How to Get All Endpoints List After Startup, Spring Boot
JavaRestSpring BootAuthorizationJava Problem Overview
I have a rest service written with spring boot. I want to get all endpoints after start up. How can i achieve that? Purpose of this, i want to save all endpoints to a db after start up (if they are not already exist) and use these for authorization. These entries will be inject into roles and roles will be used to create tokens.
Java Solutions
Solution 1 - Java
You can get RequestMappingHandlerMapping at the start of the application context.
@Component
public class EndpointsListener implements ApplicationListener<ContextRefreshedEvent> {
@Override
public void onApplicationEvent(ContextRefreshedEvent event) {
ApplicationContext applicationContext = event.getApplicationContext();
applicationContext.getBean(RequestMappingHandlerMapping.class).getHandlerMethods()
.forEach(/*Write your code here */);
}
}
Alternately you can also Spring boot actuator(You can also use actutator even though you are not using Spring boot) which expose another endpoint(mappings endpoint) which lists all endpoints in json. You can hit this endpoint and parse the json to get the list of endpoints.
Solution 2 - Java
You need 3 steps to exposure all endpoints:
- enable Spring Boot Actuator
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
- enable endpoints
In Spring Boot 2, Actuator comes with most endpoints disabled, the only 2 available by default are :
/health
/info
If you want to enable all of the endpoints, just set:
management.endpoints.web.exposure.include=*
For more details, refer to:
https://docs.spring.io/spring-boot/docs/current/reference/html/production-ready-endpoints.html
- go!
btw, In Spring Boot 2, Actuator simplifies its security model by merging it with the application one.
For more details, refer to this article:
Solution 3 - Java
As an addition to the above comments, since Spring 4.2 you may use the @EventListener
annotation like this:
@Component
public class EndpointsListener {
private static final Logger LOGGER = LoggerFactory.getLogger(EndpointsListener.class);
@EventListener
public void handleContextRefresh(ContextRefreshedEvent event) {
ApplicationContext applicationContext = event.getApplicationContext();
applicationContext.getBean(RequestMappingHandlerMapping.class)
.getHandlerMethods().forEach((key, value) -> LOGGER.info("{} {}", key, value));
}
}
If you want to find out more about how to use the Spring Events and to create custom events, please check out this article: Spring Events
Solution 4 - Java
In the application.properties, we need management.endpoints.web.exposure.include=mappings
Then we can see all the endpoints at: http://localhost:8080/actuator/mappings
Don't forget to add the actuator to the POM.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
Solution 5 - Java
Late to the party but you can directly use
@Autowired
private RequestMappingHandlerMapping requestHandlerMapping;
this.requestHandlerMapping.getHandlerMethods()
.forEach((key, value) -> /* whatever */));