我对发布我的问题很陌生。我正在写一个程序来读取邮件从新闻社是有附件。当任何邮件都以邮件（.msg）作为附件时，程序会说nullpointerexception而失败。
下面是我正在使用的代码片段。

service.loadPropertiesForItems(results, new PropertySet(BasePropertySet.FirstClassProperties, EmailMessageSchema.Attachments));
PropertySet psPropSet = new PropertySet(EmailMessageSchema.MimeContent, EmailMessageSchema.ToRecipients);
itItemId = new ItemId(emailItem.getId().toString());
emEmailMessage = EmailMessage.bind(service, itItemId, psPropSet);
AttachmentCollection attachments = emailItem.getAttachments();
attachments.forEach((attachment) -> { }

谁能告诉我答案吗。谢谢