怎么创建项目就不说了，可以参考
打开本地的mysql数据库，创建表
CREATE TABLE `users` (
`id` int(11) NOT NULL AUTO_INCREMENT,
`name` varchar(255) DEFAULT NULL,
`age` int(11) DEFAULT NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;
在项目里面新建Users.java类
package com.gongspringmvcmybatis.pojo;
public class Users {
private Integer id;
private String name;
private Integer age;
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
}
创建 mapper 接口以及映射配置文件
接口
package com.gongspringmvcmybatis.mapper;
import com.gongspringmvcmybatis.pojo.Users;
public interface UsersMapper {
void insertUser(Users users);
}
映射文件
<?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.gongspringmvcmybatis.mapper.UsersMapper">
<insert id="insertUser" parameterType="users">
insert into users(name,age) values(#{name},#{age})
</insert>
</mapper>
创建业务层 
package com.gongspringmvcmybatis.service;
import com.gongspringmvcmybatis.pojo.Users;
public interface UsersService {
void addUser(Users users);
}
package com.gongspringmvcmybatis.service.impl;
import com.gongspringmvcmybatis.mapper.UsersMapper;
import com.gongspringmvcmybatis.pojo.Users;
import com.gongspringmvcmybatis.service.UsersService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
@Service
@Transactional
public class UsersServiceImpl implements UsersService {
@Autowired
private UsersMapper usersMapper;
@Override
public void addUser(Users users) {
this.usersMapper.insertUser(users);
}
}
创建 Controller
package com.gongspringmvcmybatis.controller;
import com.gongspringmvcmybatis.pojo.Users;
import com.gongspringmvcmybatis.service.UsersService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
@Controller
@RequestMapping("/users")
public class UsersController {
@Autowired
private UsersService usersService;
/**
* 页面跳转
*/@ResponseBody
@RequestMapping("/{page}")public String showPage(@PathVariable String page){
return page;
}
/**
* 添加用户
*/
@RequestMapping("/addUser")
public String addUser(Users users){
this.usersService.addUser(users);
return "ok";
}
}
新建input.html页面文件
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>添加用户</title>
</head>
<body>
<form th:action="@{/users/addUser}" method="post">
用户姓名：<input type="text" name="name"/><br/>
用户年龄：<input type="text" name="age"/><br/>
<input type="submit" value="确定"/><br/>
</form>
</body>
创建ok.html页面
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>操作提示页面</title>
</head>
<body>
操作成功！！！
</body>
</html>
创建启动类
package com.gongspringmvcmybatis;
import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
@MapperScan("com.gongspringmvcmybatis.mapper") //@MapperScan 用户扫描MyBatis的Mapper接口
public class App {
public static void main(String[] args) {
SpringApplication.run(App.class, args);
}
}
运行启动类
浏览器打印出这个结果，具体原因我也不清楚了
