但是,在响应正文中,我得到的是这样的：

{
    "@odata.context": "https://graph.microsoft.com/v1.0/$Metadata#users","value": [
        {
            "givenName": "Foo","surname": "Bar","displayName": "Foo Bar","id": "b41efha115adcca29","userPrincipalName": "email.address@outlook.com","businessPhones": [],"jobTitle": null,"mail": null,"mobilePhone": null,"officeLocation": null,"preferredLanguage": null
        }
    ]
}

mail属性为null,此响应正文中的userPrincipalName恰好是用户的电子邮件地址.但是,这是来自微软的docs：

Although the UPN and email share the same format,the value of the UPN for a user might or might not be the same as the email address of the user.

在启动用户的登录请求时,我们正在请求“user.read”和“email”范围.我们使用MSAL.js库来获取访问令牌,我们的代码读取如下内容：

login (): ng.IPromise<IMicrosoftOAuthResponse> {
  const prom = this.userAgentApplication.loginPopup(["user.read","email"])
    .then((idToken) => {
      return this.userAgentApplication.acquireTokenSilent(["user.read","email"]);
    })
    .then((accessToken) => {
      // at this point,we have the accessToken and make a call to the graph api
    });
  return this.$q.when(prom);
}

如何在此处获取用户的实际电子邮件地址？