c# 通过post请求

最新推荐文章于 2024-03-13 16:57:58 发布

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最新推荐文章于 2024-03-13 16:57:58 发布

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本文介绍两种实现HTTP POST请求的方法，并展示了如何在服务端处理请求数据及构造响应。第一种方法使用WebRequest发送请求和接收XML响应；第二种方法利用WebClient进行数据交换。此外，还提供了服务端处理请求的具体实例。

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/// <summary>
/// 提交数据请求方法一
/// </summary>
/// <param name="POSTURL">请求提交的地址如：http://xxx.xxx.xxx/interface/TestPostRequest</param>
/// <param name="PostData">提交的数据(字符串)</param>
/// <returns></returns>
public static string RequestData(string POSTURL, string PostData)
{
//发送请求的数据
WebRequest myHttpWebRequest = WebRequest.Create(POSTURL);
myHttpWebRequest.Method = "POST";
UTF8Encoding encoding = new UTF8Encoding();
byte[] byte1 = encoding.GetBytes(PostData);
myHttpWebRequest.ContentType = "application/x-www-form-urlencoded";
myHttpWebRequest.ContentLength = byte1.Length;
Stream newStream = myHttpWebRequest.GetRequestStream();
newStream.Write(byte1, 0, byte1.Length);
newStream.Close();

//发送成功后接收返回的XML信息
HttpWebResponse response = (HttpWebResponse)myHttpWebRequest.GetResponse();
string lcHtml = string.Empty;
Encoding enc = Encoding.GetEncoding("UTF-8");
Stream stream = response.GetResponseStream();
StreamReader streamReader = new StreamReader(stream, enc);
lcHtml = streamReader.ReadToEnd();
return lcHtml;
}

/// <summary>
/// 通过接口提交请求的公用方法方法二
/// </summary>
/// <param name="url">请求的接口地址如：http://xxx.xxx.xxx/interface/TestPostRequest</param>
/// <param name="senddata">要发送的报文</param>
/// <returns></returns>
public string GetPostStr(string url, string senddata)
{
System.Net.WebClient webc = new System.Net.WebClient();
var apiurl = new Uri(url);
string sendstr = senddata;
webc.Headers.Add("Content-Type", "text/xml");
//webc.Headers["Content-Type"] = "application/stream;charset=utf-8";//OK
var arr = webc.UploadData(apiurl, Encoding.UTF8.GetBytes(sendstr));
return Encoding.UTF8.GetString(arr) ;
}

/// <summary>
/// 服务端接收请求、处理并返回响应的数据
/// </summary>
public void TestPostRequest()
{
StreamReader reader = new StreamReader(System.Web.HttpContext.Current.Request.InputStream);
String xmlData = reader.ReadToEnd();

//string strRequestData = "接收到的请求数据是：" + xmlData;
//string strReponseData = "要返回的数据是：" + "<root><attReaderName>1</attReaderName></root>";
string strReponseData= "";
strReponseData+= "<root>" +
"<head>" +
"<errorCode>0</errorCode>" +
"<result>success</result>" +
"</head>" +
"</root>";

HttpContext.Current.Response.Write(strReponseData);
}