一. 前言
在前面的SpringBoot学习过程中，我写过一篇通过SpringBoot整合Mybatis，做一个简单增删改查功能，Mybatis的的SQL语句使用注解形式：SpringBoot 系列教程(三十)：SpringBoot整合Mybatis注解版增删改查，今天准备来出一个SpringBoot整合Mybatis增删改查XML版的，Mybatis的的SQL语句使用XML配置的形式，毕竟注解形式适合单表查询和一些简单查询，复杂的查询功能还是在XML里面写，统一管理比较好，看起来也比较舒服，易读；
二.准备工作
目标： 本次目标我们以User（用户）来做例子演示
2.1 创建SpringBoot项目
1.引入pom依赖：
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.3.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.thinkingcao</groupId>
<artifactId>springboot-mybatis-xml</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>springboot-mybatis-xml</name>
<description>Demo project for Spring Boot</description>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.0</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<!--<scope>runtime</scope>-->
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>druid</artifactId>
<version>1.0.29</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<!-- spring-boot-devtools热启动依赖包 start-->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
<scope>runtime</scope>
</dependency>
<!-- spring-boot-devtools热启动依赖包 end-->
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<!--fork : 如果没有该项配置，肯呢个devtools不会起作用，即应用不会restart 这个要手动加进去 -->
<fork>true</fork>
</configuration>
</plugin>
</plugins>
</build>
</project>
2. 项目目录完整截图
2.2 创建数据库表mybatis-xml
1. SQL脚本
SET FOREIGN_KEY_CHECKS=0;
-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
`id` int(11) NOT NULL COMMENT '主键Id',
`name` varchar(200) DEFAULT NULL COMMENT '姓名',
`gender` varchar(200) DEFAULT NULL COMMENT '性别',
`age` int(10) DEFAULT NULL COMMENT '年龄',
`address` varchar(200) DEFAULT NULL COMMENT '地址',
`qq` varchar(100) DEFAULT NULL COMMENT 'QQ',
`email` varchar(200) DEFAULT NULL COMMENT '邮箱',
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
-- ----------------------------
-- Records of user
-- ----------------------------
INSERT INTO `user` VALUES ('1', '曹某人', '男', '22', '上海', '617271939', '[email protected]');
INSERT INTO `user` VALUES ('2', '曹文哒哒哒哒哒', '女', '100', '上海', '129900555', '[email protected]');
INSERT INTO `user` VALUES ('3', '曹曹', '男', '24', '上海', '289087899', '[email protected]');
INSERT INTO `user` VALUES ('6', '李四', 'option1', '27', '上海市徐汇区徐家汇街道', '78945248', '[email protected]');
INSERT INTO `user` VALUES ('8', '张三', 'option2', '25', '上海市徐汇区徐家汇', '137982901', '[email protected]');
SET FOREIGN_KEY_CHECKS=1;
2. 表结构
2.3 配置application.yml
1. application.yml配置
#server端口配置
server:
port: 8081
#数据库连接配置
spring:
datasource:
url: jdbc:mysql://localhost:3306/mybatis-xml?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull&serverTimezone=GMT%2B8
username: root
password: 123456
#数据源配置
type: com.alibaba.druid.pool.DruidDataSource
driverClassName: com.mysql.cj.jdbc.Driver
#HTML配置
thymeleaf:
prefix: classpath:/templates/
suffix: .html
#热部署配置
devtools:
livereload:
enabled: true #是否支持livereload
restart:
enabled: true #是否支持热部署
#Mybatis配置
mybatis:
config-location: classpath:config/mybatis-config.xml #mybatis配置文件位置
mapper-locations: classpath:mapper/*.xml #mapper.xml 文件地址
type-aliases-package: com.thinkingcao.springboot.entity #实体类别名
#日志配置
logging:
level:
com.thinkingcao.springboot.mapper: debug #项目日志配置
org.springframework.web: DEBUG #Spring框架日志配置
2. application.yml截图
2.4 Mybatis相关配置
1. 配置mybatis-config.xml
在SpringBoot的resources目录下新建config文件夹，用于存放Mybatis的全局配置文件mybatis-config.xml
mybatis-cnfig.xml如下:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias alias="Integer" type="java.lang.Integer" />
<typeAlias alias="Long" type="java.lang.Long" />
<typeAlias alias="HashMap" type="java.util.HashMap" />
<typeAlias alias="LinkedHashMap" type="java.util.LinkedHashMap" />
<typeAlias alias="ArrayList" type="java.util.ArrayList" />
<typeAlias alias="LinkedList" type="java.util.LinkedList" />
</typeAliases>
</configuration>2. 配置mybatis的mapper.xml文件存放
在SpringBoot的resources目录下新建mapper文件夹，用于存放Mybatis的sql语句管理文件*mapper.xml
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.thinkingcao.springboot.mapper.UserMapper">
<!--查询所有用户-->
<select id="getAllUser" resultType="User">
select * from user
</select>
<!--添加用户-->
<insert id="InsertUser" parameterType="User">
insert into
user(
id,
name,
gender,
age,
address,
qq,
email)
values(
#{id,jdbcType=INTEGER},
#{name,jdbcType=VARCHAR},
#{gender,jdbcType=VARCHAR},
#{age,jdbcType=INTEGER},
#{address,jdbcType=VARCHAR},
#{qq,jdbcType=VARCHAR},
#{email,jdbcType=VARCHAR}
)
</insert>
<!--删除用户-->
<delete id="delUserById" parameterType="java.lang.Integer">
delete from user where id=#{id}
</delete>
<!--根据id查询用户-->
<select id="getUserById" resultType="User">
select * from user where id=#{id}
</select>
<!--更改用户信息-->
<update id="UpdateUser" parameterType="User">
update user set name=#{name},gender=#{gender},age=#{age},address=#{address},qq=#{qq},email=#{email} where id=#{id}
</update>
</mapper>
2.5 User实体类配置
package com.thinkingcao.springboot.entity;
import lombok.Data;
/**
* @desc: User实体类
* @author: cao_wencao
* @date: 2019-11-14 17:32
*/
@Data
public class User {
private Integer id;
private String name;
private String gender;
private Integer age;
private String address;
private String qq;
private String email;
}
2.6 UserMapper接口配置
package com.thinkingcao.springboot.mapper;
import com.thinkingcao.springboot.entity.User;
import org.apache.ibatis.annotations.*;
import java.util.List;
/**
* @desc: UserMapper持久层
* @auth: cao_wencao
* @date: 2019/11/14 17:34
*/
@Mapper
public interface UserMapper {
//查询所有用户
// @Select("select * from user")
public List<User> getAllUser();
//根据id查询单个用户
// @Select("select * from user where id=#{id}")
public User getUserById(Integer id);
//根据id删除单个用户
// @Delete("delete from user where id=#{id}")
public int delUserById(Integer id);
//更新单个用户
// @Update("update user set gender=#{gender},age=#{age},address=#{address},qq=#{qq},email=#{email} where name=#{name}")
public int UpdateUser(User user);
//新增单个用户
//@Options(useGeneratedKeys = true, keyProperty = "id")//是指定主键生成的并且主键是id
// @Insert("insert into user(name,gender,age,address,qq,email) values (#{name},#{gender},#{age},#{address},#{qq},#{email})")
public int InsertUser(User user);
}
2.7 UserService接口配置
package com.thinkingcao.springboot.service;
import com.thinkingcao.springboot.entity.User;
import com.thinkingcao.springboot.mapper.UserMapper;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import java.util.List;
/**
* @desc: UserService业务层
* @auth: cao_wencao
* @date: 2019/11/14 17:34
*/
@Service
public class UserService {
@Resource
private UserMapper userMapper;
public List<User> userList(){
return userMapper.getAllUser();
}
public int insert(User user){
return userMapper.InsertUser(user);
}
public int delete(Integer id){
return userMapper.delUserById(id);
}
public int update(User user){
return userMapper.UpdateUser(user);
}
public User getById(Integer id){
return userMapper.getUserById(id);
}
}
2.8 UserController配置
package com.thinkingcao.springboot.controller;
import com.thinkingcao.springboot.entity.User;
import com.thinkingcao.springboot.service.UserService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
/**
* @desc: UserController控制层
* @auth: cao_wencao
* @date: 2019/11/14 17:35
*/
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/index")
public String index(Model model) {
model.addAttribute("users", userService.userList());
return "list";
}
/*查询用户列表*/
@RequestMapping("/list")
public String userList(Model model) {
model.addAttribute("users", userService.userList());
return "list";
}
/*删除用户*/
@RequestMapping("/del")
public String deleteUser(Integer id) {
userService.delete(id);
return "redirect:/list";
}
/*添加用户页面*/
@RequestMapping("/add")
public String addUser(ModelMap map) {
map.addAttribute("user", new User());
return "add";
}
/*更新用户页面*/
@RequestMapping("/update")
public String updateUser(Model model,Integer id) {
User user =userService.getById(id);
model.addAttribute("user", user);
return "update";
}
/*添加完用户后重定向到list页面*/
@RequestMapping("/saveI")
public String saveI(@ModelAttribute User user) {
userService.insert(user);
return "redirect:/list";
}
/*更新完用户后重定向到list页面*/
@RequestMapping("/saveU")
public String saveU(@ModelAttribute User user) {
userService.update(user);
return "redirect:/list";
}
}2.9 启动类
package com.thinkingcao.springboot;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringbootMybatisXmlApplication {
public static void main(String[] args) {
SpringApplication.run(SpringbootMybatisXmlApplication.class, args);
}
}
2.10 引入BootStrap的JS和CSS文件
引入如下图所示的JS和CSS文件，用户增删改查界面渲染
三、增删改查
1. 用户列表页面
访问地址： http://127.0.0.1:8081/list
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>用户列表页面</title>
<link href="../static/css/bootstrap.min.css" th:href="@{/css/bootstrap.min.css}" rel="stylesheet"/>
<script src="../static/js/bootstrap.min.js" th:src="@{/js/bootstrap.min.js}"></script>
<script src="../static/js/jquery.min.js" th:src="@{/js/jquery.min.js}"></script>
<style>
/*设置表格th标题居中显示*/
.table th, .table td {
text-align: center;
vertical-align: middle!important;
}
</style>
</head>
<body>
<fieldset style="width:250px; margin:0px auto">
<p>
<h2>学生信息列表</h2>
</p>
</fieldset>
<div class="table-responsive">
<table class="table table-bordered" style="width: 70%;margin:0px auto">
<thead>
<tr class="success">
<th><input type="checkbox" id="checkAll"/></th>
<th style="font-weight: bold">编号</th>
<th>姓名</th>
<th>性别</th>
<th>年龄</th>
<th>地址</th>
<th>QQ</th>
<th>邮箱</th>
<th>操作</th>
</tr>
</thead>
<tbody id="mytbd">
<tr th:each="user : ${users}">
<th><input type="checkbox" id="checkAll"/></th>
<td th:text="${user.id}"></td>
<td th:text="${user.name}"></td>
<td th:text="${user.gender}"></td>
<td th:text="${user.age}"></td>
<td th:text="${user.address}"></td>
<td th:text="${user.qq}"></td>
<td th:text="${user.email}"></td>
<td>
<a class="btn btn-info" th:href="@{/del(id=${user.id})}">删除</a>
<a class="btn btn-info" th:href="@{/update(id=${user.id})}">修改</a>
<a class="btn btn-info" th:href="@{/add}">添加</a>
</td>
<!--<td>-->
<!--<ul class="dropdown-menu" role="menu">-->
<!--<li><a href="#">修改</a></li>-->
<!--<li><a href="#">删除</a></li>-->
<!--</ul>-->
<!--</td>-->
</tr>
</tbody>
</table>
</div>
</body>
</html>效果图
2. 用户添加页面
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>用户添加页面</title>
<link href="../static/css/bootstrap.min.css" th:href="@{/css/bootstrap.min.css}" rel="stylesheet"/>
<script src="../static/js/bootstrap.min.js" th:src="@{/js/bootstrap.min.js}"></script>
<script src="../static/js/jquery.min.js" th:src="@{/js/jquery.min.js}"></script>
</head>
<body>
<fieldset style="width:180px; margin:0px auto">
<p>
<h2>学生信息增加</h2>
</p>
</fieldset>
<form class="form-horizontal" th:action="@{/saveI}" th:object="${user}" method="post" style="width: 35%;margin:0px auto">
<div class="form-group">
<label for="id" class="col-sm-2 control-label">编号:</label>
<div class="col-sm-10">
<input type="number" class="form-control" th:field="*{id}" id="id" placeholder="请输入编号">
</div>
</div>
<div class="form-group">
<label for="name" class="col-sm-2 control-label">姓名:</label>
<div class="col-sm-10">
<input type="text" class="form-control" th:field="*{name}" id="name" placeholder="请输入姓名">
</div>
</div>
<div class="form-group">
<label for="name" class="col-sm-2 control-label">姓别:</label>
<div class="col-sm-10">
<label class="radio-inline">
<input type="radio" name="gender" th:field="*{gender}" id="boy" value="男" checked>男
</label>
<label class="radio-inline">
<input type="radio" name="gender" th:field="*{gender}" id="gril" value="女">女
</label>
</div>
</div>
<div class="form-group">
<label for="age" class="col-sm-2 control-label">年龄:</label>
<div class="col-sm-10">
<input type="number" class="form-control" th:field="*{age}" id="age" placeholder="请输入年龄">
</div>
</div>
<div class="form-group">
<label for="address" class="col-sm-2 control-label">地址:</label>
<div class="col-sm-10">
<input type="text" class="form-control" th:field="*{address}" id="address" placeholder="请输入地址">
</div>
</div>
<div class="form-group">
<label for="qq" class="col-sm-2 control-label">QQ:</label>
<div class="col-sm-10">
<input type="text" class="form-control" th:field="*{qq}" id="qq" placeholder="请输入QQ">
</div>
</div>
<div class="form-group">
<label for="email" class="col-sm-2 control-label">邮箱:</label>
<div class="col-sm-10">
<input type="text" class="form-control input-sm" th:field="*{email}" id="email" placeholder="请输入邮箱">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-info btn-lg btn-block">确定</button>
</div>
</div>
<!--编号: <input type="number" name="id"><br>-->
<!--姓名: <input type="text" id="name" name="name"><br>-->
<!--性别: <input type="text" id="gender" name="gender"><br>-->
<!--年龄: <input type="number" id="age" name="age"><br>-->
<!--地址: <input type="text" id="address" name="address"><br>-->
<!--QQ: <input type="text" id="qq" name="qq"><br>-->
<!--邮箱: <input type="text" id="email" name="email"><br>-->
<!--<input type="submit">-->
</form>
</body>
</html>效果图
3. 用户更新页面
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml"
xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>用户更新页面</title>
<link href="../static/css/bootstrap.min.css" th:href="@{/css/bootstrap.min.css}" rel="stylesheet"/>
<script src="../static/js/bootstrap.min.js" th:src="@{/js/bootstrap.min.js}"></script>
<script src="../static/js/jquery.min.js" th:src="@{/js/jquery.min.js}"></script>
</head>
<body>
<!--<form th:action="@{/saveU}" th:object="${user}" method="post">-->
<!--编号: <input type="number" name="id" th:value="*{user.getId()}"><br>-->
<!--姓名: <input type="text" id="name" name="name" th:value="*{user.getName()}"><br>-->
<!--性别: <input type="text" id="gender" name="gender" th:value="*{user.getGender()}"><br>-->
<!--年龄: <input type="number" id="age" name="age" th:value="*{user.getAge()}"><br>-->
<!--地址: <input type="text" id="address" name="address" th:value="*{user.getAddress()}"><br>-->
<!--QQ: <input type="text" id="qq" name="qq" th:value="*{user.getQq()}"><br>-->
<!--邮箱: <input type="text" id="email" name="email" th:value="*{user.getEmail()}"><br>-->
<!--<input type="submit">-->
<!--</form>-->
<fieldset style="width:180px; margin:0px auto">
<p>
<h2>学生信息更新</h2>
</p>
</fieldset>
<form class="form-horizontal" th:action="@{saveU}" method="post" style="width: 35%;margin:0px auto">
<div class="form-group">
<label for="id" class="col-sm-2 control-label">编号:</label>
<div class="col-sm-10">
<input type="number" class="form-control" th:field="*{user.id}" id="id" readonly="readonly">
</div>
</div>
<div class="form-group">
<label for="name" class="col-sm-2 control-label">姓名:</label>
<div class="col-sm-10">
<input type="text" class="form-control" th:field="*{user.name}" id="name" placeholder="请输入姓名">
</div>
</div>
<div class="form-group">
<label for="name" class="col-sm-2 control-label">姓别:</label>
<div class="col-sm-10">
<label class="radio-inline">
<input type="radio" name="gender" th:field="*{user.gender}" id="boy" value="男" checked>男
</label>
<label class="radio-inline">
<input type="radio" name="gender" th:field="*{user.gender}" id="gril" value="女">女
</label>
</div>
</div>
<div class="form-group">
<label for="age" class="col-sm-2 control-label">年龄:</label>
<div class="col-sm-10">
<input type="number" class="form-control" th:field="*{user.age}" id="age" placeholder="请输入年龄">
</div>
</div>
<div class="form-group">
<label for="address" class="col-sm-2 control-label">地址:</label>
<div class="col-sm-10">
<input type="text" class="form-control" th:field="*{user.address}" id="address" placeholder="请输入地址">
</div>
</div>
<div class="form-group">
<label for="qq" class="col-sm-2 control-label">QQ:</label>
<div class="col-sm-10">
<input type="text" class="form-control" th:field="*{user.qq}" id="qq" placeholder="请输入QQ">
</div>
</div>
<div class="form-group">
<label for="email" class="col-sm-2 control-label">邮箱:</label>
<div class="col-sm-10">
<input type="text" class="form-control input-sm" th:field="*{user.email}" id="email" placeholder="请输入邮箱">
</div>
</div>
<div class="form-group" style="text-align: center">
<a th:href="@{/saveU}">
<input class="btn btn-info" type="submit" value="提交">
</a>
<a href="update.html" th:href="@{/update}">
<input class="btn btn-info" type="submit" value="重置">
</a>
<a href="list.html" th:href="@{/list}">
<input class="btn btn-info" type="submit" value="返回">
</a>
</div>
</form>
</body>
</html>效果图
四 项目主页效果
五 源码
源码已上传GitHub，欢迎Star：https://github.com/Thinkingcao/SpringBootLearning/tree/master/springboot-mybatis-xml
