Tomcat 部署，在部署可能會出現以下問題：

Deployment failure on Tomcat 6.x. Could not copy all resources to E:/apache-tomcat-6.0.16/webapps/HebbnWebServices. If a file is locked, you can wait until the lock times out to redeploy, or stop the server and redeploy, or manually remove the deployment at E:/apache-tomcat-6.0.16/webapps/HebbnWebServices

再次點部署按鈕時就會提示如下：

Undeployment Failure could not be redeployed because it could not be completely removed in the undeployment phase. the most common cuase of this problem is attempting to redeploy while the server is running,which has locked one or more files.

to correct the deployment you will need to stop the server and then redeploy the project before restarting the server.

解決的辦法就是在Eclipse中把專案中引用的jar檔案重新加一遍就行了，基本原因就是以前的jar檔案不存在了，但是專案資訊中還有，即專案的.classpath檔案中還有不存在的jar檔案引用。

可以右鍵點專案名稱，選擇Properties,選擇Java Build Path,選擇Libraries,把所有專案中的jar都remove，然後再點"add jars"，把專案中的jar檔案都加進來，再次部署就正常了。