Exposing application information

In Spring Boot, Actuator also provides arbitrary application information by using the /info endpoint. If you make a GET request call to the /info endpoint, by default it will return empty JSON, {}.

The empty JSON means Spring Boot doesn't provide default information for your application. The /info endpoint provides any information for your Spring application that you want to expose to your client or the public. You can add any information about your application to this endpoint in application.properties or application.yml as follows:

application.properties

info.app.name=Spring Boot Actuator Application
info.app.description=This is my first Working Spring Actuator Examples
info.app.version=0.0.1-SNAPSHOT

info.helpline.email=admin@dineshonjava.com
info.helpline.phone=0120-000001100 
application.yml
info:
   app:
         name: Spring Boot Actuator Application
         description: This is my first Working Spring Actuator Examples
         version: 0.0.1-SNAPSHOT
   helpline:
         email: admin@dineshonjava.com
         phone: 0120-000001100 

In the preceding examples, you can see that we want to provide some information about our application such as application name, description, version, email, and helpline number in the /info endpoint response. Now let's request the /info endpoint; you'll get the following response:

{
  helpline:
 {
   email: "admin@dineshonjava.com",
   phone: "0120-00000110"
 },
 app:
 {
   description: "This is my first Working Spring Actuator Examples",
   version: "0.0.1-SNAPSHOT",
    name: "Spring Boot Actuator Application"
  }
} 

As shown, the Spring Boot Actuator /info endpoint exposes information about your application to the outside of your application. This information might be useful for callers.

Let's see in the next section how to kill your application using an Actuator's endpoint.