try {
    Class.forName("com.mysql.jdbc.Driver");  
    System.out.println("数据库驱动程序注册成功！"); 
    String url = "jdbc:mysql://localhost:3306/mydb";
    String user = "root"; 
    String password = "****"; 
    Connection conn = DriverManager.getConnection(url, user, password); 
    System.out.println("数据库连接成功"); 
    String sql = "select password from Manager where name=?"; 
    //准备从数据库选择密码                                                            
    PreparedStatement prepare = conn.prepareCall(sql);//设定数据库查寻条件
         prepare.clearParameters();
         prepare.setString(1,name);//设定参数
         ResultSet r = prepare.executeQuery();//执行数据库查寻
         if(r.next()){//以下比较输入的号码于密码是否相同
          String pass = r.getString("password").trim();
          if(passWord.regionMatches(0,pass,0,pass.length())){ 
                  System.out.println("登录成功!");
                  ts.setVisible(false);
                  new Manage();
          }
          //否者告诉客户失败
          else System.out.println("登录失败!");
          r.close();}
         else{ 
          System.out.println("false");
          r.close();
          conn.close();
          }
            } catch (ClassNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }