Spring Boot七：Spring boot集成MyBatis

一.创建项目

项目名称为 “springboot_mybatis_demo”，创建过程中勾选 “Web”，“MyBatis”，“MySQL”，第一次创建Maven需要下载依赖包(耐心等待)

0?wx_fmt=jpeg

二.实现

2.1创建User类

package com.woniu.bean;


public class User {
	private long id;
	private String name;
	private int age;
	public long getId() {
		return id;
	}
	public void setId(long id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	@Override
	public String toString() {
		return "User [id=" + id + ", name=" + name + ", age=" + age + "]";
	}
	
	
}

2.2创建UserMapper接口

创建接口UserMapper，并添加@Mapper注解

package com.woniu.mapper;

import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import com.woniu.bean.User;

@Mapper
public interface UserMaper {
	
	@Select("select * from user where age = #{age}")
	User Select(int age);
}

2.3创建controller

package com.woniu.controller;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.woniu.bean.User;
import com.woniu.mapper.UserMaper;

@RestController
@RequestMapping("/web")
public class WebController {
	@Autowired
	private UserMaper mapper;
	
	
	@RequestMapping("/index")
	public User selectAge(int age){
		
		return mapper.Select(age);
	}
}

2.4设置application.properties

# mysql
spring.datasource.url=jdbc:mysql://localhost/spring_boot_demo?useUnicode=true&characterEncoding=utf-8
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver