创建项目

进行多功能模块的建立项目
建立一个spring-boot-mybatis

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• 不需要进行勾选

  
  
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• finish即可

  
  
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• 按照如图创建package
  entity的course类：

public class Course {

        private Long courseId;
        private String courseName;
        private Long userId;
        private String courseClass;
        private String cover;
        private String courseCode;
        private Short finished;
        private  String username;
        private String avatar;
    }

CourseMapper类:

public interface CourseMapper {
    @Results({
            @Result(column = "course_id", property = "courseId"),
            @Result(column = "course_name", property = "courseName"),
            @Result(column = "user_id", property = "userId"),
            @Result(column = "course_class", property = "courseClass"),
            @Result(column = "cover", property = "cover"),
            @Result(column = "course_code", property = "courseCode"),
            @Result(column = "finished", property = "finished")
    })
    @Select("SELECT * FROM t_course ")
    List<Course> selectAll();
    @Results({
            @Result(column = "course_id", property = "courseId"),
            @Result(column = "course_name", property = "courseName"),
            @Result(column = "user_id", property = "userId"),
            @Result(column = "course_class", property = "courseClass"),
            @Result(column = "cover", property = "cover"),
            @Result(column = "course_code", property = "courseCode"),
            @Result(column = "finished", property = "finished")
    })
    @Select("SELECT * FROM t_course WHERE course_id = #{courseId} ")
    Course getOne(Long courseId);

    @Results({
            @Result(property = "courseId", column = "course_id"),
            @Result(property = "courseName", column = "course_name"),
            @Result(property = "userId", column = "user_id"),
            @Result(property = "courseClass", column = "course_class"),
            @Result(property = "cover", column = "cover"),
            @Result(property = "courseCode", column = "course_code"),
            @Result(property = "finished", column = "finished")
    })
    @Select("SELECT * FROM t_course WHERE finished=#{finished} ")
    List<Course> selectDoing(short finished);
    @Results({
            @Result(property = "courseId", column = "course_id"),
            @Result(property = "courseName", column = "course_name"),
            @Result(property = "userId", column = "user_id"),
            @Result(property = "courseClass", column = "course_class"),
            @Result(property = "cover", column = "cover"),
            @Result(property = "courseCode", column = "course_code"),
            @Result(property = "finished", column = "finished")
    })
    @Select("SELECT * FROM t_course WHERE finished=#{finished}")
    List<Course> selectFined(short finished);

    @Delete("DELETE FROM t_course WHERE course_id =#{courseId}")
    void delete(Long courseId);
    @Insert("INSERT INTO t_course(course_name,user_id,course_class,cover,course_code,finished) VALUES(#{courseName},#{userId},#{courseClass},#{cover},#{courseCode},#{finished}) ")
    void insert(Course course);
   @Update("UPDATE t_course SET cover=#{cover},finished=#{finished} WHERE course_id=#{courseId}")
    void update(Course course);
}

CourseService类

public interface CourseService {
    List<Course> selectAll();
    Course getOne(long courseId);
    void delete(long courseId);
    void insert(Course course);
    void update(Course course);
    List<Course> selectDoing(short finished);
    List<Course> selectFined(short finished);
}

RandomUtil类

/*
* 随机数工具类
* */
public class RandomUtil {
    public static String getRandomCode(){
        StringBuffer stringBuffer=new StringBuffer();
        Random random =new Random();
        for(int i =0;i<6;i++){
//            生成【0，bound】的随机整数
            int num=random.nextInt(10);
            stringBuffer.append(num);
        }
        return stringBuffer.toString();
    }
}

SpringBootMybatisApplication类

@SpringBootApplication
@MapperScan("com.springboot.mybatis.mapper")
@EnableSwagger2Doc
public class SpringBootMybatisApplication {
    public static void main(String[] args) {
        SpringApplication.run(SpringBootMybatisApplication.class, args);
    }
}

CourseServiceImplTest类

@Service
public class CourseServiceImpl implements CourseService {
    @Resource
    private CourseMapper courseMapper;
    @Override
    public List<Course> selectAll() {
        return courseMapper.selectAll();
    }
    @Override
    public Course getOne(long courseId) {
        return courseMapper.getOne(courseId);
    }
    @Override
    public void delete(long courseId) {
        courseMapper.delete(courseId);
    }
    @Override
    public void insert(Course course) {
        courseMapper.insert(course);
    }
    @Override
    public void update(Course course) {
        courseMapper.update(course);
    }
    @Override
    public List<Course> selectDoing(short finished) {
        return courseMapper.selectDoing(finished);
    }
    @Override
    public List<Course> selectFined(short finished) {
        return courseMapper.selectFined(finished);
    }
}

CourseController类

@RestController
@RequestMapping(value = "/api")
@CrossOrigin("http://localhost:80")
public class CourseController {
    @Resource
    private CourseService courseService;

    @RequestMapping(value = "/courses", method = RequestMethod.GET)
    public List<Course> selectAll() {
        return courseService.selectAll();
    }
    @RequestMapping(value = "/course/{id}", method = RequestMethod.GET)
    public Course getOne(@PathVariable("id") long id) {
        return courseService.getOne(id);
    }
    @RequestMapping(value = "/course/{id}", method = RequestMethod.DELETE)
    public void deleteCourse(@PathVariable("id") long id) {
        courseService.delete(id);
    }
    @RequestMapping(value = "/course", method = RequestMethod.POST)
    public void addCourse(@RequestBody Course course) {
        course.setCourseCode(RandomUtil.getRandomCode());
        courseService.insert(course);
    }
    @RequestMapping(value = "/course", method = RequestMethod.PUT)
    public void updateCourse(@RequestBody Course course) {
        courseService.update(course);
    }

    @RequestMapping(value = "/doing/{id}", method = RequestMethod.GET)
    public List<Course> selectDoing(@PathVariable("id") short id) {
        return courseService.selectDoing(id);
    }

    @RequestMapping(value = "/finish/{id}", method = RequestMethod.GET)
    public List<Course> selectFined(@PathVariable("id") short id) {
        return courseService.selectFined(id);
    }
}

在postman的运行结果显示200即成功·~