[symfony] symfony 2 No route found for "GET /"

Symfony2 returns No route found for "GET /" when I try to run http://localhost/app_dev.php, but this url works: http://localhost/app_dev.php/hello/Symfony. I removed AcmeDemoBundle and I'm trying to run an example bundle from a symfony2 tutorial. What is wrong ?

app/config/routing.yml :

ShopMyShopBundle:
resource: "@ShopMyShopBundle/Resources/config/routing.yml"
prefix:   /

app/config/routing_dev.yml :

_assetic:
resource: .
type:     assetic

_wdt:
resource: "@WebProfilerBundle/Resources/config/routing/wdt.xml"
prefix:   /_wdt

_profiler:
resource: "@WebProfilerBundle/Resources/config/routing/profiler.xml"
prefix:   /_profiler

_configurator:
resource: "@SensioDistributionBundle/Resources/config/routing/webconfigurator.xml"
prefix:   /_configurator

_main:
resource: routing.yml

src/Shop/MyShopBundle/Resources/config/routing.yml :

ShopMyShopBundle_homepage:
pattern:  /hello/{name}
defaults: { _controller: ShopMyShopBundle:Main:index }
requirements:
    _method:  GET

This work for me:

cache:clear --env=prod

Using symfony 2.3 with php 5.5 and using the built in server with

app/console server:run

which should output something like:

Server running on http://127.0.0.1:8000
Quit the server with CONTROL-C.

then go to http://127.0.0.1:8000/app_dev.php/app/example

this should give you the default, which you can also find the default route by viewing src/AppBundle/Controller/DefaultController.php

i could have been only one who made this mistake but maybe not so i'll post.

the format for annotations in the comments before a route has to start with a slash and two asterisks. i was making the mistake of a slash and only one asterisk, which PHPStorm autocompleted.

my route looked like this:

/*
 * @Route("/",name="homepage")
 */
public function indexAction(Request $request) {
    return $this->render('default/index.html.twig');
}

when it should have been this

/**
 * @Route("/",name="homepage")
 */
public function indexAction(Request $request) {
    return $this->render('default/base.html.twig');
}

Prefix is the prefix for url routing. If it's equals to '/' it means it will have no prefix. Then you defined a route with pattern "it should start with /hello".

To create a route for '/' you need to add these lines in your src/Shop/MyShopBundle/Resources/config/routing.yml :

ShopMyShopBundle_homepage:
    pattern:  /
    defaults: { _controller: ShopMyShopBundle:Main:index }

The above answers are wrong, respectively aren't answering why you're having troubles viewing the demo-content prod-mode.

Here's the correct answer: clear your "prod"-cache:

php app/console cache:clear --env prod

I have also tried that error , I got it right by just adding /hello/any name because it is path that there must be an hello/name

example : instead of just putting http://localhost/app_dev.php

put it like this way http://localhost/name_of_your_project/web/app_dev.php/hello/ai

it will display Hello Ai . I hope I answer your question.