jp.egg.android.request.volley.JacksonRequest.java Source code

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Here is the source code for jp.egg.android.request.volley.JacksonRequest.java

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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 jp.egg.android.request.volley;

import java.io.IOException;
import java.io.UnsupportedEncodingException;

import org.json.JSONObject;

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 com.android.volley.toolbox.HttpHeaderParser;
import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;

/**
 * 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 JacksonRequest extends VolleyBaseRequest<JsonNode> {

    /**
     * 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 is allowed and
     *   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 JacksonRequest(Object requestBody, Listener<JsonNode> listener, ErrorListener errorListener) {
        super(null, null, 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, JSONObject jsonRequest, Listener<JSONObject> listener,
    //            ErrorListener errorListener) {
    //        this(jsonRequest == null ? Method.GET : Method.POST, url, jsonRequest,
    //                listener, errorListener);
    //    }

    @Override
    protected Response<JsonNode> parseNetworkResponse(NetworkResponse response) {
        try {
            String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));

            ObjectMapper om = new ObjectMapper();
            JsonNode jnode = om.readTree(jsonString);

            //            String jsonString =
            //                new String(response.data, HttpHeaderParser.parseCharset(response.headers));

            return Response.success(jnode, HttpHeaderParser.parseCacheHeaders(response));
        } catch (UnsupportedEncodingException e) {
            return Response.error(new ParseError(e));
        } catch (JsonProcessingException e) {
            return Response.error(new ParseError(e));
        } catch (IOException e) {
            return Response.error(new ParseError(e));
        }
    }
}