Discover the HTTP Port at Runtime
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:
-
Java
-
Kotlin
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
import org.springframework.boot.test.web.server.LocalServerPort;
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
class MyWebIntegrationTests {
@LocalServerPort
int port;
// ...
}
import org.springframework.boot.test.context.SpringBootTest
import org.springframework.boot.test.context.SpringBootTest.WebEnvironment
import org.springframework.boot.test.web.server.LocalServerPort
@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT)
class MyWebIntegrationTests {
@LocalServerPort
var port = 0
// ...
}
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