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Wu_Yang_SKZ, JPcommon wrote:
> java.sql.SQLException: Communication failure during handshake. Is there a 
> server running on localhost:3306?
>       at org.gjt.mm.mysql.MysqlIO.init(MysqlIO.java:275)
>       at org.gjt.mm.mysql.Connection.<init>(Connection.java:230)
>       at org.gjt.mm.mysql.Driver.connect(Driver.java:126)
>       at java.sql.DriverManager.getConnection(DriverManager.java:512)
>       at java.sql.DriverManager.getConnection(DriverManager.java:171)
> 

Wu,

You're using a _very_ old version of the JDBC driver.

Try upgrading to something more recent, like 3.0.16 at
http://dev.mysql.com/downloads/connector/j/3.0.html and see if the
problem goes away.

(This is especially true if you are trying to connect to MySQL 4.1 or
newer).

        -Mark
- --
Mark Matthews
MySQL AB, Software Development Manager - Client Connectivity
Office: +1 708 332 0507
www.mysql.com
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