Java、Jacob 和 Microsoft Outlook 事件:接收“无法找到事件 iid"；错误

时间：2023-05-03
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问题描述

限时送ChatGPT账号..

我正在编写一个使用 Jacob 库(桥接 COM 和 Java)与 Microsoft Outlook 交互的 Java 程序).该程序创建一个新的 MailItem，显示它的Inspector 窗口给用户.我希望订阅检查员的 关闭事件 知道用户何时完成了他们的邮件项目的编辑.

要订阅该活动，我按照 Jacob 的文档 中的说明进行操作(关于 2⁄3 在页面下方):

<块引用>

当前的 [event] 模型在概念上是类似于 Visual Basic WithEvents构造.基本上，我提供了一个类称为com.jacob.com.DispatchEvents 其中有一个接受源的构造函数对象(类型com.jacob.com.Dispatch) 和一个目标对象(任何类型).来源查询对象的IConnectionPointContainer 接口我试图获得一个IConnectionPoint 为其默认值源接口(我从IProvideClassInfo).同时，我还创建了 DISPID 的映射对于默认源接口实际的方法名称.然后我用获取 jmethodID 的方法名称来自目标 Java 对象的句柄.目前所有的事件方法都必须有相同的签名:一个论点是一个 Java 变体数组，以及一个void 返回类型.

这是我的 InspectorEventHandler 类，符合 Jacob 的文档:

公共类 InspectorEventHandler {公共无效激活(变体[]参数){}public void BeforeMaximize(Variant[] arguments) {}public void BeforeMinimize(Variant[] arguments) {}public void BeforeMove(Variant[] arguments) {}public void BeforeSize(Variant[] arguments) {}公共无效关闭(变量[]参数){System.out.println("关闭");}公共无效停用(变体[]参数){}公共无效页面更改(变体 [] 参数){}}

下面是我使用这个 InspectorEventHandler 类订阅事件的方式:

Object outlook = new ActiveXComponent("Outlook.Application");对象 mailItem = Dispatch.call(outlook, "CreateItem", 0).getDispatch();对象检查器 = Dispatch.get(mailItem, "GetInspector").getDispatch();InspectorEventHandler eventHandler = new InspectorEventHandler();//这应该向检查器注册 eventHandlernew DispatchEvents((Dispatch) 检查器，eventHandler);

但是，最后一行失败并出现以下异常:

<上一页>线程主"com.jacob.com.ComFailException 中的异常:找不到事件 iid在 com.jacob.com.DispatchEvents.init(本机方法)在 com.jacob.com.DispatchEvents.(DispatchEvents.java)在 cake.CakeApplication.run(CakeApplication.java:30)在 cake.CakeApplication.main(CakeApplication.java:15)无法获得 IProvideClassInfo

根据谷歌，其他一些人也收到此错误.不幸的是，他们都没有收到答复.

我正在使用 Jacob 库的 1.7 版，它声称可以防止此问题:

<块引用>

1.7 版还包括阅读代码类型库直接来自天才.这使得工作成为可能与所有 Microsoft Office应用程序事件，以及 IE5事件.有关示例，请参见samples/test/IETest.java 示例.

我注意到前面提到的 IETest.java 文件订阅了这样的事件:

new DispatchEvents((Dispatch) ieo, ieE,"InternetExplorer.Application.1");

因此，我尝试以类似的方式订阅我的活动:

new DispatchEvents((Dispatch) 检查器, eventHandler, "Outlook.Application");new DispatchEvents((Dispatch) 检查器，eventHandler，Outlook.Application.1")；new DispatchEvents((Dispatch) 检查器，eventHandler，Outlook.Application.12")；

所有这些尝试都因相同的错误而失败.

解决方案

经过一些实验，我确定我可以通过订阅 MailItem 的 Close 事件 而不是 Inspector的关闭事件.我现在有一个处理所有 MailItemEventHandler 类"nofollow noreferrer">MailItem 事件:

公共类 MailItemEventHandler {公共无效附件添加(变体[]参数){System.out.println("附件添加");}公共无效附件读取(变量[]参数){System.out.println("附件读取");}公共无效附件删除(变量[]参数){System.out.println("附件删除");}public void BeforeAttachmentAdd(Variant[] arguments) {System.out.println("BeforeAttachmentAdd");}public void BeforeAttachmentPreview(Variant[] arguments) {System.out.println("BeforeAttachmentPreview");}public void BeforeAttachmentRead(Variant[] arguments) {System.out.println("BeforeAttachmentRead");}public void BeforeAttachmentSave(Variant[] arguments) {System.out.println("BeforeAttachmentSave");}public void BeforeAttachmentWriteToTempFile(Variant[] arguments) {System.out.println("BeforeAttachmentWriteToTempFile");}public void BeforeAutoSave(Variant[] arguments) {System.out.println("自动保存前");}public void BeforeCheckNames(Variant[] arguments) {System.out.println("BeforeCheckNames");}public void BeforeDelete(Variant[] arguments) {System.out.println("删除前");}公共无效关闭(变量[]参数){System.out.println("关闭");}公共无效CustomAction(变体[]参数){System.out.println("CustomAction");}公共无效CustomPropertyChange(变量[]参数){System.out.println("CustomPropertyChange");}公共无效转发(变体[]参数){System.out.println("转发");}公共无效开放(变体[]参数){System.out.println("打开");}公共无效PropertyChange(变体[]参数){System.out.println("PropertyChange");}公共无效读取(变量[]参数){System.out.println("读取");}公共无效回复(变体[]参数){System.out.println("回复");}公共无效回复所有(变体[]参数){System.out.println("ReplyAll");}公共无效发送(变体[]参数){System.out.println("发送");}公共无效卸载(变体[]参数){System.out.println("卸载");}公共无效写入(变体 [] 参数){System.out.println("写");}}

我使用以下方式订阅事件:

Object outlook = new ActiveXComponent("Outlook.Application");对象 mailItem = Dispatch.call(outlook, "CreateItem", 0).getDispatch();MailItemEventHandler eventHandler = new MailItemEventHandler();新的 DispatchEvents((Dispatch) mailItem, eventHandler);

我对COM了解不多，但是看来Inspector对象注册有问题...

I am writing a Java program that interacts with Microsoft Outlook using the Jacob library (bridges COM and Java). This program creates a new MailItem, displaying its Inspector window to the user. I wish to subscribe to the inspector's Close event to know when the user is finished editing their mail item.

To subscribe to the event, I followed the instructions in Jacob's documentation (about 2⁄3 down the page):

The current [event] model is conceptually similar to the Visual Basic WithEvents construct. Basically, I provide a class called com.jacob.com.DispatchEvents which has a constructor that takes a source object (of type com.jacob.com.Dispatch) and a target object (of any type). The source object is queried for its IConnectionPointContainer interface and I attempt to obtain an IConnectionPoint for its default source interface (which I obtain from IProvideClassInfo). At the same time, I also create a mapping of DISPID's for the default source interface to the actual method names. I then use the method names to get jmethodID handles from the target Java object. All event methods currently must have the same signature: one argument which is a Java array of Variants, and a void return type.

Here is my InspectorEventHandler class, conforming to Jacob's documentation:

public class InspectorEventHandler {

    public void Activate(Variant[] arguments) {

    }

    public void BeforeMaximize(Variant[] arguments) {

    }

    public void BeforeMinimize(Variant[] arguments) {

    }

    public void BeforeMove(Variant[] arguments) {

    }

    public void BeforeSize(Variant[] arguments) {

    }

    public void Close(Variant[] arguments) {
        System.out.println("Closing");
    }

    public void Deactivate(Variant[] arguments) {

    }

    public void PageChange(Variant[] arguments) {

    }

}

And here is how I subscribe to the events using this InspectorEventHandler class:

Object outlook = new ActiveXComponent("Outlook.Application");
Object mailItem = Dispatch.call(outlook, "CreateItem", 0).getDispatch();
Object inspector = Dispatch.get(mailItem, "GetInspector").getDispatch();

InspectorEventHandler eventHandler = new InspectorEventHandler();

// This supposedly registers eventHandler with the inspector
new DispatchEvents((Dispatch) inspector, eventHandler);

However, the last line fails with the following exception:

Exception in thread "main" com.jacob.com.ComFailException: Can't find event iid
    at com.jacob.com.DispatchEvents.init(Native Method)
    at com.jacob.com.DispatchEvents.(DispatchEvents.java)
    at cake.CakeApplication.run(CakeApplication.java:30)
    at cake.CakeApplication.main(CakeApplication.java:15)
couldn't get IProvideClassInfo

According to Google, a few others have also received this error. Unfortunately, none of them have received an answer.

I am using version 1.7 of the Jacob library, which claims to prevent this problem:

Version 1.7 also includes code to read the type library directly from the progid. This makes it possible to work with all the Microsoft Office application events, as well as IE5 events. For an example see the samples/test/IETest.java example.

I noticed that the aforementioned IETest.java file subscribes to events like this:

new DispatchEvents((Dispatch) ieo, ieE,"InternetExplorer.Application.1");

Therefore, I tried subscribing to my events in a similar manner:

new DispatchEvents((Dispatch) inspector, eventHandler, "Outlook.Application");
new DispatchEvents((Dispatch) inspector, eventHandler, "Outlook.Application.1");
new DispatchEvents((Dispatch) inspector, eventHandler, "Outlook.Application.12");

All these attempts failed with the same error.

解决方案

After some experimentation, I determined that I could achieve the desired result by subscribing to the MailItem's Close event rather than the Inspector's Close event. I now have a MailItemEventHandler class that handles all MailItem events:

public class MailItemEventHandler {

    public void AttachmentAdd(Variant[] arguments) {
        System.out.println("AttachmentAdd");
    }

    public void AttachmentRead(Variant[] arguments) {
        System.out.println("AttachmentRead");
    }

    public void AttachmentRemove(Variant[] arguments) {
        System.out.println("AttachmentRemove");
    }

    public void BeforeAttachmentAdd(Variant[] arguments) {
        System.out.println("BeforeAttachmentAdd");
    }

    public void BeforeAttachmentPreview(Variant[] arguments) {
        System.out.println("BeforeAttachmentPreview");
    }

    public void BeforeAttachmentRead(Variant[] arguments) {
        System.out.println("BeforeAttachmentRead");
    }

    public void BeforeAttachmentSave(Variant[] arguments) {
        System.out.println("BeforeAttachmentSave");
    }

    public void BeforeAttachmentWriteToTempFile(Variant[] arguments) {
        System.out.println("BeforeAttachmentWriteToTempFile");
    }

    public void BeforeAutoSave(Variant[] arguments) {
        System.out.println("BeforeAutoSave");
    }

    public void BeforeCheckNames(Variant[] arguments) {
        System.out.println("BeforeCheckNames");
    }

    public void BeforeDelete(Variant[] arguments) {
        System.out.println("BeforeDelete");
    }

    public void Close(Variant[] arguments) {
        System.out.println("Close");
    }

    public void CustomAction(Variant[] arguments) {
        System.out.println("CustomAction");
    }

    public void CustomPropertyChange(Variant[] arguments) {
        System.out.println("CustomPropertyChange");
    }

    public void Forward(Variant[] arguments) {
        System.out.println("Forward");
    }

    public void Open(Variant[] arguments) {
        System.out.println("Open");
    }

    public void PropertyChange(Variant[] arguments) {
        System.out.println("PropertyChange");
    }

    public void Read(Variant[] arguments) {
        System.out.println("Read");
    }

    public void Reply(Variant[] arguments) {
        System.out.println("Reply");
    }

    public void ReplyAll(Variant[] arguments) {
        System.out.println("ReplyAll");
    }

    public void Send(Variant[] arguments) {
        System.out.println("Send");
    }

    public void Unload(Variant[] arguments) {
        System.out.println("Unload");
    }

    public void Write(Variant[] arguments) {
        System.out.println("Write");
    }

}

I subscribe to the events using:

Object outlook = new ActiveXComponent("Outlook.Application");
Object mailItem = Dispatch.call(outlook, "CreateItem", 0).getDispatch();

MailItemEventHandler eventHandler = new MailItemEventHandler();
new DispatchEvents((Dispatch) mailItem, eventHandler);

I don't know much about COM, but it appears that there is something wrong with the Inspector object registration...

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