解决Map序列化成JSON字符串传给前端后属性乱序问题

map序列化成json对象传递给前端时，map中属性的顺序会按首字母重新排序

json对象中的属性没有顺序而言，一次序列化、反序列化就会乱。

试过把map转成了JSON字符串，传给前端，还是不行

JSON.parseObject(JSON.toJSONString(contractsFactorMap),new TypeReference<TreeMap<String, String>>(){} , Feature.OrderedField)

想到数组可以保证顺序，可以把后端的map转成List数组，这样序列化成json不会影响顺序。

@Service
public class ComponentsContants {

 /** 
  * @description: Map转成List数组 (Map只有一层的情况)
  * @param:  
  * @return:  
  * @author ywx9031
  * @date: 2023/10/7 16:59
  */ 
 public static List<Map<String, Object>> MaptoList(Map map) {
  List<Map<String, Object>> valueList = new ArrayList<Map<String, Object>>();
  Iterator<String> iter = map.keySet().iterator();
  while (iter.hasNext()) {
   String key = iter.next();
   String value = (String) map.get(key);
   Map<String, Object> mapList = new HashMap<String, Object>();
   mapList.put("key", key);
   mapList.put("value", value);
   valueList.add(mapList);
  }
  return valueList;
 }
 /** 
  * @description: Map有2层的情况(Map中还包含map)
  * @param:  
  * @return:  
  * @author ywx9031
  * @date: 2023/11/13 15:45
  */ 
 public static List<Map<String, Object>> MaptoList2(Map map) {
  List<Map<String, Object>> valueList = new ArrayList<Map<String, Object>>();
  List<Map<String, Object>> valueList1 = new ArrayList<Map<String, Object>>();
  Iterator<String> iter = map.keySet().iterator();
  while (iter.hasNext()) {
   String key = iter.next();
   Map<String, Object> mapList = new HashMap<String, Object>();
   mapList.put("key", key);
   Map map1 = (Map) map.get(key);
   Iterator<String> iter1 = map1.keySet().iterator();
   while (iter1.hasNext()) {
    String key1 = iter1.next();
    Map<String, Object> mapList1 = new HashMap<String, Object>();
    mapList1.put("key", key1);
    mapList1.put("value", map1.get(key1));
    valueList1.add(mapList1);
   }
   mapList.put("value", valueList1);
   valueList.add(mapList);
  }
  return valueList;
 }
}