[equinox-dev] equinox mysql error

["刘伦" <657858681@xxxxxx>]

Hi
I'm a chinese student.

I'm writing a plugin that connects to a mysql database, when I used whiting

eclipse it works correctly, however when I try to run it in the standalone

equinox does not works

the message is:

java.sql.SQLException: java.lang.NoClassDefFoundError: javax/naming/RefAddr
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:1073)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:987)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:982)
        at com.mysql.jdbc.SQLError.createSQLException(SQLError.java:927)
        at com.mysql.jdbc.Util.handleNewInstance(Util.java:431)
        at com.mysql.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:378)
        at com.mysql.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java
:305)
        at java.sql.DriverManager.getConnection(Unknown Source)
        at java.sql.DriverManager.getConnection(Unknown Source)

I have Try

Activator.getContext().getBundle().loadClass(driver).newInstance();

And

Class.forName(driver).newInstance();

connection = DriverManager.getConnection(url + dbName, userName, password);

I also try to add more bundles but still nothing

any help will be appreciate it

thanks in advance