android – 在Volley中创建Jackson解析的请​​求

概述我想在Volley中创建一个Jackson JSONRequest实现.像大多数人一样,我的请求/响应将具有类型X的请求对象和类型为Y的响应对象. Volley Request基类将两者定义为相同… public class JacksonRequest<T> extends Request<T>...protected Response<T> parseNetworkResponse(Net 我想在Volley中创建一个Jackson JSONRequest实现.像大多数人一样,我的请求/响应将具有类型X的请求对象和类型为Y的响应对象.

Volley Request基类将两者定义为相同…

public class JacksonRequest<T> extends Request<T>...protected Response<T> parseNetworkResponse(NetworkResponse response)

这对我来说没什么意义.我无法想象许多REST请求对请求和响应使用相同的结构.

我错过了一些明显的东西吗？

解决方法 这是我的实施……

public class JacksonRequest<T> extends JsonRequest<T>{    private Class<T>    responseType;    /**     * Creates a new request.     *      * @param method     *            the http method to use     * @param url     *            URL to fetch the JsON from     * @param requestData     *            A {@link Object} to post and convert into Json as 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(int method,String url,Object requestData,Class<T> responseType,Listener<T> Listener,ErrorListener errorListener)    {        super(method,url,(requestData == null) ? null : Mapper.string(requestData),Listener,errorListener);        this.responseType = responseType;    }    @OverrIDe    protected Response<T> parseNetworkResponse(NetworkResponse response)    {        try        {            String JsonString = new String(response.data,httpheaderParser.parseCharset(response.headers));            return Response.success(Mapper.objectOrThrow(JsonString,responseType),httpheaderParser.parseCacheheaders(response));        }        catch (Exception e)        {            return Response.error(new ParseError(e));        }    }}

上面使用的Mapper类只是一个小包装类…

/** * Singleton wrapper class which configures the Jackson JsON parser. */public final class Mapper{    private static ObjectMapper MAPPER;    public static ObjectMapper get()    {        if (MAPPER == null)        {            MAPPER = new ObjectMapper();            // This is useful for me in case I add new object propertIEs on the server sIDe which are not yet available on the clIEnt.               MAPPER.configure(DeserializationConfig.Feature.FAIL_ON_UNKNowN_PROPERTIES,false);        }        return MAPPER;    }    public static String string(Object data)    {        try        {            return get().writeValueAsstring(data);        }        catch (Exception e)        {            e.printstacktrace();            return null;        }    }    public static <T> T objectOrThrow(String data,Class<T> type) throws JsonParseException,JsonMapPingException,IOException    {        return get().readValue(data,type);    }    public static <T> T object(String data,Class<T> type)    {        try        {            return objectOrThrow(data,type);        }        catch (Exception e)        {            e.printstacktrace();            return null;        }    }}

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