How do I make JSONObject toString escape unicode characters?

Question

Similar to this, I need the string equivalent of a net.sf.json.JSON object expressed entirely in ASCII characters.

new JSONObject().put("JSON", "帮").toString();

to return

{"JSON":"\u5E2E"}

not

{"JSON":"帮"}

Answer 1

Are you looking for a JSONObject based solution or normal java solution?

I am not sure is JsonObject have any such functionality. But a vaniall java based approach would be

public static void main(String[] args){
    String s = "帮";
    String s1 = "";
    for (int i = 0; i < s.length(); i++)
        s1 = s1+"\\u" + Integer.toHexString(s.charAt(i) | 0x10000).substring(1);

    System.out.println(s1);
}