Spring Boot Starter Actuator Instructions (Spring Boot Starter ActuTuator Configuration Guide)

Spring Boot Starter Actuator configuration guide Spring Boot Starter Actuator is a powerful functional module provided by Spring Boot that can be used to monitor and manage applications.This article will guide you how to configure the Spring Boot Starter Actuator and provide related programming code and configuration examples. Add dependence First of all, you need to add Spring Boot Starter Actuator to the project construction file.You can use the following ways to add dependencies in Maven: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-actuator</artifactId> </dependency> Configuration file Next, you need to configure the Actuator in the configuration file of the application.You can configure it with Application.properties or Application.yml files. Here are some common Actuator configuration items: `management.ndpoints.web.exposure.include`: which actual endpoint should be exposed to external access.By default, only the two endpoints of `Health` and` Info` are open.You can use the community to specify multiple endpoints. `management.server.Port`: an Actuator's HTTP management port.By default, the port of Actuator is the same as the port of the application itself. `management.security.enabled`: Whether the security verification of Actuator is enabled.By default, the security verification of Actuator is enabled. Example configuration: Add the following configuration to the Application.properties file: properties # All Actuator endpoints management.endpoints.web.exposure.include=* # Actuator port settings to 8081 management.server.port=8081 # Disable the security verification of Actuator management.security.enabled=false Programming code Spring Boot Starter Actuator provides many useful endpoints that can access information about applications through HTTP requests. For example, the following are some commonly used Actual's endpoints: `/actuator/health`: Show the health status of the application. `/actuator/info`: Show information about applications. `/actuator/metrics`: Show the measurement information of the application, such as memory usage, thread pool conditions, etc. `/actuator/mapings`: Show the URL mapping of the application. You can add these endpoints to the application request mapping so that you can access them through HTTP requests.For example, add the following code to a Spring MVC controller class: @RestController @RequestMapping("/actuator") public class ActuatorController { @Autowired private HealthEndpoint healthEndpoint; @Autowired private InfoEndpoint infoEndpoint; @Autowired private MetricsEndpoint metricsEndpoint; @Autowired private MappingsEndpoint mappingsEndpoint; @GetMapping("/health") public Health health() { return healthEndpoint.health(); } @GetMapping("/info") public Map<String, Object> info() { return infoEndpoint.info(); } @GetMapping("/metrics") public Map<String, Object> metrics() { return metricsEndpoint.metrics(); } @GetMapping("/mappings") public Map<String, Object> mappings() { return mappingsEndpoint.mappings(); } } The above code uses the endpoint object provided by the Spring Boot Actuator, obtains the corresponding objects by dependent injection, and provides the corresponding mapping path and processing method in the controller. Through the above configuration and code, you can use HTTP to request access to these Actuator endpoints to obtain information and measurement data related to the application. Summarize Through this article, you have learned how to configure the Spring Boot Starter Actuator and understand some commonly used Actual configuration items and programming code.Spring Boot Starter Actuator can not only provide the health status and information of the application, but also monitor the measurement information of the application, which is very useful for the monitoring and management of the application.