产品中要用到在Rcp程序中操作Excel。在网上goole了一下，发现一篇文章还不错，测试了一下通过。
Integrate Eclipse RCP with Microsoft Applications - Tutorial
Lars Vogel
<webmaster@vogella.de>
Version 0.5
Copyright © 2007 Lars Vogel
01.11.2007
Abstract
The Eclipse Rich Client Platform (RCP) is using the SWT GUI framework. SWT does allow to integrated Microsoft application via OLE (Object Linking and Embedding). This article will demonstrate how SWT can be used within an Eclipse RCP application to integrate / use Microsoft applications. Microsoft Outlook and Microsoft Excel are used as examples
This article assumes that you are already familiar with using the Eclipse IDE and with developing simple Eclipse RCP applications.
--------------------------------------------------------------------------------
Table of Contents
1. Microsoft Object Linking and Embedding
1.1. Overview
2. Microsoft Integration - Sending an email via outlook
2.1. Create Project
2.2. Add action
2.3. Program the action
3. Microsoft Integration - Use Excel in your application.
3.1. Create Project
3.2. Change View code
4. Links and Literature
1. Microsoft Object Linking and Embedding
1.1. Overview
Windows applications use OLE (Object Linking and Embedding) to allow applications to control other application objects. The following will show how to do this using a few examples.
2. Microsoft Integration - Sending an email via outlook
This example assumes you running an MS operating system and that you have a version of Outlook installed.
2.1. Create Project
Create a new project "OutlookTest" (see here how to create a new RCP project). Use the "Hello RCP " as a template.
2.2. Add action
Using extensions add action "sendEmail" (see here how to add an action). The class of this action should be "outlooktest.SendEmail". Run the application. The result should look like the following.
2.3. Program the action
Lets program the action. The following coding will create and open the email for the user. It also assumes that you have a file c:\temp\test.txt which will be attached to the email.
package outlooktest;
import java.io.File;
import org.eclipse.jface.action.IAction;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.swt.SWT;
import org.eclipse.swt.ole.win32.OLE;
import org.eclipse.swt.ole.win32.OleAutomation;
import org.eclipse.swt.ole.win32.OleClientSite;
import org.eclipse.swt.ole.win32.OleFrame;
import org.eclipse.swt.ole.win32.Variant;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.IWorkbenchWindowActionDelegate;
public class SendEmail implements IWorkbenchWindowActionDelegate {
private Shell shell;
@Override
public void dispose() {
// TODO Auto-generated method stub
}
@Override
public void init(IWorkbenchWindow window) {
shell = window.getShell();
}
@Override
public void run(IAction action) {
Display display = Display.getCurrent();
Shell shell = new Shell(display);
OleFrame frame = new OleFrame(shell, SWT.NONE);
// This should start outlook if it is not running yet
OleClientSite site = new OleClientSite(frame, SWT.NONE, "OVCtl.OVCtl");
site.doVerb(OLE.OLEIVERB_INPLACEACTIVATE);
// Now get the outlook application
OleClientSite site2 = new OleClientSite(frame, SWT.NONE,
"Outlook.Application");
OleAutomation outlook = new OleAutomation(site2);
//
OleAutomation mail = invoke(outlook, "CreateItem", 0 /* Mail item */)
.getAutomation();
setProperty(mail, "To", "test@gmail.com"); /* Empty but could also be predefined */
setProperty(mail, "Bcc", "test@gmail.com"); /* Empty but could also be predefined */
setProperty(mail, "BodyFormat", 2 /* HTML */);
setProperty(mail, "Subject", "Top News for you");
setProperty(mail, "HtmlBody",
"<html>Hello<p>, please find some infos here.</html>");
File file = new File("c:/temp/test.txt");
if (file.exists()) {
OleAutomation attachments = getProperty(mail, "Attachments");
invoke(attachments, "Add", "c:/temp/test.txt");
} else {
MessageDialog
.openInformation(shell, "Info",
"Attachment File c:/temp/test.txt not found; will send email with attachment");
}
invoke(mail, "Display" /* or "Send" */);
}
private static OleAutomation getProperty(OleAutomation auto, String name) {
Variant varResult = auto.getProperty(property(auto, name));
if (varResult != null && varResult.getType() != OLE.VT_EMPTY) {
OleAutomation result = varResult.getAutomation();
varResult.dispose();
return result;
}
return null;
}
private static Variant invoke(OleAutomation auto, String command,
String value) {
return auto.invoke(property(auto, command),
new Variant[] { new Variant(value) });
}
@Override
public void selectionChanged(IAction action, ISelection selection) {
// TODO Auto-generated method stub
}
private static Variant invoke(OleAutomation auto, String command) {
return auto.invoke(property(auto, command));
}
private static Variant invoke(OleAutomation auto, String command, int value) {
return auto.invoke(property(auto, command),
new Variant[] { new Variant(value) });
}
private static boolean setProperty(OleAutomation auto, String name,
String value) {
return auto.setProperty(property(auto, name), new Variant(value));
}
private static boolean setProperty(OleAutomation auto, String name,
int value) {
return auto.setProperty(property(auto, name), new Variant(value));
}
private static int property(OleAutomation auto, String name) {
return auto.getIDsOfNames(new String[] { name })[0];
}
}
If you now start the application and press the button an email should be prepared and shown to the user.
3. Microsoft Integration - Use Excel in your application.
This example assume that you running on Microsoft and that you have a version of Microsoft Excel installed.
3.1. Create Project
Create a new project "ExcelTest" (see here how to create a new RCP project). Use the "RCP with a view" as a template. Run it and see that is working.
3.2. Change View code
Select View.java and replace the coding with the following.
package exceltest;
import org.eclipse.swt.SWT;
import org.eclipse.swt.SWTError;
import org.eclipse.swt.ole.win32.OleClientSite;
import org.eclipse.swt.ole.win32.OleFrame;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.ui.part.ViewPart;
public class View extends ViewPart {
public static final String ID = "ExcelTest.view";
private OleClientSite site;
public View() {
}
@Override
public void createPartControl(Composite parent) {
try {
OleFrame frame = new OleFrame(parent, SWT.NONE);
site = new OleClientSite(frame, SWT.NONE, "Excel.Sheet");
} catch (SWTError e) {
System.out.println("Unable to open activeX control");
return;
}
}
@Override
public void setFocus() {
// Have to set the focus see https://bugs.eclipse.org/bugs/show_bug.cgi?id=207688
site.setFocus();
}
}
Start your application and excel should be displayed.
4. Links and Literature
http://www.eclipse.org/ Eclipse Website
http://www.vogella.de/articles/Eclipse/article.html Using Eclipse as IDE - Tutorial
http://www.vogella.de/articles/RichClientPlatform/article.html Eclipse Rich Client Platform - Tutorial
http://www.vogella.de/articles/EclipseCodeAccess/article.html A guide to access the Eclipse Sources