'how to read json response in jsp

My client side program is like this:

DefaultHttpClient httpClient = new DefaultHttpClient();
HttpResponse res = httpClient.execute(req);

Server side, I have composed a JSON response.

JSONObject JObject = new JSONObject();
JObject.put("ResponseCode", "100");
JObject.put("Status", "Success");
response.setContentType("application/json");    
PrintWriter out = response.getWriter();
out.print(JObject);
out.flush();

How can i read this ResponseCode and Status in Client side back.

javajavascriptjsonjsp


Solution 1:[1]

HttpResponse res = client.execute(req);
BufferedReader rd = new BufferedReader(new InputStreamReader(response.getEntity().getContent()));

String line = "";
line = rd.readLine();  /// Json Data

Solution 2:[2]

Something like this:

StatusLine statusLine = res.getStatusLine();
int statusCode = statusLine.getStatusCode();
if (statusCode == 200) // or whatever 
                {
HttpEntity entity = response.getEntity();
InputStream content = entity.getContent();
BufferedReader reader = new BufferedReader(new InputStreamReader(content, "utf-8"));
String line;
while ((line = reader.readLine()) != null) 
{
    builder.append(line);
}

sRet = builder.toString();

...

tknr = new JSONTokener(sRet);

Solution 3:[3]

You will have to convert the JSOn string to an object. If using Javascript you can use JSON.parse(json_str) or $.parseJSON if you use jQuery. After you have done it you can access those entries as usual:

var obj = JSON.parse(json_str);
var code = obj["ResponseCode"];

Edit

Using Java:

JSONObject obj = new JSONObject(json_string);
String code = obj.getString("ResponseCode");

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Suhas Gaikwad
Solution 2 Manuel del Castillo
Solution 3

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