概述
检测本机是否联网（互联网）,“获取页面url”, 获取当前访问页面地址等…
public class RequestHelper
{
#region 检测本机是否联网（互联网）
[DllImport("wininet")]
private extern static bool InternetGetConnectedState(out int connectionDescription, int reservedValue);
/// <summary>
/// 检测本机是否联网
/// </summary>
/// <returns></returns>
public static bool IsConnectedInternet()
{
int i = 0;
if (InternetGetConnectedState(out i, 0))
{
//已联网
return true;
}
else
{
//未联网
return false;
}
}
#endregion
#region "获取页面url"
/// <summary>
/// 获取当前访问页面地址参数
/// </summary>
public static string GetScriptNameQueryString
{
get
{
return HttpContext.Current.Request.ServerVariables["QUERY_STRING"].ToString();
}
}
/// <summary>
/// 获取当前访问页面地址
/// </summary>
public static string GetScriptName
{
get
{
return HttpContext.Current.Request.ServerVariables["SCRIPT_NAME"].ToString();
}
}
/// <summary>
/// 获取当前访问页面Url
/// </summary>
public static string GetScriptUrl
{
get
{
return GetScriptNameQueryString == "" ? GetScriptName : string.Format("{0}?{1}", GetScriptName, GetScriptNameQueryString);
}
}
/// <summary>
/// 获取当前访问页面 参数
/// </summary>
public static string GetScriptNameQuery
{
get
{
return HttpContext.Current.Request.Url.Query;
}
}
#endregion
#region URL处理
/// <summary>
/// URL字符编码
/// </summary>
public static string UrlEncode(string str)
{
if (string.IsNullOrEmpty(str))
{
return "";
}
str = str.Replace("'", "");
return HttpContext.Current.Server.UrlEncode(str);
}
/// <summary>
/// URL字符解码
/// </summary>
public static string UrlDecode(string str)
{
if (string.IsNullOrEmpty(str))
{
return "";
}
return HttpContext.Current.Server.UrlDecode(str);
}
#endregion
#region 获得当前页面客户端的IP
/// <summary>
/// 获得当前页面客户端的IP
/// </summary>
/// <returns>当前页面客户端的IP</returns>
public static string GetIP()
{
string result = String.Empty;
result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];
if (string.IsNullOrEmpty(result))
{
result = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];
}
if(string.IsNullOrEmpty(result))
{
result = HttpContext.Current.Request.UserHostAddress;
}
if(string.IsNullOrEmpty(result))
{
return "127.0.0.1";
}
return result;
}
#endregion
#region URL中去除指定参数
/// <summary>
/// 中去除指定参数
/// </summary>
/// <param name="url">地址</param>
/// <param name="param">参数</param>
/// <returns></returns>
public static string buildurl(string url, string param)
{
string url1 = url;
if (url.IndexOf(param) > 0)
{
if (url.IndexOf("&", url.IndexOf(param) + param.Length) > 0)
{
url1 = url.Substring(0, url.IndexOf(param) - 1) + url.Substring(url.IndexOf("&", url.IndexOf(param) + param.Length) + 1);
}
else
{
url1 = url.Substring(0, url.IndexOf(param) - 1);
}
return url1;
}
else
{
return url1;
}
}
#endregion
/// <summary>
/// 判断当前页面是否接收到了Post请求
/// </summary>
/// <returns>是否接收到了Post请求</returns>
public static bool IsPost()
{
return HttpContext.Current.Request.HttpMethod.Equals("POST");
}
/// <summary>
/// 判断当前页面是否接收到了Get请求
/// </summary>
/// <returns>是否接收到了Get请求</returns>
public static bool IsGet()
{
return HttpContext.Current.Request.HttpMethod.Equals("GET");
}
/// <summary>
/// 返回指定的服务器变量信息
/// </summary>
/// <param name="strName">服务器变量名</param>
/// <returns>服务器变量信息</returns>
public static string GetServerString(string strName)
{
if (HttpContext.Current.Request.ServerVariables[strName] == null)
return "";
return HttpContext.Current.Request.ServerVariables[strName].ToString();
}
/// <summary>
/// 返回上一个页面的地址
/// </summary>
/// <returns>上一个页面的地址</returns>
public static string GetUrlReferrer()
{
string retVal = null;
try
{
retVal = HttpContext.Current.Request.UrlReferrer.ToString();
}
catch { }
if (retVal == null)
return "";
return retVal;
}
/// <summary>
/// 得到当前完整主机头
/// </summary>
/// <returns></returns>
public static string GetCurrentFullHost()
{
HttpRequest request = System.Web.HttpContext.Current.Request;
if (!request.Url.IsDefaultPort)
return string.Format("{0}:{1}", request.Url.Host, request.Url.Port.ToString());
return request.Url.Host;
}
/// <summary>
/// 得到主机头
/// </summary>
public static string GetHost()
{
return HttpContext.Current.Request.Url.Host;
}
/// <summary>
/// 得到主机名
/// </summary>
public static string GetDnsSafeHost()
{
return HttpContext.Current.Request.Url.DnsSafeHost;
}
/// <summary>
/// 获取当前请求的原始 URL(URL 中域信息之后的部分,包括查询字符串(如果存在))
/// </summary>
/// <returns>原始 URL</returns>
public static string GetRawUrl()
{
return HttpContext.Current.Request.RawUrl;
}
/// <summary>
/// 判断当前访问是否来自浏览器软件
/// </summary>
/// <returns>当前访问是否来自浏览器软件</returns>
public static bool IsBrowserGet()
{
string[] BrowserName = { "ie", "opera", "netscape", "mozilla", "konqueror", "firefox" };
string curBrowser = HttpContext.Current.Request.Browser.Type.ToLower();
for (int i = 0; i < BrowserName.Length; i++)
{
if (curBrowser.IndexOf(BrowserName[i]) >= 0)
return true;
}
return false;
}
/// <summary>
/// 判断是否来自搜索引擎链接
/// </summary>
/// <returns>是否来自搜索引擎链接</returns>
public static bool IsSearchEnginesGet()
{
if (HttpContext.Current.Request.UrlReferrer == null)
return false;
string[] SearchEngine = { "google", "yahoo", "msn", "baidu", "sogou", "sohu", "sina", "163", "lycos", "tom", "yisou", "iask", "soso", "gougou", "zhongsou" };
string tmpReferrer = HttpContext.Current.Request.UrlReferrer.ToString().ToLower();
for (int i = 0; i < SearchEngine.Length; i++)
{
if (tmpReferrer.IndexOf(SearchEngine[i]) >= 0)
return true;
}
return false;
}
/// <summary>
/// 获得当前完整Url地址
/// </summary>
/// <returns>当前完整Url地址</returns>
public static string GetUrl()
{
return HttpContext.Current.Request.Url.ToString();
}
/// <summary>
/// 获得当前页面的名称
/// </summary>
/// <returns>当前页面的名称</returns>
public static string GetPageName()
{
string[] urlArr = HttpContext.Current.Request.Url.AbsolutePath.Split('/');
return urlArr[urlArr.Length - 1].ToLower();
}
/// <summary>
/// 返回表单或Url参数的总个数
/// </summary>
/// <returns></returns>
public static int GetParamCount()
{
return HttpContext.Current.Request.Form.Count + HttpContext.Current.Request.QueryString.Count;
}
}
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