Android Volley POST Json到服务器 [英] Android Volley POST Json to Server

问题描述

我正在使用Volley在Android设备和Web服务器之间传输数据.

我发现了有关将数据列表发送到服务器的问题.

例如，我的班级将生成如下数据集:

{
  "1": {
    "1_aID": "5",
    "2_aID": "5",
    "3_aID": "5",
    "4_aID": "5"
  },
  "2": {
    "1_bID": "3",
    "2_bID": "3",
    "3_bID": "3"
  },
  "3": {
    "1_cID": "4"
  }
}

如何将这些数据发送到服务器?

我找到了一些将数据发布到服务器的教程.它必须使用hashmap. 有更好的解决方案来处理这种情况吗?

解决方案

1. 发出像下面这样的排球请求，采用类似POST/GET的方法， url，response & error侦听器.并且用于发送您的json覆盖 getBody()方法，在其中传递您要发送的json.
2. 制作RequestQueue&向其中添加请求.您可以通过以下方式开始 呼叫start()

尝试一下:

// Instantiate the RequestQueue.
    RequestQueue queue = Volley.newRequestQueue(this);
    String url ="http://www.google.com";

    // Request a string response from the provided URL.
    StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    // your response

                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            // error
        }
    }){
        @Override
        public byte[] getBody() throws AuthFailureError {
            String your_string_json = ; // put your json
            return your_string_json.getBytes();
        }
    };
    // Add the request to the RequestQueue.
    queue.add(stringRequest);
    requestQueue.start();

有关更多信息，请参见 此

I am using Volley to transfer the data between Android device and web server.

I found a issue about sending a list of data to the server.

For example, my class will generate the data set like this:

{
  "1": {
    "1_aID": "5",
    "2_aID": "5",
    "3_aID": "5",
    "4_aID": "5"
  },
  "2": {
    "1_bID": "3",
    "2_bID": "3",
    "3_bID": "3"
  },
  "3": {
    "1_cID": "4"
  }
}

How can i send those data to Server?

I found some tutorial of Post data to server. It must using hashmap. Any better solution to handle this case?

解决方案

1. Make a volley request like bellow which takes method like POST/GET, url, response & error listener. And For sending your json override getBody() method in which pass the json you want to send.
2. Make a RequestQueue & add the request to it. You might start it by calling start()

Try this :

// Instantiate the RequestQueue.
    RequestQueue queue = Volley.newRequestQueue(this);
    String url ="http://www.google.com";

    // Request a string response from the provided URL.
    StringRequest stringRequest = new StringRequest(Request.Method.POST, url,
            new Response.Listener<String>() {
                @Override
                public void onResponse(String response) {
                    // your response

                }
            }, new Response.ErrorListener() {
        @Override
        public void onErrorResponse(VolleyError error) {
            // error
        }
    }){
        @Override
        public byte[] getBody() throws AuthFailureError {
            String your_string_json = ; // put your json
            return your_string_json.getBytes();
        }
    };
    // Add the request to the RequestQueue.
    queue.add(stringRequest);
    requestQueue.start();

For more info see this

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