OpenOfficeOrgでPDFを生成(プログラムから)

MS-Officeのドキュメントをサーバ側でPDF化したい場合がある。 いい方法はないものかと探していたところ、OpenOfficeOrgを使うことで、 解決できることがわかった。

OpenOfficeOrgはJavaやJythonなどを使って、プログラム的に ドキュメントを操作することができる。
もともと、OpenOfficeOrgには、PDFでドキュメントを出力する機能が付いているので、 これをプログラムから処理してやればよいことになる。

複数あるMS-ワードのドキュメントを一括処理で、まとめてPDF化したい場合など、 OpenOfficeOrgのAPIを使って、Javaプログラムから操作できるのはグッド。

ただ、処理内容は単純なのだが、記述がややこしいのが難点。

code

import java.io.File;

import com.sun.star.beans.PropertyValue;
import com.sun.star.beans.XPropertySet;
import com.sun.star.bridge.XUnoUrlResolver;
import com.sun.star.frame.XComponentLoader;
import com.sun.star.frame.XStorable;
import com.sun.star.lang.XComponent;
import com.sun.star.lang.XMultiComponentFactory;
import com.sun.star.uno.UnoRuntime;
import com.sun.star.uno.XComponentContext;
import com.sun.star.view.XPrintable;


public class CreatePDF {

  public static void main(String args[]) {
    try {

      args=new String[]{"test.sxw"};
      String sConnectionString = "uno:socket,host=localhost,port=8100;urp;StarOffice.ServiceManager";


      /* Bootstraps a component context with the jurt base components
         registered. Component context to be granted to a component for running.
         Arbitrary values can be retrieved from the context. */
      XComponentContext xcomponentcontext =
      com.sun.star.comp.helper.Bootstrap.createInitialComponentContext( null );

      /* Gets the service manager instance to be used (or null). This method has
         been added for convenience, because the service manager is a often used
         object. */
      XMultiComponentFactory xmulticomponentfactory =
      xcomponentcontext.getServiceManager();

      /* Creates an instance of the component UnoUrlResolver which
         supports the services specified by the factory. */
      Object objectUrlResolver =
      xmulticomponentfactory.createInstanceWithContext(
      "com.sun.star.bridge.UnoUrlResolver", xcomponentcontext );

      // Create a new url resolver
      XUnoUrlResolver xurlresolver = ( XUnoUrlResolver )
      UnoRuntime.queryInterface( XUnoUrlResolver.class,
      objectUrlResolver );

      // Resolves an object that is specified as follow:
      // uno:<connection description>;<protocol description>;<initial object name>
      Object objectInitial = xurlresolver.resolve( sConnectionString );

      // Create a service manager from the initial object
      xmulticomponentfactory = ( XMultiComponentFactory )
      UnoRuntime.queryInterface( XMultiComponentFactory.class, objectInitial );

      // Query for the XPropertySet interface.
      XPropertySet xpropertysetMultiComponentFactory = ( XPropertySet )
      UnoRuntime.queryInterface( XPropertySet.class, xmulticomponentfactory );

      // Get the default context from the office server.
      Object objectDefaultContext =
      xpropertysetMultiComponentFactory.getPropertyValue( "DefaultContext" );

      // Query for the interface XComponentContext.
      xcomponentcontext = ( XComponentContext ) UnoRuntime.queryInterface(
      XComponentContext.class, objectDefaultContext );

      /* A desktop environment contains tasks with one or more
         frames in which components can be loaded. Desktop is the
         environment for components which can instanciate within
         frames. */
      XComponentLoader xcomponentloader = ( XComponentLoader )
      UnoRuntime.queryInterface( XComponentLoader.class,
      xmulticomponentfactory.createInstanceWithContext(
      "com.sun.star.frame.Desktop", xcomponentcontext ) );

      String sUrl = args[0];
      if ( sUrl.indexOf("private:") != 0) {
          java.io.File sourceFile = new java.io.File(args[0]);
          StringBuffer sTmp = new StringBuffer("file:///");
          sTmp.append(sourceFile.getCanonicalPath().replace('\\', '/'));
          sUrl = sTmp.toString();
      }    

      /*
      // Load a Writer document, which will be automaticly displayed
      XComponent xcomponent = xcomponentloader.loadComponentFromURL(
              sUrl, "_blank", 0,
              new PropertyValue[0] );
      */


      PropertyValue[] loadProps = new PropertyValue[1];
      loadProps[0] = new PropertyValue();
      loadProps[0].Name = "Hidden";
      loadProps[0].Value = new Boolean(true); 

      XComponent xcomponent = xcomponentloader.loadComponentFromURL(
      sUrl, "_blank", 0,loadProps);

      new CreatePDF().saveAsPDF(xcomponent,new File("test.pdf"));

      System.exit(0);
    }
    catch( Exception exception ) {
      System.err.println( exception );
    }
  }

  private void saveAsPDF(XComponent xDoc,File file) throws Exception{
      java.io.File sourceFile = file;
      StringBuffer sTmp = new StringBuffer("file:///");
      sTmp.append(sourceFile.getCanonicalPath().replace('\\', '/'));
      String sUrl = sTmp.toString();

      storeDocComponent(xDoc,sUrl);

      xDoc.dispose();
  }

  private void storeDocComponent(XComponent xDoc, String storeUrl) throws java.lang.Exception {

       XStorable xStorable = (XStorable)UnoRuntime.queryInterface(XStorable.class, xDoc);

       PropertyValue[] storeProps = new PropertyValue[1];
       storeProps[0] = new PropertyValue();
       storeProps[0].Name = "FilterName";
       storeProps[0].Value = "writer_pdf_Export";        
//       storeProps[0].Value = "MS Word 97";        
//       xStorable.storeAsURL(storeUrl, storeProps);          
       xStorable.storeToURL(storeUrl, storeProps);


   } 
  private void printDocComponent(XComponent xDoc) throws java.lang.Exception {

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

      PropertyValue[] printerDesc = new PropertyValue[1];
      printerDesc[0] = new PropertyValue();
      printerDesc[0].Name = "Name";
//      printerDesc[0].Value = "5D PDF Creator";        
      printerDesc[0].Value = "Adobe PDF";        
      xPrintable.setPrinter(printerDesc);        



      PropertyValue[] printOpts = new PropertyValue[1];
      printOpts[0] = new PropertyValue();
      printOpts[0].Name = "Pages";
      printOpts[0].Value = "1";        

//      printOpts[0].Value = "3-5,7";        

      xPrintable.print(printOpts);

  }
}

※作動させるには、 [OfficePath]/program/classes/*.jar をクラスパスに含める必要がある。