"Did not find handler method for" log messages with Spring Boot Actuator

spring-boot spring-boot-actuator
Zoltan Altfatter picture Zoltan Altfatter · Aug 14, 2015 · Viewed 9.2k times · Source

When I include the actuator and enable debug logging messages then there are lots of Did not find handler method for log messages.

2015-08-14 18:34:25.335 DEBUG 94889 --- [nio-8080-exec-5] o.s.b.a.e.mvc.EndpointHandlerMapping     : Looking up handler method for path /index.html
2015-08-14 18:34:25.336 DEBUG 94889 --- [nio-8080-exec-5] o.s.b.a.e.mvc.EndpointHandlerMapping     : Did not find handler method for [/index.html]

When I remove the actuator then these log messages disappear.

I have tried with versions Spring Boot 1.2.5 and 1.3.0.M3 and it works the same. It is easy to try out by generating a project with spring initializr using web and actuator dependencies.

Do you know what could be the reason?

Thank you.

Answer

Andy Wilkinson picture Andy Wilkinson · Aug 15, 2015

The Actuator adds EndpointHandlerMapping to route requests to the various endpoints that it provides. When a request is received, Spring MVC asks each handler mapping in turn for the handler for the request, stopping as soon as one is provided. The log messages are produced when a request for /index.html is made. There's no endpoint mapped to that path so EndpointHandlerMapping returns null and Spring MVC moves on to the next mapping.

Related questions

Unable to access Spring Boot Actuator "/actuator" endpoint

I am able to access endpoints like http://localhost:8081/health, /status, /env, /metrics, /shutdown but not /actuator or /loginfo endpoints. Getting below exception. {"timestamp":1455929182552,"status":404,"error":"Not Found","message":"No message available","path":"/actuator"} How to acccess http://localhost:8081/actuator …

Read More
How to add a custom health check in spring boot health?

<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> This will add several useful endpoints to your application. One of them is /health. When you start your …

Read More
How to enable all endpoints in actuator (Spring Boot 2.0.0 RC1)

I moved to Spring Boot 2.0.0 RC1 from 1.5.10 and I am stuck with actuator in the latest version. How can I enable expose and enable all actuator endpoints? The only endpoints that get exposed are: { "_links": { "self": { "href": "http://127.0.0.1:8080/actuator", "templated": …

Read More