使用dubbo ，编译正常， 在浏览器访问项目的时候就报内存溢出。
[WARN] 2017-05-11 13:25:24,905 com.alibaba.dubbo.config.AbstractConfig - [DUBBO] ReferenceConfig(null) is not DESTROYED when FINALIZE, dubbo version: 2.5.3, current host: 192.168.4.117
Exception in thread "http-bio-8082-exec-1"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "http-bio-8082-exec-1"
五月 11, 2017 1:26:03 下午 org.apache.catalina.core.ContainerBase$ContainerBackgroundProcessor run
严重: Unexpected death of background thread ContainerBackgroundProcessor[StandardEngine[Catalina]]
java.lang.OutOfMemoryError: PermGen space
Exception in thread "ContainerBackgroundProcessor[StandardEngine[Catalina]]"
Exception: java.lang.OutOfMemoryError thrown from the UncaughtExceptionHandler in thread "ContainerBackgroundProcessor[StandardEngine[Catalina]]"
[WARN] 2017-05-11 13:26:19,367 org.apache.zookeeper.ClientCnxn - Client session timed out, have not heard from server in 20859ms for sessionid 0x15bf5f638a70000
[WARN] 2017-05-11 13:26:36,605 org.apache.zookeeper.ClientCnxn - Client session timed out, have not heard from server in 31323ms for sessionid 0x15bf5f638a70002
[INFO] 2017-05-11 13:26:37,577 org.I0Itec.zkclient.ZkClient - zookeeper state changed (Disconnected)
