I am calling a webservice to get a JSON string response and It contains backslashes which is not in original string. Below is my code for requesting a JSON string object which is: {"name":"Name","id":1}
protected String doInBackground(String... uri)
{
HttpClient httpclient = new DefaultHttpClient();
HttpResponse response;
String responseString = null;
try {
response = httpclient.execute(new HttpGet(uri[0]));
StatusLine statusLine = response.getStatusLine();
if(statusLine.getStatusCode() == HttpStatus.SC_OK){
ByteArrayOutputStream out = new ByteArrayOutputStream();
response.getEntity().writeTo(out);
out.close();
responseString = out.toString();
} else{
//Closes the connection.
response.getEntity().getContent().close();
throw new IOException(statusLine.getReasonPhrase());
}
} catch (ClientProtocolException e) {
//TODO Handle problems..
} catch (IOException e) {
//TODO Handle problems..
}
return responseString;
}
In post execute I just try to parse this respose string into JSONObject. code is bellow:
protected void onPostExecute(String result) {
super.onPostExecute(result);
TextView t1=(TextView)findViewById(R.id.textView1);
TextView t2=(TextView)findViewById(R.id.textView2);
//String s = result.replaceAll("\\", ""); //I have tried to escape backslashes also using this line.
String name="failure";
int id;
try
{
t1.setText(result);
JSONObject reader = new JSONObject(result.toString()); //Exception on this line.
//name = reader.getString("name").toString();
//id = reader.getInt("id");
t2.setText(name);
}
catch (Exception e)
{
t2.setText(e.toString());
}
}
Rsponse string is: "{\"name\":\"Name\",\"id\":1}" And when I try to parse it to JSONObject it throws an exception says: org.json.JSONException value "{"name":"Name","id":1}" type cannot converted into json object.
I know this is an old question, but I got stuck with the same problem , the only difference that, I had a JSONArray instead of a JSONObject . But the method I followed for my problem after scouring Stackoverflow for similar questions was the one I am going to state below, in case anyone comes looking for an answer just as I stumbled across your question.
First of all,you need to study the json response you receive. "{\"name\":\"Name\",\"id\":1}" is a String. You see the " before { and after }. If this string is the raw json you receive from your web service,then your method to escape the backslashes and then building a JSONObject out of that string ought to have worked. One method you could try is :
result = result.trim();
result = result.substring(1,result.length() - 1);
result = result.replace("\\","");
Then,
JSONObject reader = new JSONObject(result);
name = reader.getString("name");
id = reader.getInt("id");
The mantra for this solution was to get rid of those extra inverted commas before the json response and then creating a JSONObject from that string.
As for my situation regarding a JSONArray,the solution was as below:
Json response : {"error":false,"myorderdetails":{"order_id":"26","orderjson":"[{\"Name\":\"Disprin\",\"Id\":53,\"Quantity\":1,\"Price\":50}]"}}
JSONObject jObj = new JSONObject(response);
boolean error = jObj.getBoolean("error");
if (!error)
{
JSONObject jsonObj= jObj.getJSONObject("myorderdetails");
String s = jsonObj.getString("orderjson");
s = s.replace("\\", "");
JSONArray orderjson = new JSONArray(s);
for(int i=0;i<orderjson.length();i++){
JSONObject jsonObject=orderjson.getJSONObject(i);
String pname = (String)jsonObject.get("Name");
int pquantity = jsonObject.getInt("Quantity");
double pprice = jsonObject.getDouble("Price");
}