我找到了解决方案。我已经使用Java的开放式办公API将文档转换为格式pdf。这是相同的代码。

System.out.println("starting...");

String oooExeFolder = "/usr/lib/openoffice/program";

XComponentContext xContext = BootstrapSocketConnector.bootstrap(oooExeFolder);

XMultiComponentFactory xMCF = xContext.getServiceManager();

Object oDesktop = xMCF.createInstanceWithContext("com.sun.star.frame.Desktop", xContext);

XComponentLoader xCLoader = (XComponentLoader) UnoRuntime.queryInterface(XComponentLoader.class, oDesktop);

System.out.println("loading ");

PropertyValue[] printerDesc = new PropertyValue[1];

printerDesc[0] = new PropertyValue();

printerDesc[0].Name = "PaperOrientation";

printerDesc[0].Value = PaperOrientation.LANDSCAPE;

// Create a document

XComponent document = xCLoader.loadComponentFromURL(loadUrl, "_blank", 0, printerDesc);

// Following property will convert doc into requested orientation.

XPrintable xPrintable = (XPrintable) UnoRuntime.queryInterface(XPrintable.class, document);

xPrintable.setPrinter(printerDesc);

PropertyValue[] conversionProperties = new PropertyValue[3];

conversionProperties[1] = new PropertyValue();

conversionProperties[1].Name = "FilterName";

conversionProperties[1].Value = "writer_pdf_Export";//

conversionProperties[0] = new PropertyValue();

conversionProperties[0].Name = "Overwrite ";

conversionProperties[0].Value = new Boolean(true);

System.out.println("closing");

XStorable xstorable = (XStorable) UnoRuntime.queryInterface(XStorable.class, document);

xstorable.storeToURL(storeUrl, conversionProperties);

System.out.println("closing");

XCloseable xcloseable = (XCloseable) UnoRuntime.queryInterface(XCloseable.class, document);

xcloseable.close(false);