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AWS API网关返回400错误请求，但Postman正常工作

[英]AWS API gateway returns 400 Bad Request, but Postman works fine

原文 2016-05-02 11:56:02 1 1 javascript/ amazon-web-services/ sendgrid/ aws-lambda/ aws-api-gateway

I am using the SendGrid Parse API ( https://sendgrid.com/blog/parse-webhook-tutorial/ ) to get incoming email bodies POSTed to an AWS API Gateway. 我正在使用SendGrid Parse API（ https://sendgrid.com/blog/parse-webhook-tutorial/ ）将传入的电子邮件正文过帐到AWS API Gateway。

When I send the webhook to requestb.in I get the responses fine. 当我将webhook发送到requestb.in时，我得到的响应很好。

When I use Postman to fake a request to my server I get a proper response. 当我使用Postman伪造对服务器的请求时，我得到了正确的响应。

When I tell SendGrid to send the webhook to my server, however, I get a 400 Bad Response error from SendGrid and my server never gets hit (so I assume the API Gateway is throwing the error). 但是，当我告诉SendGrid将Webhook发送到我的服务器时，我收到来自SendGrid的400错误响应错误，并且我的服务器再也没有命中（因此，我认为API网关抛出了错误）。

Is there something simple I'm missing? 有什么简单的我想念的吗？ I tried setting up CORS but that wasn't it (or I set it up wrong). 我尝试设置CORS，但不是（或者我设置错了）。

I'm stumped. 我很沮丧

Thanks! 谢谢！

1 个解决方案

I just debugged an API Gateway issue that was throwing an error message related to CORS and the request was never hitting my server, but the real issue was stemming from the data in the request. 我刚刚调试了一个API网关问题，该问题引发了与CORS相关的错误消息，并且该请求从未到达我的服务器，但真正的问题是来自请求中的数据。

So I have found out that if there is any issue with a request API Gateway will throw a default 400 error saying there was no Allow-Access-Control-Origin header. 因此我发现，如果请求存在任何问题，API网关将抛出默认的400错误，表明没有Allow-Access-Control-Origin标头。 This can make you believe you have an issue with your CORS. 这可以使您认为CORS存在问题。 You can eliminate CORS as an issue if you set up a MOCK GET request, make the request in the browser, and verify it returns 200 in the network tab in the browser developer tools. 如果您设置MOCK GET请求，在浏览器中发出请求，并在浏览器开发人员工具的“网络”标签中确认它返回200，则可以消除CORS的问题。

Once I knew it was coming from only the POST requests it had to be an issue with the data. 一旦我知道它仅来自POST请求，就必然是数据问题。 I was sending a JSON hash without stringifying it. 我发送的JSON哈希值未经过字符串化处理。 So the solution was to use JSON.stringify(request_data) . 因此解决方案是使用JSON.stringify(request_data) 。

I would check the data format of the requests. 我会检查请求的数据格式。 If you add the requests and responses to your question I might be able to help further. 如果您将请求和回答添加到您的问题中，我也许可以提供进一步的帮助。