问微软图形API -发送电子邮件- NoPermissionsInAccessToken

EN

url = URI.parse("https://login.microsoftonline.com/common/oauth2/v2.0/token")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = (url.scheme == "https")

req = Net::HTTP::Post.new(url.request_uri)
req.set_form_data({
    'client_id' => CLIENT_ID, 
    'client_secret' => CLIENT_SCERET,
    'grant_type' => 'client_credentials',
    'scope' => 'https://graph.microsoft.com/.default'
})
response = http.request(req)

url = URI.parse("https://graph.microsoft.com/v1.0/users/{MYID}/sendMail")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = (url.scheme == "https")
req = Net::HTTP::Post.new(url.request_uri)
req["Authorization"] = "Bearer #{get_token_without_user}"
req["Content-type"] = "application/json"

req.set_form_data({
    "message": {
       "subject": "Meet for lunch?",
       "body": {
          "contentType": "Text",
          "content": "The new cafeteria is open."
        }
     },
     "toRecipients": [
        {
          "emailAddress": {
             "address": "to_email@gmail.com"
          }
     }],
     "saveToSentItems": "false"
})
response = http.request(req)