http基础扩展

public class HttpExtend
{
/// <summary>
/// 日志
/// </summary>
public static readonly ILog Log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType);

/// <summary> 
/// post提交 Created By ZhangQC 2016.08.23
/// </summary>
/// <param name="postUrl"></param>
/// <param name="paramData"></param>
/// <returns></returns>
public string PostWebRequest(string postUrl, string paramData)
{
var ret = string.Empty;
try
{
ServicePointManager.Expect100Continue = false;//防止407 错误
Encoding dataEncode = Encoding.GetEncoding("GBK");
byte[] byteArray = dataEncode.GetBytes(paramData); //转化

var webReq = (HttpWebRequest)WebRequest.Create(new Uri(postUrl));
webReq.Method = "POST";
webReq.ContentType = "application/x-www-form-urlencoded";
webReq.ContentLength = byteArray.Length;

Stream newStream = webReq.GetRequestStream();
newStream.Write(byteArray, 0, byteArray.Length);//写入参数
newStream.Close();
var response = (HttpWebResponse)webReq.GetResponse();
// ReSharper disable once AssignNullToNotNullAttribute
var sr = new StreamReader(response.GetResponseStream(), encoding: Encoding.Default);
ret = sr.ReadToEnd();
sr.Close();
response.Close();
newStream.Close();
}
catch (Exception ex)
{
Log.ErrorFormat("Post请求出错，用于手机短信发送：{0}",ex);
}
return ret;
}
}