如何在office 365 REST API中发送邮件?

我发现了以下几点: documentation

POST https://outlook.office.com/api/v2.0/me/sendmail

{
  "Message": {
    "Subject": "Meet for lunch?",
    "Body": {
      "ContentType": "Text",
      "Content": "The new cafeteria is open."
    },
    "ToRecipients": [
      {
        "EmailAddress": {
          "Address": "garthf@a830edad9050849NDA1.onmicrosoft.com"
        }
      }
    ],
    "Attachments": [
      {
        "@odata.type": "#Microsoft.OutlookServices.FileAttachment",
        "Name": "menu.txt",
        "ContentBytes": "bWFjIGFuZCBjaGVlc2UgdG9kYXk="
      }
    ]
  },
  "SaveToSentItems": "false"
}

如果用户授权应用程序代表其行事,则此功能正常。然而,我使用client crednetial来构建一个守护程序应用程序,它代表给定租户中的所有用户,因此 “邮政 https://outlook.office.com/api/v2.0/me/sendmail "

如果你能帮我举个例子,我会很高兴的。仅供参考:我正在使用Java,但您的答案不必是Java。