Java事件处理：登录功能实现

 public void actionPerformed(ActionEvent e){
if(e.getSource()==登录){
    String name=用户名.getText().toString();
    String u=null,pwd=null,auth=null;
    String url="jdbc:odbc:mysql";
        Connection conn;
        try
        {
         Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
        }catch(Exception ex)
        {
        ex.printStackTrace();
            System.out.println("找不到驱动程序");
        }
        try
        {
            conn=DriverManager.getConnection(url,"","");
            String sql;
            Statement stmt;
        ResultSet rs;
        stmt=conn.createStatement();  
            sql="select 用户名,密码,使用权限 from [GINO].[dbo].[user] where 用户名='"+name+"'";
            rs=stmt.executeQuery(sql);    
            while(rs.next())
           {
             u=rs.getString("用户名");
                 pwd=rs.getString("密码");
                 auth=rs.getString("使用权限");
               }
           judgeUser(u,pwd,auth,密码.getText());   //自定义函数