using iTextSharp.text; using iTextSharp.text.pdf; using System; using System.Collections.Generic; using System.IO; using System.Linq; using System.Text; using System.Web; using System.Web.UI; using System.Web.UI.WebControls; using System.Net; using iTextSharp.tool.xml; namespace WebApplication1 { public partial class Default : System.Web.UI.Page { protected void Page_Load(object sender, EventArgs e) { string htmlText = "<html><body><div>testtest</div></body></html>"; //避免当htmlText无任何html tag标签的纯文字时，转PDF时会挂掉，所以一律加上<p>标签 htmlText = "<p>" + htmlText + "</p>"; MemoryStream outputStream = new MemoryStream();//要把PDF写到哪个串流 byte[] data = Encoding.UTF8.GetBytes(htmlText);//字串转成byte[] MemoryStream msInput = new MemoryStream(data); Document doc = new Document();//要写PDF的文件，建构子没填的话预设直式A4 PdfWriter writer = PdfWriter.GetInstance(doc, outputStream); //指定文件预设开档时的缩放为100% PdfDestination pdfDest = new PdfDestination(PdfDestination.XYZ, 0, doc.PageSize.Height, 1f); //开启Document文件 doc.Open(); //使用XMLWorkerHelper把Html parse到PDF档里 // XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8, new UnicodeFontFactory()); XMLWorkerHelper.GetInstance().ParseXHtml(writer, doc, msInput, null, Encoding.UTF8); //将pdfDest设定的资料写到PDF档 PdfAction action = PdfAction.GotoLocalPage(1, pdfDest, writer); writer.SetOpenAction(action); doc.Close(); msInput.Close(); outputStream.Close(); //回传PDF档案 var bytes = outputStream.ToArray(); var ret = Convert.ToBase64String(bytes); try { string strbase64 = ret; strbase64 = strbase64.Replace(' ', '+'); System.IO.MemoryStream stream = new System.IO.MemoryStream(Convert.FromBase64String(strbase64)); System.IO.FileStream fs = new System.IO.FileStream("D:\证件1.pdf", System.IO.FileMode.OpenOrCreate, System.IO.FileAccess.Write); byte[] b = stream.ToArray(); //byte[] b = stream.GetBuffer(); fs.Write(b, 0, b.Length); fs.Close(); } catch (Exception ex) { } } } }