/// <summary> /// 獲取html內(nèi)容，轉(zhuǎn)成PDF(注冊(cè))/// </summary> public void DownloadPDFByHTML(string html,string FileName) {WebClient wc = new WebClient(); // wc.Encoding = System.Text.Encoding.UTF8; //string htmlText = getWebContent(); string htmlText = html;//getWebContent(); string DataName = FileName;//下載文件名byte[] pdfFile =ConvertHtmlTextToPDF(htmlText);//如果需要保存到服務(wù)器 //string fileId = "/file_" + DateTime.Now.ToString("yyyyMMddHHmmss") + ".pdf"; //System.IO.File.WriteAllBytes(path + fileId, pdfFile); Response.ContentType = "application/octet-stream"; //通知瀏覽器下載文件 Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(DataName + ".pdf", System.Text.Encoding.UTF8)); Response.BinaryWrite(pdfFile);//文件下載二進(jìn)制流 Response.Flush(); Response.End(); 刪除服務(wù)器文件，通知下載成功之后，刪除 //FileInfo fi = new FileInfo(path + fileId); //if (fi.Exists) //{ // fi.Delete(); //} }/// <summary> /// 獲取網(wǎng)站內(nèi)容，包含了 HTML+CSS+JS /// </summary> /// <returns>String返回網(wǎng)頁(yè)信息</returns> public string getWebContent() { try { string INPATH = System.Web.HttpContext.Current.Server.MapPath("~/EmailTemplet/sa.html"); WebClient MyWebClient = new WebClient(); MyWebClient.Credentials = CredentialCache.DefaultCredentials; //獲取或設(shè)置用于向Internet資源的請(qǐng)求進(jìn)行身份驗(yàn)證的網(wǎng)絡(luò)憑據(jù) Byte[] pageData = MyWebClient.DownloadData(INPATH); //從指定網(wǎng)站下載數(shù)據(jù) string pageHtml = Encoding.UTF8.GetString(pageData); //如果獲取網(wǎng)站頁(yè)面采用的是GB2312，則使用這句 bool isBool =isMessyCode(pageHtml);//判斷使用哪種編碼 讀取網(wǎng)頁(yè)信息 if (!isBool) { string pageHtml1 = Encoding.UTF8.GetString(pageData); pageHtml = pageHtml1; } else { string pageHtml2 = Encoding.Default.GetString(pageData); pageHtml = pageHtml2; } return pageHtml; }catch (WebException webEx) { Console.WriteLine(webEx.Message.ToString()); return webEx.Message; } }/// <summary> /// 判斷是否有亂碼 /// </summary> /// <param name="txt"></param> /// <returns></returns> public static bool isMessyCode(string txt) { var bytes = Encoding.UTF8.GetBytes(txt); for (var i = 0; i < bytes.Length; i++) { if (i < bytes.Length - 3) if (bytes[i] == 239 && bytes[i + 1] == 191 && bytes[i + 2] == 189) { return true; } } return false; }/// <summary> /// 將Html文字 輸出到PDF檔里 /// </summary> /// <param name="htmlText"></param> /// <returns></returns> public static byte[] ConvertHtmlTextToPDF(string htmlText) { if (string.IsNullOrEmpty(htmlText)) { return null; } //避免當(dāng)htmlText無(wú)任何html tag標(biāo)簽的純文字時(shí)，轉(zhuǎn)PDF時(shí)會(huì)掛掉，所以一律加上<p>標(biāo)簽 //htmlText = "<p>" + htmlText + "</p>"; MemoryStream outputStream = new MemoryStream();//要把PDF寫到哪個(gè)串流 byte[] data = Encoding.UTF8.GetBytes(htmlText);//字串轉(zhuǎn)成byte[] MemoryStream msInput = new MemoryStream(data); Document doc = new Document(PageSize.A4.Rotate(), 1, 1, 1, 1);//要寫PDF的文件，建構(gòu)子沒(méi)填的話預(yù)設(shè)直式A4（括號(hào)內(nèi)不填寫值默認(rèn)是A4縱向，否則是橫向） PdfWriter writer = PdfWriter.GetInstance(doc, outputStream); //指定文件預(yù)設(shè)開(kāi)檔時(shí)的縮放為100% PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, doc.PageSize.Height, 1f); //開(kāi)啟Document文件 doc.Open(); doc.Add(iTextSharp.text.PageSize.A5.Rotate()); //使用XMLWorkerHelper把Html parse到PDF檔里 XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8, new UnicodeFontFactory()); //XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8);//將pdfDest設(shè)定的資料寫到PDF檔 PdfAction action = PdfAction.GotoLocalPage(1, pdfDest, writer); writer.SetOpenAction(action); doc.Close(); msInput.Close(); outputStream.Close(); //回傳PDF檔案 return outputStream.ToArray();}//設(shè)置字體類 (如果字體設(shè)置有問(wèn)題，只能顯示英文) public class UnicodeFontFactory : FontFactoryImp { private static readonly string arialFontPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "arialuni.ttf");//arial unicode MS是完整的unicode字型。 private static readonly string FontTypePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.Fonts), "STKAITI.TTF");public override Font GetFont(string fontname, string encoding, bool embedded, float size, int style, BaseColor color, bool cached) { BaseFont bfChiness = BaseFont.CreateFont(@"C:\\WINDOWS\\FONTS\\STKAITI.TTF", BaseFont.IDENTITY_H, BaseFont.NOT_EMBEDDED); //可用Arial或標(biāo)楷體，自己選一個(gè) BaseFont baseFont = BaseFont.CreateFont(FontTypePath, BaseFont.IDENTITY_H, BaseFont.EMBEDDED); return new Font(bfChiness, size, style, color); } }轉(zhuǎn)載至：https://www.cnblogs.com/zhurunlai/p/7193201.html

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轉(zhuǎn)載于:https://www.cnblogs.com/lijianli/p/9541411.html

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