diff --git a/servers/boe-server-all/src/main/java/com/xboe/module/course/api/CoursePortalApi.java b/servers/boe-server-all/src/main/java/com/xboe/module/course/api/CoursePortalApi.java
index b59faab5..b9f12ae3 100644
--- a/servers/boe-server-all/src/main/java/com/xboe/module/course/api/CoursePortalApi.java
+++ b/servers/boe-server-all/src/main/java/com/xboe/module/course/api/CoursePortalApi.java
@@ -1,65 +1,50 @@
 package com.xboe.module.course.api;
 
-import java.io.File;
-import java.io.FileInputStream;
-import java.io.FileOutputStream;
-import java.io.IOException;
-import java.net.URLEncoder;
-import java.nio.file.Files;
-import java.nio.file.Path;
-import java.nio.file.Paths;
-import java.nio.file.StandardCopyOption;
-import java.util.*;
-import java.util.concurrent.TimeUnit;
-import java.util.stream.Collectors;
-import java.util.zip.ZipEntry;
-import java.util.zip.ZipOutputStream;
-
-import javax.annotation.Resource;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
 import com.xboe.api.ThirdApi;
 import com.xboe.api.vo.UserBasicInfo;
-import com.xboe.core.orm.FieldFilters;
-import com.xboe.module.course.entity.*;
-import com.xboe.module.course.vo.TeacherVo;
-import com.xboe.school.study.dao.StudyCourseDao;
-import com.xboe.school.study.entity.StudyHomeWork;
-import com.xboe.school.study.service.IStudyHomeWorkService;
-import com.xboe.school.study.service.IStudyService;
-import com.xboe.system.user.entity.User;
-import org.apache.commons.lang3.StringUtils;
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.data.redis.core.StringRedisTemplate;
-import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestMethod;
-import org.springframework.web.bind.annotation.RestController;
-
 import com.xboe.common.PageList;
 import com.xboe.common.Pagination;
 import com.xboe.common.utils.StringUtil;
 import com.xboe.core.JsonResponse;
 import com.xboe.core.api.ApiBaseController;
+import com.xboe.core.orm.FieldFilters;
 import com.xboe.module.course.dto.CourseQueryDto;
 import com.xboe.module.course.dto.CourseTeacherDto;
 import com.xboe.module.course.dto.RankingDto;
+import com.xboe.module.course.entity.*;
 import com.xboe.module.course.service.ICourseContentService;
 import com.xboe.module.course.service.ICourseSectionService;
 import com.xboe.module.course.service.ICourseService;
 import com.xboe.module.course.service.ICourseTeacherService;
 import com.xboe.module.course.vo.CourseStudyVo;
+import com.xboe.module.course.vo.TeacherVo;
 import com.xboe.module.teacher.entity.Teacher;
 import com.xboe.module.teacher.service.ITeacherService;
 import com.xboe.module.usergroup.service.IUserGroupService;
+import com.xboe.school.study.dao.StudyCourseDao;
 import com.xboe.school.study.entity.StudyCourse;
 import com.xboe.school.study.entity.StudyCourseItem;
+import com.xboe.school.study.entity.StudyHomeWork;
 import com.xboe.school.study.service.IStudyCourseService;
-
+import com.xboe.school.study.service.IStudyHomeWorkService;
+import com.xboe.school.study.service.IStudyService;
 import lombok.extern.slf4j.Slf4j;
+import org.apache.commons.lang3.StringUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.StringRedisTemplate;
+import org.springframework.web.bind.annotation.*;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+import java.io.File;
+import java.io.FileInputStream;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.*;
+import java.util.concurrent.TimeUnit;
+import java.util.stream.Collectors;
+import java.util.zip.ZipEntry;
+import java.util.zip.ZipOutputStream;
 
 
 /**