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javascript提交中文数据乱码
  escape(string)

cookie出现乱码

System.Web.HttpContext.Current.Server.UrlDecode(cookie.Value);
HttpCookie cookie = new System.Web.HttpCookie(varName, context.Server.UrlEncode(varValue.ToString()));

url出现乱码

System.Web.HttpContext.Current.Server.UrlDecode(val);
System.Web.HttpContext.Current.Server.UrlEncode(val);

创建文本文件

        System.IO.StreamWriter sw = System.IO.File.CreateText(factFile);
        sw.Close();
        sw = new System.IO.StreamWriter(factFile, false, System.Text.Encoding.GetEncoding("GB2312"));
        sw.Write(content);
        sw.Close();