【SSM整合】SpringMVC + Spring + Mybatis整合详细教程

前言

本文为 SpringMVC + Spring + Mybatis整合教程 相关详细介绍，从数据库数据准备、相关依赖包添加、创建项目基本结构和配置框架，到Mybatis层的编写、Spring层的编写、SpringMVC层的编写，再到前端页面编写等，最后进行运行与测试，按步骤对SSM框架整合进行详细的解析~

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---

目录

一、数据库数据准备

运行以下sql脚本：

CREATE DATABASE `ssm`;
USE `ssm`;
DROP TABLE IF EXISTS `users`;
CREATE TABLE `ssm`.`users`  (
  `user_id` int(11) NOT NULL AUTO_INCREMENT COMMENT '主键',
  `user_name` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '用户名',
  `sex` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '性别,0男，1女',
  `tel` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '联系电话',
  `mail` varchar(50) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '邮件',
  `status` char(1) CHARACTER SET utf8mb4 COLLATE utf8mb4_general_ci NULL DEFAULT NULL COMMENT '状态,0正常，1禁用',
  PRIMARY KEY (`user_id`) USING BTREE
) ENGINE = InnoDB AUTO_INCREMENT = 1 CHARACTER SET = utf8mb4 COLLATE = utf8mb4_general_ci COMMENT = '用户表' ROW_FORMAT = Dynamic;
INSERT INTO `users`(`user_name`, `sex`, `tel`, `mail`, `status`) VALUES 
('admin', '0', '123456', '', '0'),
('user1', '0', '123456', '', '0');
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创建一个名为ssm的数据库，并在此数据库中创建users数据表，表中包含的属性：“用户名”，“性别”，“联系电话”，“邮件”，“状态”。

二、添加相关依赖包

🍀新建一个Maven项目（名称叫ssm-user），并添加web支持后，添加以下pom依赖。

pom.xml：

 <dependencies>
        
        <dependency>
            <groupId>junitgroupId>
            <artifactId>junitartifactId>
            <version>4.12version>
        dependency>
        
        <dependency>
            <groupId>mysqlgroupId>
            <artifactId>mysql-connector-javaartifactId>
            <version>8.0.20version>
        dependency>
        
        <dependency>
            <groupId>com.mchangegroupId>
            <artifactId>c3p0artifactId>
            <version>0.9.5.2version>
        dependency>
        
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>servlet-apiartifactId>
            <version>2.5version>
        dependency>
        <dependency>
            <groupId>javax.servlet.jspgroupId>
            <artifactId>jsp-apiartifactId>
            <version>2.2version>
        dependency>
        <dependency>
            <groupId>javax.servletgroupId>
            <artifactId>jstlartifactId>
            <version>1.2version>
        dependency>
        
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatisartifactId>
            <version>3.5.2version>
        dependency>
        <dependency>
            <groupId>org.mybatisgroupId>
            <artifactId>mybatis-springartifactId>
            <version>2.0.2version>
        dependency>
        
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-webmvcartifactId>
            <version>5.1.9.RELEASEversion>
        dependency>
        <dependency>
            <groupId>org.springframeworkgroupId>
            <artifactId>spring-jdbcartifactId>
            <version>5.1.9.RELEASEversion>
        dependency>
        
        <dependency>
            <groupId>org.projectlombokgroupId>
            <artifactId>lombokartifactId>
            <version>1.18.4version>
        dependency>
    dependencies>
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🍀进行Maven资源过滤设置

pom.xml：

<build>
    <resources>
        <resource>
            <directory>src/main/javadirectory>
            <includes>
                <include>**/*.propertiesinclude>
                <include>**/*.xmlinclude>
            includes>
            <filtering>falsefiltering>
        resource>
        <resource>
            <directory>src/main/resourcesdirectory>
            <includes>
                <include>**/*.propertiesinclude>
                <include>**/*.xmlinclude>
            includes>
            <filtering>falsefiltering>
        resource>
    resources>
build>
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三、创建项目基本结构和配置框架

• com.pojo
• com.dao
• com.service
• com.controller

四、Mybatis层的编写

🍀（1）添加数据库配置文件 database.properties，方便管理

database.properties：

jdbc.driver=com.mysql.cj.jdbc.Driver
jdbc.url=jdbc:mysql://127.0.0.1/ssm?serverTimezone=UTC&&useUnicode=true&&characterEncoding=utf8&&useSSL=false
jdbc.username=root
jdbc.password=root
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🍀（2）添加实体Users，使用lombok来创建get/set方法

Users.java：

package com.pojo;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
/**
 * 用户实体类
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class Users {
    private Integer userId;
    private String userName;
    private String sex;
    private String tel;
    private String mail;
    private String status;
}
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🍀（3）编写Dao层的 Mapper 接口

UsersMapper.java：

package com.dao;
import com.pojo.Users;
import java.util.List;
/**
 * 用户 mapper
 */
public interface UsersMapper {
    /**
     * 查询所有用户
     */
    List<Users> queryAll();
    /**
     * 根据ID查询用户
     */
    Users queryById(int id);
    /**
     * 添加用户
     */
    int addUser(Users users);
    /**
     * 修改用户
     */
    int updateUser(Users users);
    /**
     * 根据ID删除用户
     */
    int deleteById(int id);
}
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🍀（4）编写接口对应的 Mapper.xml 文件

UsersMapper.xml：

DOCTYPE mapper
        PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
        "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.dao.UsersMapper">
    <resultMap id="users" type="com.pojo.Users">
        <result column="user_id" property="userId" />
        <result column="user_name" property="userName" />
        <result column="sex" property="sex" />
        <result column="tel" property="tel" />
        <result column="mail" property="mail" />
        <result column="status" property="status" />
    resultMap>
    <select id="queryAll" resultMap="users">
        SELECT * FROM `users`
    select>
    <select id="queryById" resultMap="users">
        SELECT * FROM `users`
        where user_id = #{id}
    select>
    <insert id="addUser">
        INSERT INTO `users`(`user_name`, `sex`, `tel`, `mail`, `status`)
        VALUES
        (#{userName}, #{sex}, #{tel}, #{mail}, #{status})
    insert>
    <update id="updateUser">
        UPDATE `users` SET
        `user_name` = #{userName},
        `sex` = #{sex},
        `tel` = #{tel},
        `mail` = #{mail}
         WHERE `user_id` = #{userId}
    update>
    <delete id="deleteById">
        delete from users where user_id=#{userId}
    delete>
mapper>
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🍀（5）编写Service层的接口和实现类

UsersService.java：

package com.service;
import com.pojo.Users;
import java.util.List;
public interface UsersService {
    /**
     * 查询所有用户
     */
    List<Users> queryAll();
    /**
     * 根据ID查询用户
     */
    Users queryById(int id);
    /**
     * 添加用户
     */
    int addUser(Users users);
    /**
     * 修改用户
     */
    int updateUser(Users users);
    /**
     * 根据ID删除用户
     */
    int deleteById(int id);
}
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UsersServiceImpl.java：

package com.service.impl;
import com.dao.UsersMapper;
import com.pojo.Users;
import com.service.UsersService;
import java.util.List;
public class UsersServiceImpl implements UsersService {
    //调用dao层的操作，设置一个set接口，方便Spring管理
    private UsersMapper usersMapper;
    public void setUsersMapper(UsersMapper usersMapper) {
        this.usersMapper = usersMapper;
    }
    @Override
    public List<Users> queryAll() {
        return usersMapper.queryAll();
    }
    @Override
    public Users queryById(int id) {
        return usersMapper.queryById(id);
    }
    @Override
    public int addUser(Users users) {
        users.setStatus("0");
        return usersMapper.addUser(users);
    }
    @Override
    public int updateUser(Users users) {
        return usersMapper.updateUser(users);
    }
    @Override
    public int deleteById(int id) {
        return usersMapper.deleteById(id);
    }
}
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五、Spring层的编写

🍀编写Spring整合Mybatis的相关的配置文件

配置Spring整合MyBatis，我们这里数据源使用c3p0连接池。

spring-dao.xml：

<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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd
        http://www.springframework.org/schema/context
        https://www.springframework.org/schema/context/spring-context.xsd">
    
    
    <context:property-placeholder location="classpath:config/database.properties"/>
    
    
    <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="10"/>
        
        <property name="autoCommitOnClose" value="false"/>
        
        <property name="checkoutTimeout" value="10000"/>
        
        <property name="acquireRetryAttempts" value="2"/>
    bean>
    
    <bean id="sqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
        
        <property name="dataSource" ref="dataSource"/>
        
        <property name="configLocation" value="classpath:config/mybatis-config.xml"/>
    bean>
    
    
    <bean class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        
        <property name="sqlSessionFactoryBeanName" value="sqlSessionFactory"/>
        
        <property name="basePackage" value="com.dao"/>
    bean>
beans>
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🍀编写Spring整合service层的相关配置文件

spring-service.xml：

<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"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd">
    
    <context:component-scan base-package="com.service" />
    
    <bean id="UsersServiceImpl" class="com.service.impl.UsersServiceImpl">
        <property name="usersMapper" ref="usersMapper"/>
    bean>
    
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        
        <property name="dataSource" ref="dataSource" />
    bean>
beans>
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spring就是一个容器，作用是用来管理其它东西。

六、SpringMVC层的编写

🍀配置web.xml与spring-mvc.xml配置文件

web.xml：

<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
         version="4.0">
    
    <servlet>
        <servlet-name>DispatcherServletservlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServletservlet-class>
        <init-param>
            <param-name>contextConfigLocationparam-name>
            
            <param-value>classpath:config/applicationContext.xmlparam-value>
        init-param>
        <load-on-startup>1load-on-startup>
    servlet>
    <servlet-mapping>
        <servlet-name>DispatcherServletservlet-name>
        <url-pattern>/url-pattern>
    servlet-mapping>
    
    <filter>
        <filter-name>encodingFilterfilter-name>
        <filter-class>
            org.springframework.web.filter.CharacterEncodingFilter
        filter-class>
        <init-param>
            <param-name>encodingparam-name>
            <param-value>utf-8param-value>
        init-param>
    filter>
    <filter-mapping>
        <filter-name>encodingFilterfilter-name>
        <url-pattern>/*url-pattern>
    filter-mapping>
    
    <session-config>
        <session-timeout>15session-timeout>
    session-config>
web-app>
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spring-mvc.xml：

<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:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context.xsd
    http://www.springframework.org/schema/mvc
    https://www.springframework.org/schema/mvc/spring-mvc.xsd">
    
    
    <mvc:annotation-driven/>
    
    <mvc:default-servlet-handler/>
    
    <bean class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    bean>
    
    <context:component-scan base-package="com.controller"/>
beans>
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🍀编写Controller层

UsersController.java：

package com.controller;
import com.pojo.Users;
import com.service.UsersService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.beans.factory.annotation.Qualifier;
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 java.util.List;
@Controller
@RequestMapping("/users")
public class UsersController {
    @Autowired
    @Qualifier("UsersServiceImpl")
    private UsersService usersService;
    /**
     * 查询所有用户
     */
    @RequestMapping("/all")
    public String list(Model model) {
        List<Users> list = usersService.queryAll();
        model.addAttribute("list", list);
        return "users/allUsers";
    }
    /**
     * 根据ID查询用户
     */
    @RequestMapping("/{id}")
    public String queryById(@PathVariable int id,Model model) {
        model.addAttribute("users",usersService.queryById(id));
        return "users/info";
    }
    /**
     * 去添加用户页面
     */
    @RequestMapping("/toAdd")
    public String toAddUser() {
        return "users/add";
    }
    /**
     * 添加用户
     */
    @RequestMapping("/add")
    public String addUser(Users users) {
        usersService.addUser(users);
        return "redirect:/users/all";
    }
    /**
     * 去修改页面
     * @return
     */
    @RequestMapping("/toUpdate")
    public String toUpdateUser(int id,Model model) {
        model.addAttribute("users",usersService.queryById(id));
        return "users/update";
    }
    /**
     * 修改用户
     */
    @RequestMapping("/update")
    public String updateUser(Users users) {
        usersService.updateUser(users);
        return "redirect:/users/all";
    }
    /**
     * 根据ID删除用户
     */
    @RequestMapping("/del/{id}")
    public String deleteById(@PathVariable int id) {
        usersService.deleteById(id);
        return "redirect:/users/all";
    }
}
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七、前端页面编写

🍀（1）首页： index.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8" %>
<!DOCTYPE HTML>
<html>
<head>
    <title>首页</title>
    <style type="text/css">
        a {
            text-decoration: none;
            color: black;
            font-size: 18px;
        }
        h3 {
            width: 180px;
            height: 38px;
            margin: 100px auto;
            text-align: center;
            line-height: 38px;
            background: deepskyblue;
            border-radius: 4px;
        }
    </style>
</head>
<body>
<h3>
    <a href="${pageContext.request.contextPath}/users/all">点击进入列表页</a>
</h3>
</body>
</html>
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🍀（2）用户列表页面：allUser.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>用户列表</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>
                    <small>用户列表</small>
                </h1>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4 column">
            <a class="btn btn-primary" href="${pageContext.request.contextPath}/users/toAdd">新增</a>
        </div>
    </div>
    <div class="row clearfix">
        <div class="col-md-12 column">
            <table class="table table-hover table-striped">
                <thead>
                <tr>
                    <th>序号</th>
                    <th>用户名称</th>
                    <th>用户性别</th>
                    <th>用户电话</th>
                    <th>操作</th>
                </tr>
                </thead>
                <tbody>
                <c:forEach var="user" items="${requestScope.get('list')}">
                    <tr>
                        <td>${user.getUserId()}</td>
                        <td>${user.getUserName()}</td>
                        <td>${user.getSex()==0?"男":"女"}</td>
                        <td>${user.getTel()}</td>
                        <td>
                            <a href="${pageContext.request.contextPath}/users/${user.getUserId()}">详情</a> |
                            <a href="${pageContext.request.contextPath}/users/toUpdate?id=${user.getUserId()}">更改</a> |
                            <a href="${pageContext.request.contextPath}/users/del/${user.getUserId()}">删除</a>
                        </td>
                    </tr>
                </c:forEach>
                </tbody>
            </table>
        </div>
    </div>
</div>
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🍀（3）添加用户页面：add.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<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>
                    <small>新增用户</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/users/add" method="post">
        用户名称：<input type="text" name="userName"><br><br><br>
        用户性别：
            <input type="radio" name="sex" value="0" checked>男
            <input type="radio" name="sex" value="1">女
        <br><br><br>
        用户电话：<input type="text" name="tel"><br><br><br>
        用户邮箱：<input type="text" name="mail"><br><br><br>
        <input type="submit" value="添加">
    </form>
</div>
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🍀（4）修改用户页面：update.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>修改用户</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>
                    <small>修改用户</small>
                </h1>
            </div>
        </div>
    </div>
    <form action="${pageContext.request.contextPath}/users/update" method="post">
        <input type="hidden" name="userId" value="${users.getUserId()}"/>
        用户名称：<input type="text" name="userName" value="${users.getUserName()}"><br><br><br>
        用户性别：
        <input type="radio" name="sex" value="0" ${users.getSex()==0?"checked":""} >男
        <input type="radio" name="sex" value="1" ${users.getSex()!=0?"checked":""} >女
        <br><br><br>
        用户电话：<input type="text" name="tel" value="${users.getTel()}"><br><br><br>
        用户邮箱：<input type="text" name="mail" value="${users.getMail()}"><br><br><br>
        <input type="submit" value="修改">
    </form>
</div>
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🍀（5）用户详情页面：info.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>详情信息</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>
                    <small>详情信息</small>
                </h1>
            </div>
        </div>
    </div>
    用户名称：${users.getUserName()} <br>
    用户性别：${users.getSex()==0?"男":"女"} <br>
    用户电话：${users.getTel()} <br>
    用户邮箱：${users.getMail()} <br>
    用户状态：${users.getStatus()==0?"正常":"禁用"}  <br>
    <a href="${pageContext.request.contextPath}/users/all">返回</a>
</div>
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八、运行与测试

项目的整体结构如下：

SSM项目整合已经完全的OK，整个项目构建完毕，配置Tomcat就可以运行进行测试！

---

后记

👉Java全栈学习路线可参考：【Java全栈学习路线】最全的Java学习路线及知识清单，Java自学方向指引，内含最全Java全栈学习技术清单~
👉算法刷题路线可参考：算法刷题路线总结与相关资料分享，内含最详尽的算法刷题路线指南及相关资料分享~