Request操作类

using System;

using System.Web;



namespace wlz.Common

{

    /// <summary>

    /// Request操作类

    /// </summary>

    public class wlzRequest

    {

        /// <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>

        /// <returns></returns>

        public static string GetHost()

        {

            return HttpContext.Current.Request.Url.Host;

        }





        /// <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>

        /// 获得指定Url参数的值

        /// </summary>

        /// <param name="strName">Url参数</param>

        /// <returns>Url参数的值</returns>

        public static string GetQueryString(string strName)

        {

            return GetQueryString(strName, false);

        }



        /// <summary>

        /// 获得指定Url参数的值

        /// </summary> 

        /// <param name="strName">Url参数</param>

        /// <param name="sqlSafeCheck">是否进行SQL安全检查</param>

        /// <returns>Url参数的值</returns>

        public static string GetQueryString(string strName, bool sqlSafeCheck)

        {

            if (HttpContext.Current.Request.QueryString[strName] == null)

                return "";



            if (sqlSafeCheck && !Utils.IsSafeSqlString(HttpContext.Current.Request.QueryString[strName]))

                return "unsafe string";



            return HttpContext.Current.Request.QueryString[strName];

        }



        /// <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;

        }





        /// <summary>

        /// 获得指定表单参数的值

        /// </summary>

        /// <param name="strName">表单参数</param>

        /// <returns>表单参数的值</returns>

        public static string GetFormString(string strName)

        {

            return GetFormString(strName, false);

        }



        /// <summary>

        /// 获得指定表单参数的值

        /// </summary>

        /// <param name="strName">表单参数</param>

        /// <param name="sqlSafeCheck">是否进行SQL安全检查</param>

        /// <returns>表单参数的值</returns>

        public static string GetFormString(string strName, bool sqlSafeCheck)

        {

            if (HttpContext.Current.Request.Form[strName] == null)

                return "";



            if (sqlSafeCheck && !Utils.IsSafeSqlString(HttpContext.Current.Request.Form[strName]))

                return "unsafe string";



            return HttpContext.Current.Request.Form[strName];

        }



        /// <summary>

        /// 获得Url或表单参数的值, 先判断Url参数是否为空字符串, 如为True则返回表单参数的值

        /// </summary>

        /// <param name="strName">参数</param>

        /// <returns>Url或表单参数的值</returns>

        public static string GetString(string strName)

        {

            return GetString(strName, false);

        }



        /// <summary>

        /// 获得Url或表单参数的值, 先判断Url参数是否为空字符串, 如为True则返回表单参数的值

        /// </summary>

        /// <param name="strName">参数</param>

        /// <param name="sqlSafeCheck">是否进行SQL安全检查</param>

        /// <returns>Url或表单参数的值</returns>

        public static string GetString(string strName, bool sqlSafeCheck)

        {

            if ("".Equals(GetQueryString(strName)))

                return GetFormString(strName, sqlSafeCheck);

            else

                return GetQueryString(strName, sqlSafeCheck);

        }



        /// <summary>

        /// 获得指定Url参数的int类型值

        /// </summary>

        /// <param name="strName">Url参数</param>

        /// <returns>Url参数的int类型值</returns>

        public static int GetQueryInt(string strName)

        {

            return Utils.StrToInt(HttpContext.Current.Request.QueryString[strName], 0);

        }





        /// <summary>

        /// 获得指定Url参数的int类型值

        /// </summary>

        /// <param name="strName">Url参数</param>

        /// <param name="defValue">缺省值</param>

        /// <returns>Url参数的int类型值</returns>

        public static int GetQueryInt(string strName, int defValue)

        {

            return Utils.StrToInt(HttpContext.Current.Request.QueryString[strName], defValue);

        }





        /// <summary>

        /// 获得指定表单参数的int类型值

        /// </summary>

        /// <param name="strName">表单参数</param>

        /// <param name="defValue">缺省值</param>

        /// <returns>表单参数的int类型值</returns>

        public static int GetFormInt(string strName, int defValue)

        {

            return Utils.StrToInt(HttpContext.Current.Request.Form[strName], defValue);

        }



        /// <summary>

        /// 获得指定Url或表单参数的int类型值, 先判断Url参数是否为缺省值, 如为True则返回表单参数的值

        /// </summary>

        /// <param name="strName">Url或表单参数</param>

        /// <param name="defValue">缺省值</param>

        /// <returns>Url或表单参数的int类型值</returns>

        public static int GetInt(string strName, int defValue)

        {

            if (GetQueryInt(strName, defValue) == defValue)

                return GetFormInt(strName, defValue);

            else

                return GetQueryInt(strName, defValue);

        }



        /// <summary>

        /// 获得指定Url参数的float类型值

        /// </summary>

        /// <param name="strName">Url参数</param>

        /// <param name="defValue">缺省值</param>

        /// <returns>Url参数的int类型值</returns>

        public static float GetQueryFloat(string strName, float defValue)

        {

            return Utils.StrToFloat(HttpContext.Current.Request.QueryString[strName], defValue);

        }





        /// <summary>

        /// 获得指定表单参数的float类型值

        /// </summary>

        /// <param name="strName">表单参数</param>

        /// <param name="defValue">缺省值</param>

        /// <returns>表单参数的float类型值</returns>

        public static float GetFormFloat(string strName, float defValue)

        {

            return Utils.StrToFloat(HttpContext.Current.Request.Form[strName], defValue);

        }

        

        /// <summary>

        /// 获得指定Url或表单参数的float类型值, 先判断Url参数是否为缺省值, 如为True则返回表单参数的值

        /// </summary>

        /// <param name="strName">Url或表单参数</param>

        /// <param name="defValue">缺省值</param>

        /// <returns>Url或表单参数的int类型值</returns>

        public static float GetFloat(string strName, float defValue)

        {

            if (GetQueryFloat(strName, defValue) == defValue)

                return GetFormFloat(strName, defValue);

            else

                return GetQueryFloat(strName, defValue);

        }



        /// <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 = HttpContext.Current.Request.ServerVariables["REMOTE_ADDR"];

            if (string.IsNullOrEmpty(result))

                result = HttpContext.Current.Request.ServerVariables["HTTP_X_FORWARDED_FOR"];



            if (string.IsNullOrEmpty(result))

                result = HttpContext.Current.Request.UserHostAddress;



            if (string.IsNullOrEmpty(result) || !Utils.IsIP(result))

                return "127.0.0.1";



            return result;

        }



        /// <summary>

        /// 保存用户上传的文件

        /// </summary>

        /// <param name="path">保存路径</param>

        public static void SaveRequestFile(string path)

        {

            if (HttpContext.Current.Request.Files.Count > 0)

            {

                HttpContext.Current.Request.Files[0].SaveAs(path);

            }

        }

    }

}