spring security UserDetailsService 源码
spring security UserDetailsService 代码
文件路径：/core/src/main/java/org/springframework/security/core/userdetails/UserDetailsService.java
/*
* Copyright 2004, 2005, 2006 Acegi Technology Pty Limited
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* https://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.springframework.security.core.userdetails;
/**
* Core interface which loads user-specific data.
* <p>
* It is used throughout the framework as a user DAO and is the strategy used by the
* {@link org.springframework.security.authentication.dao.DaoAuthenticationProvider
* DaoAuthenticationProvider}.
*
* <p>
* The interface requires only one read-only method, which simplifies support for new
* data-access strategies.
*
* @author Ben Alex
* @see org.springframework.security.authentication.dao.DaoAuthenticationProvider
* @see UserDetails
*/
public interface UserDetailsService {
/**
* Locates the user based on the username. In the actual implementation, the search
* may possibly be case sensitive, or case insensitive depending on how the
* implementation instance is configured. In this case, the <code>UserDetails</code>
* object that comes back may have a username that is of a different case than what
* was actually requested..
* @param username the username identifying the user whose data is required.
* @return a fully populated user record (never <code>null</code>)
* @throws UsernameNotFoundException if the user could not be found or the user has no
* GrantedAuthority
*/
UserDetails loadUserByUsername(String username) throws UsernameNotFoundException;
}
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