jsp
<!--当前培训机构下的所有班级名称 --> 班级名称:<s:select onchange="checkClassStaging();" id="classId" theme="simple" list="classList" listKey="gid" listValue="name" name="classEntity.gid" ></s:select> <!--当前培训机构下的所有班级下的分期 --> 分期:<s:select id="stagingId" theme="simple" list="stagingList" listKey="gid" listValue="stagingCount" name="classEntity.classStagings.gid"></s:select>
action
/*查询所有的消息*/ public String fetchAll(){ if(entity != null && entity.getGid()!=null){ entity = null; } //分页查询 totalRecordCount = service.fetchTotalCount(entity); computeTotalPage(); entityList = service.fetchList(entity,computeStartIndex(),PAGE_RESULTS_SIZE); classList = service.fetchClass(this.getCurrentUser());//当前登录用户下的所有培训机构 stagingList = service.fetchStaging(classList); return RESULT_LIST; }
serviceImpl
/*查询当前培训用户下所有的班级 */ @Override public List<ClassEntity> fetchClass(SecUserEntity user) { List<ClassEntity> classList = new ArrayList<ClassEntity>(); SecUserEntity userEntity = fetchSingle(user); classList = userEntity.getClassEntityTrains(); return classList; } /*查询第一条数据班级下面的所有分期*/ public List<ClassStagingEntity> fetchStaging(List<ClassEntity> classList) { List<ClassStagingEntity> stagingList = new ArrayList<ClassStagingEntity>(); ClassEntity classEntities = classList.get(0); ClassEntity classEntity = fetchSingle(classEntities); stagingList = classEntity.getClassStagings(); return stagingList; }
action
/*级联下拉列表,通过从页面传过来的班级查找班级下面所有的分期*/ public String cascadeClassStaging(){ try{ if(jsonParam!=null){ ClassEntity classEntity = JSON.parseObject(jsonParam,ClassEntity.class); DwrResultVO result = service.fetchClassStaging(classEntity); jsonResult =JSONObject.toJSONString(result); System.out.println(jsonResult); } }catch(Exception e){ e.printStackTrace(); } return "flag"; }
serviceImpl
public DwrResultVO fetchClassStaging(ClassEntity classEntity){ DwrResultVO result = new DwrResultVO(); List<ClassStagingEntity> classStagingEntities = new ArrayList<ClassStagingEntity>(); ClassEntity entity = fetchSingle(classEntity); classStagingEntities = entity.getClassStagings();//获得班级下所有的分期 if(classStagingEntities!=null){ result.setOperationFlag(true); result.setClassStagingEntities(classStagingEntities); }else{ result.setOperationFlag(false); result.setOperationMessage("当前班级还未分过期!!"); } return result; }
jsp拼接(拼接option)
/*级联菜单 通过当前班级查询班级下所有的期数 */ function checkClassStaging(){ var classId = $("#classId").val(); var entity = new Object(); entity.gid = classId; if(classId!=""){ $("#stagingId").empty();//拼接之前先删除原有的下拉列表里的值 $.ajax({ async:false,url: "<%=APP_ACCESS_NAME%>/training/studentMessageAction!cascadeClassStaging.action",type: "POST",dataType: "json",data: "jsonParam="+JSON.stringify(entity),success: function( data ) { var result = JSON.parse(data); if(result.operationFlag==false){ alert(result.operationMessage); }else if(result.operationFlag==true){ var option=''; for (var i = 0; i < result.classStagingEntities.length; i++) {//动态添加 option +='<option value="'+result.classStagingEntities[i].gid+'">'+result.classStagingEntities[i].stagingCount+'</option>'; } $("#stagingId").append($(option)); } } }); } }
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