如何对作为微服务开发的Springboot应用程序进行方法级授权？

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
</dependency>

@Configuration
@EnableWebSecurity
public class SecurityConfig extends WebSecurityConfigurerAdapter {

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http.authorizeRequests()
            .antMatchers("/admin/**").hasRole("ADMIN")
            .antMatchers("/user/**").hasAnyRole("ADMIN", "USER")
            .anyRequest().authenticated()
            .and()
            .formLogin()
            .and()
            .httpBasic();
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
            .withUser("admin").password("{noop}admin").roles("ADMIN")
            .and()
            .withUser("user").password("{noop}user").roles("USER");
    }
}

@RestController
public class MyController {

    @PreAuthorize("hasRole('ADMIN')")
    @GetMapping("/admin/hello")
    public String adminHello() {
        return "Hello Admin!";
    }

    @PreAuthorize("hasAnyRole('ADMIN', 'USER')")
    @GetMapping("/user/hello")
    public String userHello() {
        return "Hello User!";
    }
}