C++ HttpWebRequest发送POST请求，参数以json格式传递

	string PostUrl = "URL";
JObject patientinfo = new JObject();
patientinfo["name"] = "TOM";
patientinfo["age"] = 12;
string sendData = JsonConvert.SerializeObject(patientinfo);
//eg:
发送Url需要的格式：sendData={"ids":[123],"Name":小黑}
string resultData = Post(sendData, PostUrl);

封装Post函数

 public string Post(string parameterData, string serviceUrl, string ContentType = "application/json", string Accept = "application/json")
{
//先根据用户请求的uri构造请求地址
//string serviceUrl = string.Format("{0}/{1}", this.BaseUri, uri);
//创建Web访问对象
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(serviceUrl);
//把用户传过来的数据转成“UTF-8”的字节流
byte[] buf = System.Text.Encoding.GetEncoding("UTF-8").GetBytes(parameterData);
myRequest.Method = "POST";
//myRequest.Accept = "application/json";
//myRequest.ContentType = "application/json";
// //Content-Type: application/x-www-form-urlencoded 
myRequest.AutomaticDecompression = DecompressionMethods.GZip;
myRequest.Accept = Accept;
//myRequest.ContentType = ContentType;
myRequest.ContentType = "application/json; charset=UTF-8";
myRequest.ContentLength = buf.Length;
myRequest.MaximumAutomaticRedirections = 1;
myRequest.AllowAutoRedirect = true;
//myRequest.Headers.Add("content-type", "application/json");
//myRequest.Headers.Add("accept-encoding", "gzip");
//myRequest.Headers.Add("accept-charset", "utf-8");
//发送请求
Stream stream = myRequest.GetRequestStream();
stream.Write(buf, 0, buf.Length);
stream.Close();
//通过Web访问对象获取响应内容
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
//通过响应内容流创建StreamReader对象，因为StreamReader更高级更快
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
//string returnXml = HttpUtility.UrlDecode(reader.ReadToEnd());//如果有编码问题就用这个方法
string returnData = reader.ReadToEnd();//利用StreamReader就可以从响应内容从头读到尾
reader.Close();
myResponse.Close();
return returnData;
}

最后

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