ai.eve.volley.request.JsonRequest.java Source code

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Here is the source code for ai.eve.volley.request.JsonRequest.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 ai.eve.volley.request;

import org.apache.http.protocol.HTTP;

import java.io.DataOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;

import ai.eve.volley.Listener;
import ai.eve.volley.NetroidLog;
import ai.eve.volley.NetworkResponse;
import ai.eve.volley.Request;
import ai.eve.volley.Response;

/**
 * A request for retrieving a T type response body at a given URL that also
 * optionally sends along a JSON body in the request specified.
 * 
 * @param <T>
 *            JSON type of response expected
 */
public abstract class JsonRequest<T> extends Request<T> {
    /** Charset for request. */
    private static final String PROTOCOL_CHARSET = "utf-8";

    /** Content type for request. */
    private static final String PROTOCOL_CONTENT_TYPE = String.format("application/json; charset=%s",
            PROTOCOL_CHARSET);

    private final String mRequestBody;

    public JsonRequest(int method, String url, String requestBody, Listener<T> listener) {
        super(method, url, listener);
        mRequestBody = requestBody;
    }

    @Override
    abstract protected Response<T> parseNetworkResponse(NetworkResponse response);

    @Override
    public String getBodyContentType() {
        return PROTOCOL_CONTENT_TYPE;
    }

    @Override
    public void getBody(HttpURLConnection connection) {
        try {
            if (mRequestBody != null) {
                connection.setDoOutput(true);
                connection.addRequestProperty(HTTP.CONTENT_TYPE, getBodyContentType());
                DataOutputStream out = new DataOutputStream(connection.getOutputStream());
                out.write(mRequestBody.getBytes(PROTOCOL_CHARSET));
                out.close();
            }
        } catch (UnsupportedEncodingException uee) {
            NetroidLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", mRequestBody,
                    PROTOCOL_CHARSET);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}