Why cant I open 32bit Outlook on a 64bit System using a JAR when it worked in Eclipse…?

问题

The Java app I am developing is an internal tool for others to use to help our daily activities. When the tool is used (on a JButton press which calls the code below) I want it to open a new Outlook EMail for the user to see/edit.

At first I was developing this app in a 64 bit Eclipse and could not get SWT to open Outlook despite all my research. After I had some issues running 64bit versus 32bit SWT, I had the idea to check Outlook, and sure enough the company using is 32 bit. I loaded up a 32 bit eclipse, imported my project, switch SWT to 32 bit and it worked exactly as intended.

I noticed the process that was running was javaw.exe*32 but the 64bit Eclipse was using the process javaw.exe. I exported the JAR from the 32bit Eclipse and gave it a shot and no EMail showed up. I checked the JRE's installed and saw both 32bit and 64bit but my company had a policy that forced only the 64bit JRE in the Java Control Panel. I worked with some others and got both installed and enabled as seen here. Still the JAR fails to open the EMail. I even tried disabling the 64bit and it still does not work.

Is there anything that can be done to remedy this situation? Please let me know if I can elaborate better or provide more info!

package EDM_PKG;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FillLayout;
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;

public class CreateEmail {
private static Display display = new Display();
public static void sendEMail(String env) {
    //String currUser = System.getProperty("user.name");
    String msg = getMessage(env);
    String sub = getSubject(env);
    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, "BodyFormat", 2 /* HTML */);
    setProperty(mail, "Subject", sub);
    setProperty(mail, "To", "example@gmail.com");
    setProperty(mail, "HtmlBody", msg);

    invoke(mail, "Display" /* or "Send" */);
    display = null;
}
private static String getMessage(String env) {
    String msg = "";
    if (env.equalsIgnoreCase("quas")) {
        msg = "<html><body>The <b>USER</b> excel has been migrated to <b>QUAS.</b><br><br> This email was generated by Excel Datatable Migrator.</body></html>";
    } else if (env.equalsIgnoreCase("prod")) {
        msg = "<html><body>The <b>QUAS</b> excel has been migrated to <b>PROD.</b><br><br>This email was generated by Excel Datatable Migrator.</body></html>";
    }  else {
        msg = "Somthing happened with the automated message of EDM. Please contact the user with the eCode: "+System.getProperty("user.name")+".</body></html>";
    }

    return msg;
}
private static String getSubject(String env) {
    String sub = "";
    if (env.equalsIgnoreCase("quas")) {
        sub = "EDM has been used to move USER to QUAS...";
    } else if (env.equalsIgnoreCase("prod")) {
        sub = "EDM has been used to move QUAS to PROD...";
    }  else {
        sub = "Somthing didnt quite work right...";
    }

    return sub;
}
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) });
}

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];
}
}

回答1:

There's no need to use the heavyweight and difficult to use Ole classes. If all you want is to send an email, just call this:

Program.launch("mailto:bla@blubb.com&subject=Subject&body=Me‌ssage here");

This will work on all architectures and operating systems.

来源：https://stackoverflow.com/questions/40678762/why-cant-i-open-32bit-outlook-on-a-64bit-system-using-a-jar-when-it-worked-in-ec

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java

eclipse

outlook

swt