云服务器ECS，mysql为什么老是报“Communicationslinkfailure”异常，什么问题？

ECS环境：win2003，mysql5.5
都是通过云主机助手构建java环境。现在项目在运行的时候动不动就抛以下异常~求大神们指点迷津！！！


Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link failure


Last packet sent to the server was 0 ms ago.
    at sun.reflect.GeneratedConstructorAccessor34.newInstance(Unknown Source)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:526)
    at com.mysql.jdbc.Util.handleNewInstance(Util.java:406)
    at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2985)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2871)
    at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:3414)
    at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1936)
    at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2060)
    at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2542)
    at com.mysql.jdbc.PreparedStatement.executeInternal(PreparedStatement.java:1734)
    at com.mysql.jdbc.PreparedStatement.execute(PreparedStatement.java:995)
    at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:172)
    at org.apache.commons.dbcp.DelegatingPreparedStatement.execute(DelegatingPreparedStatement.java:172)
    at org.apache.ibatis.executor.statement.PreparedStatementHandler.query(PreparedStatementHandler.java:39)
    at org.apache.ibatis.executor.statement.RoutingStatementHandler.query(RoutingStatementHandler.java:55)
    at sun.reflect.GeneratedMethodAccessor38.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:606)
    at org.apache.ibatis.plugin.Plugin.invoke(Plugin.java:44)
    at com.sun.proxy.$Proxy24.query(Unknown Source)
    at org.apache.ibatis.executor.SimpleExecutor.doQuery(SimpleExecutor.java:41)
    at org.apache.ibatis.executor.BaseExecutor.queryFromDatabase(BaseExecutor.java:243)
    at org.apache.ibatis.executor.BaseExecutor.query(BaseExecutor.java:117)
    at org.apache.ibatis.executor.CachingExecutor.query(CachingExecutor.java:72)
    ... 57 more
Caused by: java.net.SocketException: Software caused connection abort: recv failed
    at java.net.SocketInputStream.socketRead0(Native Method)
    at java.net.SocketInputStream.read(SocketInputStream.java:152)
    at java.net.SocketInputStream.read(SocketInputStream.java:122)
    at com.mysql.jdbc.util.ReadAheadInputStream.fill(ReadAheadInputStream.java:113)
    at com.mysql.jdbc.util.ReadAheadInputStream.readFromUnderlyingStreamIfNecessary(ReadAheadInputStream.java:160)
    at com.mysql.jdbc.util.ReadAheadInputStream.read(ReadAheadInputStream.java:188)
    at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:2428)
    at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:2882)
    ... 77 more