我已经用谷歌搜索了一段时间,但是找不到任何有用的答案。我正在尝试在我的网站api.example.com
上获得一个应用编程接口的子域。然而,所有的回答都说我需要更改我的域名系统,将api.example.com
重定向到example.com/api
,这是我不想要的。有没有可能不重定向到/api
而只服务于api.
?我该怎么做呢?
const path = require('path'),
http = require('http'),
https = require('https'),
helmet = require('helmet'),
express = require('express'),
app = express();
const mainRouter = require('./routers/mainRouter.js');
// security improvements
app.use(helmet());
// main pages
app.use('/', mainRouter);
// route the public directory
app.use(express.static('public'));
app.use(/* API subdomain router... */)
// 404s
app.use((req, res) => {
res.status(404).sendFile(path.join(__dirname, "views/404.html"));
})
发布于 2019-02-21 01:15:26
建议您使用nginx和单独的api服务。
但由于某些原因,你无法避免它(或者你不想要它,因为你只是想尽快向客户展示原型)。
您可以编写中间件来从报头捕获主机并将其转发到某个自定义路由器:
1) /middlewares/forwardForSubdomain.js
module.exports =
(subdomainHosts, customRouter) => {
return (req, res, next) => {
let host = req.headers.host ? req.headers.host : ''; // requested hostname is provided in headers
host = host.split(':')[0]; // removing port part
// checks if requested host exist in array of custom hostnames
const isSubdomain = (host && subdomainHosts.includes(host));
if (isSubdomain) { // yes, requested host exists in provided host list
// call router and return to avoid calling next below
// yes, router is middleware and can be called
return customRouter(req, res, next);
}
// default behavior
next();
}
};
2)以api路由器为例/routers/apiRouter.js
const express = require('express');
const router = express.Router();
router.get('/users', (req, res) => {
// some operations here
});
module.exports = router;
3)在/
处理程序之前附加中间件:
const path = require('path'),
http = require('http'),
https = require('https'),
helmet = require('helmet'),
express = require('express'),
app = express();
const mainRouter = require('./routers/mainRouter');
// security improvements
app.use(helmet());
// ATTACH BEFORE ROUTING
const forwardForSubdomain = require('./middlewares/forwardForSubdomain');
const apiRouter = require('./routers/apiRouter');
app.use(
forwardForSubdomain(
[
'api.example.com',
'api.something.com'
],
apiRouter
)
);
// main pages
app.use('/', mainRouter);
// route the public directory
app.use(express.static('public'));
// 404s
app.use((req, res) => {
res.status(404).sendFile(path.join(__dirname, "views/404.html"));
})
附注:它的功能与express-vhost包中的look at the code相同
发布于 2019-02-21 00:58:45
只将子域(api.example.com)指向您的api服务器是绝对可能的。
DNS不控制子目录,因此example.com/api
的DNS条目将无效
如果您的服务器有一个IP地址,则需要添加值为:api.example.com
的A记录。
如果您的服务器有域名,则需要创建一个CNAME记录。
https://stackoverflow.com/questions/54791634
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