Json how to get value from key with special character - json-simple

Question

I cannot get a value from a key, because the key has a $ in it. Here is the jsonobject:

JSONParser parser = new JSONParser();
String str = "{\"$oid\":\"5168d0e0b280f084c3742800\"}";
JSONObject obj = (JSONObject)parser.parse(str);

String oid = (String) obj.get("$oid");
System.out.println("oid: " + oid);

However the output is:

oid: null

How can I deal with the key with a special character $ in it?

score 1 · Accepted Answer · answered Apr 21 '13 at 00:50

1

The string str is not being formed properly. You need to escape the quotes. Try this:

String str = "{\"$oid\":\"5168d0e0b280f084c3742800\"}";

answered Apr 21 '13 at 00:50

shiladitya

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I am sorry. Actually it works. It is my mistake to got the wrong json object. Thx – Li' Apr 21 '13 at 01:19

score 0 · Answer 2 · answered Apr 21 '13 at 01:07

This worked. But I did not use JSONParser.

    String str = "{\"$oid\":\"5168d0e0b280f084c3742800\"}";
    JSONObject obj;
    try 
    {
        obj = new JSONObject(str);
        String oid = (String) obj.get("$oid");
        System.out.println("oid: " + oid);
        Toast.makeText(this, oid, Toast.LENGTH_SHORT).show();

    } 
    catch (JSONException e) {
        e.printStackTrace();
    }

Json how to get value from key with special character - json-simple

2 Answers2