FopFactory.newInstance（）时Fopexception

我正在使用struts 2，我正在尝试使用fop从xml和xsl创建一个pdf文件。 我在这两个url中开发我的代码http://svn.apache.org/viewvc/xmlgraphics/fop/trunk/examples/embedding/java/embedding/ExampleXML2PDF.java?view=markup和http：//justcode.wordpress的.com / 2009/01/16 / generare-PDF-CON-struts2的-FOP-XML-E-XSLT /

这是我的代码，我正在尝试使用两种不同的方式

public class JspToPdfTest extends ActionSupport{ private InputStream inputStream; private Xml2PdfManager xml2PdfManager; public InputStream getInputStream() { return inputStream; } public void setInputStream(InputStream inputStream) { this.inputStream = inputStream; } public JspToPdfTest(){ xml2PdfManager = new Xml2PdfManager(); } public String doPrint() { String xml = "C:\\Users\\Administrator\\workspace\\path\\actions\\forms\\testeFOPxml.xml"; String xslPath = "C:\\Users\\Administrator\\workspace\\path\\actions\\forms\\xml2fo.xsl"; InputStream xmlInput = new ByteArrayInputStream(xml.getBytes()); ByteArrayOutputStream out = (ByteArrayOutputStream) xml2PdfManager.convertXML2PDF(xmlInput, new File(xslPath)); inputStream = new ByteArrayInputStream(out.toByteArray()); return SUCCESS; } public String xmlToPdf() { try { System.out.println("FOP ExampleXML2PDF\n"); System.out.println("Preparing..."); File baseDir = new File("C:\\Users\\Administrator\\workspace\\path\\actions\\forms\\"); File outDir = new File(baseDir, "out"); outDir.mkdirs(); File xmlfile = new File(baseDir, "testeFOPxml.xml"); File xsltfile = new File(baseDir, "xml2fo.xsl"); File pdffile = new File(outDir, "ResultXML2PDF.pdf"); final FopFactory fopFactory = FopFactory.newInstance(); FOUserAgent foUserAgent = fopFactory.newFOUserAgent(); OutputStream out = new java.io.FileOutputStream(pdffile); out = new java.io.BufferedOutputStream(out); try { Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, foUserAgent, out); TransformerFactory factory = TransformerFactory.newInstance(); Transformer transformer = factory.newTransformer(new StreamSource(xsltfile)); transformer.setParameter("versionParam", "2.0"); Source src = new StreamSource(xmlfile); Result res = new SAXResult(fop.getDefaultHandler()); transformer.transform(src, res); } finally { out.close(); } } catch (Exception e) { e.printStackTrace(System.err); System.exit(-1); } return SUCCESS; } } 

和struts.xml动作

  -->  application/pdf filename="dom.pdf" 1024      application/pdf filename="dom.pdf" 1024    

finnaly xml2PdfManager.convertXML2PDF方法：

 public OutputStream convertXML2PDF(InputStream xml, File xsl) { ByteArrayOutputStream out = new ByteArrayOutputStream(); FopFactory fopFactory = FopFactory.newInstance(); TransformerFactory tFactory = TransformerFactory.newInstance(); try { Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF, out); Source src = new StreamSource(xml); Source xsltSrc = new StreamSource(xsl); Transformer transformer = tFactory.newTransformer(xsltSrc); Result res = new SAXResult(fop.getDefaultHandler()); transformer.transform(src, res); } catch (Exception e) { e.printStackTrace(System.err); } return out; } 

在这两种情况下我都有：

 java.lang.NoSuchMethodError: org.apache.xmlgraphics.util.Service.providerNames(Ljava/lang/Class;)Ljava/util/Iterator; 

当我做FopFactory.newInstance（）;

任何帮助我的消化都会很棒!!

Answer 1

我解决了我的问题！ 我有xmlgraphics-commons-1.3而不是xmlgraphics-commons-1.5。 这很奇怪，因为我使用了fop bin附带的所有库。

顺便说一句，在浏览器上转换和显示pdf文件的代码如下：

   application/pdf filename="ResultXML2PDF.pdf" 1024    

和方法

 private InputStream inputStream; public String xmlToPdf() { try { System.out.println("FOP ExampleXML2PDF\n"); System.out.println("Preparing..."); // Setup directories File baseDir = new File("C:\\Users\\Administrator\\workspace\\path\\actions\\forms\\"); File outDir = new File(baseDir, "out"); outDir.mkdirs(); // Setup input and output files File xmlfile = new File(baseDir, "testeFOPxml.xml"); File xsltfile = new File(baseDir, "xml2fo.xsl"); File pdffile = new File(outDir, "ResultXML2PDF.pdf"); System.out.println("Input: XML (" + xmlfile + ")"); System.out.println("Stylesheet: " + xsltfile); System.out.println("Output: PDF (" + pdffile + ")"); System.out.println(); System.out.println("Transforming..."); // configure fopFactory as desired final FopFactory fopFactory = FopFactory.newInstance(); FOUserAgent foUserAgent = fopFactory.newFOUserAgent(); // configure foUserAgent as desired ByteArrayOutputStream out = new ByteArrayOutputStream(); TransformerFactory tFactory = TransformerFactory.newInstance(); Fop fop = fopFactory.newFop(MimeConstants.MIME_PDF,foUserAgent, out); //Setup input Source src = new StreamSource(xmlfile); //Setup Transformer Source xsltSrc = new StreamSource(xsltfile); Transformer transformer = tFactory.newTransformer(xsltSrc); //Make sure the XSL transformation's result is piped through to FOP Result res = new SAXResult(fop.getDefaultHandler()); transformer.transform(src, res); System.out.println("Success!"); ByteArrayOutputStream baos = out; inputStream = new ByteArrayInputStream(baos.toByteArray()); } catch (Exception e) { e.printStackTrace(System.err); System.exit(-1); } return SUCCESS; } 

感谢大家的提示和帮助！