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Polish "Harmonize Discover the HTTP Port at Runtime How-To" 

See gh-22898
This commit is contained in:
Stephane Nicoll 2020-08-12 09:49:16 +02:00
parent 303768b2b5
commit ee2363fca7
1 changed files with 2 additions and 5 deletions
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7
spring-boot-project/spring-boot-docs/src/main/asciidoc/howto.adoc
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@ -497,8 +497,8 @@ 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>` (or `ApplicationListener<ReactiveWebServerInitializedEvent>` for reactive servers) and pull the container out of the event when it is published.
You can access the port the server is running on from log output or from the `WebServerApplicationContext` through its `WebServer`.
The best way to get that and be sure it has been initialized is to add a `@Bean` of type `ApplicationListener<WebServerInitializedEvent>` 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:
@ -507,9 +507,6 @@ Tests that use `@SpringBootTest(webEnvironment=WebEnvironment.RANDOM_PORT)` can
@SpringBootTest(webEnvironment=WebEnvironment.RANDOM_PORT)
public class MyWebIntegrationTests {
@Autowired
ServletWebServerApplicationContext server;
@LocalServerPort
int port;