SpringBoot整合Mybatis

(1.)引入需要的pom文件节点

<dependency>
    <groupId>org.mybatis.spring.boot</groupId>
    <artifactId>mybatis-spring-boot-starter</artifactId>
    <version>2.0.1</version>
</dependency>

(1. )创建实体

package com.qzy.entity;

public class Grade {

    private Integer gradeId;
    private String gradeName;

    public Grade() {

    }

    public Grade(String gradeName) {
        this.gradeName = gradeName;
    }

    public Grade(Integer gradeId, String gradeName) {
        this.gradeId = gradeId;
        this.gradeName = gradeName;
    }

    public Integer getGradeId() {
        return gradeId;
    }

    public void setGradeId(Integer gradeId) {
        this.gradeId = gradeId;
    }

    public String getGradeName() {
        return gradeName;
    }

    public void setGradeName(String gradeName) {
        this.gradeName = gradeName;
    }
}

(3.)创建GradeDao接口

package com.qzy.dao;

import com.qzy.entity.Grade;
import org.springframework.stereotype.Repository;

import java.util.List;
@Repository
public interface IGradeDao {

    public int insertGrade(Grade grade);

    public int updateGrade(Grade grade);

    public int deleteGrade(Integer id);

    public List<Grade> findAll();
}

(4.)创建GradeDaoMapper接口放在配置文件resource的mapper目录下，后面会创建目录

<?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.qzy.dao.IGradeDao" >
  <insert id="insertGrade">
        insert  into  Grade(GradeName) values(#{gradeName})
  </insert>
</mapper>

(5.)创建GradeService接口

package com.qzy.service;
import com.qzy.entity.Grade;

import java.util.List;

public interface IGradeService {
    public int insertGrade(Grade grade);
    public int updateGrade(Grade grade);
    public int deleteGrade(Integer id);
    public List<Grade> findAll();
}

(6.)创建GradeServiceimpl

package com.qzy.service.impl;

import com.qzy.dao.IGradeDao;
import com.qzy.entity.Grade;
import com.qzy.service.IGradeService;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.List;

@Service("iGradeService")
public class IGradeServiceImpl implements IGradeService {
    @Resource
    private IGradeDao iGradeDao;


    @Override
    public int insertGrade(Grade grade) {
        return iGradeDao.insertGrade(grade);
    }

    @Override
    public int updateGrade(Grade grade) {
        return iGradeDao.updateGrade(grade);
    }

    @Override
    public int deleteGrade(Integer id) {
        return iGradeDao.deleteGrade(id);
    }

    @Override
    public List<Grade> findAll() {
        return iGradeDao.findAll();
    }
}

(7.)创建MybatisController

package com.qzy.controller;

import com.qzy.entity.Grade;
import com.qzy.service.IGradeService;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.util.List;

@RestController
public class MybatisController {
    @Resource
    private IGradeService iGradeService;

    @RequestMapping("/insertGrade")
    public int insertGrade(){
        return iGradeService.insertGrade(new Grade("S1"));
    }
    @RequestMapping("/updateGrade")
    public int updateGrade(){
        return  iGradeService.updateGrade(new Grade(10012,"S2"));
    }
    @RequestMapping("/deleteGrade")
    public int deleteGrade(){
        return iGradeService.deleteGrade(10012);
    }
    @RequestMapping("/findAll")
    public List<Grade> findAll(){
        return iGradeService.findAll();
    }
}

(8.)创建resource包下创application.yml文件

##数据源配置
spring:
  datasource:
    driver-class-name: com.mysql.jdbc.Driver
    url: jdbc:mysql:///myschool
    username: root
    password: 123
##myabtis配置
mybatis:
  type-aliases-package: com.qzy.entity
  mapper-locations: classpath:/mapper/*.xml
##开启日志
logging:
  level:
    com.boot.dao: debug

(9.)目录

 

(10.)启动类

package com.qzy;

import org.mybatis.spring.annotation.MapperScan;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@MapperScan("com.qzy.dao")
public class StartSpringBoot {
    public static void main(String[] args) {
        SpringApplication.run(StartSpringBoot.class,args);
    }
}

(11.)通过浏览器访问即可

 

注：父子工程