我使用express + node.js，我有一个req对象，浏览器中的请求是/帐户，但当我日志req. js。我得到'/' -而不是'/account'。
//auth required or redirect
app.use('/account', function(req, res, next) {
console.log(req.path);
if ( !req.session.user ) {
res.redirect('/login?ref='+req.path);
} else {
next();
}
});
要求的事情。路径是/当它应该是/account ??
在某些情况下，你应该使用:
req.path
这将为您提供路径，而不是完整的请求URL。例如，如果你只对用户请求的页面感兴趣，而不关心url的所有参数:
/myurl.htm?allkinds&ofparameters=true
要求的事情。Path会给你:
/myurl.html
8年后更新:
要求的事情。path已经做了和我这里提到的完全一样的事情。我不记得这个答案是如何解决问题并被接受为正确答案的，但目前它不是一个有效的答案。请忽略这个回答。谢谢@mhodges提到这一点。
最初的回答:
如果你真的想只得到“路径”而没有querystring，你可以使用url库来解析并只得到url的路径部分。
var url = require('url');
//auth required or redirect
app.use('/account', function(req, res, next) {
var path = url.parse(req.url).pathname;
if ( !req.session.user ) {
res.redirect('/login?ref='+path);
} else {
next();
}
});
Req.route.path对我有用
var pool = require('../db');
module.exports.get_plants = function(req, res) {
// to run a query we can acquire a client from the pool,
// run a query on the client, and then return the client to the pool
pool.connect(function(err, client, done) {
if (err) {
return console.error('error fetching client from pool', err);
}
client.query('SELECT * FROM plants', function(err, result) {
//call `done()` to release the client back to the pool
done();
if (err) {
return console.error('error running query', err);
}
console.log('A call to route: %s', req.route.path + '\nRequest type: ' + req.method.toLowerCase());
res.json(result);
});
});
};
执行后，我看到以下在控制台和我得到完美的结果 在我的浏览器里。
Express server listening on port 3000 in development mode
A call to route: /plants
Request type: get
//auth required or redirect
app.use('/account', function(req, res, next) {
console.log(req.path);
if ( !req.session.user ) {
res.redirect('/login?ref='+req.path);
} else {
next();
}
});
要求的事情。路径是/当它应该是/account ??
这样做的原因是Express减去你的处理程序函数挂载的路径，在本例中是'/account'。
他们为什么要这样做?
因为这样可以更容易地重用处理程序函数。您可以为req创建一个处理程序函数来做不同的事情。Path === '/'和req. Path。Path === '/goodbye'例如:
function sendGreeting(req, res, next) {
res.send(req.path == '/goodbye' ? 'Farewell!' : 'Hello there!')
}
然后你可以将它挂载到多个端点:
app.use('/world', sendGreeting)
app.use('/aliens', sendGreeting)
给:
/world ==> Hello there!
/world/goodbye ==> Farewell!
/aliens ==> Hello there!
/aliens/goodbye ==> Farewell!
对于版本4。X你现在可以使用请求。除了req之外的baseUrl。获取完整路径。例如，OP现在会做这样的事情:
//auth required or redirect
app.use('/account', function(req, res, next) {
console.log(req.baseUrl + req.path); // => /account
if(!req.session.user) {
res.redirect('/login?ref=' + encodeURIComponent(req.baseUrl + req.path)); // => /login?ref=%2Faccount
} else {
next();
}
});
下面是一个从文档中扩展的例子，它很好地包装了所有你需要知道的关于在所有情况下使用express访问路径/ url的信息:
app.use('/admin', function (req, res, next) { // GET 'http://www.example.com/admin/new?a=b'
console.dir(req.originalUrl) // '/admin/new?a=b' (WARNING: beware query string)
console.dir(req.baseUrl) // '/admin'
console.dir(req.path) // '/new'
console.dir(req.baseUrl + req.path) // '/admin/new' (full path without query string)
next()
})
基于:https://expressjs.com/en/api.html#req.originalUrl
结论:如c1moore’s answer所述，使用:
var fullPath = req.baseUrl + req.path;
这可以产生不同的结果时，直接调用基本模块，即主文件(如index.js或app.js) vs从模块内部调用通过app.use()中间件，即路由文件(如routes/users.js)。
电话:火
http://localhost:8000/api/users/profile/123/summary?view=grid&leng=en
我们将把我们的输出与上面的API调用进行比较
1)首先，我们将看到来自模块内部的结果:
我们将把我们的用户模块放在routes目录中，只有一个路由
路线/ users.js
const router = (require('express')).Router();
router.get('/profile/:id/:details', (req, res) => {
console.log(req.protocol); // http or https
console.log(req.hostname); // only hostname (abc.com, localhost, etc)
console.log(req.headers.host); // hostname with port number (if any)
console.log(req.header('host')); // <same as above>
console.log(req.route.path); // exact defined route
console.log(req.baseUrl); // base path or group prefix
console.log(req.path); // relative path except path
console.log(req.url); // relative path with query|search params
console.log(req.originalUrl); // baseURL + url
// Full URL
console.log(`${req.protocol}://${req.header('host')}${req.originalUrl}`);
res.sendStatus(200);
});
module.exports = router;
index.js
const app = (require('express'))();
const users = require('./routes/users');
app.use('/api/users', users);
const server = require('http').createServer(app);
server.listen(8000, () => console.log('server listening'));
输出
http ....................................................................................... [protocol] localhost .............................................................................. [hostname] localhost:8000 ..................................................................... [headers.host] localhost:8000 ..................................................................... [header('host')] /profile/:id/:details ........................................................ [route.path] /api/users ............................................................................. [baseUrl] /profile/123/summary .......................................................... [path] /profile/123/summary?view=grid&leng=en ........................ [url] /api/users/profile/123/summary?view=grid&leng=en ..... [originalUrl]
完整的URL: http://localhost:8000/api/users/profile/123/summary?view=grid&leng=en
2)现在，直接从主模块:
我们将在起始文件(即app.js或index.js)中定义我们的路由
index.js
const app = (require('express'))();
app.get('/api/users/profile/:id/:details', (req, res) => {
console.log(req.protocol); // http or https
console.log(req.hostname); // only hostname (abc.com, localhost, etc)
console.log(req.headers.host); // hostname with port number (if any)
console.log(req.header('host')); // <same as above>
console.log(req.route.path); // exact defined route
console.log(req.baseUrl); // base path or group prefix
console.log(req.path); // relative path except path
console.log(req.url); // relative path with query|search params
console.log(req.originalUrl); // baseURL + url
// Full URL
console.log(`${req.protocol}://${req.header('host')}${req.originalUrl}`);
res.sendStatus(200);
});
const server = require('http').createServer(app);
server.listen(8000, () => console.log('server listening'));
输出
http ........................................................................ [protocol] localhost ............................................................... [hostname] localhost:8000 ...................................................... [headers.host] localhost:8000 ...................................................... [header('host')] /profile/:id/:details ......................................... [route.path] .............................................................................. [baseUrl] /profile/123/summary ........................................... [path] /profile/123/summary?view=grid&leng=en ......... [url] /profile/123/summary?view=grid&leng=en ......... [originalUrl]
完整的URL: http://localhost:8000/api/users/profile/123/summary?view=grid&leng=en
在上面的输出中，我们可以清楚地看到，唯一的区别是baseUrl在这里是空字符串。因此，originalUrl也会改变&看起来与url相同
