public static void main(String[] args) {
    System.exit(SpringApplication.exit(
            new SpringApplicationBuilder(ExitCodeEventOnExitBootstrap.class)
                    .listeners((ApplicationListener<ExitCodeEvent>) event ->
                            System.out.println("监听到退出码：" + event.getExitCode())
                    )
                    .web(false) // 非 Web 应用
                    .run(args)  // 运行 SpringBoot 应用
    ));
}
 

/**
 * Utilizes {@link ApplicationEvent}s to determine the end and failure of a task.
 * Specifically:
 * <ul>
 * <li>{@link ApplicationReadyEvent} - Successful end of a task</li>
 * <li>{@link ApplicationFailedEvent} - Failure of a task</li>
 * </ul>
 * @param applicationEvent The application being listened for.
 */
@Override
public void onApplicationEvent(ApplicationEvent applicationEvent) {
	if (applicationEvent instanceof ApplicationFailedEvent) {
		this.applicationFailedException = ((ApplicationFailedEvent) applicationEvent)
				.getException();
		doTaskEnd();
	}
	else if (applicationEvent instanceof ExitCodeEvent) {
		this.exitCodeEvent = (ExitCodeEvent) applicationEvent;
	}
	else if (applicationEvent instanceof ApplicationReadyEvent) {
		doTaskEnd();
	}
}
 

@Test
public void testTaskFailedWithExitCodeEvent() {
	final int exitCode = 10;
	this.context.register(TestListener.class);
	this.context.register(TestListener2.class);

	this.context.refresh();
	RuntimeException exception = new RuntimeException("This was expected");
	SpringApplication application = new SpringApplication();
	this.taskExplorer = this.context.getBean(TaskExplorer.class);
	this.context.publishEvent(new ExitCodeEvent(this.context, exitCode));
	this.context.publishEvent(new ApplicationFailedEvent(application, new String[0],
			this.context, exception));
	this.context.publishEvent(
			new ApplicationReadyEvent(application, new String[0], this.context));

	verifyTaskExecution(0, true, exitCode, exception, null);
	assertThat(TestListener.getStartupOrderList().size()).isEqualTo(2);
	assertThat(TestListener.getStartupOrderList().get(0))
			.isEqualTo(Integer.valueOf(2));
	assertThat(TestListener.getStartupOrderList().get(1))
			.isEqualTo(Integer.valueOf(1));

	assertThat(TestListener.getEndOrderList().size()).isEqualTo(2);
	assertThat(TestListener.getEndOrderList().get(0)).isEqualTo(Integer.valueOf(1));
	assertThat(TestListener.getEndOrderList().get(1)).isEqualTo(Integer.valueOf(2));

	assertThat(TestListener.getFailOrderList().size()).isEqualTo(2);
	assertThat(TestListener.getFailOrderList().get(0)).isEqualTo(Integer.valueOf(1));
	assertThat(TestListener.getFailOrderList().get(1)).isEqualTo(Integer.valueOf(2));

}
 

@EventListener
public void exitEvent(ExitCodeEvent event) {
    System.out.println("Exit code: " + event.getExitCode());
}