tank/UserDaodyh.java

package com.dao;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

import com.entity.Userdyh;
import com.utils.DBUtilhxr;

public class UserDaodyh {
    public static List<Userdyh> query() throws Exception{
        Connection con = DBUtilhxr.getConnection();
        Statement stmt = con.createStatement();
        ResultSet rs = stmt.executeQuery("select id,user,password from user_info");
        List<Userdyh> userList = new ArrayList<Userdyh>();
        Userdyh user = null;
        // 如果对象中有数据，就会循环打印出来
        while (rs.next()){
            user = new Userdyh();	// 调用模型层
            user.setID(rs.getInt("id"));
            user.setUserName(rs.getString("user"));
            user.setPassword(rs.getString("password"));
            userList.add(user);
        }
        return userList;
    }
}