Grails, spring-security-core plugin：使用email登录

1. Implement the first requirement – Add an email address property to the user domain  

This is really simple, just add the property to the domain class  

Groovy代码  

1. package org.customauth  
2.    
3. class CustomUser {  
4.    
5.     String username  
6.     String password  
7.     String email  
8.     boolean enabled  
9.     boolean accountExpired  
10.    
11.     // *******  
12.     // the rest of the generated class contents  
13.     // *******  
14. }  

2. Implement the second requirement – Authenticate using the username or the email  

In order to implement this requirement, I will have to implement a new UserDetailsService 

Groovy代码  

1. package org.customauth  
2.    
3. import org.codehaus.groovy.grails.plugins.springsecurity.GrailsUser  
4. import org.codehaus.groovy.grails.plugins.springsecurity.GrailsUserDetailsService  
5. import org.codehaus.groovy.grails.plugins.springsecurity.SpringSecurityUtils  
6. import org.springframework.security.core.authority.GrantedAuthorityImpl  
7. import org.springframework.security.core.userdetails.UserDetails  
8. import org.springframework.security.core.userdetails.UsernameNotFoundException  
9.    
10. class CustomUserDetailsService implements GrailsUserDetailsService {  
11.    
12.     static final List NO_ROLES = [new GrantedAuthorityImpl(SpringSecurityUtils.NO_ROLE)]  
13.    
14.     UserDetails loadUserByUsername(String username, boolean loadRoles)   
15.     throws UsernameNotFoundException {  
16.         return loadUserByUsername(username)  
17.     }  
18.    
19.     UserDetails loadUserByUsername(String username)   
20.     throws UsernameNotFoundException {  
21.    
22.         CustomUser.withTransaction { status ->  
23.             CustomUser user = CustomUser.findByUsernameOrEmail(username, username)  
24.             if (!user)  
25.                 throw new UsernameNotFoundException('User not found', username)  
26.    
27.             def authorities = user.authorities.collect {  
28.                 new GrantedAuthorityImpl(it.authority)}  
29.    
30.             return new GrailsUser(user.username, user.password, user.enabled,   
31.             !user.accountExpired, !user.passwordExpired, !user.accountLocked,  
32.                 authorities ?: NO_ROLES, user.id)  
33.         }  
34.     }  
35. }  

3. With the custom service in place, I need to register it in grails-app/conf/spring/resources.groovy by adding 

Groovy代码  

1. beans = {  
2.     userDetailsService(org.customauth.CustomUserDetailsService)  
3. }  

原文：http://mafiadada.iteye.com/blog/1166625