为什么我的 Express 服务器收到“404 cannot POST”错误？

Question

so i have an express server that i'm using to handle webhook updates.所以我有一个用于处理 webhook 更新的快速服务器。 i have it running on a port, and that port i have a server config for a ProxyPass at a subpage of a domain (domain.com/help/webhook).我让它在一个端口上运行，并且该端口在域的子页面 (domain.com/help/webhook) 上有一个 ProxyPass 的服务器配置。

<Location /help/webhook>
   ProxyPass  http://localhost:PORT/
   ProxyPassReverse http://localhost:PORT/
</Location>

and i can get the root route just fine (it'll send back a 200 response with some text).而且我可以很好地获得根路由（它会发回带有一些文本的 200 响应）。 but when i try to make a POST to the other route (domain.com/help/webhook/update) i get a 404 cannot POST //update error back.但是当我尝试向另一条路线 (domain.com/help/webhook/update) 发送POST时，我收到 404 cannot POST //update错误返回。 here's my code:这是我的代码：

require('dotenv').config();
let child_process = require('child_process'),
user = process.env.GITHUB_USER,
port = process.env.WEBHOOK_PORT;

let app = require('express')();

app.get('/', (req, res) => {
        res.status(200).send('this is the cherwell app webhook endpoint. nothing to see here.');
});

app.post('/update', (req, res) => {
        let sender = req.body.sender,
        branch = req.body.ref;
        console.log('request received');
        if(branch.indexOf('master') > -1 && sender.login === user) {
                child_process.exec('./deploy.sh', (err, stdout, stderr) => {
                        if(err) {
                                console.error(err);
                                return res.send(500);
                        } else {
                                console.log('success');
                                res.send(200);
                        }
                });
        }
});

app.listen(port);

in GitHub, setting up the webhook and delivering the payload, this is the response:在 GitHub 中，设置 webhook 并传送有效载荷，这是响应：

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Error</title>
</head>
<body>
<pre>Cannot POST //update</pre>
</body>
</html>

any idea what this issue might be?知道这个问题可能是什么吗？ i wrote this from a tutorial on webhooks online, and it seemed simple enough though it being my first time deploying an app, i may be missing something either on the server configuration side or in my express code.我是根据 webhooks 在线教程写的，虽然这是我第一次部署应用程序，但它看起来很简单，我可能在服务器配置端或我的 express 代码中遗漏了一些东西。 i dunno which.我不知道哪个。

thanks for the help in advance!我在这里先向您的帮助表示感谢！

Answer 1

It seems that the URL that is being posted to is //update rather than /update .似乎要发布到的 URL 是//update而不是/update 。 You should add a trailing slash to your location argument.您应该在 location 参数中添加一个尾部斜杠。

From the docs on mod_proxy :从mod_proxy上的文档：

If the first argument ends with a trailing /, the second argument should also end with a trailing /, and vice versa.如果第一个参数以尾随 / 结尾，则第二个参数也应以尾随 / 结尾，反之亦然。 Otherwise, the resulting requests to the backend may miss some needed slashes and do not deliver the expected results.否则，对后端产生的请求可能会错过一些需要的斜杠，并且不会交付预期的结果。

https://httpd.apache.org/docs/2.4/mod/mod_proxy.html#proxypass https://httpd.apache.org/docs/2.4/mod/mod_proxy.html#proxypass

为什么我的 Express 服务器收到“404 cannot POST”错误？

问题描述

1 个解决方案

解决方案1
2 已采纳 2020-01-21 19:33:20

为什么我的 Express 服务器收到“404 cannot POST”错误？

问题描述

1 个解决方案

解决方案1 2 已采纳 2020-01-21 19:33:20

解决方案1
2 已采纳 2020-01-21 19:33:20