Jsonobject is sorted in A-Z order of key

Recently, Tiktok has been connected api, Interface parameters need to be checked key Sort , Search the , I found that many articles adopt

JSONObject object2 = new JSONObject(true);

This way, , Most of them adopt this method , It seems that they quarrel with each other , No verification , This is the wrong way . This initializes , It initializes an ordered JSON, Not sorted JSON, To put it bluntly , Will follow you put Sequential storage of .

Everybody knows ,java in map Sets are unordered , The set type we need to adopt is SortedMap, Here is the validation ：

JSONObject object1 = new JSONObject();
JSONObject object2 = new JSONObject(true);
SortedMap map = new TreeMap();

object1.put("order",123);
object2.put("order",123);
map.put("order",123);

object1.put("name"," Zhang San ");
object2.put("name"," Li Si ");
map.put("name"," Wang Wu ");

object1.put("age",1);
object2.put("age",2);
map.put("age",2);

System.out.println(object1.toJSONString());
System.out.println(object2.toJSONString());
System.out.println(map.toString());

Here I define three objects ,object1 It's ordinary. json,object2 Is ordered json,map Is the sort of json, Let's look at the output ：

Obviously ,object1 Is chaotic ,object2 It is stored in the order of insertion , and map Is the real sorting .

There's another way , You can sort by yourself , Compare each key First of all ascll value , And then sort it , Then insert into an ordered json In the assembly , It can also be realized , Just more trouble .

You can check the information on the Internet , Be sure to verify it yourself