我有一个简单的应用程序，可以在其中注册用户并对其进行身份验证。我已经使用编码了密码，并且能够成功对其进行身份验证。我在我的应用程序中使用Spring
3，Spring Security 3和Hibernate 3。

现在，我想用用户ID对他们的密码加盐，但是我无法实现此功能。有人可以帮我实现吗？我已经尝试了一段时间，但无法完成它。

这是我为用户添加ID并对其进行身份验证的代码。

xyz-security.xml

<http auto-config="true" use-expressions="true">
    <intercept-url pattern="/welcome.do" access="hasRole('ROLE_USER')" /> 
    <form-login login-page="/login.do" authentication-failure-url="/login.do?login_error=1"/>       
    <logout invalidate-session="true" logout-url="/logout" logout-success-url="/"/>
</http>

<beans:bean id="daoAuthenticationProvider"  class="org.springframework.security.authentication.dao.DaoAuthenticationProvider">
    <beans:property name="userDetailsService" ref="userDetailsService"/>
</beans:bean>

<beans:bean id="authenticationManager" class="org.springframework.security.authentication.ProviderManager">
    <beans:property name="providers">
        <beans:list>
            <beans:ref local="daoAuthenticationProvider" />
        </beans:list>
    </beans:property>
</beans:bean>

<authentication-manager>
    <authentication-provider user-service-ref="userDetailsService">
        <password-encoder ref="passwordEncoder">                
            <salt-source ref="saltSource"/>
            </password-encoder>
    </authentication-provider>
</authentication-manager>

<!-- For hashing and salting user passwords -->
<beans:bean id="passwordEncoder" class="org.springframework.security.authentication.encoding.ShaPasswordEncoder"/>
<beans:bean id="saltSource" class="org.springframework.security.authentication.dao.ReflectionSaltSource"
    p:userPropertyToUse="id"/>

UserDetailsAdapter.java

@Service("userDetailsAdapter")
public class UserDetailsAdapter {

    private Long id;

    org.springframework.security.core.userdetails.User buildUserFromUserEntity(User userEntity) {
        String username = userEntity.getUsername();
        String password = userEntity.getPassword();
        boolean enabled = userEntity.isEnabled();
        boolean accountNonExpired = true;
        boolean credentialsNonExpired = true;
        boolean accountNonLocked = true;

        Collection<GrantedAuthority> authorities = new ArrayList<GrantedAuthority>();
        for (String authority: userEntity.getAuthorities()) {

            authorities.add(new GrantedAuthorityImpl(authority));
        }

        this.id = userEntity.getId();

        org.springframework.security.core.userdetails.User user = new org.springframework.security.core.userdetails.User(username, password, enabled, accountNonExpired, credentialsNonExpired, accountNonLocked, authorities);
        return user;
    }

    public Long getId() {
        return id;
    }

}

UserDetailsS​​erviceImpl

@Service("userDetailsService")
public class UserDetailsServiceImpl implements UserDetailsService {

    @Autowired
    private UserDao userDao;

    @Autowired
    private UserDetailsAdapter userDetailsAdapter;

    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
        UserDetails userDetails = null;
        User userEntity = userDao.findByUsername(username);

        if (userEntity == null) {
          throw new UsernameNotFoundException("user not found");
        }
        userDetails = userDetailsAdapter.buildUserFromUserEntity(userEntity);

        return userDetails;
    }
}

UserServiceImpl

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserDao userDao;

    @Autowired
    private PasswordEncoder passwordEncoder;

    @Autowired
    private SaltSource saltSource;

    public User getByUsername(String username) {
        return userDao.findByUsername(username);
    }

    public User getByEmail(String email) {
        return userDao.findByEmail(email);
    }

    public void createUser(User user) {
        userDao.create(user);

        UserDetailsAdapter userDetailsAdapter = new UserDetailsAdapter();
        org.springframework.security.core.userdetails.User userDetails =  userDetailsAdapter.buildUserFromUserEntity(user);
        String password = userDetails.getPassword();
        Object salt = saltSource.getSalt(userDetails);
        user.setPassword(passwordEncoder.encodePassword(password, salt));
        userDao.update(user);

    }

    public void updateUser(User user) {
        userDao.update(user);
    }
}

有人可以帮助我了解我在这里想念的东西吗？非常感谢。