How to get raw JSON text from Unirest response in Java

Question

I'm trying to send a POST request to a server, get the response, and parse it (it is a JSON file).

I am using Unirest for my POST request, simply as below:

        HttpResponse<JsonNode> response = Unirest
                .post("http://myserver.com/file")
                  .header("cache-control", "no-cache")
                  .header("Postman-Token", "02ec2fa1-afdf-4a2a-a535-353424d99400")
                .header("Content-Type", "application/json")
                .body("{some JSON body}")
                .asJson();

        // retrieve the parsed JSONObject from the response
        JSONObject myObj = response.getBody().getObject();
        // extract fields from the object
        String msg = myObj.toString();

        System.out.println(msg);

But I have problems getting the raw JSON text (I want to use JSONPath to parse the response).

How can I do that? All my attempts calling toString() methods failed so far.

score 5 · Accepted Answer · answered Dec 12 '18 at 22:32

The Unirest API supports this out of the box - Use asString() instead of asJson() to get the response as HttpResponse<String>.

HttpResponse<String> response = Unirest
                .post("http://myserver.com/file")
                  .header("cache-control", "no-cache")
                  .header("Postman-Token", "02ec2fa1-afdf-4a2a-a535-353424d99400")
                .header("Content-Type", "application/json")
                .body("{some JSON body}")
                .asString();
System.out.println(response.getBody());

Interesting. Apparently my eclipse was not outputing this! In a shell I see the response! — Tina J, Dec 12 '18 at 22:39

frederikdebacker · Answer 2 · 2018-12-12T22:09:44.083

3

You can do it like this:

InputStream inputStream = response.getRawBody();
BufferedInputStream bis = new BufferedInputStream(inputStream);
ByteArrayOutputStream buf = new ByteArrayOutputStream();
int result = bis.read();
while(result != -1) {
    buf.write((byte) result);
    result = bis.read();
}

String rawJson = buf.toString("UTF-8");

edited Dec 12 '18 at 22:09

answered Dec 12 '18 at 21:34

frederikdebacker

593
5
14

Yes, but that doesn't return String. It is `InputStream`. – Tina J Dec 12 '18 at 21:37
2

You can read an inputstream into a String. You can check https://stackoverflow.com/questions/309424/how-to-read-convert-an-inputstream-into-a-string-in-java – frederikdebacker Dec 12 '18 at 21:44
yes, I know. But thinking if there is an easier way to do that (btw, please post the full answer so I can mark you as best answer) – Tina J Dec 12 '18 at 21:46

How to get raw JSON text from Unirest response in Java

2 Answers2