FopFactory.newInstance() 时出现 Fop 异常 [英] Fop exception when FopFactory.newInstance()
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\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
");
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
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\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！
Thanks everybody for the tips and the help!
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