我想用iTextSharp把下面的超文本标记语言转换成PDF,但不知道从哪里开始:
<style>
.headline{font-size:200%}
</style>
<p>
This <em>is </em>
<span class="headline" style="text-decoration: underline;">some</span>
<strong>sample<em> text</em></strong>
<span style="color: red;">!!!</span>
</p>
发布于 2018-09-20 13:39:58
我使用以下代码来创建PDF
protected void CreatePDF(Stream stream)
{
using (var document = new Document(PageSize.A4, 40, 40, 40, 30))
{
var writer = PdfWriter.GetInstance(document, stream);
writer.PageEvent = new ITextEvents();
document.Open();
// instantiate custom tag processor and add to `HtmlPipelineContext`.
var tagProcessorFactory = Tags.GetHtmlTagProcessorFactory();
tagProcessorFactory.AddProcessor(
new TableProcessor(),
new string[] { HTML.Tag.TABLE }
);
//Register Fonts.
XMLWorkerFontProvider fontProvider = new XMLWorkerFontProvider(XMLWorkerFontProvider.DONTLOOKFORFONTS);
fontProvider.Register(HttpContext.Current.Server.MapPath("~/Content/Fonts/GothamRounded-Medium.ttf"), "Gotham Rounded Medium");
CssAppliers cssAppliers = new CssAppliersImpl(fontProvider);
var htmlPipelineContext = new HtmlPipelineContext(cssAppliers);
htmlPipelineContext.SetTagFactory(tagProcessorFactory);
var pdfWriterPipeline = new PdfWriterPipeline(document, writer);
var htmlPipeline = new HtmlPipeline(htmlPipelineContext, pdfWriterPipeline);
// get an ICssResolver and add the custom CSS
var cssResolver = XMLWorkerHelper.GetInstance().GetDefaultCssResolver(true);
cssResolver.AddCss(CSSSource, "utf-8", true);
var cssResolverPipeline = new CssResolverPipeline(
cssResolver, htmlPipeline
);
var worker = new XMLWorker(cssResolverPipeline, true);
var parser = new XMLParser(worker);
using (var stringReader = new StringReader(HTMLSource))
{
parser.Parse(stringReader);
document.Close();
HttpContext.Current.Response.ContentType = "application /pdf";
if (base.View)
HttpContext.Current.Response.AddHeader("content-disposition", "inline;filename=\"" + OutputFileName + ".pdf\"");
else
HttpContext.Current.Response.AddHeader("content-disposition", "attachment;filename=\"" + OutputFileName + ".pdf\"");
HttpContext.Current.Response.Cache.SetCacheability(HttpCacheability.NoCache);
HttpContext.Current.Response.WriteFile(OutputPath);
HttpContext.Current.Response.End();
}
}
}
发布于 2016-09-21 13:15:39
这是我用作指南的链接。希望这能有所帮助!
Converting HTML to PDF using ITextSharp
protected void Page_Load(object sender, EventArgs e)
{
try
{
string strHtml = string.Empty;
//HTML File path -http://aspnettutorialonline.blogspot.com/
string htmlFileName = Server.MapPath("~") + "\\files\\" + "ConvertHTMLToPDF.htm";
//pdf file path. -http://aspnettutorialonline.blogspot.com/
string pdfFileName = Request.PhysicalApplicationPath + "\\files\\" + "ConvertHTMLToPDF.pdf";
//reading html code from html file
FileStream fsHTMLDocument = new FileStream(htmlFileName, FileMode.Open, FileAccess.Read);
StreamReader srHTMLDocument = new StreamReader(fsHTMLDocument);
strHtml = srHTMLDocument.ReadToEnd();
srHTMLDocument.Close();
strHtml = strHtml.Replace("\r\n", "");
strHtml = strHtml.Replace("\0", "");
CreatePDFFromHTMLFile(strHtml, pdfFileName);
Response.Write("pdf creation successfully with password -http://aspnettutorialonline.blogspot.com/");
}
catch (Exception ex)
{
Response.Write(ex.Message);
}
}
public void CreatePDFFromHTMLFile(string HtmlStream, string FileName)
{
try
{
object TargetFile = FileName;
string ModifiedFileName = string.Empty;
string FinalFileName = string.Empty;
/* To add a Password to PDF -http://aspnettutorialonline.blogspot.com/ */
TestPDF.HtmlToPdfBuilder builder = new TestPDF.HtmlToPdfBuilder(iTextSharp.text.PageSize.A4);
TestPDF.HtmlPdfPage first = builder.AddPage();
first.AppendHtml(HtmlStream);
byte[] file = builder.RenderPdf();
File.WriteAllBytes(TargetFile.ToString(), file);
iTextSharp.text.pdf.PdfReader reader = new iTextSharp.text.pdf.PdfReader(TargetFile.ToString());
ModifiedFileName = TargetFile.ToString();
ModifiedFileName = ModifiedFileName.Insert(ModifiedFileName.Length - 4, "1");
string password = "password";
iTextSharp.text.pdf.PdfEncryptor.Encrypt(reader, new FileStream(ModifiedFileName, FileMode.Append), iTextSharp.text.pdf.PdfWriter.STRENGTH128BITS, password, "", iTextSharp.text.pdf.PdfWriter.AllowPrinting);
//http://aspnettutorialonline.blogspot.com/
reader.Close();
if (File.Exists(TargetFile.ToString()))
File.Delete(TargetFile.ToString());
FinalFileName = ModifiedFileName.Remove(ModifiedFileName.Length - 5, 1);
File.Copy(ModifiedFileName, FinalFileName);
if (File.Exists(ModifiedFileName))
File.Delete(ModifiedFileName);
}
catch (Exception ex)
{
throw ex;
}
}
您可以下载示例文件。只需将您要转换的html
放在files
文件夹中并运行即可。它将自动生成pdf文件,并将其放置在相同的文件夹中。但在本例中,您可以在htmlFileName
变量中指定html路径。
https://stackoverflow.com/questions/25164257
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