如何覆盖spring-boot的配置？

Question

I'm using spring-boot-starter-web with spring-boot-starter-jetty and I would like to be able to change Jetty's config by injecting my own xml bean. I cannot figure out how to override the configuration in spring-boot-starter-jetty.

Here's a part of my pom.xml

<dependencies>
        <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-web</artifactId>
        <exclusions>
            <exclusion>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-starter-tomcat</artifactId>
            </exclusion>
        </exclusions>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-jetty</artifactId>
        </dependency>
</dependencies>

Here's how the application starts

@SpringBootApplication
public class Application {

        public static void main(String[] args) {
            SpringApplication.run(Application.class, args);
        }
}

I create a bean in a file named jetty.xml to override the port for Jetty

<bean id="connector" class="org.eclipse.jetty.server.ServerConnector">
        <constructor-arg ref="server"/>
        <property name="port" value="8789"/>
</bean>

Then I thought by importing this resource, it would override the port in spring-boot

@Configuration  
@ImportResource( { "classpath*:jetty.xml" } )  
public class ConfigJetty { } 

but the port stays at 8080

How can we achieve this?

Thank you

Answer 1

'In a standalone application the main HTTP port defaults to 8080, but can be set with server.port (eg in application.properties or as a System property). '