root
/
spring-boot
mirror of https://github.com/spring-projects/spring-boot.git
1
0
Fork 0
Code Issues Actions 15 Packages Projects Releases Wiki Activity

Harmonize Discover the HTTP Port at Runtime How-To 

See gh-22898
This commit is contained in:
John Franco 2020-08-11 22:39:30 -07:00 committed by Stephane Nicoll
parent cdbb7f441a
commit 303768b2b5
1 changed files with 1 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc
View File

@ -498,7 +498,7 @@ To scan for a free port (using OS natives to prevent clashes) use `server.port=0
[[howto-discover-the-http-port-at-runtime]]
=== Discover the HTTP Port at Runtime
You can access the port the server is running on from log output or from the `ServletWebServerApplicationContext` through its `WebServer`.
The best way to get that and be sure that it has been initialized is to add a `@Bean` of type `ApplicationListener<ServletWebServerInitializedEvent>` and pull the container out of the event when it is published.
The best way to get that and be sure that it has been initialized is to add a `@Bean` of type `ApplicationListener<ServletWebServerInitializedEvent>` (or `ApplicationListener<ReactiveWebServerInitializedEvent>` for reactive servers) and pull the container out of the event when it is published.
Tests that use `@SpringBootTest(webEnvironment=WebEnvironment.RANDOM_PORT)` can also inject the actual port into a field by using the `@LocalServerPort` annotation, as shown in the following example: