java的MySQL連接鏈路故障連接被拒絕

當客戶端connectin到MySQL服務器時，拋出異常java的MySQL連接鏈路故障連接被拒絕

Last packet sent to the server was 0 ms ago. 
     at sun.reflect.GeneratedConstructorAccessor112.newInstance(Unknown Source) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 
     at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) 
     at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1074) 
     at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2103) 
     at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:718) 
     at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:46) 
     at sun.reflect.GeneratedConstructorAccessor110.newInstance(Unknown Source) 
     at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:27) 
     at java.lang.reflect.Constructor.newInstance(Constructor.java:513) 
     at com.mysql.jdbc.Util.handleNewInstance(Util.java:406) 
     at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:302) 
     at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:282) 
     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.ConnectionPool.getConnection(ConnectionPool.java:211) 
     at org.logicalcobwebs.proxool.ProxoolDriver.connect(ProxoolDriver.java:89) 
     at java.sql.DriverManager.getConnection(DriverManager.java:582) 
     at java.sql.DriverManager.getConnection(DriverManager.java:207) 
     at com.chinaren.tools.MysqlConnectionPools.getConnection(MysqlConnectionPools.java:652) 
     .......... 
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:525) 
     at java.net.Socket.connect(Socket.java:475) 
     at java.net.Socket.<init>(Socket.java:372) 
     at java.net.Socket.<init>(Socket.java:215) 
     at com.mysql.jdbc.StandardSocketFactory.connect(StandardSocketFactory.java:253) 
     at com.mysql.jdbc.MysqlIO.<init>(MysqlIO.java:280) 
     at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2026) 
     ... 51 more

1所示：客戶端可以ping DBSERVER是確定
2：客戶端可以telnet DBSERVER：端口就可以了

相同的代碼我的電腦連接到DBSERVER上是好的

是8小時問題？

原因是什麼？

來源

2012-07-12 fuyou001

你提到的8小時是什麼？ – Olaf 2012-07-12 13:20:18

@Olaf連接空閒8小時（默認），MySQL服務器將終止連接 – fuyou001 2012-07-24 10:10:23

java.net.ConnectException: Connection refused：連接被拒絕。這發生在低級別上，意味着該端口未打開，或者連接被防火牆主動拒絕。檢查JDBC URL和/或DataSource配置是否實際使用它應該使用的主機名/ IP和端口。

另外，客戶端實際上是從同一臺計算機執行Ping操作並遠程登錄，因爲這個應用程序正在運行？

來源

2012-07-12 18:26:21

@Rotteveel是的，在同一臺計算機上！ – fuyou001 2012-07-13 13:57:41

java的MySQL連接鏈路故障連接被拒絕

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