如何使用Volley将数据发送到服务器？

问题描述：

我想使用Volley以下列格式将数据发送到服务器。我怎样才能做到这一点？如何使用Volley将数据发送到服务器？

[ [ 'CID'=> 1， 'PID'=> 1， '数量'=> 5， 'RID'=> 1， 'EID'=> 1， '做'=> 1 ，'takenAt'=>'2017-07-24 04:03:23']， ['cid'=> 1，'pid'=> 1，'quantity'=> 5，'rid'=> 2， 'eid'=> 1，'did'=> 1，'takenAt'=>'2017-07-24 04:03:23']， ['cid'=> 1，'pid'=> 1，''数量'=> 5，'rid'=> 3，'eid'=> 1，'did'=> 1，'takenAt'=>'2017-07-24 04:03:23'] ];

到目前为止，我已经做到了这一点，但它抛出一个异常

StringRequest stringRequest = new StringRequest(Request.Method.POST, Constant.API_SUBMIT_ORDER, new Response.Listener<String>() { 
      @Override 
      public void onResponse(String response) { 
       Log.e("DATA", "RESPONSE===" + response); 
      } 
     }, new Response.ErrorListener() { 
      @Override 
      public void onErrorResponse(VolleyError error) { 
       error.printStackTrace(); 
      } 
     }) { 
      @Override 
      protected Map<String, String> getParams() { 
       Calendar cal = Calendar.getInstance(); 
       String time2 = new java.text.SimpleDateFormat("yyyy-MM-dd HH:mm:ss a ").format(cal.getTime()); 
       Map<String, String> orders = new HashMap<>(); 
       for (int i = 0; i < myProductArrayList.size(); i++) { 
        orders.put("cid", "1"); 
        orders.put("skuid", myProductArrayList.get(i).getProductId()); 
        orders.put("qty", "50"); 
        orders.put("rid", "1"); 
        orders.put("eid", "mukulsingh"); 
        orders.put("did", "1"); 
        orders.put("takenAt", time2); 
       } 
       return orders; 
      } 
     }; 

     stringRequest.setRetryPolicy(new DefaultRetryPolicy(
       MY_SOCKET_TIMEOUT_MS, 
       DefaultRetryPolicy.DEFAULT_MAX_RETRIES, 
       DefaultRetryPolicy.DEFAULT_BACKOFF_MULT)); 

     RequestQueue requestQueue = Volley.newRequestQueue(this); 
     requestQueue.add(stringRequest);

答

尝试使用这些类

VollyRequests

public class VollyRequests { 

    public void MakeStrRequest(final String Tag, String url, final ArrayList<RequestModel> list, final ResponceLisnter responceLisnter, final String HeaderKey) { 
    MyLog.ShowLog("Url", url); 

    StringRequest sr = new StringRequest(Request.Method.POST, url, new Response.Listener<String>() { 
     @Override 
     public void onResponse(String response) { 
      try { 
       responceLisnter.getResponce(response, Tag); 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 
     } 
    }, new Response.ErrorListener() { 
     @Override 
     public void onErrorResponse(VolleyError error) { 
      if (error instanceof TimeoutError || error instanceof NoConnectionError) { 
       responceLisnter.getResponceError(VollyError.TIMEOUT_ERROR, Tag); 
      } else if (error instanceof AuthFailureError) { 
       responceLisnter.getResponceError(VollyError.AUTH_ERROR, Tag); 
      } else if (error instanceof ServerError) { 
       responceLisnter.getResponceError(VollyError.SERVER_ERROR, Tag); 
      } else if (error instanceof NetworkError) { 
       responceLisnter.getResponceError(VollyError.NETWORK_ERROR, Tag); 
      } 
     } 
    }) { 
     @Override 
     protected Map<String, String> getParams() { 
      Map<String, String> params = new HashMap<String, String>(); 
      if (list.size() > 0) { 
       for (int i = 0; i < list.size(); i++) { 
        //MyLog.ShowLog(list.get(i).getKey(), list.get(i).getValue()); 
        params.put(list.get(i).getKey(), list.get(i).getValue()); 

       } 
      } 
      return params; 
     } 

     @Override 
     public Map<String, String> getHeaders() throws AuthFailureError { 
      Map<String, String> params = new HashMap<String, String>(); 
      params.put(WebKeys.Headerkey, HeaderKey); 
      return params; 
     } 
    }; 
    AbcApplication.getInstance().getRequestQueue().add(sr); 
    sr.setRetryPolicy(new DefaultRetryPolicy(50000, DefaultRetryPolicy.DEFAULT_MAX_RETRIES, DefaultRetryPolicy.DEFAULT_BACKOFF_MULT)); 
}

}

VollyError

public class VollyError { 
public static String TIMEOUT_ERROR = "Please try again."; 
public static String NETWORK_ERROR = "Please check your network and try again."; 
public static String SERVER_ERROR = "Please try again."; 
public static String AUTH_ERROR = "Please try again.";

}

RequestModel

public class RequestModel { 

String Key; 
String Value; 

public ArrayList<JSONObject> getJsonObjects() { 
    return jsonObjects; 
} 

public void setJsonObjects(ArrayList<JSONObject> jsonObjects) { 
    this.jsonObjects = jsonObjects; 
} 

ArrayList<JSONObject> jsonObjects; 

public RequestModel(String key, String value) { 
    this.Key = key; 
    this.Value = value; 
} 
public RequestModel(String key, ArrayList<JSONObject> jsonObjects) { 
    this.Key = key; 
    this.jsonObjects = jsonObjects; 
} 

public String getValue() { 
    return Value; 
} 

public void setValue(String value) { 
    Value = value; 
} 

public String getKey() { 
    return Key; 
} 

public void setKey(String key) { 
    Key = key; 
}

}

ResponceLisnter

public interface ResponceLisnter { 

void getResponce(String str, String Tag) throws JSONException; 

void getResponceError(String errorStr, String Tag);

}

如何调用凌空类：

public void callingrequest(){ 
    VollyRequests vollyRequest =new VollyRequests(); 
ArrayList<RequestModel> list = new ArrayList<>(); 
       list.add(new RequestModel(key, value)); 

vollyRequests.MakeStrRequest(Tag, WebUrl, list, responceLisnter, HeaderKey); 
} 
    private ResponceLisnter responceLisnter = new ResponceLisnter() { 
    @Override 
    public void getResponce(final String responce, String Tag) { 
     // here is responce 
    } 

    @Override 
    public void getResponceError(String errorStr, String Tag) { 
    // here is error 
    } 
};

应用类

public class AbcApplication extends Application { 

    //Static value Holders. 
    private static AbcApplication mInstance; 
    public static Context context; 
    private RequestQueue mRequestQueue; 
    public static int captureImgCount = 0; 

    public static synchronized AbcApplication getInstance() { 
     return mInstance; 
    } 

    @Override 
    public void onCreate() { 
     super.onCreate(); 
mInstance = this; 

     mRequestQueue = Volley.newRequestQueue(this);} 
public RequestQueue getRequestQueue() { 
     return mRequestQueue; 
    }

如何使用Volley将数据发送到服务器？

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