将字符串转换为JSONObject并返回字符串，而不会丢失UTF-8编码

Question

I've got the following result in String

{
   "html_attributions" : [],
   "result" : {
      "opening_hours" : {
         "open_now" : true,
         "weekday_text" : [
            "Monday: 8:00 AM – 7:00 PM",
            "Tuesday: 8:00 AM – 7:00 PM",
            "Wednesday: 8:00 AM – 2:30 PM",
            "Thursday: 8:00 AM – 7:00 PM",
            "Friday: 8:00 AM – 7:30 PM",
            "Saturday: 8:00 AM – 6:00 PM",
            "Sunday: Closed"
         ]
      }
   },
   "status" : "OK"
}

which I convert to a JSONObject using

JSONObject resultJSON = new JSONObject(result);

I want to get the value of inner weekday_text key but it seems that the final output is not in UTF-8 ( \– unicode characters appear instead):

System.out.println(resultJSON.getJSONObject("result").getJSONObject("opening_hours").getJSONArray("weekday_text").toString());

["Monday: 8:00 AM \u2013 7:00 PM","Tuesday: 8:00 AM \u2013 7:00 PM","Wednesday: 8:00 AM \u2013 2:30 PM","Thursday: 8:00 AM \u2013 7:00 PM","Friday: 8:00 AM \u2013 7:30 PM","Saturday: 8:00 AM \u2013 6:00 PM","Sunday: Closed"]

What am I missing here?

Answer 1

You are seeing unicode escape sequences because of how toString is implemented. It is implemented this way probably to make it clear which characters are in the string, which makes it easier to debug your code, because sometimes different code points can look very similar.

The actual strings are still unescaped. Printing individual strings in the array will not show escape sequences:

System.out.println(resultJSON.getJSONObject("result").getJSONObject("opening_hours").getJSONArray("weekday_text").getString(0));

Answer 2

You can use a OutputStreamWriter to manage the output encoding.

JSONObject resultJSON = new JSONObject(result);    
ByteArrayOutputStream out = new ByteArrayOutputStream();
OutputStreamWriter writer = new OutputStreamWriter(out, "utf-8");
resultJSON.write(writer);
writer.flush();

String jSONStringUTF8 = new String(out.toByteArray(),"utf-8");
JSONObject newJSON = new JSONObject(jSONStringUTF8);
String value = newJSON.getString("content");