php - Sendgrid 错误 400 错误请求

Question

尝试通过 SendGrid 发送电子邮件时收到此错误消息:

400 { "errors": [ { "message": "Bad Request", "field": null, "help": null } ] } array(14) { [0]=> string(25) "HTTP/1.1 400 Bad Request " [1]=> string(14) "Server: nginx " [2]=> string(36) "Date: Sat, 11 Mar 2017 19:20:44 GMT " [3]=> string(31) "Content-Type: application/json " [4]=> string(19) "Content-Length: 63 " [5]=> string(23) "Connection: keep-alive " [6]=> string(22) "X-Frame-Options: DENY " [7]=> string(58) "Access-Control-Allow-Origin: https://sendgrid.api-docs.io " [8]=> string(35) "Access-Control-Allow-Methods: POST " [9]=> string(87) "Access-Control-Allow-Headers: Authorization, Content-Type, On-behalf-of, x-sg-elas-acl " [10]=> string(28) "Access-Control-Max-Age: 600 " [11]=> string(75) "X-No-CORS-Reason: https://sendgrid.com/docs/Classroom/Basics/API/cors.html " [12]=> string(1) " " [13]=> string(0) "" }

这是我的代码:

<?php

// If you are using Composer
require 'vendor/autoload.php';

use SendGrid\Mail;

$apiKey = 'mykey';
$sg = new \SendGrid($apiKey);
$email = new SendGrid\Email("Me", "<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="523f333b3e12353f333b3e7c313d3f" rel="noreferrer noopener nofollow">[email protected]</a>");

$mail = new SendGrid\Mail();
$mail->setFrom($email);
$mail->setSubject("Attachment Test");
$p = new \SendGrid\Personalization();
$p->addTo($email);
$c = new \SendGrid\Content("text/plain", "Hi");
$mail->addPersonalization($p);
$mail->addContent($c);

$att1 = new \SendGrid\Attachment();
$att1->setContent( file_get_contents("favicon.ico") );
$att1->setType("text/plain");
$att1->setFilename("1.txt");
$att1->setDisposition("attachment");
$mail->addAttachment( $att1 );

$response = $sg->client->mail()->send()->post($mail);

echo $response->statusCode() . "\n";
echo json_encode( json_decode($response->body()), JSON_PRETTY_PRINT) . "\n";
var_dump($response->headers());
?>

不确定是否与附件有关。我设法使用不同的代码发送电子邮件，但我正在尝试为其添加附件，因此这是新代码。我不太了解 php，所以我有点迷失这个错误意味着什么。

Answer 1

您收到的错误是由附件引起的。

文件的内容必须采用 base64 编码。否则，由于您将随机字节引入到请求正文中，它会使 JSON 格式错误。

您可以看到，在 sendgrid-php 邮件助手的完整示例中，base64 字符串被设置为附件的内容。 https://github.com/sendgrid/sendgrid-php/blob/master/examples/helpers/mail/example.php#L83

正如您在 Attachment 类中看到的，内容只是简单地设置，并且在类序列化时将序列化为 JSON 对象中的字符串: https://github.com/sendgrid/sendgrid-php/blob/master/lib/helpers/mail/Mail.php#L670

您只需要使用这个功能:http://php.net/manual/en/function.base64-encode.php

要更改线路:

$att1->setContent( file_get_contents("favicon.ico") );

致:

$att1->setContent( base64_encode( file_get_contents("favicon.ico") ) );

v3 邮件发送文档位于:https://sendgrid.com/docs/API_Reference/Web_API_v3/Mail/index.html

如果您向下滚动到“附件”对象并展开“内容”字段，它将显示其要求，主要:附件的 Base64 编码内容。