關于maven的tomcat7插件之deploy I/O 異常

[INFO] --- tomcat7-maven-plugin:2.2:deploy (default-cli) @ RestApi ---
[INFO] Deploying war to http://localhost:8080/  
Uploading: http://localhost:8080/manager/text/deploy?path=%2F


[INFO] I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
[INFO] Retrying request
Uploading: http://localhost:8080/manager/text/deploy?path=%2F


[INFO] I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
[INFO] Retrying request
Uploading: http://localhost:8080/manager/text/deploy?path=%2F


[INFO] I/O exception (java.net.SocketException) caught when processing request: Connection reset by peer: socket write error
[INFO] Retrying request
Uploading: http://localhost:8080/manager/text/deploy?path=%2F


[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
           

這個是因為在webapps下已經存在了這個項目。無法執行覆寫更新指令，需要執行redeploy指令才可以覆寫更新。或者執行undeploy先解除安裝存在的項目，然後再執行deploy即可。