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/*
* Copyright (C) 2011 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.android.volley.toolbox;
import androidx.annotation.Nullable;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Response;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import java.io.UnsupportedEncodingException;
import org.json.JSONException;
import org.json.JSONObject;
/**
* A request for retrieving a {@link JSONObject} response body at a given URL, allowing for an
* optional {@link JSONObject} to be passed in as part of the request body.
*/
public class JsonObjectRequest extends JsonRequest<JSONObject> {
/**
* Creates a new request.
*
* @param method the HTTP method to use
* @param url URL to fetch the JSON from
* @param jsonRequest A {@link JSONObject} to post with the request. Null indicates no
* parameters will be posted along with request.
* @param listener Listener to receive the JSON response
* @param errorListener Error listener, or null to ignore errors.
*/
public JsonObjectRequest(
int method,
String url,
@Nullable JSONObject jsonRequest,
Listener<JSONObject> listener,
@Nullable ErrorListener errorListener) {
super(
method,
url,
(jsonRequest == null) ? null : jsonRequest.toString(),
listener,
errorListener);
}
/**
* Constructor which defaults to <code>GET</code> if <code>jsonRequest</code> is <code>null
* </code> , <code>POST</code> otherwise.
*
* @see #JsonObjectRequest(int, String, JSONObject, Listener, ErrorListener)
*/
public JsonObjectRequest(
String url,
@Nullable JSONObject jsonRequest,
Listener<JSONObject> listener,
@Nullable ErrorListener errorListener) {
this(
jsonRequest == null ? Method.GET : Method.POST,
url,
jsonRequest,
listener,
errorListener);
}
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString =
new String(
response.data,
HttpHeaderParser.parseCharset(response.headers, PROTOCOL_CHARSET));
return Response.success(
new JSONObject(jsonString), HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
}
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