not found Mapper.xml文件错误

编写：

　　XXXMpper.java 接口:

package com.atguigu.eduservice.mapper;

import com.atguigu.eduservice.entity.EduCourse;
import com.atguigu.eduservice.entity.vo.CoursePublishVo;
import com.baomidou.mybatisplus.core.mapper.BaseMapper;

/**
 * <p>
 * 课程 Mapper 接口
 * </p>
 *
 * @author testjava
 * @since 2021-02-21
 */
public interface EduCourseMapper extends BaseMapper<EduCourse> {
    public CoursePublishVo getPublishCourseInfo(String courseId);
}

对应XXXMapper.xml文件： 

<?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.atguigu.eduservice.mapper.EduCourseMapper">
    <!--sql语句：根据课程id查询课程确认信息-->
    <select id="getPublishCourseInfo" resultType="com.atguigu.eduservice.entity.vo.CoursePublishVo">
        SELECT ec.id,ec.title,ec.price,ec.lesson_num AS lessonNum,ec.cover,
               et.name AS teacherName,
               es1.title AS subjectLevelOne,
               es2.title AS subjectLevelTwo
        FROM edu_course ec LEFT OUTER JOIN edu_course_description ecd ON ec.id=ecd.id
                           LEFT OUTER JOIN edu_teacher et ON ec.teacher_id=et.id
                           LEFT OUTER JOIN edu_subject es1 ON ec.subject_parent_id=es1.id
                           LEFT OUTER JOIN edu_subject es2 ON ec.subject_id=es2.id
        WHERE ec.id=#{courseId}
    </select>


</mapper>

XXXService.java 接口 ：

package com.atguigu.eduservice.service;

import com.atguigu.eduservice.entity.EduCourse;
import com.atguigu.eduservice.entity.vo.CourseInfoVo;
import com.atguigu.eduservice.entity.vo.CoursePublishVo;
import com.baomidou.mybatisplus.extension.service.IService;

/**
 * <p>
 * 课程 服务类
 * </p>
 *
 * @author testjava
 * @since 2021-02-21
 */
public interface EduCourseService extends IService<EduCourse> {

    //根据课程id查询课程确认信息
    CoursePublishVo publishCourseInfo(String id);
}

XXXServiceImpl.java :

package com.atguigu.eduservice.service.impl;

import com.atguigu.eduservice.entity.EduCourse;
import com.atguigu.eduservice.entity.EduCourseDescription;
import com.atguigu.eduservice.entity.vo.CourseInfoVo;
import com.atguigu.eduservice.entity.vo.CoursePublishVo;
import com.atguigu.eduservice.mapper.EduCourseMapper;
import com.atguigu.eduservice.service.EduCourseDescriptionService;
import com.atguigu.eduservice.service.EduCourseService;
import com.atguigu.servicebase.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;

/**
 * <p>
 * 课程 服务实现类
 * </p>
 *
 * @author testjava
 * @since 2021-02-21
 */
@Service
public class EduCourseServiceImpl extends ServiceImpl<EduCourseMapper, EduCourse> implements EduCourseService {
   //根据课程id查询课程确认信息
    @Override
    public CoursePublishVo publishCourseInfo(String id) {
        //调用mapper
        CoursePublishVo publishCourseInfo = baseMapper.getPublishCourseInfo(id);
        return publishCourseInfo;
    }
}

XXXController.java

 ....   
    //根据课程id查询课程确认信息
    @GetMapping("getPublishCourseInfo/{id}")
    public R getPublishCourseInfo(@PathVariable String id) {
        CoursePublishVo coursePublishVo = courseService.publishCourseInfo(id);

        return R.ok().data("publishCourse",coursePublishVo);
    }
....

标题问题解决：

pom.xml

....

<!-- 项目打包时会将java目录中的*.xml文件也进行打包 -->
    <build>
        <resources>
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
                <filtering>false</filtering>
            </resource>
        </resources>
    </build>

</project>

application.properties :

#配置mapper xml文件的路径
mybatis-plus.mapper-locations=classpath:com/atguigu/eduservice/mapper/xml/*.xml