Gmail API:发送邮件时出现400个错误请求(PHP代码) - Gmail API: 400 bad request when trying to send an email (PHP code)

我期望下面的代码发送电子邮件，但我只收到这个:

发生错误:调用POST出错https://www.googleapis.com/gmail/v1/users/me/messages/send:(400)不好请求

我得到一个200 OK使用谷歌开发者控制台在底部。任何帮助吗?

$client_id = '599901532082-js1r50n20q6n5mir9fo1g81qkj9kfn3j.apps.googleusercontent.com';
$service_account_name = '599901532082-js1r50n20q6n5mir9fo1g81qkj9kfn3j@developer.gserviceaccount.com';
$key_file_location = '/tmp/APIProject-cb6558ba6435.p12';
$client = new 'Google_Client();
$client->setApplicationName("Client_Library_Examples");
$service = new 'Google_Service_Gmail($client);  
if (isset($_SESSION['service_token'])) {
  $client->setAccessToken($_SESSION['service_token']);
}
$key = file_get_contents($key_file_location);
$cred = new 'Google_Auth_AssertionCredentials(
  $service_account_name,
  array('https://www.googleapis.com/auth/gmail.send', 'https://www.googleapis.com/auth/gmail.compose'),
  $key
);
$client->setAssertionCredentials($cred);
if ($client->getAuth()->isAccessTokenExpired()) {
  $client->getAuth()->refreshTokenWithAssertion($cred);
}
//check if you want the validity of this string at: http://www.komeil.com/toolbox/base64decoder
//it is web safe base64 encoded email
$mime = "RnJvbTogSm9obiBEb2UgPHRpcmVuZ2FyZmlvQGdtYWlsLmVzPiANClRvOiBNYXJ5IFNtaXRoIDx0aXJlbmdhcmZpb0BnbWFpbC5jb20-IA0KU3ViamVjdDogU2F5aW5nIEhlbGxvIA0KRGF0ZTogRnJpLCAyMSBOb3YgMTk5NyAwOTo1NTowNiAtMDYwMCANCk1lc3NhZ2UtSUQ6IDwxMjM0QGxvY2FsLm1hY2hpbmUuZXhhbXBsZT4NCg0KVGhpcyBpcyBhIG1lc3NhZ2UganVzdCB0byBzYXkgaGVsbG8uIFNvLCAiSGVsbG8iLg==";

$service = new 'Google_Service_Gmail($client);
$msg = new 'Google_Service_Gmail_Message();
$msg->setRaw($mime);
try {
  $results = $service->users_messages->send("me", $msg);
  print 'Message with ID: ' . $message->getId() . ' sent.';
  return $message;
} catch ('Exception $e) {
  print 'An error occurred: ' . $e->getMessage();
}

编辑:

这是请求对象。它还包括响应数据:

object(Google_Http_Request)[508]
  private 'batchHeaders' => 
    array (size=3)
      'Content-Type' => string 'application/http' (length=16)
      'Content-Transfer-Encoding' => string 'binary' (length=6)
      'MIME-Version' => string '1.0' (length=3)
  protected 'queryParams' => 
    array (size=0)
      empty
  protected 'requestMethod' => string 'POST' (length=4)
  protected 'requestHeaders' => 
    array (size=3)
      'content-type' => string 'application/json; charset=UTF-8' (length=31)
      'authorization' => string 'Bearer ya29.8gEUMiBLfxS8OLdSmpiQ-EcumeATo2qFAfPtPqwTw9fQ2zVrfZaA1X5OLoBmQccrXr8V8g' (length=82)
      'accept-encoding' => string 'gzip' (length=4)
  protected 'baseComponent' => string 'https://www.googleapis.com' (length=26)
  protected 'path' => string '/gmail/v1/users/me/messages/send' (length=32)
  protected 'postBody' => string '{"raw":"RnJvbTogSm9obiBEb2UgPHRpcmVuZ2FyZmlvQGdtYWlsLmVzPg0KVG86IE1hcnkgU21pdGggPHRpcmVuZ2FyZmlvQGdtYWlsLmNvbT4NClN1YmplY3Q6IFNheWluZyBIZWxsbw0KDQpUaGlzIGlzIGEgbWVzc2FnZSBqdXN0IHRvIHNheSBoZWxsby4gU28sICdIZWxsbycu"}' (length=214)
  protected 'userAgent' => string 'Client_Library_Examples google-api-php-client/1.0.6-beta (gzip)' (length=63)
  protected 'canGzip' => boolean true
  protected 'responseHttpCode' => null
  protected 'responseHeaders' => null
  protected 'responseBody' => null
  protected 'expectedClass' => string 'Google_Service_Gmail_Message' (length=28)
  public 'accessKey' => null
object(Google_Http_Request)[508]
  private 'batchHeaders' => 
    array (size=3)
      'Content-Type' => string 'application/http' (length=16)
      'Content-Transfer-Encoding' => string 'binary' (length=6)
      'MIME-Version' => string '1.0' (length=3)
  protected 'queryParams' => 
    array (size=0)
      empty
  protected 'requestMethod' => string 'POST' (length=4)
  protected 'requestHeaders' => 
    array (size=4)
      'content-type' => string 'application/json; charset=UTF-8' (length=31)
      'authorization' => string 'Bearer ya29.8gEUM***fxS8OLdSmpiQ-EcumeATo2qFAfPtPqwTw9fQ2zVrfZaA1X5OLoBmQccrXr8V8g' (length=82)
      'accept-encoding' => string 'gzip' (length=4)
      'content-length' => int 214
  protected 'baseComponent' => string 'https://www.googleapis.com' (length=26)
  protected 'path' => string '/gmail/v1/users/me/messages/send' (length=32)
  protected 'postBody' => string '{"raw":"RnJvbTogSm9obiBEb2UgPHRpcmVuZ2FyZmlvQGdtYWlsLmVzPg0KVG86IE1hcnkgU21pdGggPHRpcmVuZ2FyZmlvQGdtYWlsLmNvbT4NClN1YmplY3Q6IFNheWluZyBIZWxsbw0KDQpUaGlzIGlzIGEgbWVzc2FnZSBqdXN0IHRvIHNheSBoZWxsby4gU28sICdIZWxsbycu"}' (length=214)
  protected 'userAgent' => string 'Client_Library_Examples google-api-php-client/1.0.6-beta (gzip)' (length=63)
  protected 'canGzip' => boolean true
  protected 'responseHttpCode' => int 400
  protected 'responseHeaders' => 
    array (size=13)
      'vary' => string 'Origin
X-Origin' (length=15)
      'content-type' => string 'application/json; charset=UTF-8' (length=31)
      'content-encoding' => string 'gzip' (length=4)
      'date' => string 'Fri, 18 Sep 2015 08:34:25 GMT' (length=29)
      'expires' => string 'Fri, 18 Sep 2015 08:34:25 GMT' (length=29)
      'cache-control' => string 'private, max-age=0' (length=18)
      'x-content-type-options' => string 'nosniff' (length=7)
      'x-frame-options' => string 'SAMEORIGIN' (length=10)
      'x-xss-protection' => string '1; mode=block' (length=13)
      'server' => string 'GSE' (length=3)
      'alternate-protocol' => string '443:quic,p=1' (length=12)
      'alt-svc' => string 'quic=":443"; p="1"; ma=604800' (length=29)
      'transfer-encoding' => string 'chunked' (length=7)
  protected 'responseBody' => string '{
 "error": {
  "errors": [
   {
    "domain": "global",
    "reason": "failedPrecondition",
    "message": "Bad Request"
   }
  ],
  "code": 400,
  "message": "Bad Request"
 }
}
' (length=179)
  protected 'expectedClass' => string 'Google_Service_Gmail_Message' (length=28)
  public 'accessKey' => null

终于可以用你的代码发送邮件了:

我想你对GMail的API有一点误解。

要使用它，必须对API进行身份验证。有两种方法可以做到这一点:

使用OAuth -服务器重定向用户到谷歌的服务器，在那里他们可以登录，授予权限给你的应用程序，并传递一个令牌回给你
服务帐户。这些有一点复杂:
- 首先，你必须设置一个应用程序(完成)
- 其次，您必须设置一个服务帐户。这就是你的应用程序向谷歌验证的方式。您已经完成了，并且您获得的证书包含用于身份验证的私钥
- 第三，用户需要授予您的应用程序访问权限以代表他们进行操作。这是你还没有完成的点。

所以你当前尝试的是从服务帐户发送邮件，但这是而不是一个GMail帐户。

开发者控制台使用OAuth方法，所以尝试这个没有问题。

还请注意:使用常规GMail帐户，您可以不使用"服务帐户"。你必须使用OAuth。要使用服务帐户，您需要是Google Apps的客户。

我不会在这里讨论OAuth授权，因为它是完全不同的，而且有很多的例子。

授予您的服务帐户权限，以代表您的gmail/Google Apps帐户发送邮件，请遵循这个文档。对于One or More API Scopes，你必须输入https://mail.google.com/,https://www.googleapis.com/auth/gmail.modify,https://www.googleapis.com/auth/gmail.compose,https://www.googleapis.com/auth/gmail.send .

设置好之后，就可以发送邮件了，只需修改代码如下:

$results = $service->users_messages->send("me", $msg);

不起作用，因为'me'指的是不能发送邮件的服务帐户(见上文)。将me替换为需要发送邮件的帐号的用户id (mail-address):

$results = $service->users_messages->send("senders_mail@domain.com", $msg);

然后，你需要添加

$cred->sub = 'senders_mail@domain.com';

下面的

$cred = new 'Google_Auth_AssertionCredentials(
  $service_account_name,
  array('https://www.googleapis.com/auth/gmail.send', 'https://www.googleapis.com/auth/gmail.compose'),
  $key
);

还请注意，try...catch块中的$message应该是$msg。

下面，你会发现完整的，为我工作的代码:

<?php
require_once realpath(dirname(__FILE__) . '/../src/Google/autoload.php');
$client_id = '*censored*.apps.googleusercontent.com';
$service_account_name = '*censored*@developer.gserviceaccount.com';
$key_file_location = '/tmp/apiKey.p12';

$userid_from='*censored*';
$client = new 'Google_Client();
$client->setApplicationName("Client_Library_Examples");

//hmmm, really don't know whether these lines are necessary
if (isset($_SESSION['service_token'])) {
  $client->setAccessToken($_SESSION['service_token']);
}
$key = file_get_contents($key_file_location);
$cred = new 'Google_Auth_AssertionCredentials(
  $service_account_name,
  array('https://www.googleapis.com/auth/gmail.send', 'https://www.googleapis.com/auth/gmail.compose', 'https://www.googleapis.com/auth/gmail.modify','https://www.googleapis.com/auth/gmail.readonly'),
  $key
);
$cred->sub=$userid_from; //<-- Important!
$client->setAssertionCredentials($cred);
if ($client->getAuth()->isAccessTokenExpired()) {
  $client->getAuth()->refreshTokenWithAssertion($cred);
}
//check if you want the validity of this string at: http://www.komeil.com/toolbox/base64decoder
//it is web safe base64 encoded email
$mime = "*censored*, same content as you posted, but another recipient ;-)";

$service = new 'Google_Service_Gmail($client);
$msg = new 'Google_Service_Gmail_Message();
$msg->setRaw($mime);
try {
  $results = $service->users_messages->send($userid_from, $msg);
  print 'Message with ID: ' . $results->id . ' sent.';
} catch ('Exception $e) {
  print 'An error occurred: ' . $e->getMessage();
}

如果还有什么问题，请提出来!

要让我的服务帐户客户端正常工作，我需要做的一件事不是很明显，就是添加以下内容:

// you MUST do this to avoid 400 error
$user_to_impersonate = 'junk@example.net';
$client->setSubject($user_to_impersonate);

我想你忘记将$client_id分配给$client变量了。

$client = new Google_Client();
$client->setApplicationName('Gmail API test');
$client->setDeveloperKey('<YOUR_API_KEY>');
$client->setClientSecret('<YOUR_CLIENT_SECRET>');
$client->SetClientId('599901532082-js1r50n20q6n5mir9fo1g81qkj9kfn3j.apps.googleusercontent.com');
$client->setScopes(array('https://www.googleapis.com/auth/gmail.send'));
$client->setAccessToken('{"access_token":"<YOUR_ACCESS_TOKEN>",
                          "token_type":"Bearer"‌,"expires_in":3600,
                          "refresh_token":"<YOUR_REFRESH_TOKEN>","created":12344556}');
$service = new Google_Service_Gmail($client);
$raw = "RnJvbTogSm9obiBEb2UgPHRpcmVuZ2FyZmlvQGdtYWlsLmVzPiANClRvOiBNYXJ5IFNtaXRoIDx0aXJlbmdhcmZpb0BnbWFpbC5jb20-IA0KU3ViamVjdDogU2F5aW5nIEhlbGxvIA0KRGF0ZTogRnJpLCAyMSBOb3YgMTk5NyAwOTo1NTowNiAtMDYwMCANCk1lc3NhZ2UtSUQ6IDwxMjM0QGxvY2FsLm1hY2hpbmUuZXhhbXBsZT4NCg0KVGhpcyBpcyBhIG1lc3NhZ2UganVzdCB0byBzYXkgaGVsbG8uIFNvLCAiSGVsbG8iLg==";
$msg = new Google_Service_Gmail_Message();
$msg->setRaw($raw);
$results = $service->users_messages->send("me", $msg);
print 'Message with ID: ' . $message->getId() . ' sent.';

这是一个完整的工作示例，只需确保更改所有适当的信息并使用PHPMailer来格式化有效的邮件。

<?php
// this the link to gmail-api-client or whatever you have...
require 'vendor/autoload.php';
// download PHPMailer
// https://github.com/PHPMailer/PHPMailer and uncomment the line below.
// require 'PHPMailer/PHPMailerAutoload.php';
define('FROM', 'aseptik@gmail.com'); //email of sender
define('TO', 'XXXXXXX@XXXXX.com');//email of receiver
$client_email = 'XXXXX@developer.gserviceaccount.com';
$private_key = file_get_contents('tmp/XXXXXXX.p12');
$scopes = array(
    'https://www.googleapis.com/auth/gmail.send',
    'https://www.googleapis.com/auth/gmail.compose'
);
$credentials = new 'Google_Auth_AssertionCredentials($client_email, $scopes, $private_key);
$credentials->sub = FROM;
$client = new Google_Client();
$client->setAssertionCredentials($credentials);
if ($client->getAuth()->isAccessTokenExpired()) {
    $client->getAuth()->refreshTokenWithAssertion();
}
function create_message() {
    $mail = new PHPMailer();
    $mail->setFrom(FROM, 'John Doe 1');
    $mail->addAddress(TO, 'John Doe 2');
    $mail->Subject = 'Saying Hello';
    $mail->Body = 'This is a message just to say hello. So, "Hello"';
    $mail->preSend();
    $mime = $mail->getSentMIMEMessage();
    return urlsafe_b64encode($mime);
}
function sendMessage($service, $userId, $message) {
    try {
        $message = $service->users_messages->send($userId, $message);
        print 'Message with ID: ' . $message->getId() . ' sent.';
        return $message;
    }
    catch(Exception $e) {
        print 'An error occurred: ' . $e->getMessage();
    }
}
function urlsafe_b64encode($string) {
    $data = base64_encode($string);
    $data = str_replace(array('+','/','=') , array('-','_','') , $data);
    return $data;
}
$service = new 'Google_Service_Gmail($client);
$msg = new 'Google_Service_Gmail_Message();
$msg->setRaw(create_message());
sendMessage($service, 'me', $msg);
?>

use URL Endocde in string and URL .