Java 中如何将 XML 转换为 PDF，并实现 DOC 到 PDF 的转换？

import com.sun.star.uno.xcomponentcontext;
import com.sun.star.lib.uno.helper.factory;
import com.sun.star.frame.xcomponentloader;
import com.sun.star.beans.propertyvalue;
import com.sun.star.lang.xmulticomponentfactory;
import com.sun.star.lang.xcomponent;

// ...

openofficeconnection connection = new openofficeconnection( ... );
xmulticomponentfactory servicemanager = connection.getservicemanager();

xcomponentcontext xcontext = servicemanager.createinstancewithcontext(
    "com.sun.star.frame.desktop", xcontext);

xcomponentloader xcomponentloader = (xcomponentloader)
    factory.createcomponent("com.sun.star.frame.desktop", xcontext);

url fileurl = new url("file:///path/to/file.doc");
propertyvalue[] loadproperties = new propertyvalue[1];
loadproperties[0] = new propertyvalue();
loadproperties[0].name = "hidden";
loadproperties[0].value = true;

xcomponent xcomponent = xcomponentloader.loadcomponentfromurl(
    fileurl.tostring(), "_blank", 0, loadproperties);

PropertyValue[] pdfProperties = new PropertyValue[1];
pdfProperties[0] = new PropertyValue();
pdfProperties[0].Name = "FilterName";
pdfProperties[0].Value = "writer_pdf_Export";

xComponent.storeAsURL("file:///path/to/output.pdf", pdfProperties);

xComponent.dispose();
connection.dispose();