对除特定路径之外的所有路径使用 Express 中的特定中间件 [英] Use specific middleware in Express for all paths except a specific one

问题描述

我在 node.js 中使用 Express 框架和一些中间件功能:

I am using the Express framework in node.js with some middleware functions:

var app = express.createServer(options);
app.use(User.checkUser);

我可以使用带有附加参数的 .use 函数来仅在特定路径上使用此中间件:

I can use the .use function with an additional parameter to use this middleware only on specific paths:

app.use('/userdata', User.checkUser);

是否可以使用路径变量，以便将中间件用于除特定路径(即根路径)之外的所有路径?

Is it possible to use the path variable so that the middleware is used for all paths except a specific one, i.e. the root path?

我正在考虑这样的事情:

I am thinking about something like this:

app.use('!/', User.checkUser);

所以 User.checkUser 总是被调用，除了根路径.

So User.checkUser is always called except for the root path.

推荐答案

我会将 checkUser 中间件添加到我的所有路径中，除了主页.

I would add checkUser middleware to all my paths, except homepage.

app.get('/', routes.index);
app.get('/account', checkUser, routes.account);

或

app.all('*', checkUser);
    
function checkUser(req, res, next) {
  if ( req.path == '/') return next();

  //authenticate user
  next();
}

您可以扩展它以在未经身份验证的路径数组中搜索 req.path:

You could extend this to search for the req.path in an array of non-authenticated paths:

function checkUser(req, res, next) {
  const nonSecurePaths = ['/', '/about', '/contact'];
  if (nonSecurePaths.includes(req.path)) return next();

  //authenticate user
  next();
}

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