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This article focuses on "what are the problems in the use of the actuator Spring Boot Actuator", interested friends may wish to take a look. The method introduced in this paper is simple, fast and practical. Next let the editor to take you to learn "what are the problems in the use of the actuator Spring Boot Actuator"?

Actuator

Spring Boot contains Spring Boot Actuator. This section answers the questions that often occur in use.

Change the address of the HTTP port or actuator endpoint

In a separate application, the HTTP port of the actuator is the same as the primary HTTP port by default. If you want the application to listen on different ports, you can set the external property management.port. To listen for a completely different network address (for example, you have an internal network for management and an external network for user applications), you can set management.address to an available IP address, and then bind the server to that address.

Customize the WhiteLabel error page

Spring Boot installs a 'whitelabel' error page, which you can see in the client browser if you encounter a server error (the machine client consumes JSON, while other media types see a reasonable response with the correct error code). You can set error.whitelabel.enabled=false to turn it off, but usually you want to add your own error page to replace whitelabel. Exactly how you implement it depends on the template technology you use. For example, if you are using Thymeleaf, you will add an error.html template. If you are using FreeMarker, you will add an error.ftl template. Usually, all you need is a View named error, or an @ Controller that handles the / error path. Unless you replace some of the default configurations, you will find a BeanNameViewResolver in your ApplicationContext, so a @ Bean with an id of error may be an easy way to do this, see ErrorMvcAutoConfiguration for details.

Actuator and Jersey

Actuator HTTP endpoints are only available in Spring MVC-based applications. If you want to use Jersey and actuators, you need to enable Spring MVC (add spring-boot-starter-web dependencies). By default, Jersey and Spring MVC dispatcher servlet are mapped to the same path (/). You need to change one of their paths (Spring MVC can be configured with server.servlet-path,Jersey and spring.jersey.application-path can be configured). For example, if you add server.servlet-path=/system to application.properties, you will access the actuator HTTP endpoint at / system.

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