如何在inMemoryAuthentication生成器生成后向其添加用户？

Question

public class WebSecurityConfig extends WebSecurityConfigurerAdapter

...

auth.inMemoryAuthentication().withUser(email).password(password).roles(roles.toArray(new String[roles.size()])).and().passwordEncoder(encoder());

这在某个时间点上很有效，但我有一个用例，在应用程序运行时可以添加用户。

我可以通过哪种方法（通过控制器/服务）进行启动后操作？我想它可能是InmemoryUserDetailsManager（它包含createUser()方法），但我不确定如何引用或配置它。

Answer 1

下面的代码将执行您所要求的操作：

@Configuration
@EnableWebMvcSecurity
public class WebSecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        //whatever here
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.userDetailsService(inMemoryUserDetailsManager());
    }

    @Bean
    public InMemoryUserDetailsManager inMemoryUserDetailsManager() {
        final Properties users = new Properties();
        users.put("user","pass,ROLE_USER,enabled"); //add whatever other user you need
        return new InMemoryUserDetailsManager(users);
    }

}

使用您在上面配置的InmemoryUserDetailsManager，一个只添加并检查用户是否存在的超级简单控制器如下所示：

@RestController
@RequestMapping("user")
public class SimpleSecurityController {

    private final InMemoryUserDetailsManager inMemoryUserDetailsManager;

    @Autowired
    public SimpleSecurityController(InMemoryUserDetailsManager inMemoryUserDetailsManager) {
       this.inMemoryUserDetailsManager = inMemoryUserDetailsManager;
    }

    @RequestMapping("exists/{username}")
    public boolean userExists(@PathVariable("username") String username ) {
        return inMemoryUserDetailsManager.userExists(username);
    }

    @RequestMapping("add/{username}/{password}")
    public String add(@PathVariable("username") String username, @PathVariable("password") String password) {
        inMemoryUserDetailsManager.createUser(new User(username, password, new ArrayList<GrantedAuthority>()));
        return "added";
    }
}

还要注意，如果使用Spring Boot的自动配置，则需要添加

@EnableAutoConfiguration(exclude = SecurityAutoConfiguration.class)