Spring Security动态授权

Question

im使用spring security和spring boot开发应用程序，使用SecurityConf保护我的api im的特定endpoint，如下所示：

 @Override
public void configure(final AuthenticationManagerBuilder auth) throws Exception {
    auth
    .inMemoryAuthentication()
    .passwordEncoder(passwordEncoder)
    .withUser(username).password(password).roles(ADMIN_ROLE);
}

@Override
protected void configure(final HttpSecurity http) throws Exception {
    http
    .csrf().disable()
    .authorizeRequests()
    .antMatchers("/api/survey/report/**").hasRole(ADMIN_ROLE)
    .and().formLogin()
    .and().logout();
}

密码和用户名从数据库开始加载。

一切似乎都工作正常，但现在我必须实现一个方法来更改管理员的密码，我实现了存储库、服务和控制器方法来使用新的加密密码更改DB，但就目前而言，除非我重新启动它，否则更改不会反映在应用程序中（这会导致类加载新的用户名和密码）。

如何让应用程序从数据库重新加载新的用户名和密码，而不必重新启动它？（在生产环境中，这是一个不会停止运行的应用程序）

这是密码更改方法的控制器：

@RequestMapping(value = "/change", method = RequestMethod.POST)
public ResponseEntity changePassword(@RequestBody Password password) {

    return passwordService.updatePassword(password);
}

这就是服务方法：

public ResponseEntity updatePassword(Password password) {
    Administrator administrator = administratorRepository.findAdministrator();
    if (passwordEncoder.matches(password.getOldPassword(), administrator.getPassword())) {
        String encodePassword = passwordEncoder.encode(password.getNewPassword());
        administrator.setPassword(encodePassword);
        administratorRepository.updateAdministrator(administrator);

        return new ResponseEntity(HttpStatus.OK);
    }
    return new ResponseEntity(HttpStatus.BAD_REQUEST);
}

我使用如下自动连线方法在SecurityConfig类的atributes上加载用户名和密码：

@Autowired
private void initUser() {
    Administrator administrator = administratorRepository.findAdministrator();
    this.password = administrator.getPassword();
    this.username = administrator.getUsername();

}

我的班级定义如下：

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

private static final String ADMIN_ROLE = "ADMIN";

private String username;
private String password;

@Autowired
private PasswordEncoder passwordEncoder;

@Autowired
private AdministratorRepository administratorRepository;

passwordencoder是一个类，我用它来对管理过程进行加密和散列，repo是我保存数据的地方

Answer 1

使用CustomUserDetailService而不是像这样使用AuthenticationProvider

@Component("userDetailsService")
public class CustomUserDetailsService implements org.springframework.security.core.userdetails.UserDetailsService {


    private static String username;
    private static String password;
    private final Logger log = LoggerFactory.getLogger(CustomUserDetailsService.class);

    public UserDetails loadUserByUsername(String username) throws UsernameNotFoundException {



        return new User(CustomUserDetailsService.username,CustomUserDetailsService.password,null);
    }

}


@Configuration
@EnableWebSecurity
@EnableGlobalMethodSecurity(prePostEnabled = true, securedEnabled = true)
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {


    @Inject
    @Qualifier("userDetailsService")
    private UserDetailsService userDetailsService;

    @Inject
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth
            .userDetailsService(userDetailsService);
    }

    @Override
    public void configure(WebSecurity web) throws Exception {

    }

}

然后在里面改密码

public ResponseEntity updatePassword(Password password) {
    Administrator administrator = administratorRepository.findAdministrator();
    if (passwordEncoder.matches(password.getOldPassword(), administrator.getPassword())) {
        String encodePassword = passwordEncoder.encode(password.getNewPassword());
        administrator.setPassword(encodePassword);
        administratorRepository.updateAdministrator(administrator);
        CustomUserDetailsService.password=encodePassword;
        return new ResponseEntity(HttpStatus.OK);
    }
    return new ResponseEntity(HttpStatus.BAD_REQUEST);
}