需求：应用程序启动后，初始化基础数据、加密证书等操作。

可以使用CommandLineRunner接口来实现，在SpringBoot.run()之后完成资源的初始化工作。

注意：多个Runner需要顺序启动的话，可以使用@Order注解

package sun.flower.diver.modules.system.init;import org.springframework.boot.CommandLineRunner;import org.springframework.core.annotation.Order;import org.springframework.stereotype.Component;/** * 应用程序启动后加载基础数据 Runner * * @Author YangXuyue * @Date 2018/10/28 13:48 */@Component@Order(1) public class BaseDataRunner implements CommandLineRunner { @Override public void run(String... strings) throws Exception { System.out.println("start init base data"); } }

package sun.flower.diver.modules.system.init;import org.springframework.boot.CommandLineRunner;import org.springframework.core.annotation.Order;import org.springframework.stereotype.Component;/** * 应用程序启动后加载证书 Runner * * @Author YangXuyue * @Date 2018/10/28 13:50 */@Component@Order(2) public class CertificateRunner implements CommandLineRunner { @Override public void run(String... strings) throws Exception { System.out.println("start init certificate info"); } }

package sun.flower.diver;import org.springframework.boot.Banner;import org.springframework.boot.SpringApplication;import org.springframework.boot.autoconfigure.SpringBootApplication;import org.springframework.cloud.client.discovery.EnableDiscoveryClient;@SpringBootApplication// 添加注解 @EnableDiscoveryClient，只有这样，服务注册、心跳检测相关配置信息才能被自动加载@EnableDiscoveryClient public class DiverApplication { public static void main(String[] args) { System.out.println("application start"); SpringApplication application = new SpringApplication(DiverApplication.class); // 添加监听器，此时监听器类不需要标注是一个Bean //application.addListeners(new BaseListener());  application.setBannerMode(Banner.Mode.OFF); application.run(args); System.out.println("application started"); } }