Map<String, List<Map<String,Object>>>

装载解析  Map<String, List<Map<String,Object>>>

       // Map<String, List<Map<String,Object>>>
            //1、先装载 Map<String,Object>
            //2、再装载 List<Map<String,Object>>
            //3、最后装载 Map<String, List<Map<String,Object>>>

            List<Map<String,Object>> dataList1 = new ArrayList<Map<String,Object>>();

            Map<String, Object> map1 = new HashMap<String, Object>();
            map1.put("QUALITY_CODE","20200107");
            map1.put("AUTH_NAME","证书1");
            map1.put("EXPRESSIONDESC","4和3都满足");
            Map<String, Object> map2 = new HashMap<String, Object>();
            map2.put("QUALITY_CODE","20200107");
            map2.put("AUTH_NAME","证书2");
            map2.put("EXPRESSIONDESC","4证书满足");

            JSONObject jsonObject1 = new JSONObject(map1);
            JSONObject jsonObject2 = new JSONObject(map2);
            dataList1.add(jsonObject1);
            dataList1.add(jsonObject2);
            //装载到 List<Map<String,Object>>中
            System.out.println("dataList1:"+ dataList1);
            System.out.println("==========dataList1==========");

            List<Map<String,Object>> dataList2 = new ArrayList<Map<String,Object>>();

            Map<String, Object> map3 = new HashMap<String, Object>();
            map3.put("QUALITY_CODE","20200107");
            map3.put("AUTH_NAME","证书3");
            map3.put("EXPRESSIONDESC","4和3都满足");
            Map<String, Object> map4 = new HashMap<String, Object>();
            map4.put("QUALITY_CODE","20200107");
            map4.put("AUTH_NAME","证书4");
            map4.put("EXPRESSIONDESC","4证书满足");

            JSONObject jsonObject3 = new JSONObject(map3);
            JSONObject jsonObject4 = new JSONObject(map4);
            dataList2.add(jsonObject3);
            dataList2.add(jsonObject4);
            //装载到 List<Map<String,Object>>中
            System.out.println(dataList2);
            System.out.println("=========dataList2===========");

            // 装载到 Map<String, List<Map<String,Object>>>
            Map<String, List<Map<String, Object>>> stringListMap = new HashMap<>();
            stringListMap.put("key1", dataList1);
            stringListMap.put("key2", dataList2);
            System.out.println(stringListMap);
            System.out.println("stringListMap.keySet: "+stringListMap.keySet());
            System.out.println("=========keySet===========");
            for (String s : stringListMap.keySet()) {
                List<Map<String, Object>> listMap = stringListMap.get(s);
                System.out.println(listMap);
                System.out.println("=========listMap===========");
                for (Map<String, Object> map : listMap) {
                    Set<String> stringKey = map.keySet();
                    System.out.println(stringKey); // [AUTH_NAME, QUALITY_CODE, EXPRESSIONDESC]
                    System.out.println("=========stringKey===========");
                    for (String k : stringKey) {
                        Object value = map.get(k);
                        System.out.println(k+"的值:"+value+"
");
                    }
                }
            }
原文地址:https://www.cnblogs.com/liyh321/p/14949039.html