如何使用HttpWebRequest类将来自C＃的Web服务的发布数据发送到Web应用程序？ [英] How can I send a post data from a web service in C# to a web application using a HttpWebRequest class ?

问题描述

我使用此代码



[WebMethod]

公共字符串GetResponsePOSTData（）

{

string valueReturn = string.Empty;

try

{

//我们的postvars

string dataToPost =username = username&password = password;

byte [] buffer = Encoding.ASCII.GetBytes（dataToPost）;

//初始化，我们使用localhost，如果适用则更改

HttpWebRequest WebReq =（HttpWebRequest）WebRequest.Create（http：// localhost：8081 / testSubmit.php）;



//我们的方法是post，否则缓冲区（postvars）将无用

WebReq.Method =POST;



//我们对postvars使用form contentType。

//WebReq.ContentType =application / x-www-form-urlencoded;

WebReq.ContentType =text / xml;

//缓冲区的长度（postvars）用作contentlength。

WebReq.ContentLength = buffer.Length; < br $> b $ b

//我们打开一个用于编写postvars的流

Stream PostData = WebReq.GetRequestStream（）;

//现在我们写，然后，我们关闭。结束总是很重要！

PostData.Write（buffer，0，buffer.Length）;

PostData.Close（）;



//获取响应句柄，我们还没有真正的回复！

HttpWebResponse WebResp =（HttpWebResponse）WebReq.GetResponse（）;



//现在，我们读取响应（字符串）并输出它。

Stream Answer = WebResp.GetResponseStream（）;

StreamReader _Answer = new StreamReader（Answer）;

valueReturn = _Answer.ReadToEnd（）。ToString（）;

}

catch（Exception ex）

{

Console.WriteLine（ex.Message）;

}



返回值返回;

}



但它返回：



此XML hav似乎没有任何与之相关的风格信息。文档树如下所示。



它必须添加参数[WebMethod]或在Web.Config文件中进行配置???

解决方案

参见 http://forums.asp.net/t/1799042.aspx?How+to+call+WebMethod+of+a+Web+service+using+HttpWebRequest+object+ [ ^ ]

I use this code

[WebMethod]
public string GetResponsePOSTData()
{
string valueReturn = string.Empty;
try
{
//Our postvars
string dataToPost = "username=username&password=password";
byte[] buffer = Encoding.ASCII.GetBytes(dataToPost);
//Initialization, we use localhost, change if applicable
HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create("http://localhost:8081/testSubmit.php");

//Our method is post, otherwise the buffer (postvars) would be useless
WebReq.Method = "POST";

//We use form contentType, for the postvars.
//WebReq.ContentType = "application/x-www-form-urlencoded";
WebReq.ContentType = "text/xml";
//The length of the buffer (postvars) is used as contentlength.
WebReq.ContentLength = buffer.Length;

//We open a stream for writing the postvars
Stream PostData = WebReq.GetRequestStream();
//Now we write, and afterwards, we close. Closing is always important!
PostData.Write(buffer, 0, buffer.Length);
PostData.Close();

//Get the response handle, we have no true response yet!
HttpWebResponse WebResp = (HttpWebResponse)WebReq.GetResponse();

//Now, we read the response (the string), and output it.
Stream Answer = WebResp.GetResponseStream();
StreamReader _Answer = new StreamReader(Answer);
valueReturn = _Answer.ReadToEnd().ToString();
}
catch(Exception ex)
{
Console.WriteLine(ex.Message);
}

return valueReturn;
}

but it returns :

This XML file does not appear to have any style information associated with it. The document tree is shown below.

it must add arguments [WebMethod] or make a configuration in the Web.Config file ???

解决方案

See http://forums.asp.net/t/1799042.aspx?How+to+call+WebMethod+of+a+Web+service+using+HttpWebRequest+object+[^]

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