如果用户未登录，则将他们重定向到登录页面

Question

When user is not logged in and he enter right url for login page then he goes on login page otherwise when user enter other url he will be redirected to error page instead of redirecting to login page. how to fix this?

Answer 1

You must use @Secure annotation in your controller. This will redirect user to login page if not authorized. This Code :

@Secured(AuthenticatedVoter.IS_AUTHENTICATED_FULLY)
class CustomerController{
    ....
}

will redirect everyone how try to access customer view page unless they are logged in. they will be redirected to login page after trying to access this page. Although it is just a simple authentication and usually you need to do more than that, but it will do what you want.

Answer 2

For your first question, the above answer is fine, but if you want to restrict more specfically, you can use this too

First you should install Grails Spring Security plugin

class UserController {

  // allow to access everyone
  def index() {
  }

  @Secured([UserRole.ROLE_USER,UserRole.ROLE_ADMIN,...])
  def account() {
  }
}

Note , if you are giving @Secured at the top of the class, will restrict the whole class from access

For your second question, you use UrlMapping , for example

"404"(controller:"yourController", action:"yourErrorPageAction")