带有POST的GsonRequest [英] GsonRequest with POST
本文介绍了带有POST的GsonRequest的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
这是我目前正在使用的代码:
This is currently the code that I'm using:
/**
* Volley adapter for JSON requests that will be parsed into Java objects by Gson.
*/
public class GsonRequest<T> extends Request<T> {
private final Gson gson = new GsonBuilder()
.registerTypeAdapter(ClusterUnits.class, new ClusterUnitsDeserializer()).create();
private final Class<T> clazz;
private final Map<String, String> headers;
private final Listener<T> listener;
private JSONObject parameters = null;
/**
* 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(int method, String url, Class<T> clazz, Map<String, String> headers,
Listener<T> listener, ErrorListener errorListener) {
super(method, url, errorListener);
this.clazz = clazz;
this.headers = headers;
this.listener = listener;
}
public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> headers,
Listener<T> listener, ErrorListener errorListener, JSONObject parameters) {
this(method, url, clazz, headers, listener, errorListener);
this.parameters = parameters;
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers != null ? headers : super.getHeaders();
}
@Override
protected Map<String, String> getParams() throws AuthFailureError {
Map<String, String> result = new HashMap<String, String>();
try {
result = new ObjectMapper().readValue(
parameters.toString(), TypeFactory.defaultInstance().constructMapLikeType(HashMap.class, String.class, String.class));
} catch (IOException e) {
DLog.d(e);
}
Log.i("PARAMETERS_LENGTH", String.valueOf(result.size()));
return result;
}
@Override
protected void deliverResponse(T response) {
listener.onResponse(response);
}
@Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String json = new String(
response.data, HttpHeaderParser.parseCharset(response.headers));
Log.i("RESPONSE", json);
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));
}
}
}
发布数据是否正确?我用来执行HTTP请求,并使用GSON自动解码JSON.我继续收到错误消息,因为发布的参数不正确:(
Is it correct for posting data? I use to do HTTP requests and decode automatically the JSON with GSON. I continue to get errors because the params posted are not correct :(
推荐答案
我已经通过以下代码解决了该问题,即实现getBody并更改getBodyContentType:
I've solved the problem with the following code, i.e. implementing the getBody and changing the getBodyContentType:
/**
* Volley adapter for JSON requests that will be parsed into Java objects by Gson.
*/
public class GsonRequest<T> extends Request<T> {
private final Gson gson = new GsonBuilder()
.registerTypeAdapter(ClusterUnits.class, new ClusterUnitsDeserializer()).create();
private final Class<T> clazz;
private final Map<String, String> headers;
private final Listener<T> listener;
private JSONObject parameters = null;
/**
* 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(int method, String url, Class<T> clazz, Map<String, String> headers,
Listener<T> listener, ErrorListener errorListener) {
super(method, url, errorListener);
this.clazz = clazz;
this.headers = headers;
this.listener = listener;
}
public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> headers,
Listener<T> listener, ErrorListener errorListener, JSONObject parameters) {
this(method, url, clazz, headers, listener, errorListener);
this.parameters = parameters;
}
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers != null ? headers : super.getHeaders();
}
@Override
public String getBodyContentType() {
return "application/json";
}
@Override
public byte[] getBody() throws AuthFailureError {
try {
return parameters.toString().getBytes(getParamsEncoding());
} catch (UnsupportedEncodingException e) {
DLog.d(e);
}
return null;
}
@Override
protected void deliverResponse(T response) {
listener.onResponse(response);
}
@Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String json = new String(
response.data, HttpHeaderParser.parseCharset(response.headers));
Log.i("RESPONSE", json);
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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