使用npm软件包googleapis，如何在验证用户的电子邮件地址后获得他们的电子邮件地址? [英] With the npm package googleapis how do I get the user's email address after authenticating them?

问题描述

我正在使用此npm库- https://www.npmjs.com/package/googleapis ，并且我将以下Express路由用作/user/:

I'm using this npm library - https://www.npmjs.com/package/googleapis and I'm using the following Express routes as /user/:

/* Redirect to the google login page */
  router.get('/login', function (req, res) {
    res.redirect(auth.generateUrl());
  });

  /* The callback from the google OAuth API call */
  router.get('/callback', function (req, res) {
    auth.authenticate(req.query.code);

    res.send();
  });

auth是此模块:

var oAuth2 = require('googleapis').auth.OAuth2;

var oauth2Client = new oAuth2([CLIENT_ID], [CLIENT_SECRET], [DOMAIN] + '/user/callback');

module.exports = {
    /**
     * Generate a url to redirect to for authenticating via Google
     *
     * @return {String}
     */
    generateUrl: function () {
        return oauth2Client.generateAuthUrl({
            access_type: 'online', // 'online' (default) or 'offline' (gets refresh_token)
            scope: ['https://www.googleapis.com/auth/userinfo.email'] // If you only need one scope you can pass it as string
        });
    },
    authenticate: function (code) {
        oauth2Client.getToken(code, function (err, tokens) {
            console.log(err);

            // Now tokens contains an access_token and an optional refresh_token. Save them.
            if (!err) {
                console.log(tokens);

                oauth2Client.setCredentials(tokens);
            }
        });
    }
};

以上身份验证功能基于 https://www中的示例. npmjs.com/package/googleapis#retrieve-access-token .

The authenticate function above is based on the example in https://www.npmjs.com/package/googleapis#retrieve-access-token.

现在，如果我转到/user/login，我会看到google登录页面，然后要求我许可.我已经使用了上面的电子邮件范围，但是在返回的tokens对象中看不到我的电子邮件地址.这就是我得到的:

Now if I go to /user/login I see the google login page, which then asks me for permission. I have used the email scope above but I do not see my email address in the tokens object that is returned. This is what I get:

{ access_token: '[72 length string]',
  token_type: 'Bearer',
  id_token: '[884 length string]',
  expiry_date: [integer timestamp] }

这不是如何获取电子邮件地址吗?该文档不是很清楚，我在网上也没有找到示例教程，因为它们主要处理Google提供的特定服务，例如日历.我只对基本身份验证感兴趣.在文档中找不到其他任何可以获得范围信息的方法.

Is this not how to get the email address? The documentation is not very clear and neither are example tutorials I have found online, as they mainly deal with a specific service from google, like the calendars. I'm only interested in basic authentication. I can't find any other methods that might get scope information in the documentation.

还有一点要注意，但是当用户登录时，我是否必须在每个请求上都调用getToken()?

A minor point as well, but do I have to call getToken() on every request when a user is logged in?

在深入研究库的代码后，我发现了这一点:

After some digging around in the code for the library, I found this:

this.userinfo = {

    /**
     * oauth2.userinfo.get
     *
     * @desc Get user info
     *
     * @alias oauth2.userinfo.get
     * @memberOf! oauth2(v1)
     *
     * @param  {object=} params - Parameters for request
     * @param  {callback} callback - The callback that handles the response.
     * @return {object} Request object
     */
    get: function(params, callback) {
      var parameters = {
        options: {
          url: 'https://www.googleapis.com/oauth2/v1/userinfo',
          method: 'GET'
        },
        params: params,
        requiredParams: [],
        pathParams: [],
        context: self
      };

      return createAPIRequest(parameters, callback);
    }

这同时在node_modules/googleapis/apis/oauth2/v1.js和node_modules/googleapis/apis/oauth2/v1.js中.但是，这似乎不是require('googleapis').auth.OAuth2所使用的，而是node_modules/google-auth-library/lib/auth/oauth2client.js.有访问userinfo.get的方法吗?

This is in both node_modules/googleapis/apis/oauth2/v1.js and node_modules/googleapis/apis/oauth2/v1.js. However, this doesn't appear to be what require('googleapis').auth.OAuth2 uses, which is node_modules/google-auth-library/lib/auth/oauth2client.js. Is there a way of accessing userinfo.get?

进一步编辑

我找到了本教程- https://www.theodo.fr/blog/2014/06/dont-bother-with-keys-open-your-door-with-google-api/，此部分哪一个(页面底部附近)正是我想要做的:

I found this tutorial - https://www.theodo.fr/blog/2014/06/dont-bother-with-keys-open-your-door-with-google-api/, this section of which (near the bottom of the page) is exactly what I want to do:

googleapis.discover('oauth2', 'v1').execute(function(err, client) {
    if (!err) {
        client.oauth2.userinfo.get().withAuthClient(oauth2Client).execute(function(err, results) {
            var email = results.email;

            if ((email.indexOf('theodo.fr') + 'theodo.fr'.length) != email.length) {
                return res.send({
                    status: -1,
                    message: "Google Plus authentication failed (domain mismatch)"
                });
            }

            doorClient.open();

            res.send({
                status: 0,
                message: 'Door opened. Welcome !'
            });
        });
    }
});

不考虑Google API的绝对荒谬，此代码不再起作用. discover不再是一个函数，所以我不知道如何访问包含我需要的userinfo.get函数的v1或v2.

Leaving aside the absolute ridiculous verbosity of Google's API, this code no longer works. discover is no longer a function so I've no idea how to access v1 or v2 which contain the userinfo.get function that I need.

推荐答案

对于我没有的版本2.1.6，使其有效的方法是:

With the version I have right not, which is 2.1.6, the way to make it work is:

googleapis.oauth2("v2").userinfo.v2.me.get({auth: oauth2Client}, (e, profile) => {
    ...
});

我必须研究源代码以找出方法，但我不确定100％是否是最好的方法，因为我不得不两次提及"v2".但这对我有用.

I have to looked into the source code to figure out how to do it and I am not 100% sure whether this is the best way because I have to mention "v2" twice. But it works for me.

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