我正在处理与Outlook Mail API相关的项目。 我想下载电子邮件中的附件。 文档说明我可以“获取”附件,并且它们在json响应中返回不同的参数,但我想知道我必须将哪个转换为附件,才能将实际的附件保存到文件系统中。
http://msdn.microsoft.com/office/office365/api/mail-rest-operations#Getattachments
谢谢。
根据文档, https://outlook.office.com/api/v2.0/me/messages/{message_id}/attachments
message_id} / attachments返回附件集合,其中包含各个附件的标识符:
{
"@odata.context": "https://outlook.office.com/api/v2.0/$metadata#Me/Messages('AAMkAGI2THVSAAA%3D')/Attachments(Name)",
"value": [
{
"@odata.type": "#Microsoft.OutlookServices.FileAttachment",
"@odata.id": "https://outlook.office.com/api/v2.0/Users('ddfcd489-628b-40d7-b48b-57002df800e5@1717622f-1d94-4d0c-9d74-709fad664b77')/Messages('AAMkAGI2THVSAAA=')/Attachments('AAMkAGI2j4kShdM=')",
"Id": "AAMkAGI2j4kShdM=",
"Name": "minutes.docx"
}
] }
现在,您可以遍历此列表并使用此API获取单个附件-https: https://outlook.office.com/api/v2.0/me/messages/{message_id}/attachments/{attachment_id}
attachments https://outlook.office.com/api/v2.0/me/messages/{message_id}/attachments/{attachment_id}
attachment_id https://outlook.office.com/api/v2.0/me/messages/{message_id}/attachments/{attachment_id}
,其中attachment_id是标识符从上述API返回。
响应将是:
{
"@odata.context": "https://outlook.office.com/api/v2.0/$metadata#Me/Messages('AAMkAGI2THVSAAA%3D')/Attachments/$entity",
"@odata.type": "#Microsoft.OutlookServices.FileAttachment",
"@odata.id": "https://outlook.office.com/api/v2.0/Users('ddfcd489-628b-40d7-b48b-57002df800e5@1717622f-1d94-4d0c-9d74-709fad664b77')/Messages('AAMkAGI2THVSAAA=')/Attachments('AAMkAGI2j4kShdM=')",
"Id": "AAMkAGI2j4kShdM=",
"LastModifiedDateTime": "2014-10-20T00:41:52Z",
"Name": "minutes.docx",
"ContentType": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
"Size": 11585,
"IsInline": false,
"ContentId": null,
"ContentLocation": null,
"ContentBytes": "UEsDBBQABgAIAAAAIQDCAAA4KQAAAAA=" }
现在,您可以使用ContentBytes和contentType在本地保存此附件。 此外,附件可以是ItemAttachments
或FileAttachments
。 在Google上搜索更多内容肯定会带您一些示例代码,其中显示了如何下载它们。 但这应该给您一个想法。
您可以检查以下内容:
public static void GetAttachmentsFromEmail(ExchangeService service, ItemId itemId)
{
// Bind to an existing message item and retrieve the attachments collection.
// This method results in an GetItem call to EWS.
EmailMessage message = EmailMessage.Bind(service, itemId, new PropertySet(ItemSchema.Attachments));
// Iterate through the attachments collection and load each attachment.
foreach (Attachment attachment in message.Attachments)
{
if (attachment is FileAttachment)
{
FileAttachment fileAttachment = attachment as FileAttachment;
// Load the attachment into a file.
// This call results in a GetAttachment call to EWS.
fileAttachment.Load("C:\\temp\\" + fileAttachment.Name);
Console.WriteLine("File attachment name: " + fileAttachment.Name);
}
else // Attachment is an item attachment.
{
ItemAttachment itemAttachment = attachment as ItemAttachment;
// Load attachment into memory and write out the subject.
// This does not save the file like it does with a file attachment.
// This call results in a GetAttachment call to EWS.
itemAttachment.Load();
Console.WriteLine("Item attachment name: " + itemAttachment.Name);
}
}
}