Unable to compile class for JSP: An error occurred at line: 34 in the jsp file: /homepage/course/course_summary.jsp The method checkUserPerm(long, long) is undefined for the type Lesson 31: throw new JspException("您没有访问权限!"); 32: } 33: }else{ 34: if(!lesson.checkUserPerm(um.getID(), Lesson.LESSON_STUD_PERM_COURSESUM_READ)){ 35: throw new JspException("您没有访问权限!"); 36: } 37: Stacktrace:!