1、过滤文本中的HTML标签
1 /// <summary> 2 /// 清除文本中Html的标签 3 /// </summary> 4 /// <param name="Content"></param> 5 /// <returns></returns> 6 public static string ClearHtml(string Content) 7 { 8 Content = ReplaceHtml("&#[^>]*;", "", Content); 9 Content = ReplaceHtml("</?marquee[^>]*>", "", Content); 10 Content = ReplaceHtml("</?object[^>]*>", "", Content); 11 Content = ReplaceHtml("</?param[^>]*>", "", Content); 12 Content = ReplaceHtml("</?embed[^>]*>", "", Content); 13 Content = ReplaceHtml("</?table[^>]*>", "", Content); 14 Content = ReplaceHtml(" ", "", Content); 15 Content = ReplaceHtml("</?tr[^>]*>", "", Content); 16 Content = ReplaceHtml("</?th[^>]*>", "", Content); 17 Content = ReplaceHtml("</?p[^>]*>", "", Content); 18 Content = ReplaceHtml("</?a[^>]*>", "", Content); 19 Content = ReplaceHtml("</?img[^>]*>", "", Content); 20 Content = ReplaceHtml("</?tbody[^>]*>", "", Content); 21 Content = ReplaceHtml("</?li[^>]*>", "", Content); 22 Content = ReplaceHtml("</?span[^>]*>", "", Content); 23 Content = ReplaceHtml("</?div[^>]*>", "", Content); 24 Content = ReplaceHtml("</?th[^>]*>", "", Content); 25 Content = ReplaceHtml("</?td[^>]*>", "", Content); 26 Content = ReplaceHtml("</?script[^>]*>", "", Content); 27 Content = ReplaceHtml("(javascript|jscript|vbscript|vbs):", "", Content); 28 Content = ReplaceHtml("on(mouse|exit|error|click|key)", "", Content); 29 Content = ReplaceHtml("<\?xml[^>]*>", "", Content); 30 Content = ReplaceHtml("<\/?[a-z]+:[^>]*>", "", Content); 31 Content = ReplaceHtml("</?font[^>]*>", "", Content); 32 Content = ReplaceHtml("</?b[^>]*>", "", Content); 33 Content = ReplaceHtml("</?u[^>]*>", "", Content); 34 Content = ReplaceHtml("</?i[^>]*>", "", Content); 35 Content = ReplaceHtml("</?strong[^>]*>", "", Content); 36 37 Content = Regex.Replace(Content.Trim(), "\s+", " "); 38 string clearHtml = Content; 39 return clearHtml; 40 } 41 42 /// <summary> 43 /// 清除文本中的Html标签 44 /// </summary> 45 /// <param name="patrn">要替换的标签正则表达式</param> 46 /// <param name="strRep">替换为的内容</param> 47 /// <param name="content">要替换的内容</param> 48 /// <returns></returns> 49 private static string ReplaceHtml(string patrn, string strRep, string content) 50 { 51 if (string.IsNullOrEmpty(content)) 52 { 53 content = ""; 54 } 55 Regex rgEx = new Regex(patrn, RegexOptions.IgnoreCase); 56 string strTxt = rgEx.Replace(content, strRep); 57 return strTxt; 58 }
2、页面文字长度按像素截取
1 public static string Cutstring(object obj, int pixelLength) 2 { 3 string value = obj == null ? "" : obj.ToString(); 4 if (pixelLength > 0) 5 { 6 int maxLength = Convert.ToInt32(Math.Floor(pixelLength / 100.0 * 8)); 7 int keepLength = maxLength == 0 ? maxLength : maxLength - 1; 8 if (value.Length > maxLength) 9 { 10 string endString = "..."; 11 value = value.Substring(0, keepLength) + endString; 12 } 13 } 14 return value; 15 }
3、FileUpload上传文件
//使用方法 string StudentPhoto = ""; bool UploadResult = false; if (FileUp.HasFile) { StudentPhoto = UploadFile(FileUp, "UpLoad/System/StudentPhoto", new string[] { ".gif", ".png",".jpg" }, 2, out UploadResult); if (!UploadResult) { //上传不成功操作 string UpMsg = "$('#IsRefresh').val('TwoNotice');art.dialog({title:'提示',icon:'warning',content:'" + StudentPhoto + "'});"; Page.ClientScript.RegisterStartupScript(ClientScript.GetType(), "upmsg", UpMsg, true); } else { //上传成功后操作 } /// <summary> /// 指定上传控件到指定路径 /// </summary> /// <param name="Upload1">上传控件</param> /// <param name="UpPath">上传路径,对于站点路径,如:UpLoad/System</param> /// <param name="FileType">文件后缀{ ".gif", ".png", ".bmp", ".jpg" }</param> /// <param name="FileSize">上传文件大小单位MB</param> /// <param name="UploadMessage">是否上传成功</param> /// <returns>上传成功返回路径，失败返回原因</returns> protected string UploadFile(FileUpload Upload1, string UpPath, string[] FileType, double FileSize, out bool UploadMessage) { UploadMessage = false; string UpFile = ""; string FileMessage = ""; string strName = Upload1.PostedFile.FileName; double filesize = Convert.ToDouble(Upload1.PostedFile.ContentLength) / 1024 / 1024; string Extensions = ""; if (strName != "") { string fileExtension = System.IO.Path.GetExtension(Upload1.FileName).ToLower(); string newName = Guid.NewGuid().ToString(); string juedui = Server.MapPath("~/" + UpPath + "/"); string newFileName = juedui + newName + fileExtension; if (Upload1.HasFile) { //验证文件格式 string[] allowedExtensions = FileType; bool FileEx = false; for (int j = 0; j < allowedExtensions.Length; j++) { Extensions += allowedExtensions[j] + ";"; if (fileExtension == allowedExtensions[j]) { FileEx = true; } } if (!FileEx) { FileMessage += "文件上传失败，错误原因:按指定格式上传(" + Extensions + ");"; } //验证文件大小 if (filesize > FileSize) { FileMessage += string.Format("请按照指定文件大小上传，文件限定{0}MB,当前文件[{1}]共{2}MB", FileSize, strName, String.Format("{0:F}", filesize)); } if (FileMessage == "") { try { if (!Directory.Exists(juedui)) { Directory.CreateDirectory(juedui); } Upload1.PostedFile.SaveAs(newFileName); UpFile = "../" + UpPath + "/" + newName + fileExtension; UploadMessage = true; } catch (Exception EX) { UploadMessage = false; FileMessage += EX.Message; } } else { UploadMessage = false; } } } else { FileMessage += "照片文件选择已过期，请重新选择；"; } if (UploadMessage) return UpFile; else return FileMessage; }
4、异步上传服务端文件保存
HttpPostedFile file = Request.Files["Filedata"];//上传文件对象 string uploadPath = Server.MapPath("~/UpLoad/QueAttach/"); if (file != null) { if (!Directory.Exists(uploadPath)) { Directory.CreateDirectory(uploadPath); } string ExtName = Path.GetExtension(file.FileName); string FileName= file.FileName .Replace(ExtName,""); string fileName = "【" + FileName + "】" + DateTime.Now.ToString("yyyyMMddHHmmss") + ExtName; file.SaveAs(uploadPath + fileName); //下面这句代码缺少的话，上传成功后上传队列的显示不会自动消失 Response.Write(FileName); } else { Response.Write("0"); }
5、POST数据提交
/// <summary> /// POST提交数据接收字符json /// </summary> /// <param name="url">远程服务器路径</param> /// <param name="postData">提交数据</param> /// <returns>接收数据</returns> protected static string PostData(string url, byte[] postData) { HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(url); myRequest.Method = "POST"; myRequest.ContentType = "application/x-www-form-urlencoded"; myRequest.ContentLength = postData.Length; Stream newStream = myRequest.GetRequestStream(); // Send the data. newStream.Write(postData, 0, postData.Length); newStream.Close(); // Get response HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse(); StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8); return reader.ReadToEnd(); } //调用方法 /// <summary> /// 获取直播录制信息 /// </summary> /// <param name="webcastId">直播ID</param> /// <returns>录制视频</returns> public RecordInfo Get_Live_Transcribe(string webcastId) { RecordInfo jsonOut = null; try { string Url = "http://"; string LocalData = "loginName=admin%40ruiyoutech.com&password=ruiyoutech&sec=&webcastId=" + webcastId; string strJsonInput = PostData(Url, System.Text.Encoding.Default.GetBytes(LocalData)); JavaScriptSerializer serializer = new JavaScriptSerializer(); jsonOut = serializer.Deserialize<RecordInfo>(strJsonInput); } catch(Exception e) { } return jsonOut; }
6、获取url字符串中指定参数值
var urlRegex = System.Text.RegularExpressions.Regex.Match(visit.rf, @"(?:^|?|&)ssp=(.*)(?:&|$)"); ssprf = urlRegex.Groups[1].ToString();