Java 合并两个文档并转换为pdf-ApachePOI

我使用ApachePOIxWPFDocument和CTBody类成功地合并了两个文档。但是，当打开合并的文档时，它提供了一种不受支持的格式，因此我尝试将其保存为pdf格式，但同样的问题仍然存在

我正在使用

我试过这个-

该应用程序的主要目标是合并特定文件夹中的所有文档，并将其转换为pdf文件。以下是我迄今为止所做的工作

        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();

        appendBody(ct,ct1); // function merge two document to xdoc

        //saving as word document
        // the document is saved but getting this error when opening - image 1 below 
        FileOutputStream out = new FileOutputStream( new File("FL Divorce 223 Motion for Temp Family Law Order 2019_07.docx"));
        xdoc.write(out);
        out.close();

        // converting word to pdf
        FileInputStream str = new FileInputStream(new File("FL Divorce 223 Motion for Temp Family Law Order 2019_07.docx"));
        XWPFDocument document = new XWPFDocument(str);
        out = new FileOutputStream(new File("FL Divorce 223 Motion for Temp Family Law Order 2019_07.pdf"));
        PdfOptions options = PdfOptions.create();
        PdfConverter.getInstance().convert(document, out, options);
        out.close();

        File f = new File("FL Divorce 223 Motion for Temp Family Law Order 2019_07.docx");
        f.delete();

我也试过这个

        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();

        appendBody(ct,ct1); // function 

        //saving as word document
        // the document is saved but getting this error when opening - image 1 below 
        FileOutputStream out = new FileOutputStream( new File("FL Divorce 223 Motion for Temp Family Law Order 2019_07.pdf"));

        PdfOptions options = PdfOptions.create();
        PdfConverter.getInstance().convert(xdoc, out, options);
        out.close();

堆栈跟踪：

   fr.opensagres.poi.xwpf.converter.core.XWPFConverterException: java.lang.NullPointerException
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:515)
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: java.lang.NullPointerException
at   fr.opensagres.poi.xwpf.converter.core.utils.XWPFTableUtil.getGridColList(XWPFTableUtil.java:184)
at fr.opensagres.poi.xwpf.converter.core.utils.XWPFTableUtil.computeColWidths(XWPFTableUtil.java:117)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.visitTable(XWPFDocumentVisitor.java:970)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.visitBodyElements(XWPFDocumentVisitor.java:267)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.start(XWPFDocumentVisitor.java:215)
at fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:57)
... 40 more
fr.opensagres.poi.xwpf.converter.core.XWPFConverterException: java.lang.NullPointerException

fr.opensagres.poi.xwpf.converter.core.XWPFConverterException: org.apache.xmlbeans.impl.values.XmlValueDisconnectedException
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:510)
at trafficMan.MainApp$2.actionPerformed(MainApp.java:601)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$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.impl.values.XmlValueDisconnectedException
at org.apache.xmlbeans.impl.values.XmlObjectBase.check_orphaned(XmlObjectBase.java:1258)
at org.openxmlformats.schemas.wordprocessingml.x2006.main.impl.CTPImpl.getPPr(Unknown Source)
at org.apache.poi.xwpf.usermodel.XWPFParagraph.getStyleID(XWPFParagraph.java:222)
at   fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.visitBodyElements(XWPFDocumentVisitor.java:259)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.start(XWPFDocumentVisitor.java:215)
at fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:57)
... 40 more

---

这或将其直接保存为pdf都会使其在打开时成为无效文件。有人知道解决方案吗？

您的

appendBody

方法只是将多个Word文档体连接起来。根据

officeopenxml

的规范，这是不正确的。可能

MS Word

会容忍这种情况，并在打开文件时进行修复。但是其他遵循

officeopenxml

规范的库可能无法容忍这种情况。至少

fr.opensagres.poi.xwpf.converter.core

不允许这样做。合并两个

Word

文档不仅仅是将文档体连接起来。单个

Word

文件系统的其他部分（主题、样式、字体表、注释、编号、媒体等）也需要合并。除了

OpenOffice

或

LibreOffice

之外，我不知道有什么免费的

Java

库可以做到这一点。有没有其他方法可以解决这个问题？比如获取XWPFDocument的内容并将其转换为PDF格式，而不是直接转换？这是否回答了您的问题？

fr.opensagres.poi.xwpf.converter.core.XWPFConverterException: org.apache.xmlbeans.impl.values.XmlValueDisconnectedException
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:510)
at trafficMan.MainApp$2.actionPerformed(MainApp.java:601)
at javax.swing.AbstractButton.fireActionPerformed(Unknown Source)
at javax.swing.AbstractButton$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.impl.values.XmlValueDisconnectedException
at org.apache.xmlbeans.impl.values.XmlObjectBase.check_orphaned(XmlObjectBase.java:1258)
at org.openxmlformats.schemas.wordprocessingml.x2006.main.impl.CTPImpl.getPPr(Unknown Source)
at org.apache.poi.xwpf.usermodel.XWPFParagraph.getStyleID(XWPFParagraph.java:222)
at   fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.visitBodyElements(XWPFDocumentVisitor.java:259)
at fr.opensagres.poi.xwpf.converter.core.XWPFDocumentVisitor.start(XWPFDocumentVisitor.java:215)
at fr.opensagres.poi.xwpf.converter.pdf.PdfConverter.doConvert(PdfConverter.java:57)
... 40 more