aws sns确认订阅请求处理问题

问题描述

我正在尝试为s3中的存储桶实施aws sns服务，我正在遵循此文档 https://docs.aws.amazon.com/sns/latest/dg/SendMessageToHttp.html 据此，在确认订阅的请求中将有订阅URL，该订阅URL即将到达我们提供的URL，但是我在请求中接收到空的正文.我试图记录尸体，但给了我一个空的物体.并尝试使用bodyparser，但结果相同.

I am trying to implement the aws sns service for a bucket in s3 and i am following this document https://docs.aws.amazon.com/sns/latest/dg/SendMessageToHttp.htmlaccording to this there will be subscribe url in the request for the confirmation subscription which will be coming to the url that we provide, but i am receiving empty body in the request.I tried to log the body but gave me an empty object. and tried by using the bodyparser but same result.

这是我正在实施的路线.

here is my route that i am implementing.

 router.post("/s3FileCallback", function (req, res) {
      debugger;
      var bodyParser = require('body-parser');
      var app = express();
      app.use(bodyParser.urlencoded({ extended: false }));
      app.use(bodyParser.json())
      if (req.get("x-amz-sns-message-type") == "SubscriptionConfirmation") {
        console.log("arn" + req.get("x-amz-sns-topic-arn"));
        const subscribeUrl = req.body.SubscribeURL;
        console.log("subscribeUrl" + subscribeUrl);
})

有什么我想念的东西吗?谁能指出我的正确方向?

is there any thing i am missing. can any one point me in right direction please.

推荐答案

我发现了我所缺少的，

router.post('/s3FileCallback', function(req, res) {
    debugger;
    if (req.get('x-amz-sns-message-type') == 'SubscriptionConfirmation') {
        console.log('arn' + req.get('x-amz-sns-topic-arn'));
        const subscribeUrl = req.body.SubscribeURL;
        console.log('subscribeUrl' + subscribeUrl);
    }
});

我正在使用正文解析器作为中间件，亚马逊在帖子请求中以文本\纯文本的形式发送内容类型，感谢这个论坛，直到我遇到这个问题，我才意识到类型 https://forums.aws.amazon.com/message.jspa? messageID = 261061#262098

I am using body parser as a middleware,amazon is sending content-type as text\plain in the post request thanks for this forum i did not realize the type until i cam accross thishttps://forums.aws.amazon.com/message.jspa?messageID=261061#262098

因此尝试了一些解决方法，以在使用bodyparser之前更改标头

so tried a work around to change the header before using the bodyparser

app.use(function(req, res, next) {
    if (req.get('x-amz-sns-message-type')) {
        req.headers['content-type'] = 'application/json';
    }
    next();
});
app.use(bodyParser.json({ limit: '50mb' }));
app.use(bodyParser.urlencoded({ limit: '50mb', extended: false }));

所以现在req被解析为json.

so now the req is parsed as json.

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