区别： @Secured(), @PreAuthorize() 及 @RolesAllowed()
https://www.bbsmax.com/A/VGzlWlZwdb/
@Secured(), @PreAuthorize()
https://www.cnblogs.com/shihuc/p/5063583.html
spring security中@PreAuthorize注解的使用
https://www.cnblogs.com/wueryuan/p/11401479.html
Security注解：@PreAuthorize,@PostAuthorize, @Secured, EL实现方法安全
https://www.cnblogs.com/ysyy/p/10708645.html