content: /*
   * 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.cjj.volley.toolbox;
  
  import com.cjj.volley.NetworkResponse;
  import com.cjj.volley.Request;
  import com.cjj.volley.Response;
  import com.cjj.volley.VolleyLog;
  import com.cjj.volley.Response.ErrorListener;
  import com.cjj.volley.Response.Listener;
  
  import java.io.UnsupportedEncodingException;
  
  /**
   * 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 Listener<T> mListener;
      private final String mRequestBody;
  
      /**
       * Deprecated constructor for a JsonRequest which defaults to GET unless {@link #getPostBody()}
       * or {@link #getPostParams()} is overridden (which defaults to POST).
       *
       * @deprecated Use {@link #JsonRequest(int, String, String, Listener, ErrorListener)}.
       */
      public JsonRequest(String url, String requestBody, Listener<T> listener,
              ErrorListener errorListener) {
          this(Method.DEPRECATED_GET_OR_POST, url, requestBody, listener, errorListener);
      }
  
      public JsonRequest(int method, String url, String requestBody, Listener<T> listener,
              ErrorListener errorListener) {
          super(method, url, errorListener);
          mListener = listener;
          mRequestBody = requestBody;
      }
  
      @Override
      protected void deliverResponse(T response) {
          mListener.onResponse(response);
      }
  
      @Override
      abstract protected Response<T> parseNetworkResponse(NetworkResponse response);
  
      /**
       * @deprecated Use {@link #getBodyContentType()}.
       */
      @Override
      public String getPostBodyContentType() {
          return getBodyContentType();
      }
  
      /**
       * @deprecated Use {@link #getBody()}.
       */
      @Override
      public byte[] getPostBody() {
          return getBody();
      }
  
      @Override
      public String getBodyContentType() {
          return PROTOCOL_CONTENT_TYPE;
      }
  
      @Override
      public byte[] getBody() {
          try {
              return mRequestBody == null ? null : mRequestBody.getBytes(PROTOCOL_CHARSET);
          } catch (UnsupportedEncodingException uee) {
              VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s",
                      mRequestBody, PROTOCOL_CHARSET);
              return null;
          }
      }
  }
  