如何使用Volley发送带有JSON主体的POST请求？

本文介绍了如何使用Volley发送带有JSON主体的POST请求？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

如何使用volley库将这些参数传递给post方法。查看链接和屏幕短片 JSON STRUCTURE url： - POST api.wego/flights/api/k/2/searches?api_key=12345&ts_code=123

How to pass these parameter into post method using volley library .see link and screen short JSON STRUCTURE url:- POST api.wego/flights/api/k/2/searches?api_key=12345&ts_code=123

发布参数： - 链接： - support.wan.travel/hc/en-us/articles/200191669-Wego-Flights-API 。我厌倦了，但又面临错误。

Post parameters:- link :- support.wan.travel/hc/en-us/articles/200191669-Wego-Flights-API. i tired this but again facing error.

StringEntity params= new StringEntity ("{\"trip\":\"[\" {\"departure_code\":\","+departure,"arrival_code \":\"+"+arrival+","+"outbound_date\":\","+outbound,"inbound_date\":\","+inbound+"}\"]\"}"); request.addHeader("content-type", "application/json"); request.addHeader("Accept","application/json");

推荐答案

通常的方法是使用带键值对的 HashMap 作为Volley的请求参数

Usual way is to use a HashMap with Key-value pair as request parameters with Volley

与以下示例类似，您需要根据具体要求进行自定义。

Similar to the below example, you need to customize for your specific requirement.

选项1：

final String URL = "URL"; // Post params to be sent to the server HashMap<String, String> params = new HashMap<String, String>(); params.put("token", "token_value"); params.put("login_id", "login_id_value"); params.put("UN", "username"); params.put("PW", "password"); JsonObjectRequest request_json = new JsonObjectRequest(URL, new JSONObject(params), new Response.Listener<JSONObject>() { @Override public void onResponse(JSONObject response) { try { //Process os success response } catch (JSONException e) { e.printStackTrace(); } } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { VolleyLog.e("Error: ", error.getMessage()); } }); // add the request object to the queue to be executed ApplicationController.getInstance().addToRequestQueue(request_json);

注意：HashMap可以将自定义对象作为值

NOTE: A HashMap can have custom objects as value

选项2：

在请求正文中直接使用JSON

Directly using JSON in request body

try { RequestQueue requestQueue = Volley.newRequestQueue(this); String URL = "..."; JSONObject jsonBody = new JSONObject(); jsonBody.put("firstkey", "firstvalue"); jsonBody.put("secondkey", "secondobject"); final String mRequestBody = jsonBody.toString(); StringRequest stringRequest = new StringRequest(Request.Method.POST, URL, new Response.Listener<String>() { @Override public void onResponse(String response) { Log.i("LOG_VOLLEY", response); } }, new Response.ErrorListener() { @Override public void onErrorResponse(VolleyError error) { Log.e("LOG_VOLLEY", error.toString()); } }) { @Override public String getBodyContentType() { return "application/json; charset=utf-8"; } @Override public byte[] getBody() throws AuthFailureError { try { return mRequestBody == null ? null : mRequestBody.getBytes("utf-8"); } catch (UnsupportedEncodingException uee) { VolleyLog.wtf("Unsupported Encoding while trying to get the bytes of %s using %s", mRequestBody, "utf-8"); return null; } } @Override protected Response<String> parseNetworkResponse(NetworkResponse response) { String responseString = ""; if (response != null) { responseString = String.valueOf(response.statusCode); } return Response.success(responseString, HttpHeaderParser.parseCacheHeaders(response)); } }; requestQueue.add(stringRequest); } catch (JSONException e) { e.printStackTrace(); }