javascript - How to get a url as a param in Node.js? -


code:

app.get("/:url", function(req,res) {     var url = req.params.url;     res.send(url); });

problem:

this not work.

if try: 

http://localhost:3000/https://www.google.com

i get:

cannot /https://www.google.com

you can try this, using regex:

var app = require('express')();  app.get(/^\/(.*)/, function (req, res) {      var url = req.params[0];     res.send(url);  });  app.listen(3000, () => console.log('listening on 3000'));

when run:

curl http://localhost:3000/https://www.google.com

the server should return:

https://www.google.com

update

there controversy whether or not colons legal in urls.

see question details:

according rfc 3986 legal url:

http://localhost:3000/https://tools.ietf.org/html/rfc3986

but note while legal well:

http://localhost:3000/https://tools.ietf.org/html/rfc3986#section-3.3

if entered url in browser, server get:

/https://tools.ietf.org/html/rfc3986

in request. reason while not strictly necessary still recommend url-encoding url put in other urls - see answer zac delventhal.

experiment

using above code example, command:

curl http://localhost:3000/https://www.google.com/

will output this:

https://www.google.com/

but command:

curl 'http://localhost:3000/https://www.google.com/#fragment'

will output this:

https://www.google.com/

note used single quotes above not because necessary here - they're not, see this:

echo http://localhost:3000/https://www.google.com/#fragment

but show hash fragment doesn't disappear because treated comment shell in case thought that reason. not sent when quotes used, , happens can demonstrated -v switch of curl:

* connected localhost (127.0.0.1) port 3000 (#0) > /https://www.google.com/ http/1.1 > user-agent: curl/7.35.0 > host: localhost:3000 > accept: */*

as can see hash fragment not sent http impossible server know existed.

incidentally, demonstrates using un-encoded url within other urls not mess proxy, because http requests proxy servers send this:

get https://www.google.com/ http/1.1

and not this:

get /https://www.google.com/ http/1.1

so cannot confused. (note slash.)


Comments

Post a Comment

Popular posts from this blog

'hasOwnProperty' in javascript -

i use obj.hasownproperty judge whether object has property, when replaced obj[prop] !== undefined , not normal implementation, ask, why behind method can not use it? object.hasownproperty(prop); object[prop] !== undefined; obj[prop] !== undefined wrong 2 reasons: you can explicitly set property undefined , obj[prop] = undefined; . obj.hasownproperty(prop) return true in case. obj[prop] follow prototype chain, return property that's inherited. obj.hasownproperty(prop) returns true if property exists directly in object, returns false inherited properties.
Read more

How to put a lock and transaction on table using spring 4 or above using jdbcTemplate and annotations like @Transactional? -

i trying put lock on table while writing on table , if happened in between roll-back . trying convert below code lock table test_g1 read; lock table test_g write; -- begin; start transaction; insert test_g1 values(143); insert test_g values(145); select * test_g1; select * test_g; rollback; select * test_g; unlock tables; how convert above code @transactional spring jdbctemplate code? @transactional(rollbackfor={dataaccessexception.class}) public void test(){ jdbctemplate.execute("insert test1 (id, nam) values (4, 'a')"); throw new dataaccessexception("error") { }; } here trying throw error, insert statement should rollback it's not happening . thanks edit-1 attaching code , doing in jdbcdaoimpl.java , mentioned problem comment above test() . app.java package com.cgiri.javabrains.spring4; import org.springframework.beans.factory.annotation.autowired; import org.springframework.context.applic...
Read more

How to understand 2 main() functions after using uftrace to profile the C++ program? -

i trying uftrace profile following simple c++ program: #include <iostream> class { public: a() {std::cout << "a created" << std::endl;} ~a() {std::cout << "a destroyed" << std::endl;} }; int main() { a; return 0; } the profile result this: # uftrace a.out created destroyed # duration tid function 2.026 [ 4828] | __cxa_atexit(); [ 4828] | main() { [ 4828] | __static_initialization_and_destruction_0() { 89.397 [ 4828] | std::ios_base::init::init(); 0.768 [ 4828] | __cxa_atexit(); 93.029 [ 4828] | } /* __static_initialization_and_destruction_0 */ 94.425 [ 4828] | } /* main */ [ 4828] | main() { [ 4828] | a::a() { 11.104 [ 4828] | std::operator <<(); 10.825 [ 4828] | std::basic_ostream::operator <<(); 24.514 [ 4828] | } /* a::a */ [ 4828] | a::~a() { 0.978 [ 4828] | ...
Read more