微信接口用JSON组织数据，JSON，即【JavaScript对象标记法】，英文名称是JavaScript Object Notation.
POST数据和接收数据时，和一般的FORM不一样，如果你还停留在form带上参数来POST数据给服务器端，那有必要学习以下内容。下面以C#为例，看看如何在Get或者Post一个URL地址，并接受其返回的Json数据.
public static string PostUrl(string url, string postData)
{
string result = "";
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
req.Method = "POST";
req.ContentType = "application/json";
byte[] data = Encoding.UTF8.GetBytes(postData);
req.ContentLength = data.Length;
using (Stream reqStream = req.GetRequestStream())
{
reqStream.Write(data, 0, data.Length);
reqStream.Close();
}
HttpWebResponse resp = (HttpWebResponse)req.GetResponse();
Stream stream = resp.GetResponseStream();
//获取响应内容
using (StreamReader reader = new StreamReader(stream, Encoding.UTF8))
{
result = reader.ReadToEnd();
}
return result;
}
