javascript 尝试检索经过身份验证的 Google+ 用户的电子邮件地址时出现“gapi.client 未定义”
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Getting "gapi.client is undefined" when trying to retrieve an authenticated Google+ user's email address
提问by dannepanne
I'm trying to retrieve user data from a visitor who has signed in to my site using google + sign in button, but I just end up with the message "TypeError: gapi.client is undefined" in the javascript console.
我正在尝试从使用 google + 登录按钮登录到我的网站的访问者那里检索用户数据，但我最终在 javascript 控制台中收到消息“TypeError: gapi.client is undefined”。
Since I could not identify the error I finally copy/pasted the example code from Google, which can be found here: https://developers.google.com/+/web/people/#retrieve_an_authenticated_users_email_address
由于我无法识别错误，我最终从 Google 复制/粘贴了示例代码，可在此处找到：https: //developers.google.com/+/web/people/#retrieve_an_authenticated_users_email_address
The only thing I changed was the Client ID (for web applications).
我唯一改变的是客户端 ID（用于 Web 应用程序）。
And I STILL get the same error!
我仍然遇到同样的错误！
Since the example code does not work for me, I'm thinking, maybe my settings in the Google API Console are wrong. I have tried to follow the instructions:
由于示例代码对我不起作用，我在想，也许我在 Google API 控制台中的设置是错误的。我试图按照说明进行操作：
- Google+ API Service is active
- Redirect URIs: none
- JavaScript origins are set to localhost and the actual production domain.
- Google+ API 服务已启用
- 重定向 URI：无
- JavaScript 源设置为 localhost 和实际生产域。
Have also tried to upload the example code to the production server, just to see if this was a local environment issue, but I still get the same error.
也尝试将示例代码上传到生产服务器，只是为了看看这是否是本地环境问题，但我仍然遇到相同的错误。
回答by BrettJ
You must include the script and include the clientAPI in addition to the plusonescript:
client除了plusone脚本之外，您还必须包含脚本并包含API ：
<script src="https://apis.google.com/js/client:plusone.js" type="application/javascript"></script>
The demo page was doing it incorrectly, which I've fixed.
演示页面做错了，我已经修复了。
回答by Purvesh
gapi.client.load('plus', 'v1', function() {
var request = gapi.client.plus.people.get({
'userId': 'me'
});
request.execute(function(response) {
console.log(response);
});
});
回答by jj_
This may sound stupid.. but sometimes you just need to close and reopen the browser...
这听起来可能很愚蠢......但有时你只需要关闭并重新打开浏览器......
I tried almost all solutions among almost all relevant SO questions, nothing worked.
我在几乎所有相关的 SO 问题中尝试了几乎所有的解决方案，但没有任何效果。
Finally I decided to see if it was working with another browser, and it did... hence I just closed and reopened the browser I was working in.. and voilà.
最后我决定看看它是否可以与另一个浏览器一起工作，并且确实如此……因此我关闭并重新打开了我正在使用的浏览器……瞧。
I am not sure why it was not working. I was not caching requests, I was reloading the page each time with ctrl-F5 and had also disabled caching within dev tools (for when dev tools are in use).
我不确定为什么它不起作用。我没有缓存请求，我每次都使用 ctrl-F5 重新加载页面，并且还禁用了开发工具中的缓存（在使用开发工具时）。
回答by John
Here are two of the reasons I've gotten his error and I'll update in the future if/when I encounter any more.
这是我收到他的错误的两个原因，如果/当我遇到更多错误时，我会在将来更新。
One of the errors I encountered was that the variables were not being loaded. I use Waterfox by default though I felt like I wasn't getting any useful information. I used Chrome and it gave me a useful error message about the authorize button being null. I had to move the authorizeButton(which I made proper by removing camelCase) directly in to the functions and everything worked.
I also disable third party cookiesby default and again I wasn't getting any useful information. I literally slowly recreated the Waterfox profile until I got to the preferences file and eventually determined that the preference was for third partycookies, enabled them and it all worked again.
我遇到的错误之一是未加载变量。我默认使用 Waterfox，虽然我觉得我没有得到任何有用的信息。我使用了 Chrome，它给了我一条关于授权按钮为空的有用错误消息。我不得不将authorizeButton（我通过删除camelCase使其正确）直接移动到函数中，一切正常。
默认情况下，我还禁用了第三方 cookie，我也没有得到任何有用的信息。我从字面上慢慢地重新创建了 Waterfox 配置文件，直到我到达首选项文件并最终确定该首选项是第三方cookie，启用它们，然后一切又恢复了。
