文章目录

SSM框架搭建

  1. 修改pom.xml文件，添加项目所需要的依赖

  2. 修改项目结构，如下图所示:

  3. 在bean目录下新建User类：

    package com.zhongruan.bean;

public class User {

    private int id;
    private String username;
    private String password;

    public User() {}

    public User(int id, String username, String password) {
        this.id = id;
        this.username = username;
        this.password = password;
    }

    public User(String username, String password) {
        this.username = username;
        this.password = password;
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + '\'' +
                ", password='" + password + '\'' +
                '}';
    }

}

  4. 在dao目录下新建IUserDao接口:

    package com.zhongruan.dao;

import com.zhongruan.bean.User;

import java.util.List;

public interface IUserDao {

    public List<User> searchAllUsers();

    public User searchUserById(int id);

    public boolean insertUser(User user);

    public boolean updateUser(User user);

    public boolean deleteUserById(int id);

}

  5. 在service目录下新建IUserService接口:

    package com.zhongruan.service;

import com.zhongruan.bean.User;

import java.util.List;

public interface IUserService {

    public List<User> searchAllUsers();

    public User searchUserById(int id);

    public boolean insertUser(User user);

    public boolean updateUser(User user);

    public boolean deleteUserById(int id);

}

  6. 在mapper目录下新建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.zhongruan.dao.IUserDao" >
    
    <select id="searchAllUsers" resultType="com.zhongruan.bean.User">select * from tb_user;</select>

    <select id="searchUserById" resultType="com.zhongruan.bean.User">select * from tb_user where id = #{id};</select>

    <delete id="deleteUserById" >delete from tb_user where id = #{id};</delete>

    <update id="updateUser" parameterType="com.zhongruan.bean.User">update tb_user set username = #{username} , password = #{password} where id = #{id};</update>

    <insert id="insertUser" parameterType="com.zhongruan.bean.User">insert into tb_user(username, password) values (#{username}, #{password});</insert>

</mapper>

  7. 在service目录下新建impl目录，在impl下新建IUserService接口的实现类UserServiceImpl

    package com.zhongruan.service.impl;

import com.zhongruan.bean.User;
import com.zhongruan.dao.IUserDao;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.List;

@Service //
public class UserServiceImpl implements IUserService {

    @Autowired
    IUserDao userDao;

    @Override
    public List<User> searchAllUsers() {

        return userDao.searchAllUsers();
    }

    @Override
    public User searchUserById(int id) {

        return userDao.searchUserById(id);
    }

    @Override
    public boolean insertUser(User user) {

        return userDao.insertUser(user);
    }

    @Override
    public boolean updateUser(User user) {

        return userDao.updateUser(user);
    }

    @Override
    public boolean deleteUserById(int id) {

        return userDao.deleteUserById(id);
    }

}

  8. 在resources目录下新建db.properties文件

   jdbc.driver=com.mysql.cj.jdbc.Driver
   jdbc.url=jdbc:mysql://localhost:3306/db_test?useSSL=false&serverTimezone=UTC&characterEncoding=utf-8
   jdbc.username=root
   jdbc.password=123456

  1. 在resources目录下新建applicationContext.xml文件

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:aop="http://www.springframework.org/schema/aop" xmlns:tx="http://www.springframework.org/schema/tx" xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.3.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.3.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">
    <!-- 1.配置数据库相关参数properties的属性：${url} -->
    <context:property-placeholder location="classpath:db.properties"/>

    <!-- 2.配置数据源 -->
    <bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource">
        <property name="driverClass" value="${jdbc.driver}"/>
        <property name="jdbcUrl" value="${jdbc.url}"/>
        <property name="user" value="${jdbc.username}"/>
        <property name="password" value="${jdbc.password}"/>
        <property name="maxPoolSize" value="30"/>
        <property name="minPoolSize" value="2"/>
    </bean>

    <!-- 3.配置SqlSessionFactory对象 -->
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        <!-- 注入数据库连接池 -->
        <property name="dataSource" ref="dataSource"/>
        <!-- 扫描bean包 使用别名 -->
        <property name="typeAliasesPackage" value="com.zhongruan.bean"/>
        <!--配置加载映射文件 UserMapper.xml-->
        <property name="mapperLocations" value="classpath:mapper/*.xml"/>
    </bean>

    <!-- 自动生成dao, mapper -->
    <!-- 4.配置扫描Dao接口包，动态实现Dao接口，注入到spring容器中 -->
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        <!-- 给出需要扫描Dao接口包 -->
        <property name="basePackage" value="com.zhongruan.dao"/>
        <!-- 注入sqlSessionFactory -->
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
    </bean>

    <!--自动扫描-->
    <context:component-scan base-package="com.zhongruan"/>

    <!-- 配置事务-->
    <!-- 5.配置事务管理器 -->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
    <!-- 6.开启事务注解-->
    <tx:annotation-driven/>

</beans>

  2. 在resources目录下新建spring-mvc.xml文件

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:aop="http://www.springframework.org/schema/aop"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
      http://www.springframework.org/schema/beans/spring-beans-4.3.xsd
      http://www.springframework.org/schema/mvc
      http://www.springframework.org/schema/mvc/spring-mvc-4.3.xsd
      http://www.springframework.org/schema/context
      http://www.springframework.org/schema/context/spring-context-4.3.xsd
      http://www.springframework.org/schema/aop
      http://www.springframework.org/schema/aop/spring-aop-4.3.xsd
      http://www.springframework.org/schema/tx
      http://www.springframework.org/schema/tx/spring-tx-4.3.xsd">

    <!-- 1.注解扫描位置-->
    <context:component-scan base-package="com.zhongruan.controller" />

    <!-- 2.配置映射处理和适配器-->
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping"/>
    <bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter"/>

    <!-- 3.视图的解析器-->
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>
</beans>

  3. 在webapp中创建如下目录结构:

  4. 修改index.jsp

    <%@page contentType="text/html;UTF-8" pageEncoding="UTF-8" %>
<%
    pageContext.setAttribute("path", request.getContextPath());
%>
<html>
<head>
    <title>首页</title>
</head>
<body>
    <h2>Hello World!</h2>
    <hr>
    <a href="${path}/user/searchAllUser.do">点击进入查找用户</a>
</body>
</html>

  5. 在controller目录下创建UserController类

    package com.zhongruan.controller;

import com.zhongruan.bean.User;
import com.zhongruan.service.IUserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.PathVariable;
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 IUserService userService;

    @RequestMapping("/searchAllUser.do")
    public ModelAndView searchAllUser() {

        List<User> userList = userService.searchAllUsers();
        ModelAndView modelAndView = new ModelAndView();
        modelAndView.addObject("users", userList);
        modelAndView.setViewName("allUser");
        return modelAndView;
    }

    @RequestMapping("/toAddUser.do")
    public String toAddUser() {

        return "addUser";
    }

    @RequestMapping("/addUser.do")
    public ModelAndView addUser(User user) {

        ModelAndView modelAndView = new ModelAndView();
        userService.insertUser(user);
        modelAndView.setViewName("redirect:/user/searchAllUser.do");
        return modelAndView;
    }

    @RequestMapping("/delete.do")
    public String deleteUser(@PathVariable() int id) {

        userService.deleteUserById(id);
        return "redirect:/user/searchAllUser.do";
    }

    @RequestMapping("/toUpdate.do")
    public String toUpdateUser(Model model, int id) {

        model.addAttribute("user", userService.searchUserById(id));
        return "updateUser";
    }

    @RequestMapping("/update.do")
    public ModelAndView updateUser(User user) {

        ModelAndView modelAndView = new ModelAndView();
        userService.updateUser(user);
        modelAndView.setViewName("redirect:/user/searchAllUser.do");
        return modelAndView;
    }

}

  6. 编辑allUser.jsp

    <%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" isELIgnored="false"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
    <title>user列表</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    基于SSM框架的管理系统：简单实现增、删、改、查。
                </h1>
            </div>
        </div>
    </div>

    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>用户列表 —— 显示所有用户</small>
                </h1>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/user/toAddUser.do">新增</a>
        </div>
    </div>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <table class="table table-hover table-striped">
                <thead>
                <tr>
                    <th>id</th>
                    <th>用户名</th>
                    <th>密码</th>
                    <th>操作</th>
                </tr>
                </thead>
                <tbody>
                <c:forEach items="${users}" var="userInfo">
                    <tr>
                        <td>${userInfo.id}</td>
                        <td>${userInfo.username}</td>
                        <td>${userInfo.password}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/user/toUpdate.do?id=${userInfo.id}">更改</a> |
                            <a href="${pageContext.request.contextPath}/user/delete.do?id=${userInfo.id}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>

  7. 编辑addUser.jsp

    <%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" isELIgnored="false"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<html>
<head>
    <title>新增用户</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    基于SSM框架的管理系统：简单实现增、删、改、查。
                </h1>
            </div>
        </div>
    </div>

    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>新增用户</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/user/addUser.do"
              method="post">
        <%--用&nbsp;&nbsp;户&nbsp;&nbsp;id：<input type="text" name="id"><br><br><br>--%>
        用户姓名：<input type="text" name="username"><br><br><br>
        用户密码：<input type="text" name="password"><br><br><br>
        <input type="submit" value="添加" >
    </form>

</div>

  8. 编辑updateUser.jsp

    <%@ page language="java" contentType="text/html; charset=UTF-8"
         pageEncoding="UTF-8" isELIgnored="false"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<html>
<head>
    <title>修改论文</title>
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <!-- 引入 Bootstrap -->
    <link href="https://cdn.bootcss.com/bootstrap/3.3.7/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    基于SSM框架的管理系统：简单实现增、删、改、查。
                </h1>
            </div>
        </div>
    </div>

    <div class="row clearfix">
        <div class="col-md-12 column">
            <div class="page-header">
                <h1>
                    <small>修改用户</small>
                </h1>
            </div>
        </div>
    </div>

    <form action="${pageContext.request.contextPath}/user/update.do" method="post">
        <input type="hidden" name="id" value="${user.id}"/>
        用户姓名：<input type="text" name="username" value="${user.username}"/>
        用户密码：<input type="text" name="password" value="${user.password}"/>
        <input type="submit" value="提交" />
    </form>
</div>

  9. 部署项目