重定向到express.js中的静态文件 [英] Redirecting to a static file in express.js

问题描述

在Express.java中的Express中，我想检查特定路径下的请求（例如 / restricted ），如果可以接受请求，请求由处理缓存头等的静态提供者处理。

In Express under Node.js, I'd like to inspect a request under a specific path (say, /restricted) and if it is acceptable, have the request be handled by the static provider, which handles the caching headers etc.

如果我只是使用 app.get（'/ restricted /：file' ，...）然后使用 res.sendfile 发送静态文件，如果被批准，它将忽略任何缓存头，并始终发送文件

If I simply use app.get('/restricted/:file', ...) and then use res.sendfile to send the static file if approved, it will ignore any caching headers and always send the file.

由于不同的用户只能获取不同的文件，因此我无法使用全面的登录支票。

I can't use a blanket logged-in check because different users should only get different files.

实现这个的最好方法是什么？

What is the best way to implement this?

推荐答案

var express = require("express");
var app = express.createServer();

var staticMiddleware = express.static(__dirname + "/public");

app.get("/restricted/:file", function(req, res, next) {
  var authorized = true;
  //Compute authorization appropriately here
  if (authorized) {
    staticMiddleware(req, res, next);
  } else {
    res.send(401);
  }
});
app.listen(3456);

这将在适当时使用静态中间件，包括其所有功能。否则，您可以酌情处理未经授权的请求。

This will use the static middleware when appropriate including all of its functionality. Otherwise you can handle unauthorized requests as appropriate.

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