6. 结论:preHandle全为true才会执行到requestMapping和postHandle 7. 案例(用户未登录拦截到login.jsp) *publicclassMyFirstInterceptorimplementsHandlerInterceptor{ //当返回值为false时不能够进入RequestMapping对应的方法 @Override publicbooleanpreHandle(HttpServletRequest request, HttpServletRes...