Spring Boot 生命周期

application.properties中，添加：

context.listener.classes=com.example.listener.ApplicationEventListener

实现ApplicationListener接口：

public class ApplicationEventListener implements ApplicationListener {

    @Override

    public void onApplicationEvent(ApplicationEvent event) {

        // 在这里可以监听到Spring Boot的生命周期

        if (event instanceof ApplicationEnvironmentPreparedEvent) { // 初始化环境变量 }

        else if (event instanceof ApplicationPreparedEvent) { // 初始化完成 }

        else if (event instanceof ContextRefreshedEvent) { // 应用刷新 }

        else if (event instanceof ApplicationReadyEvent) {// 应用已启动完成 }

        else if (event instanceof ContextStartedEvent) { // 应用启动，需要在代码动态添加监听器才可捕获 }

        else if (event instanceof ContextStoppedEvent) { // 应用停止 }

        else if (event instanceof ContextClosedEvent) { // 应用关闭 }

        else {}

    }

}