Question

我需要帮助了解Gmails API以及如何在下面修复我的脚本。我已经浏览了Stack上的每个帖子和Gmail上的所有文档，试图找出如何使用超过5 Mb附件的api发送电子邮件。

这是我的脚本。如果附件小于5Mb，这可以正常工作。它过了一瞬间，我得到413错误。

请求实体太大错误413

    # set up the google client...
    $client = new Google_Client();
    $client->setApplicationName("My App");
    $client->setAuthConfig($array['credentials']);

    # create new gmail service...
    $gmail = new \Google_Service_Gmail($client);

    # set the content...
    $strRawMessage = "";
    $boundary = uniqid(rand(), true);
    $subjectCharset = $charset = 'utf-8';
    $strMailContent = 'Test Message Body...';
    $strMailContent = quoted_printable_encode( $strMailContent );
    $strSubject = 'Test Message Subject...';

    # set up who the message is being sent to...
    $to[] = $this->encodeRecipients('You' . " <you@gmail.com>");
    $strRawMessage .= "To: " . implode(", ", $to) . "\r\n";

    # set the subject...
    $strRawMessage .= 'Subject: =?' . $subjectCharset . '?B?' . base64_encode($strSubject) . "?=\r\n";
    $strRawMessage .= 'MIME-Version: 1.0' . "\r\n";
    $strRawMessage .= 'Content-type: Multipart/Mixed; boundary="' . $boundary . '"' . "\r\n";

    # set the body...
    $strRawMessage .= "\r\n--{$boundary}\r\n";
    $strRawMessage .= 'Content-Type: text/html; charset=' . $charset . "\r\n";
    $strRawMessage .= 'Content-Transfer-Encoding: quoted-printable' . "\r\n\r\n";
    $strRawMessage .= $strMailContent . "\r\n";

    # loop over the attachments...
    $attachments[] = [
        'url'=>'https://s3-us-west-2.amazonaws.com/xyz/bugfiles/Pizigani_1367_Chart_10MB.jpg',
        'name'=>'Pizigani_1367_Chart_10MB.jpg',
        'size'=>'10Mb'
    ];
    foreach($attachments as $attachment){

        # get the file info...
        $url = $attachment['url'];
        $ch = curl_init($url);
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_exec($ch);
        $mimeType = curl_getinfo($ch, CURLINFO_CONTENT_TYPE);
        $fileSize = curl_getinfo($ch, CURLINFO_CONTENT_LENGTH_DOWNLOAD);
        $path = parse_url($url, PHP_URL_PATH);
        $filename = substr($path, strrpos($path, '/') + 1); # $attachment['name'];

        # add it as an attachment to the email...
        $strRawMessage .= "\r\n--{$boundary}\r\n";
        $strRawMessage .= 'Content-Type: '. $mimeType .'; name="'. $filename .'";' . "\r\n";
        $strRawMessage .= 'Content-Description: ' . $filename . ';' . "\r\n";
        $strRawMessage .= 'Content-Disposition: attachment; filename="' . $attachment['name'] . '-' . $filename . '"; size=' . $fileSize. ';' . "\r\n";
        $strRawMessage .= 'Content-Transfer-Encoding: base64' . "\r\n\r\n";
        $strRawMessage .= chunk_split(base64_encode(file_get_contents($url)), 76, "\n") . "\r\n";
        $strRawMessage .= '--' . $boundary . "\r\n";
    }

    try {

        # Prepare the message in message/rfc822
        $mime = rtrim(strtr(base64_encode($strRawMessage), '+/', '-_'), '=');
        $msg = new \Google_Service_Gmail_Message();
        $msg->setRaw($mime);

        # send the message...
        $message = $gmail->users_messages->send("me", $msg);

        echo '<pre>';
        print_r($message);
        echo '</pre>';
        die;

    } catch (\Exception $e) {
        echo '<pre>';
        print_r($e->getMessage());
        echo '</pre>';
        die;
    }

我不明白的是，在Gmails文档中，它说在上传附件时使用此URL。

 POST https://www.googleapis.com/upload/gmail/v1/users/userId/messages/send?uploadType=multipart

或者说它使用这个URL更可靠......

 POST https://www.googleapis.com/upload/gmail/v1/users/userId/messages/send?uploadType=resumable

我看不到的是我甚至会使用该网址。不在课程中的哪个位置（Google_Client，Google_Service_Gmail，Google_Service_Gmail_Message）甚至可以使用该选项。

如果您具备使我的脚本发送25 MB附件所需的技能，我愿意付钱帮助我解决此问题。

感谢。

Answer 1

您遇到与Google documentations 中发现的类似错误。请尝试使用：分段上传：uploadType=multipart或可恢复上传：uploadType=resumable

并且据说这应该是如何工作的

# send the message...
$message = $gmail->users_messages->send("me", $msg, ['uploadType' => 'multipart']);

如果需要api参考link

Answer 2

Google API对某些内容非常严格。您正在使用的方法（users / SendMessage）的限制是正确的，根据documentation限制为35MB。实际上使用MIME TYPE multipart发布，在某些情况下（几乎所有）将文件大小扩展为double。例如，如果您上传的文件大小为20MB，则最终可能会达到40MB左右，因此Google会返回该错误，因为最终他们会收到大于文件大小限制的文件。

Gmail API PHP - 请求实体太大错误413

2 个答案: