在 Exchange (EWS) 中找不到文件夹：“邮箱不存在”答案

【问题标题】：Can't find folders in Exchange (EWS) : "Mailbox does not exist"在 Exchange (EWS) 中找不到文件夹：“邮箱不存在”
【发布时间】：2021-06-22 18:02:44
【问题描述】：

我正在使用 EWS 和 java 从 Outlook 邮箱中检索电子邮件。

我可以毫无问题地从收件箱中获取电子邮件：

  FolderId inbox=new FolderId(WellKnownFolderName.Inbox, new Mailbox(account));

  return service.findItems(inbox, new ItemView(15))
        .getItems()
        .stream()
        .map(item -> toEmail(item))
        .collect(toList());

我现在需要查看特定文件夹，我能找到的所有示例看起来都像这样：

private FolderId findSpecificFolder(ExchangeService service, String folderName) throws Exception {

    FolderView view = new FolderView(10);
    PropertySet prop= new PropertySet(BasePropertySet.IdOnly);
    prop.add(FolderSchema.DisplayName);

    view.setPropertySet(prop);
    view.setTraversal(FolderTraversal.Deep);

    FindFoldersResults findFolderResults = service.findFolders(WellKnownFolderName.Root, view);

    ...
}

但是对service.findFolders 的调用会产生异常：

microsoft.exchange.webservices.data.core.exception.service.remote.ServiceResponseException: Mailbox does not exist.

at microsoft.exchange.webservices.data.core.response.ServiceResponse.internalThrowIfNecessary(ServiceResponse.java:278)
at microsoft.exchange.webservices.data.core.response.ServiceResponse.throwIfNecessary(ServiceResponse.java:267)
at microsoft.exchange.webservices.data.core.request.MultiResponseServiceRequest.execute(MultiResponseServiceRequest.java:165)
at microsoft.exchange.webservices.data.core.ExchangeService.internalFindFolders(ExchangeService.java:377)
at microsoft.exchange.webservices.data.core.ExchangeService.findFolders(ExchangeService.java:425)
at microsoft.exchange.webservices.data.core.ExchangeService.findFolders(ExchangeService.java:461)

我很困惑，因为当我刚刚获取收件箱内容时它工作得很好。所以邮箱确实存在！

有没有其他可行的方法？

【问题讨论】：

标签： java exchangewebservices

【解决方案1】：

我找到了解决方法 - 但不确定为什么初始代码不起作用。

虽然Folder.bind 对我有用，但它有效：

private FolderId findSpecificFolder(ExchangeService service, String folderName) throws Exception {

    //reusing the Inbox FolderId that was working
    FolderId inbox=new FolderId(WellKnownFolderName.Inbox, new Mailbox(account));

    FolderView view = new FolderView(10);
    PropertySet prop= new PropertySet(BasePropertySet.IdOnly);
    prop.add(FolderSchema.DisplayName);

    view.setPropertySet(prop);
    view.setTraversal(FolderTraversal.Deep);

    //Binding the inboxFolder
    Folder inboxFolder=Folder.bind(service, inbox);

    FindFoldersResults subFolders=inboxFolder.findFolders(view);

    for (Folder subFolder : subFolders.getFolders()){
       ...
    } 
}

【讨论】：