如何在Spring Boot中创建自定义@PreAuthorize MethodSecurity？

@Configuration
@EnableGlobalMethodSecurity(prePostEnabled = true)
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().permitAll()
                .and()
                .logout().permitAll();
    }

    @Autowired
    public void configureGlobal(AuthenticationManagerBuilder auth) throws Exception {
        auth.inMemoryAuthentication()
                .withUser("admin").password("{noop}admin").roles("ADMIN")
                .and()
                .withUser("user").password("{noop}user").roles("USER");
    }

    @PreAuthorize("hasRole('ADMIN')")
    public void adminOnlyMethod() {
        // 只有ADMIN角色可以访问的方法
    }

    @PreAuthorize("hasAnyRole('ADMIN', 'USER')")
    public void userMethod() {
        // ADMIN和USER角色都可以访问的方法
    }
}