Wiki source code of Development-PDF Generation
Version 9.1 by Theodore Petrosky on 2013/05/03 09:25
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6.1 | 1 | == Overview == |
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1.1 | 2 | |
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7.1 | 3 | You might want to also review the [[Returning a File>>Development-Examples-Return a File]] example. |
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1.1 | 4 | |
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6.1 | 5 | == Zak Burke's Example == |
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1.1 | 6 | |
| 7 | It is important to add "-Djava.awt.headless=true" to the "Additional Arguments" list to suppress a console window running WOBootstrap that will try to pop up and then fail to close, which seems to prevent the thread from returning, which causes the app to hang. | ||
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3.1 | 9 | {{code}} |
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1.1 | 10 | |
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3.1 | 11 | private ByteArrayOutputStream pdf() |
| 12 | { | ||
| 13 | // binary container for PDF | ||
| 14 | ByteArrayOutputStream out = null; | ||
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6.1 | 15 | |
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3.1 | 16 | try |
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1.1 | 17 | { |
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3.1 | 18 | // assume these exist |
| 19 | String xsl, xml; | ||
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6.1 | 20 | |
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3.1 | 21 | TransformerFactory transformerFactory = TransformerFactory.newInstance(); |
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6.1 | 22 | |
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3.1 | 23 | // configure FOP, apache's XML->PDF transformer |
| 24 | Fop fop = new Fop(MimeConstants.MIME_PDF); | ||
| 25 | out = new ByteArrayOutputStream(); | ||
| 26 | fop.setOutputStream(out); | ||
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6.1 | 27 | |
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3.1 | 28 | // configure XSLT transformer |
| 29 | Source xsltSrc = new StreamSource(new StringReader(xsl)); | ||
| 30 | Transformer transformer = transformerFactory.newTransformer(xsltSrc); | ||
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6.1 | 31 | |
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3.1 | 32 | // pipe XSL transformation through to FOP |
| 33 | Result res = new SAXResult(fop.getDefaultHandler()); | ||
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6.1 | 34 | |
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3.1 | 35 | // grab XML input stream |
| 36 | Source src = new StreamSource(new StringReader(xml)); | ||
| 37 | |||
| 38 | // Start the transformation and rendering process | ||
| 39 | transformer.transform(src, res); | ||
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1.1 | 40 | } |
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3.1 | 41 | catch (Exception e) |
| 42 | { | ||
| 43 | // actually, catch the following, one by one: | ||
| 44 | // TransformerConfigurationException | ||
| 45 | // FOPException | ||
| 46 | // TransformerFactoryConfigurationError | ||
| 47 | // TransformerException | ||
| 48 | } | ||
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6.1 | 49 | |
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3.1 | 50 | return out; |
| 51 | } | ||
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1.1 | 52 | |
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3.1 | 53 | public void appendToResponse(WOResponse response, WOContext context) |
| 54 | { | ||
| 55 | ByteArrayOutputStream out = pdf(); | ||
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6.1 | 56 | |
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3.1 | 57 | // without data, show the PDF page, which is just an error message. |
| 58 | if (out == null) | ||
| 59 | super.appendToResponse(response, context); | ||
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6.1 | 60 | |
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3.1 | 61 | // assume this exists |
| 62 | String filename; | ||
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6.1 | 63 | |
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3.1 | 64 | response.setHeader("application/pdf", "Content-Type"); |
| 65 | response.setHeader("" + out.size() + "", "Content-Length"); | ||
| 66 | response.setHeader("attachment;filename=" + filename, "Content-Disposition"); | ||
| 67 | response.setContent(new NSData(out.toByteArray())); | ||
| 68 | } | ||
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1.1 | 69 | |
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3.1 | 70 | {{/code}} |
| 71 | |||
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6.1 | 72 | == Related Links == |
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1.1 | 73 | |
| 74 | * [[FyTek Exe/DLL PDF Libraries>>http://www.fytek.com]] | ||
| 75 | * [[Java PDF Libraries>>http://schmidt.devlib.org/java/libraries-pdf.html]] | ||
| 76 | * [[Apache FOP>>http://xmlgraphics.apache.org/fop/]] | ||
| 77 | * [[Deirdre Saoirse Moen's FOP Example>>http://deirdre.net/posts/2005/06/webobjects-and-pdf-generation/]] | ||
| 78 | * [[JClass>>http://www.sitraka.com/software/jclass]] | ||
| 79 | * [[Etymon PJ>>http://www.etymon.com/pj/]] | ||
| 80 | * [[PDFLib>>http://www.pdflib.com/]] | ||
| 81 | * [[PD4ML>>http://pd4ml.com/]] | ||
| 82 | * [[iText>>http://www.lowagie.com/iText]] | ||
| 83 | * [[Hugi Karlmenn's iText Example>>http://hugi.karlmenn.is/page/webobjects]] | ||
| 84 | * [[XSL:FO Examples>>http://www.dpawson.co.uk/xsl/sect3/]] | ||
| 85 | * [[ReportMill>>http://www.reportmill.com/product/]] |