一个关于mysql connection refused 的问题
我测试用的是vm做的linux虚拟机，通过java的jdbc包连接mysql，不知道为什么运行一段时间之后出现以下的错误，我没有用任何的连接池，就是长时间运行之后就报错了，谢谢牛人解答，异常如下Caused by: com.mysql.jdbc.CommunicationsException: Communications link failure
Last packet sent to the server was 0 ms ago.
at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1070)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:335)
at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2043)
... 9 more
Caused by: java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.PlainSocketImpl.doConnect(PlainSocketImpl.java:333)
at java.net.PlainSocketImpl.connectToAddress(PlainSocketImpl.java:195)
at java.net.PlainSocketImpl.connect(PlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:366)
at java.net.Socket.connect(Socket.java:520)
at java.net.Socket.connect(Socket.java:470)
at java.net.Socket.<init>(Socket.java:367)
at java.net.Socket.<init>(Socket.java:209)
at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253)
at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:284)
... 10 more 是不是vm和网络的问题呢？检查之...
再看看你的MySQL wait_timeout参数是不是设置的过小。
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