springboot+mybatis 连接mysql_2

文章参考https://blog.csdn.net/Winter_chen001/article/details/77249029
1.接着上篇文章，需要引入mybatis的依赖

<dependency>
            <groupId>org.mybatis.spring.boot</groupId>
            <artifactId>mybatis-spring-boot-starter</artifactId>
            <version>1.3.4</version>
        </dependency>

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2.修改配置文件
因为我在本地测试时发现，连接报错，所以对url做了修改jdbc:mysql://127.0.0.1:3306/mytest?useSSL=false

spring.datasource.url=jdbc:mysql://127.0.0.1:3306/mytest?useSSL=false
spring.datasource.username=root
spring.datasource.password=123456
spring.datasource.driver-class-name=com.mysql.jdbc.Driver

建表语句

CREATE DATABASE mytest;

USE mytest;

CREATE TABLE t_user(
  id BIGINT NOT NULL PRIMARY KEY AUTO_INCREMENT,
  name VARCHAR(255) NOT NULL ,
  password VARCHAR(255) NOT NULL ,
  phone VARCHAR(255) NOT NULL
) ENGINE=INNODB AUTO_INCREMENT=1000 DEFAULT CHARSET=utf8;

3.创建实体类，映射对象User

private Integer id;
    private String name;
    private String password;
    private String phone;
    ---省略get,set方法---

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4.创建User映射的操作UserMapper

package com.wy.news.mapper;

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

import com.wy.news.model.User;
@Mapper
public interface UserMapper {
    
    @Insert("INSERT INTO T_USER(NAME, PASSWORD, PHONE) VALUES(#{name}, #{password}, #{phone})")
    int insert(@Param("name") String name, @Param("password") String password, @Param("phone") String phone);
    
    @Select("SELECT * FROM T_USER WHERE PHONE = #{phone}")
    User findUserByPhone(@Param("phone") String phone);
}

5.创建controller

package com.wy.news.controller;

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

import com.wy.news.mapper.UserMapper;
import com.wy.news.model.User;

@RestController
public class UserController {
    
    @Autowired
    private UserMapper userMapper;
    
    @RequestMapping("/findUser")
    public User getUserNameByPhone() {
        userMapper.insert("winterchen", "123456", "12345678910");
        User u = userMapper.findUserByPhone("12345678910");
        return u;
    }
}

6.启动服务，访问http://localhost:8080/findUser

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