我正在使用 volley 进行简单的 REST 请求并在其中传递一些 post 参数。但它总是给予回应BasicNetwork.performRequest: Unexpected response code 400。
我已尝试遵循自定义请求。
public class GsonRequestRest<T> extends Request<T>{
private static final String PROTOCOL_CHARSET = "utf-8";
private static final String PROTOCOL_CONTENT_TYPE = String.format("application/json; charset=%s", PROTOCOL_CHARSET);
private final Listener<T> mListener;
private final String mRequestBody;
private Gson mGson;
private Class<T> mJavaClass;
private Map<String, String> params;
public GsonRequestLoginRest(int method, String url, Class<T> cls, String requestBody, Map<String, String> params,Listener<T> listener,ErrorListener errorListener) {
super(method, url, errorListener);
mGson = new Gson();
mJavaClass = cls;
mListener = listener;
mRequestBody = requestBody;
this.params = params;
}
@Override
protected Map<String, String> getParams() throws com.android.volley.AuthFailureError {
return params;
};
@Override
protected void deliverResponse(T response) {
mListener.onResponse(response);
}
private Map<String, String> headers = new HashMap<String, String>();
@Override
public Map<String, String> getHeaders() throws AuthFailureError {
return headers;
}
@Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data, HttpHeaderParser.parseCharset(response.headers));
T parsedGSON = mGson.fromJson(jsonString, mJavaClass);
return Response.success(parsedGSON,HttpHeaderParser.parseCacheHeaders(response));
} catch (IOException e) {
Log.d("tag", e.getMessage());
return Response.error(new ParseError(e));
} catch (JsonSyntaxException je) {
return Response.error(new ParseError(je));
}
}
@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;
}
}
//In your extended request class
@Override
protected VolleyError parseNetworkError(VolleyError volleyError){
if(volleyError.networkResponse != null && volleyError.networkResponse.data != null){
VolleyError error = new VolleyError(new String(volleyError.networkResponse.data));
volleyError = error;
}
return volleyError;
}
}
我确实尝试在getParams()其中覆盖并传递参数。但它没有传递参数并抛出错误 400。我在这里和这里尝试了很多建议，但对我没有任何帮助。Volley中是否有任何错误。?
请指导。