即将跳转到外部网站,安全性未知,是否继续?
https://github.com/spring-projects/spring-framework/blob/259b2ca5f4de3fd97ae8a06ab6c5b4b49fb69c99/spring-webmvc/src/main/java/org/springframework/web/servlet/handler/AbstractHandlerMapping.java#L416-L421