Spring Boot Controller 无法访问 type=Not Found, status=404

Spring Boot 项目启动日志

2017-09-26 14:23:08.443  INFO 3543 --- [           main] s.w.s.m.m.a.RequestMappingHandlerAdapter : Looking for @ControllerAdvice: org.springframework.boot.context.embedded.AnnotationConfigEmbeddedWebApplicationContext@41fbdac4: startup date [Tue Sep 26 14:23:04 CST 2017]; root of context hierarchy
2017-09-26 14:23:08.529  INFO 3543 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/testboot/getuser]}" onto public com.aven.User com.aven.TestBootController.getUser()
2017-09-26 14:23:08.533  INFO 3543 --- [           main] s.w.s.m.m.a.RequestMappingHandlerMapping : Mapped "{[/error]}" onto public org.springframework.http.ResponseEntity