ANDROID Volley + Gson(POST) [英] ANDROID Volley + Gson (POST)

问题描述

你好.

我想使用gson发出发帖请求.

I want to make a post request using gson.

我在Android网站上实现了该类... http://developer.android.com/intl/pt -br/training/volley/request-custom.html

I got the class implemented into android website... http://developer.android.com/intl/pt-br/training/volley/request-custom.html

UserRequestHelper.userRequest(Request.Method.POST, EndpointURL.USUARIO, null, new Response.Listener<Usuario>() {
                    @Override
                    public void onResponse(Usuario response) {
                        Toast.makeText(getActivity(), "Cadastro realizado com sucesso!", Toast.LENGTH_SHORT).show();
                    }
                }, new Response.ErrorListener() {
                    @Override
                    public void onErrorResponse(VolleyError error) {
                        Toast.makeText(getActivity(), "Erro ao realizar cadastro.", Toast.LENGTH_SHORT).show();
                    }
                });

我需要一个身体来发送用户吗?我如何发送对象用户发出发布请求?

I need a body to send the user? How i send the object user to make a post request?

有人可以帮我吗?

推荐答案

您必须覆盖getBody:

you have to override getBody :

    @Override
public byte[] getBody() throws AuthFailureError {
    return gson.toJson(dataIn).getBytes();
}

整个示例类(形成相同的链接)已

the whole example class(form the same link) edited:

public class GsonRequest<T> extends Request<T> {
private final Gson gson = new Gson();
private final Class<T> clazz;
private final Map<String, String> headers;
private final Response.Listener<T> listener;
private final Object dataIn;

/**
 * Make a GET request and return a parsed object from JSON.
 *
 * @param url URL of the request to make
 * @param clazz Relevant class object, for Gson's reflection
 * @param headers Map of request headers
 */
public GsonRequest(String url, Object dataIn, Class<T> clazz, Map<String, String> headers,
                   Response.Listener<T> listener, Response.ErrorListener errorListener) {
    super(Method.POST, url, errorListener);
    this.dataIn = dataIn;
    this.clazz = clazz;
    this.headers = headers;
    this.listener = listener;
}

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

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

@Override
public byte[] getBody() throws AuthFailureError {
    return gson.toJson(dataIn).getBytes();
}

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

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