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>(){} , 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。

@Servicepublic 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> MaptoList(Map map) {List<Map> valueList = new ArrayList<Map>();Iterator iter = map.keySet().iterator();while (iter.hasNext()) { String key = iter.next(); String value = (String) map.get(key); Map mapList = new HashMap(); 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> MaptoList2(Map map) {List<Map> valueList = new ArrayList<Map>();List<Map> valueList1 = new ArrayList<Map>();Iterator iter = map.keySet().iterator();while (iter.hasNext()) { String key = iter.next(); Map mapList = new HashMap(); mapList.put("key", key); Map map1 = (Map) map.get(key); Iterator iter1 = map1.keySet().iterator(); while (iter1.hasNext()) {String key1 = iter1.next();Map mapList1 = new HashMap();mapList1.put("key", key1);mapList1.put("value", map1.get(key1));valueList1.add(mapList1); } mapList.put("value", valueList1); valueList.add(mapList);}return valueList; }}