SpringBoot-Mybatis整合

1.主程序
package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**

• @Description:
• @author: YuanTong-ZXY
• @Date: 2019/2/19 15:15
  */
  @SpringBootApplication
  public class DemoApplication {
  public static void main(String[] args) {
  SpringApplication.run(DemoApplication.class,args);
  }
  }

2.controller层
package com.example.demo.controller;

import com.example.demo.service.UserServiceImpl;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;

/**

• @Description:

• @author: YuanTong-ZXY

• @Date: 2019/2/19 15:09
  */
  @RestController
  @RequestMapping("/testboot")
  public class TestBootController {
  @Resource
  private UserServiceImpl userService;

  @RequestMapping("getuser")
  public Integer getUser() {
  Integer userById = userService.getUserById();
  return userById;
  }
  }
  3、service层
  package com.example.demo.service;
  /**

• @Description:

• @author: YuanTong-ZXY

• @Date: 2019/2/19 15:59
  /
  import com.example.demo.mapper.UserDao;
  import org.springframework.stereotype.Service;
  import javax.annotation.Resource;
  @Service("userService")
  public class UserServiceImpl{
  @Resource
  private UserDao userDao;
  public Integer getUserById() {
  return userDao.selectCount();
  }
  }
  4.mapper
  package com.example.demo.mapper;
  /*

• @Description:

• @author: YuanTong-ZXY

• @Date: 2019/2/19 15:54
  /
  import org.apache.ibatis.annotations.Mapper;
  @Mapper
  public interface UserDao {
  Integer selectCount();
  }
  5.mapper.xml
  
  
  
  
  select count() from wx_user
  
  

6.application.yml
spring:
profiles:
active: dev
datasource:
url: jdbc:mysql://localhost:3306/saasboard
username: root
password: root
driver-class-name: com.mysql.jdbc.Driver
type: com.alibaba.druid.pool.DruidDataSource
7.pom.xml 文件

xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
4.0.0

org.springframework.boot
spring-boot-starter-parent
2.1.3.RELEASE


com.example
demo
0.0.1-SNAPSHOT
demo
Demo project for Spring Boot

1.8




org.springframework.boot
spring-boot-starter-web


org.mybatis.spring.boot
mybatis-spring-boot-starter
2.0.0

    
        org.springframework.boot
        spring-boot-starter-test
        test
    
    
    
        mysql
        mysql-connector-java
        5.1.47
    
    
        com.alibaba
        druid
        1.0.18
    


    
        
            org.springframework.boot
            spring-boot-maven-plugin