mysql-求求大神帮个忙。。。。。非常感谢！！！！！！

 package edu.jju.jdbc.example.dao;import com.mchange.v2.c3p0.ComboPooledDataSource;import java.sql.SQLException;import java.util.Map;import javax.sql.DataSource;import org.apache.commons.dbutils.QueryRunner;import org.apache.commons.dbutils.handlers.KeyedHandler;/** * * @author Administrator */public class ResultSetTest09 {      public static DataSource ds = null;    //初始化C3P0数据源    static {        ComboPooledDataSource cpds = new ComboPooledDataSource();        ds = cpds;    }    public static void testKeyedHandler() throws SQLException {        String sql = "select id,name,password from user";        QueryRunner qr = new QueryRunner(ds);        Map<Object, Map<String, Object>> map = qr.query(sql, new KeyedHandler<Object>("id"));        Map umap = (Map) map.get(new Integer(1));        String uname = (String) umap.get("name");        String upassword = (String) umap.get("password");        System.out.println(uname + ":" + upassword);    }    public static void main(String[] args) throws SQLException {        testKeyedHandler();    }}