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
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