问题
Instead of appending the content of a document to CTBody Class, I am transfering all the data from a word document to an empty document using XWPFDocument class but I am getting an error as below. the error is pointed on XWPFDocument doc when I convert it to pdf
fr.opensagres.poi.xwpf.converter.core.XWPFConverterException: org.apache.xmlbeans.XmlException: error: Premature end of file.
FileInputStream fis = new FileInputStream("1.docx");
FileInputStream fis1 = new FileInputStream("2.docx");
XWPFDocument xdoc = new XWPFDocument(OPCPackage.open(fis));
XWPFDocument xdoc1 = new XWPFDocument(OPCPackage.open(fis1));
CTBody ct = xdoc.getDocument().getBody();
CTBody ct1 = xdoc1.getDocument().getBody();
XWPFDocument doc = new XWPFDocument();
doc.createStyles();
doc.getDocument().addNewBody().set(ct);
doc.getDocument().addNewBody().set(ct1);
FileOutputStream out = new FileOutputStream( new File("test.pdf"));
PdfOptions opt = PdfOptions.create();
PdfConverter.getInstance().convert(doc, out, opt);
doc.write(out);
doc.close();
out.close();
this is the stacktrace.
fr.opensagres.poi.xwpf.converter.core.XWPFConverterException: org.apache.xmlbeans.XmlException: error: Premature end of file.
at fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:71)
at fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:39)
at fr.opensagres.poi.xwpf.converter.core.AbstractXWPFConverter.convert(AbstractXWPFConverter.java:46)
at trafficMan.MainApp.mergeDocument(MainApp.java:513)
at trafficMan.MainApp$2.actionPerformed(MainApp.java:609)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$Handler.actionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.fireActionPerformed(Unknown Source)
at javax.swing.DefaultButtonModel.setPressed(Unknown Source)
at javax.swing.plaf.basic.BasicButtonListener.mouseReleased(Unknown Source)
at java.awt.Component.processMouseEvent(Unknown Source)
at javax.swing.JComponent.processMouseEvent(Unknown Source)
at java.awt.Component.processEvent(Unknown Source)
at java.awt.Container.processEvent(Unknown Source)
at java.awt.Component.dispatchEventImpl(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
at java.awt.Container.dispatchEventImpl(Unknown Source)
at java.awt.Window.dispatchEventImpl(Unknown Source)
at java.awt.Component.dispatchEvent(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$500(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.awt.EventQueue$4.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: org.apache.xmlbeans.XmlException: error: Premature end of file.
at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3448)
at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1272)
at org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1259)
at org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderBase.java:345)
at org.openxmlformats.schemas.wordprocessingml.x2006.main.StylesDocument$Factory.parse(Unknown Source)
at org.apache.poi.xwpf.usermodel.XWPFDocument.getStyle(XWPFDocument.java:557)
at fr.opensagres.poi.xwpf.converter.core.styles.XWPFStylesDocument.<init>(XWPFStylesDocument.java:196)
at fr.opensagres.poi.xwpf.converter.core.styles.XWPFStylesDocument.<init>(XWPFStylesDocument.java:190)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.createStylesDocument(XWPFDocumentVisitor.java:182)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.<init>(XWPFDocumentVisitor.java:175)
at fr.opensagres.poi.xwpf.converter.pdf.internal.PdfMapper.<init>(PdfMapper.java:155)
at fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:56)
... 40 more
Caused by: org.xml.sax.SAXParseException; systemId: file://; lineNumber: 1; columnNumber: 1; Premature end of file.
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(Unknown Source)
at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(Unknown Source)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
at org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3422)
... 51 more
回答1:
Even this code does nothing else than simply appending multiple document bodies. It first creates a new XWPFDocument which contains one CTBody already. Then it uses XWPFDocument.getDocument() which gets the org.openxmlformats.schemas.wordprocessingml.x2006.main.CTDocument1 of that new XWPFDocument and then it adds two new CTBody elements to that. After that the CTDocument1 will have three CTBody elements.
But according to Office Open XML a CT_Document can only have one element of type CT_Body.
The following XML Schema fragment defines the contents of the CT_Document element:
<complexType name="CT_Document">
<complexContent>
<extension base="CT_DocumentBase">
<sequence>
<element name="body" type="CT_Body" minOccurs="0" maxOccurs="1"/>
</sequence>
</extension>
</complexContent>
</complexType>
As you see: CT_Body occurs 1 times max.
Merging two Word documents is more than simply concatenating the document bodies. All the elements in the bodies needs to be merged in one CTBody element. And there are other parts of the single Word file systems (themes, styles, font table, comments, numbering, media, ...) which also needs merged. I do not know any free Java library except OpenOffice or LibreOffice which can do this properly.
来源：https://stackoverflow.com/questions/60018163/premature-end-of-file-xwpfdocument-to-pdfconverter