/// <summary>
/// 获取远程页面的返回信息，以XML格式上载后获取
/// </summary>
/// <param name="url">资源的URL</param>
/// <param name="parameter">要上载的字符串</param>
/// <returns>响应后的资源</returns>
public static string GetHttpResponse(string url, string parameter)
{
if (string.IsNullOrEmpty(url))
{
throw new UrlIsNullOrEmptyException();
}
if (!RegexService.IsMatch(url, RegexPattern.Url))
{
throw new UrlFormatIsErrorException();
}
if (string.IsNullOrEmpty(parameter))
{
throw new UploadParamsIsNullOrEmptyException();
}
string strReturnString = null;
using (WebClient webClient = new WebClient())
{
webClient.Credentials = CredentialCache.DefaultCredentials;
webClient.Encoding = Encoding.Default;
webClient.Headers.Add(HttpRequestHeader.ContentType, "text/xml");
strReturnString = webClient.UploadString(url, parameter);
}
return(strReturnString);
}
/// <summary>
/// 获取远程页面的返回信息，只获取，不上载
/// </summary>
/// <param name="url">带请求参数的url地址</param>
/// <param name="encoding">编码方式</param>
/// <returns>响应后的资源</returns>
public static string GetHttpResponse(string url, Encoding encoding)
{
if (string.IsNullOrEmpty(url))
{
throw new UrlIsNullOrEmptyException();
}
if (!RegexService.IsMatch(url, RegexPattern.Url))
{
throw new UrlFormatIsErrorException();
}
if (encoding == null)
{
throw new EncodingIsNullException();
}
string strReturnString = null;
using (WebClient webClient = new WebClient())
{
webClient.Credentials = CredentialCache.DefaultCredentials;
webClient.Encoding = encoding;
strReturnString = webClient.DownloadString(url);
}
return(strReturnString);
}
/// <summary>
/// 获取指定路径下的模板的HTML源代码
/// </summary>
/// <param name="templateUrlPath">模板的路径（URL格式的路径）</param>
/// <param name="encoding">网页类型（有些是UTF8，有些是GB2312）</param>
/// <returns>源代码</returns>
public static string GetHtmlCode(string templateUrlPath, Encoding encoding)
{
if (string.IsNullOrEmpty(templateUrlPath))
{
throw new UrlIsNullOrEmptyException();
}
if (!RegexService.IsMatch(templateUrlPath, RegexPattern.Url))
{
throw new UrlFormatIsErrorException();
}
if (encoding == null)
{
throw new EncodingIsNullException();
}
string htmlCode = "";
htmlCode = GetHttpResponse(templateUrlPath, encoding);
htmlCode = Regex.Replace(htmlCode, @"<!DOCTYPE\s*HTML\s*PUBLIC[^>]+>", "", RegexOptions.IgnoreCase | RegexOptions.Compiled);
return(htmlCode);
}
/// <summary>
/// 获取远程页面的返回信息，以不同字符集并以XML格式上载后获取，在请求的头部加上MD5的校验
/// </summary>
/// <param name="url">请求页面地址</param>
/// <param name="parameter">请求提交数据</param>
/// <param name="encoding">编码方式</param>
/// <param name="contentMd5">Content-MD5头域</param>
/// <returns>返回页面内容</returns>
public static string GetHttpResponse(string url, string parameter, Encoding encoding, string contentMd5)
{
if (string.IsNullOrEmpty(url))
{
throw new UrlIsNullOrEmptyException();
}
if (!RegexService.IsMatch(url, RegexPattern.Url))
{
throw new UrlFormatIsErrorException();
}
if (string.IsNullOrEmpty(parameter))
{
throw new UploadParamsIsNullOrEmptyException();
}
if (encoding == null)
{
throw new EncodingIsNullException();
}
if (string.IsNullOrEmpty(contentMd5))
{
throw new ContentMD5IsNullOrEmptyException();
}
string strRespData = null;
using (WebClient objWClient = new WebClient())
{
objWClient.Credentials = CredentialCache.DefaultCredentials;
objWClient.Encoding = encoding;
objWClient.Headers.Add(HttpRequestHeader.ContentType, "text/xml");
objWClient.Headers.Add(HttpRequestHeader.ContentMd5, contentMd5);
if (parameter.Length > 0)
{
strRespData = objWClient.UploadString(url, parameter);
}
else
{
strRespData = objWClient.DownloadString(url);
}
}
return(strRespData);
}
/// <summary>
/// 获得用户登录时的真实IP
/// </summary>
/// <returns>客户端IP地址</returns>
public static string GetClientIP()
{
string result = "未知";
try
{
string httpXForwardedFor = HttpContext.Current.Request.
ServerVariables["HTTP_X_FORWARDED_FOR"] as string;
if (httpXForwardedFor != null && httpXForwardedFor.Trim().Length > 0)
{
string[] strFromIP = httpXForwardedFor.Trim().Split(',');
for (int i = 0; i < strFromIP.Length; i++)
{
if (RegexService.IsMatch(
strFromIP[i], RegexPattern.IpAddress))
{
result = strFromIP[i];
break;
}
}
}
string httpVia = HttpContext.Current.Request.ServerVariables["HTTP_VIA"] as string;
if (result == "未知" && httpVia != null && httpVia.Trim().Length > 0)
{
result = httpVia;
}
string remoteAddr = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"] as string;
if (result == "未知" && remoteAddr != null && remoteAddr.Trim().Length > 0)
{
result = remoteAddr;
}
if (result == "未知" && HttpContext.Current.Request.UserHostName.Trim().Length > 0)
{
if (RegexService.IsMatch(HttpContext.Current.Request.UserHostName,
RegexPattern.IpAddress))
{
result = HttpContext.Current.Request.UserHostName;
}
else
{
IPAddress[] ipAddr = Dns.GetHostAddresses(HttpContext.Current.Request.UserHostName);
for (int i = 0; i < ipAddr.Length; i++)
{
if (RegexService.IsMatch(ipAddr[i].ToString(), RegexPattern.IpAddress))
{
result = ipAddr[i].ToString();
break;
}
}
}
}
}
catch
{
result = "未知";
}
return(result);
}