List Map的分组

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需求：根据用户id，把小区合并eg{"EuserId":3953,"PropertyId":"100,103"}

List<Map<String,String>> list = administratorService.dooradministratorselect(map);
         
         Map<String, Map<String,String>> resultMapf= new HashMap<String, Map<String,String>>(); //resultMapf是关键
         Map<String, String> ffmap= new HashMap<String, String>(); //分map
         Map<String, String> dataItem;String  propertyids="";
         List<Map<String,String>> dataList=list; List<Map<String,String>> resutsList = new ArrayList<Map<String, String>>();
         for(int i=0;i<dataList.size();i++){
             dataItem = dataList.get(i);
             if(resultMapf.containsKey(String.valueOf(dataItem.get("EuserId")))){
                 propertyids+=","+String.valueOf(dataItem.get("PropertyId"));
                 ffmap.put("propertyids", propertyids);
                 resultMapf.put(String.valueOf(dataItem.get("EuserId")),ffmap);
             }else{
                 propertyids="";ffmap= new HashMap<String, String>(); //初始化
                 propertyids=String.valueOf(dataItem.get("PropertyId"));
                 ffmap.put("propertyids", propertyids);
                 ffmap.put("AdministratorId", String.valueOf(dataItem.get("AdministratorId")));
                 ffmap.put("AdministratorType", String.valueOf(dataItem.get("AdministratorType")));
                 ffmap.put("EuserId", String.valueOf(dataItem.get("EuserId")));
                 ffmap.put("AddTime", String.valueOf(dataItem.get("AddTime")));
                 ffmap.put("euserProperty", String.valueOf(dataItem.get("euserProperty")));
                 ffmap.put("deptNamep", String.valueOf(dataItem.get("deptNamep")));
                 ffmap.put("countyName", String.valueOf(dataItem.get("countyName")));
                 ffmap.put("cityName", String.valueOf(dataItem.get("cityName")));
                 ffmap.put("CreateUserID", String.valueOf(dataItem.get("CreateUserID")));
                 ffmap.put("UserName", String.valueOf(dataItem.get("UserName")));
                 resultMapf.put(String.valueOf(dataItem.get("EuserId")),ffmap);
             }
         }
         Iterator<Map.Entry<String,Map<String,String>>> iterator = resultMapf.entrySet().iterator();
         while (iterator.hasNext()) {
            Map<String, String> listAndMap = new HashMap<String, String>();
             // 获取到每一个实体
             Map.Entry<String, Map<String,String>> entity = iterator.next();
             listAndMap=entity.getValue();
             resutsList.add( listAndMap);
         }