spring boot之整合MyBatis08

通过快速创建spring boot 项目选中 MySQL,jdbc,mybatis选项

mybaits依赖

	<dependency>
			<groupId>org.mybatis.spring.boot</groupId>
			<artifactId>mybatis-spring-boot-starter</artifactId>
			<version>1.3.1</version>
		</dependency>

步骤：

1）、配置数据源相关属性（见上一节Druid）

2）、给数据库建表

3）、创建JavaBean实体类

package com.atguigu.domian;

import java.io.Serializable;

public class User implements Serializable {
    private Integer id;
    private String username;
    private String password;
    private String name;

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

    public Integer getId() {
        return id;
    }

    public void setId(Integer 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;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }
}

创建dao接口(注解版)

package com.atguigu.dao;

import com.atguigu.domian.User;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;

import java.util.List;
@Mapper
public interface UserDao {
    @Select("select * from user")
    public List<User> findAll();
    @Select("select * from user where id=#{id}")
    public  User findById(Integer id);
}

创建控制器类来进行操作返回响应到页面上

package com.atguigu.controller;

import com.atguigu.dao.UserDao;
import com.atguigu.domian.User;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;

@RestController
public class MybatisController {
    @Autowired
    UserDao userDao;
    @GetMapping("qu")
    public List<User> findAll(){
        return userDao.findAll();
    }
    @GetMapping("/id")
    public User findAllById(Integer id){
        return userDao.findById(1);
    }
}

通过get请求将数据库的数据查询返回到页面上