Volley Request的继承与异步映射JSON对象

文章中继承了Volley的 request,并在请求返回的时候在异步的时候就转了JSON对象

代码如下,包含了POST与GET

private static final String PROTOCOL_CONTENT_TYPE = String.format("application/json; charset=%s",  "utf-8");private final String requestBody;private final Gson gson = new Gson();private final Class<T> clazz;private final Map<String, String> headers;private final Response.Listener<T> listener;private boolean requestBodyGzipEnable = true;

构造函数

public GsonRequest(String url, Class<T> clazz, Response.Listener<T> listener, Response.ErrorListener errorListener) {    this(Method.GET, url, null, clazz, listener, errorListener);}public GsonRequest(int method, String url, String requestBody, Class<T> clazz, Response.Listener<T> listener,        Response.ErrorListener errorListener) {    this(method, url, null, requestBody, clazz, listener, errorListener);}public GsonRequest(int method, String url, Map<String, String> headers, String requestBody, Class<T> clazz,        Response.Listener<T> listener, Response.ErrorListener errorListener) {    super(method, url, errorListener);    this.clazz = clazz;    this.headers = headers;    this.listener = listener;    this.requestBody = requestBody;}

是否需要GZip压缩(项目中需要,可根据实际情况来添加是否需要) (Gzip这个类就不贴出来了)

public void setRequestBodyGzipEnable(boolean enable){    requestBodyGzipEnable = enable;}

@Overridepublic Map<String, String> getHeaders() throws AuthFailureError {    return headers != null ? headers : super.getHeaders();}

@Overrideprotected void deliverResponse(T response) {    listener.onResponse(response);}

@Overrideprotected Response<T> parseNetworkResponse(NetworkResponse response) {    try {        String json = new String(response.data, HttpHeaderParser.parseCharset(response.headers));

//就在这里,返回成功的时候直接转成了JSON对象,        return Response.success(gson.fromJson(json, clazz), HttpHeaderParser.parseCacheHeaders(response));    } catch (UnsupportedEncodingException e) {        return Response.error(new ParseError(e));    } catch (JsonSyntaxException e) {        return Response.error(new ParseError(e));    }}

@Overridepublic String getBodyContentType() {    return PROTOCOL_CONTENT_TYPE;}@Overridepublic byte[] getBody() {    try {        if(requestBody == null){            return null;        }        return this.requestBodyGzipEnable ? Gzip.gzip(requestBody) : requestBody.getBytes();    } catch (Exception e) {        Logger.e(TAG, e.toString(), e);        return null;    }}

还有一个Networking的类

public class Networking {    private RequestQueue mQueue;    private static class SingletonHolder {        private static final Networking networking = new Networking();    }    protected Networking() {        mQueue = Volley.newRequestQueue(AppEnv.getApplicationContext());    }    private static RequestQueue getRequestQueue() {        return SingletonHolder.networking.mQueue;    }    public static <T> Request<T> add(Request<T> request) {        RetryPolicy retryPolicy = new DefaultRetryPolicy(Configure.TIME_OUT, Configure.RETRY_COUNT, 1);        return add(request, retryPolicy);    }    public static <T> Request<T> add(Request<T> request, @NonNull RetryPolicy retryPolicy) {        request.setRetryPolicy(retryPolicy);        return getRequestQueue().add(request);    }    public static void cancelAll(final Object tag) {        getRequestQueue().cancelAll(tag);    }    public static void cancelAll(RequestQueue.RequestFilter filter) {        getRequestQueue().cancelAll(filter);    }

使用的时候如下

public static void getShippingDetails(final  HttpCallback<ShippingDetailResponse> callback){    final String url = UrlConstants.ShippingDetailURL;    Logger.d(TAG, "url =" + url);    GsonRequest<ShippingDetailResponse> request = new GsonRequest<ShippingDetailResponse>(url, ShippingDetailResponse.class, new Response.Listener<ShippingDetailResponse>() {        @Override        public void onResponse(ShippingDetailResponse response) {            if(callback!=null)                callback.onSuccess(response);        }    }, new Response.ErrorListener() {        @Override        public void onErrorResponse(VolleyError err) {            Logger.e(TAG, "onError: " + url);            if (callback != null) {                callback.onError(err.toString(), err);            }        }    });    Networking.add(request);}

HttpCallback  //是自己写的一个接口

public interface HttpCallback<T> {    void onSuccess(T response);    void onError(String errMsg, Throwable e);}

使用起来还是蛮方便的 ,POST的就不再贴代码了!,欢迎各位看官指点,多谢!