数据库异常处理
异常描述：
严重: Prototype
com.mysql.jdbc.CommunicationsException: Communications link failure due to underlying exception:

** BEGIN NESTED EXCEPTION **

java.net.SocketException
MESSAGE: java.net.NoRouteToHostException: No route to host

STACKTRACE:

java.net.SocketException: java.net.NoRouteToHostException: No route to host
        at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:156)
        at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:276)
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:2641)
        at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
        at java.sql.DriverManager.getConnection(DriverManager.java:582)
        at java.sql.DriverManager.getConnection(DriverManager.java:154)
        at org.logicalcobwebs.proxool.DefaultConnectionBuilder.buildConnection(DefaultConnectionBuilder.java:39)
        at org.logicalcobwebs.proxool.Prototyper.buildConnection(Prototyper.java:159)
        at org.logicalcobwebs.proxool.Prototyper.sweep(Prototyper.java:102)
        at org.logicalcobwebs.proxool.PrototyperThread.run(PrototyperThread.java:44)


** END NESTED EXCEPTION **



Last packet sent to the server was 6 ms ago.
        at com.mysql.jdbc.Connection.createNewIO(Connection.java:2707)
        at com.mysql.jdbc.Connection.<init>(Connection.java:1531)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:266)
        at java.sql.DriverManager.getConnection(DriverManager.java:582)
        at java.sql.DriverManager.getConnection(DriverManager.java:154)
        at org.logicalcobwebs.proxool.DefaultConnectionBuilder.buildConnection(DefaultConnectionBuilder.java:39)
        at org.logicalcobwebs.proxool.Prototyper.buildConnection(Prototyper.java:159)
        at org.logicalcobwebs.proxool.Prototyper.sweep(Prototyper.java:102)
        at org.logicalcobwebs.proxool.PrototyperThread.run(PrototyperThread.java:44)


上述问题一般是防火墙没有关闭造成的 导致网络延迟
需要关闭本地的防火墙 还要关闭其他安全卫士的防火墙 比如360的 我开始的时候本地的关闭了 但是360没有关闭 一直出现上述错误。从而掩盖了其他错误。

似乎不是这个问题 难道是网络问题？后台还是爆出了上述错误。