将Map转换为JSON无法正确解析列表

Question

I am having an issue with creating a new JSON object given a Map<String, Object> . For example:

Map<String, Object> data = new Map<String, Object>();
data.put( "myList", new ArrayList<String>( Arrays.asList("item1", "item2")))
JSONObject json = new JSONObject(data);

What I am getting with json.toString() is

"{
  "myList": "[item1, item2]"
 }"

when I should be getting

"{
  "myList": ["item1", "item2"]
 }"

Notice the quotes around vs. in the array? Any ideas on how this can be fixed?

Answer 1

It depends on your JSON implementation - using wslite, the following code

Map<String, Object> data = new HashMap<String, Object>();
data.put("myList", new ArrayList<String>(Arrays.asList("item1", "item2")));
JSONObject json = new JSONObject(data);

System.out.println(json);

leads to

{"myList":["item1","item2"]}

at my machine.