public class WiseApplication implements WebServerFactoryCustomizer<ConfigurableServletWebServerFactory> {

	@Value("${port}")
	private String port;

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

	@Override
	public void customize(ConfigurableServletWebServerFactory factory) {
		factory.setPort(Integer.parseInt(port));
	}
}
 

java -jar xxx.jar --port=8888

localhost:8888/