查询没有没有某种类型的班级的学生，可通过多声部过滤

mec-web/src/main/java/com/ym/mec/web/controller/StudentRegistrationController.java

@@ -136,8 +136,8 @@ public class StudentRegistrationController extends BaseController {
     @ApiImplicitParams({@ApiImplicitParam(name = "musicGroupId", value = "乐团编号", required = true, dataType = "String"),
             @ApiImplicitParam(name = "type", value = "类型(MIX，HIGH)", required = true, dataType = "ClassGroupTypeEnum"),
             @ApiImplicitParam(name = "actualSubjectId", value = "科目(声部)id,", required = false, dataType = "String")})
-    public HttpResponseResult getMusicGroupStuNoClassType(String musicGroupId, Long classGroupId, ClassGroupTypeEnum type, String actualSubjectIds) {
-        return succeed(studentRegistrationService.findMusicGroupStuNoClassType(musicGroupId, classGroupId, type, actualSubjectIds));
+    public HttpResponseResult getMusicGroupStuNoClassType(String musicGroupId, Long classGroupId, ClassGroupTypeEnum type, String actualSubjectId) {
+        return succeed(studentRegistrationService.findMusicGroupStuNoClassType(musicGroupId, classGroupId, type, actualSubjectId));
     }
 
     @ApiOperation(value = "获取学生报名缴费详情")