diff --git a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudySignupServiceImpl.java b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudySignupServiceImpl.java
index 38852b1e..e111cd20 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudySignupServiceImpl.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/school/study/service/impl/StudySignupServiceImpl.java
@@ -4,10 +4,12 @@ import java.io.IOException;
 import java.time.LocalDateTime;
 import java.time.ZoneOffset;
 import java.util.List;
+import java.util.Optional;
 
 import javax.transaction.Transactional;
 
 import com.xboe.module.course.dao.CourseContentDao;
+import com.xboe.module.course.dto.CourseContentDto;
 import com.xboe.module.course.entity.CourseContent;
 import com.xboe.school.study.dao.StudyCourseItemDao;
 import com.xboe.school.study.entity.StudyCourseItem;
@@ -80,7 +82,7 @@ public class StudySignupServiceImpl implements IStudySignupService{
 		//添加到课程学习
 		LocalDateTime now=LocalDateTime.now();
 		String sql="SELECT * from boe_course_content " +
-				"where course_id = '"+signup.getCourseId()+"'";
+				"where course_id = '?1'";
 		StudyCourse sc=new StudyCourse();
 		sc.setAddTime(now);
 		sc.setAid(signup.getAid());
@@ -97,7 +99,7 @@ public class StudySignupServiceImpl implements IStudySignupService{
 		sc.setStatusTime(now);
 		sc.setLastTime(sc.getAddTime());
 		sc.setTotalDuration(0);
-		List<CourseContent> courseContents = contentDao.findListByHql(sql);
+		List<CourseContent> courseContents = contentDao.sqlFindList("SELECT * from boe_course_content where course_id = "+ signup.getCourseId());
 		if (!courseContents.isEmpty()) {
 			log.info("查看在线课集合内容数据（共 {} 条记录）", courseContents.size());
 			for (CourseContent c : courseContents) {