PHP：Google plus Oauth 2.0 - 获取OAuth2访问令牌时出错，消息：'invalid_client'
[英]PHP : Google plus Oauth 2.0 - Getting Error fetching OAuth2 access token, message: 'invalid_client'
问题描述
Working on Sign in with Google , using PHP Lib v2, Oauth 2.0 . 
使用PHP Lib v2，Oauth 2.0 ，使用Google登录 。
After long time spending on it finally I configured, it worked once fine but after that it is not working. 经过很长一段时间花在它上面我最终配置，它工作一次很好，但之后它没有工作。 On the clicking of sign in link, it will take user for authentication to Google. 点击登录链接后，用户需要对Google进行身份验证。 Working fine till then authentication done. 工作正常，直到认证完成。
At the time of callback with GET variables: 在使用GET变量回调时：
?code=something&authuser=0&prompt=consent&session_state=something
It is generating following error: 它产生以下错误：
Fatal error: Uncaught exception 'Google_AuthException' with message 'Error fetching OAuth2 access token, message: 'invalid_client'' in C:\\xampp\\htdocs\\test\\google-api-php-client\\src\\auth\\Google_OAuth2.php:115 Stack trace: #0 C:\\xampp\\htdocs\\test\\google-api-php-client\\src\\Google_Client.php(127): Google_OAuth2->authenticate(Array, 4/xUGSPbXR0LNzW...') #1 C:\\xampp\\htdocs\\test\\google-api-php-client\\index.php(40): Google_Client->authenticate('4/xUGSPbXR0LNzW...') #2 {main} thrown in C:\\xampp\\htdocs\\test\\google-api-php-client\\src\\auth\\Google_OAuth2.php on line 115
Using following code (it will help you to understand): 使用以下代码（它将帮助您理解）：
<?php
ini_set('display_errors',1);
error_reporting(E_ALL);
require_once 'src/Google_Client.php';
require_once 'src/contrib/Google_PlusService.php';
session_start();
$client = new Google_Client();
$client->setApplicationName("Google+ PHP Starter Application");
$plus = new Google_PlusService($client);
if (isset($_REQUEST['logout'])) {
unset($_SESSION['access_token']);
}
if (isset($_GET['code'])) {
$client->authenticate($_GET['code']);
$_SESSION['access_token'] = $client->getAccessToken();
header('Location: http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']);
}
if (isset($_SESSION['access_token'])) {
$client->setAccessToken($_SESSION['access_token']);
}
if ($client->getAccessToken()) {
$me = $plus->people->get('me');
$url = filter_var($me['url'], FILTER_VALIDATE_URL);
$img = filter_var($me['image']['url'], FILTER_VALIDATE_URL);
$name = filter_var($me['displayName'], FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$personMarkup = "<a rel='me' href='$url'>$name</a><div><img src='$img'></div>";
$optParams = array('maxResults' => 100);
$activities = $plus->activities->listActivities('me', 'public', $optParams);
$activityMarkup = '';
foreach($activities['items'] as $activity) {
$url = filter_var($activity['url'], FILTER_VALIDATE_URL);
$title = filter_var($activity['title'], FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$content = filter_var($activity['object']['content'], FILTER_SANITIZE_STRING, FILTER_FLAG_STRIP_HIGH);
$activityMarkup .= "<div class='activity'><a href='$url'>$title</a><div>$content</div></div>";
}
$_SESSION['access_token'] = $client->getAccessToken();
} else {
$authUrl = $client->createAuthUrl();
}
?>
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<link rel='stylesheet' href='style.css' />
<body>
<header><h1>Google+ Sample App</h1></header>
<div class="box">
<?php if(isset($personMarkup)): ?>
<div class="me"><?php print $personMarkup ?></div>
<?php endif ?>
<?php if(isset($activityMarkup)): ?>
<div class="activities">Your Activities: <?php print $activityMarkup ?></div>
<?php endif ?>
<?php
if(isset($authUrl)) {
print "<a class='login' id='g_pop' href='$authUrl'>Connect Me!</a>";
} else {
print_r($me);
print "<a class='logout' href='?logout'>Logout</a>";
}
?>
</div>
</body>
</html>
Get source files from here: Google APIs Client Library for PHP 从此处获取源文件： 适用于PHP的Google API客户端库
Already done: 已经完成了：
- Client ID: OK 客户ID：好的
- Client secret: OK 客户秘密：好的
- Redirect URIs: OK 重定向URI：好的
- Google+ API: ON Google+ API：开启
Note: 注意：
Working on localhost. 在localhost上工作。
2 个解决方案
解决方案1
11 已采纳 2014-12-15 12:15:20
Had same issue. 有同样的问题。 Fixed it by deleting the extra space from the client secret. 通过删除客户端密钥中的额外空间来修复它。 When you copy it from google api console you get an extra space. 当您从谷歌api控制台复制它时，您将获得额外的空间。
解决方案2
3 2014-11-24 20:49:19
仔细检查您的Google应用凭据（客户端ID，客户端密钥，API密钥）是否有效并正确传递给客户端。
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