RedHat Linux下通過JDBC連接MySQL出現的一個問題

環境

RedHat Linux 9 + VWWare 8.0 + SSH 3.2.9 + Putty 0.62 + MySQL 3.2

問題

通過JDBC連接MySQL出現 com.mysql.jdbc.exceptions.jdbc4.CommunicationsException:Communications link failure

com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications 

link failure      
           
The last packet successfully received from the server was 276 milliseconds ago.  The last packet sent successfully to the server was 50 milliseconds ago.      
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)      
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)      
        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:411)      
        at com.mysql.jdbc.SQLError.createCommunicationsException(SQLError.java:1116)      
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3591)      
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3480)      
        at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:4021)      
        at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:2490)      
        at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:2651)      
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2671)      
        at com.mysql.jdbc.ConnectionImpl.execSQL(ConnectionImpl.java:2621)      
        at com.mysql.jdbc.StatementImpl.executeQuery(StatementImpl.java:1557)      
        at com.mysql.jdbc.ConnectionImpl.loadServerVariables(ConnectionImpl.java:3892)      
        at com.mysql.jdbc.ConnectionImpl.initializePropsFromServer(ConnectionImpl.java:3437)      
        at com.mysql.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:2437)      
        at com.mysql.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:2207)      
        at com.mysql.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:797)      
        at com.mysql.jdbc.JDBC4Connection.<init>(JDBC4Connection.java:47)      
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)      
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:39)      
        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:411)      
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:389)      
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:305)      
        at java.sql.DriverManager.getConnection(DriverManager.java:582)      
        at java.sql.DriverManager.getConnection(DriverManager.java:185)      
        at TestJDBC.getConnection(TestJDBC.java:19)      
        at TestJDBC.testResult(TestJDBC.java:76)      
        at TestJDBC.main(TestJDBC.java:13)      
Caused by: java.io.EOFException: Can not read response from server. Expected to read 4 bytes, read 0 bytes before connection was unexpectedly lost.      
        at com.mysql.jdbc.MysqlIO.readFully(MysqlIO.java:3041)      
        at com.mysql.jdbc.MysqlIO.reuseAndReadPacket(MysqlIO.java:3491)      
        ... 25 more      
java.lang.NullPointerException      
        at TestJDBC.testResult(TestJDBC.java:77)      
        at TestJDBC.main(TestJDBC.java:13)

解決

尚未完成。還請各位賜教。估計是MySQL版本問題。