fix

mec-biz/src/main/resources/config/mybatis/CourseScheduleStudentPaymentMapper.xml

@@ -1122,6 +1122,6 @@
 	</select>
 
 	<select id="getByUserIdAndCourseId" resultMap="CourseScheduleStudentPayment">
-        SELECT * FROM `course_schedule_student_payment` WHERE `user_id_` = #{userId} AND `course_schedule_id_` = #{courseScheduleId}
+        SELECT * FROM `course_schedule_student_payment` WHERE `user_id_` = #{userId} AND `course_schedule_id_` = #{courseScheduleId} limit 1
     </select>
 </mapper>

mec-biz/src/main/resources/config/mybatis/CourseShareMapper.xml

@@ -197,6 +197,6 @@
     <select id="getByUserIdAndCourseId" resultMap="courseShare">
         SELECT *
         FROM course_share
-        WHERE user_id_ = #{studentId} AND course_id_ = #{courseScheduleId}
+        WHERE user_id_ = #{studentId} AND course_id_ = #{courseScheduleId} limit 1
     </select>
 </mapper>