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这是之前写的http://www.cnblogs.com/freexiaoyu/p/3955137.html
关于GsonReques的用户,这个在POST请求传参数的时候GsonRequest构造第四个参数(POST请求参数)的时候接收不到参数原因是原来的类没有重写一个写法
@Override
protected Map<String, String> getParams() throws AuthFailureError {
return params;
}
用原来的方法想要实现POST参数请求只能在Response.ErrorListener后面重写getParams,下面请求方法中构造为null的就是传递params
GsonRequest<ResultModel> gsonRequest=new GsonRequest<ResultModel> (Request.Method.POST, AppConfig.APIURL, ResultModel.class, null, new Response.Listener<ResultModel>() { @Override public void onResponse(ResultModel response) { VolleyLog.e("Error: %s", "成功"+ response); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { VolleyLog.e("Error: %s", "失败"+ error); } }){ @Override protected Map<String, String> getParams() throws AuthFailureError { Map<String, String> params = new HashMap<String, String>(); //Post参数 return params; }}; requestQueue.add(gsonRequest);
下面是一个完成的类
import java.io.UnsupportedEncodingException; import java.util.Map; import com.android.volley.AuthFailureError; import com.android.volley.NetworkResponse; import com.android.volley.ParseError; import com.android.volley.Request; import com.android.volley.Response; import com.android.volley.Response.ErrorListener; import com.android.volley.Response.Listener; import com.android.volley.toolbox.HttpHeaderParser; import com.google.gson.Gson; import com.google.gson.JsonSyntaxException; public class GsonRequest<T> extends Request<T> { private Gson mGson = new Gson(); private Class<T> clazz; private Map<String, String> headers; private Map<String, String> params; private Listener<T> listener; /** * 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 */ public GsonRequest(int method, String url, Class<T> clazz, Listener<T> listener, ErrorListener errorListener) { super(method, url, errorListener); this.clazz = clazz; this.listener = listener; mGson = new Gson(); } /** * Make a POST 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 */ public GsonRequest(int method, String url, Class<T> clazz, Map<String, String> params, Listener<T> listener, ErrorListener errorListener) { super(method, url, errorListener); this.clazz = clazz; this.params = params; this.listener = listener; this.headers = null; mGson = new Gson(); } @Override public Map<String, String> getHeaders() throws AuthFailureError { return headers != null ? headers : super.getHeaders(); } @Override protected Map<String, String> getParams() throws AuthFailureError { return params; } @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)); return Response.success( mGson.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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原文地址:http://www.cnblogs.com/freexiaoyu/p/4540122.html