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【JAVA】ssm框架搭建修改、定向查询实现

2020-07-16 06:08 288 查看

【JAVA】ssm框架搭建注册实现

  • resources包
  • webapp包
  • 效果图

    • 前言

    Java项目实习第七次课后作业：第六次课后续，实现修改、定向查询功能。
    此博客是前面课的后续，其余内容请看一下链接：
    第五次课
    第六次课

    Java包

    controller下的UserController.java

    package com.zr0701.controller;

import com.zr0701.bean.User;
import com.zr0701.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import java.util.List;

@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;

@RequestMapping("/findAll.do")
public ModelAndView findAll(@RequestParam(value = "name",defaultValue = "")String name){
ModelAndView modelAndView = new ModelAndView();
List<User> userList = userService.searchByName(name);
System.out.println("userList中的内容为：" + userList);
modelAndView.addObject("userList",userList);
modelAndView.setViewName("../main");
System.out.println("modeAndView中的内容为：" + modelAndView);
return modelAndView;
}

@RequestMapping("/findById.do")
public String findById(int id, Model model){
User user = userService.findById(id);
model.addAttribute("user",user);
return "../modify";
}

@RequestMapping("/update.do")
public String update(User user){
boolean upd = userService.update(user);
if(upd){
return "redirect:findAll.do";
}
return "../failure";
}
}

    dao下的UserDao.java

    package com.zr0701.dao;

import com.zr0701.bean.User;

import java.util.List;

public interface UserDao {
int update(User user);

User findUserById(Integer id);

List<User> searchByName(String name);
}

    service

    UserService.java

    package com.zr0701.service;

import com.zr0701.bean.User;

import java.util.List;

public interface UserService {
User findById(Integer id);

boolean update(User user);

List<User> searchByName(String name);
}

    Impl下的UserServiceImpl.java

    package com.zr0701.service.Impl;

import com.zr0701.bean.User;
import com.zr0701.dao.UserDao;
import com.zr0701.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class UserServiceImpl implements UserService {

@Autowired
private UserDao userDao;

@Override
public User findById(Integer id) {
return userDao.findUserById(id);
}

@Override
public boolean update(User user) {
int upd = userDao.update(user);
if(upd>0){
return true;
}else {
return false;
}
}

@Override
public List<User> searchByName(String name){
return userDao.searchByName(name);
}
}

    resources包

    mapper下的UserMapper.xml

    <?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.zr0701.dao.UserDao">
<select id="findUserById" parameterType="Integer" resultType="User">
select * from user where id =#{id}
</select>

<update id="update" parameterType="User">
update user set name=#{name},password=#{password} where id=#{id}
</update>

<select id="searchByName" parameterType="String" resultType="User">
select * from user where name like concat('%',#{name},'%');
</select>
</mapper>

    webapp包

    index.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>$Title$</title>
</head>
<body>
<h1>登录页面</h1>
<form action="/user/login.do" method="post">
name:<input name="name" type="text">
password:<input name="password" type="password">
<input type="submit" value="login">
</form>
<a href="/add.jsp">添加</a>
<a href="/user/findAll.do?name=">查看数据</a>
</body>
</html>

    failure.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>失败</title>
</head>
<body>
<h1>失败</h1>
</body>
</html>

    main.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>列表</title>
</head>
<body>
<div>
<form>
<input id="name" type="search" name="name" value="${name}">
<button onclick="form.submit()">搜索</button>
</form>
<table>
<thead>
<tr>
<th>ID</th>
<th>用户名</th>
<th>密码</th>
<th>操作</th>
</tr>
</thead>

<tbody>
<c:forEach items="${userList}" var="user">
<tr>
<td>${user.id}</td>
<td>${user.name}</td>
<td>${user.password}</td>
<td>
<a href="${pageContext.request.contextPath}/user/delete.do?id=${user.id}">删除</a>
<a href="${pageContext.request.contextPath}/user/findById.do?id=${user.id}">修改</a>
</td>
</tr>
</c:forEach>
</tbody>
</table>
</div>
</body>
</html>

    modify.jsp

    <%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
<title>修改</title>
</head>
<body>
<div>
<form action="/user/update.do">
<input name="id" value="${user.id}" type="hidden">
<div>
<label for="name">用户名：</label>
<input name="name" type="text" id="name" value="${user.name}">
</div>
<div>
<label for="password">密码：</label>
<input name="password" type="text" id="password" value="${user.password}">
</div>
<div>
<input type="submit" value="提交">
</div>
<a href="javascript:window.history.go(-1)">返回</a>
</form>
</div>
</body>
</html>

    效果图


    输入54，点击搜索，出现数据

    点击修改

    修改后第二条数据密码变为82

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