学生检索业务功能改造传参方式，加入对外api

snowy-plugin/snowy-plugin-disk/snowy-plugin-disk-func/src/main/java/vip/xiaonuo/disk/service/impl/CourseStudentRelateServiceImpl.java

@@ -272,6 +272,9 @@ public class CourseStudentRelateServiceImpl extends ServiceImpl<CourseStudentRel
     @Override
     public Page<Map<String,Object>> downList(Map<String,Object> param)
     {
+        if(param.get("collegeId") != null && StringUtils.isNotEmpty(param.get("collegeId").toString())){
+            param.put("collegeId", param.get("collegeId").toString());
+        }
         String courseId="";
         if(param.get("courseId") != null && StringUtils.isNotEmpty(param.get("courseId").toString())){
             courseId=param.get("courseId").toString();