如何将html页面导出为pdf格式？

Question

我必须为我的网站提供一些导出功能,例如CSV或PDF.是否有一个强大而免费的Java工具将HTML页面转换为PDF格式？

Answer 1

Flying Saucer API与iText PDF您一起使用可以将HTML内容转换为PDF.
以下示例可帮助您在一定程度上理解XHTML到PDF的转换.

示例使用Flying Saucer API:
您需要以下库:

• 核心renderer.jar
• iText的 - 2.0.8.jar

您可以在中找到这些资源flyingsaucer-R8.zip.

示例1:使用XML资源:

// if you have html source in hand, use it to generate document object
Document document = XMLResource.load( new ByteArrayInputStream( yourXhtmlContentAsString.getBytes() ) ).getDocument();

ITextRenderer renderer = new ITextRenderer();
renderer.setDocument( document, null );

renderer.layout();

String fileNameWithPath = outputFileFolder + "PDF-XhtmlRendered.pdf";
FileOutputStream fos = new FileOutputStream( fileNameWithPath );
renderer.createPDF( fos );
fos.close();
System.out.println( "File 1: '" + fileNameWithPath + "' created." );

示例2:使用XHTML直接输入到Document:

ITextRenderer renderer = new ITextRenderer();

// if you have html source in hand, use it to generate document object
renderer.setDocumentFromString( yourXhtmlContentAsString );
renderer.layout();

String fileNameWithPath = outputFileFolder + "PDF-FromHtmlString.pdf";
FileOutputStream fos = new FileOutputStream( fileNameWithPath );
renderer.createPDF( fos );
fos.close();

System.out.println( "File 2: '" + fileNameWithPath + "' created." );

示例使用iText API:
您需要以下库:

• 核心renderer.jar
• itextpdf-5.2.1.jar

您可以在此处找到这些资源.

示例3:使用HTML Worker:

com.itextpdf.text.Document document =
        new com.itextpdf.text.Document( com.itextpdf.text.PageSize.A4 );
String fileNameWithPath = outputFileFolder + "PDF-HtmlWorkerParsed.pdf";
FileOutputStream fos = new FileOutputStream( fileNameWithPath );
com.itextpdf.text.pdf.PdfWriter pdfWriter =
        com.itextpdf.text.pdf.PdfWriter.getInstance( document, fos );

document.open();

//**********************************************************
// if required, you can add document meta data
document.addAuthor( "Ravinder" );
//document.addCreator( creator );
document.addSubject( "HtmlWoker Parsed Pdf from iText" );
document.addCreationDate();
document.addTitle( "HtmlWoker Parsed Pdf from iText" );
//**********************************************************/

com.itextpdf.text.html.simpleparser.HTMLWorker htmlWorker =
        new com.itextpdf.text.html.simpleparser.HTMLWorker( document );
htmlWorker.parse( new StringReader( sb.toString() ) );

document.close();
fos.close();

System.out.println( "File 3: '" + fileNameWithPath + "' created." );