tank/UserActiondyh.java

package com.controller;

import java.util.List;

import com.dao.UserDaodyh;
import com.entity.Userdyh;

public class UserActiondyh {
    public String login(String username, String passwd) {
        String result = null;
        try {
            List<Userdyh> userList = UserDaodyh.query();
            for (Userdyh user : userList) {
                if (user.getUserName().equals(username) && user.getPassword().equals(passwd)) {
                    result = "1";
                } else if(username.equals("") || passwd.equals("")) {
                    result = "2";
                }
                else result="3";
            }
        } catch (Exception e) {

            e.printStackTrace();
        }
        return result;
    }
}