解决ajax传过来的值后台接收不到的问题_AJAX相关_

 function confirmCourseSystem(){ var findAllTrainProgramNameId = $("#findAllTrainProgramNameId").val(); if(findAllTrainProgramNameId==null || findAllTrainProgramNameId==""){ window.alertx("请选择培训方案！"); return false; } var courseSystemId = $('#CourseSystemList').val(); alertx(courseSystemId); $.ajax({ type: "POST", url: "${ctx}/teach/teachDistribute/getCourseSystemNameById", data: { "CourseSystemId": $('#CourseSystemList').val() }, success:function(CourseSystemListName){ $('#CourseSystemBody').html(""); for(var i=0; i"+CourseSystemListName[i] +"课程体系无"); } }, error:function(){ alertx("error"); } }); } 

 //添加下发-确认选择，根据CourseSystemId获得CourseSystemName @ResponseBody @RequestMapping(value = "getCourseSystemNameById") public List getCourseSystemNameById(@RequestParam(required = false) String CourseSystemId, HttpServletRequest request){ logger.debug("==Evan==CourseSystemId: "+ CourseSystemId); logger.debug("==Evan==CourseSystemId2 :"+request.getParameter("CourseSystemId")); List CourseSystemListName = new ArrayList<>(); if(CourseSystemId==null || CourseSystemId.equals("")){ CourseSystemListName = null; }else { String[] CourseSystemListId = CourseSystemId.split(","); for (String aCourseSystemListId : CourseSystemListId) { CourseSystemListName.add(resourceCoursesystemService.get(aCourseSystemListId).getCoursesystemName()); } } return CourseSystemListName; } 

 $.ajax({ type: "POST", url: "${ctx}/teach/teachDistribute/getCourseSystemNameById", data: { "CourseSystemId": $('#CourseSystemList').val().toString() }, success:function(CourseSystemListName){ $('#CourseSystemBody').html(""); for(var i=0; i"+CourseSystemListName[i] +"课程体系无"); } }, error:function(){ alertx("error"); } });