Maven部署Web项目报错webxml attribute is required

mvn install一个web项目时，报错如下：Error assembling WAR:webxml attribute is required

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-war-plugin:2.1.1:war
(default-war) on project com.alpha.webapp: Error assembling WAR:
webxml attribute is required (or pre-existing WEB-INF/web.xml if executing in update mode) -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException

原因：

maven的web项目默认的webroot是在src\main\webapp。如果在此目录下找不到web.xml就抛出以上的异常。

解决办法：需要在pom.xml中增加<webResources>配置，如下：

<build>
<finalName>simple-webapp</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
<configuration>

<webXml>WebContent\WEB-INF\web.xml</webXml>

</configuration>
</plugin>
</plugins>
</build>