问题描述
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 http://svn.apache.org/viewvc/xmlgraphics/fop/trunk/examples/embedding/java/embedding/ExampleXML2PDF.java?view=markup 和 http://justcode.wordpress.com/2009/01/16/generare-pdf-con-struts2-fop-xml-e-xslt/
i'm using struts 2 and i'm trying to use fop to create a pdf file from xml and xsl. I develop my code in base this two url http://svn.apache.org/viewvc/xmlgraphics/fop/trunk/examples/embedding/java/embedding/ExampleXML2PDF.java?view=markup and http://justcode.wordpress.com/2009/01/16/generare-pdf-con-struts2-fop-xml-e-xslt/
这是我的代码,我正在尝试使用两种不同的方式
here's my code, i'm trying using two different ways
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\*****istrator\workspace\path\actions\forms\testeFOPxml.xml"; String xslPath = "C:\Users\*****istrator\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 "); System.out.println("Preparing..."); File baseDir = new File("C:\Users\*****istrator\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
and the struts.xml action
<action name="printDomAction2" class="com.somePackage.actions.JspToPdfTest" method="xmlToPdf"> --> <result type="stream" name="success"> <param name="contentType">application/pdf</param> <param name="contentDisposition">filename="dom.pdf"</param> <param name="bufferSize">1024</param> </result> <interceptor-ref name="defaultStack"/> </action> <action name="printDomAction" class="com.somePackage.actions.JspToPdfTest" method="doPrint"> <result type="stream" name="success"> <param name="contentType">application/pdf</param> <param name="contentDisposition">filename="dom.pdf"</param> <param name="bufferSize">1024</param> </result> <interceptor-ref name="defaultStack"/> </action>
最后是 xml2PdfManager.convertXML2PDF 方法:
finnaly the xml2PdfManager.convertXML2PDF method:
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:
in both situations i've got:
java.lang.NoSuchMethodError: org.apache.xmlgraphics.util.Service.providerNames(Ljava/lang/Class;)Ljava/util/Iterator;
当我执行 FopFactory.newInstance();
when i do the FopFactory.newInstance();
任何可以帮助我的建议都会很棒!
Any sugestion to help me woud be great!!
推荐答案
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.
I solved my problem! I had the xmlgraphics-commons-1.3 instead of the xmlgraphics-commons-1.5. It's strange because i used all the libraries that came with the fop bin.
顺便说一下,转换并在浏览器上显示pdf文件的代码如下:
By the way the code that convert and show on the browser the pdf file is the follow:
<action name="printDomAction" class="com.somePackage.actions.JspToPdfTest" method="xmlToPdf"> <result type="stream" name="success"> <param name="contentType">application/pdf</param> <param name="contentDisposition">filename="ResultXML2PDF.pdf"</param> <param name="bufferSize">1024</param> </result> <interceptor-ref name="defaultStack"/> </action>
方法
private InputStream inputStream; public String xmlToPdf() { try { System.out.println("FOP ExampleXML2PDF "); System.out.println("Preparing..."); // Setup directories File baseDir = new File("C:\Users\*****istrator\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!
Thanks everybody for the tips and the help!