Maven项目在Maven启动的时候出现:Address already in use: JVM_Bind<null>:8080

Maven项目在Maven  Build启动的时候出现:Address already in use: JVM_Bind<null>:8080

ERROR如下：
[ERROR] Failed to execute goal org.apache.tomcat.maven:tomcat6-maven-plugin:2.2:run (default-cli) on project taotao-manager-web: Could not start Tomcat: Protocol handler initialization failed: java.net.BindException: Address already in use: JVM_Bind <null>:8080
-> [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
[ERROR]
 [ERROR] After correcting the problems, you can resume the build with the command

[ERROR]   mvn <goals> -rf :taotao-manager-web

截图如下：



看了网上很多教程:比如说Kill掉端口号之类的，但是不能根本解决问题。
于是我开始思考，既然端口号被占用，那是不是没有关闭tomcat，导致的冲突。
后来发现，还真的是啊！

正确做法：



点击上面图中，第一行Debug旁边的红色停止键，再次重新启动，问题就解决了。
如果红色停止键无法点击，则可能是需要先点击红色停止键旁边的X，再点红色停止键