这个该如何解决？有没有大神看到这个问题？

[INFO] Packaging webapp

[INFO] Assembling webapp [webdemo] in [G:\JavaEE_space\webdemo\target\webdemo]

[INFO] Processing war project

[INFO] Copying webapp resources [G:\JavaEE_space\webdemo\src\main\webapp]

[INFO] Webapp assembled in [26 msecs]

[INFO] Building war: G:\JavaEE_space\webdemo\target\webdemo.war

[INFO] WEB-INF\web.xml already added, skipping

[INFO] ------------------------------------------------------------------------

[INFO] BUILD SUCCESS

[INFO] ------------------------------------------------------------------------

我的配置：

<build>

<finalName>webdemo</finalName>

<plugins>

<plugin>

<groupId>org.apache.tomcat.maven</groupId>

<artifactId>tomcat7-maven-plugin</artifactId>

<version>2.2</version>

<!-- <groupId>org.eclipse.jetty</groupId> -->

<!-- <artifactId>jetty-maven-plugin</artifactId> -->

<!-- <version>9.0.5.v20130815</version> -->

</plugin>

</plugins>

</build>