注意，这个方法仅仅适用于:该post页面处于websercive 站点下，或者是与webservice同属于一个主站点，即在iis里属于同一主站点的同级虚拟目录。
protected void btnSynData_Click(object sender, EventArgs e)
{
string wsUrl = "http://127.0.0.1:1113/yingxiao/clfbxd.asmx/huixie";
//注意：huixie 是webservice的方法名
string postData = "我是谁";
HttpConnectToServer(wsUrl, postData);
}
///
/// 发送消息到ws服务器
///
///
///
///
public string HttpConnectToServer(string ServerPage, string strXml)
{
string postData = "strXml=" + strXml;
byte[] dataArray = Encoding.Default.GetBytes(postData);
//创建请求
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(ServerPage);
request.Credentials = CredentialCache.DefaultCredentials;
request.CookieContainer = new CookieContainer();
request.Method = "POST";
request.ContentLength = dataArray.Length;
request.ContentType = "application/x-www-form-urlencoded";
//创建输入流
Stream dataStream = null;
try
{
dataStream = request.GetRequestStream();
}
catch (Exception)
{
return null;//连接服务器失败
}
//发送请求
dataStream.Write(dataArray, 0, dataArray.Length);
dataStream.Close();
//读取返回消息
string res = string.Empty;
try
{
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8);
res = reader.ReadToEnd();
reader.Close();
}
catch (Exception ex)
{
throw new Exception(ex.Message);
}
return res;
}
参考：http://www.jb51.net/article/34589.htm
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