springboot 注册服务注册中心(zk)的两种方式详解

@SpringBootApplication
public class WebApplication {
 private static final Logger logger = LoggerFactory.getLogger(WebApplication.class);
 private static volatile boolean IS_REGISTRY = false;
 public static void main(String[] args) {
 ApplicationContext context = run(WebApplication.class, args);
 if (IS_REGISTRY) {
  logger.info("注册2: WebApplication启动完成后");
  ZkClient zkClient = context.getBean(ZkClient.class);
  zkClient.register();
  IS_REGISTRY = true;
  logger.info("注册2: 注册成功");
 }
 }
}

@WebListener
public class RegisterListener implements ServletContextListener {
 protected final Logger logger = LoggerFactory.getLogger(this.getClass());
 private static volatile boolean IS_REGISTRY = false;
 @Autowired
 private ZkClient zkClient;
 @Override
 public void contextInitialized(ServletContextEvent servletContextEvent) {
 try {
  if (!IS_REGISTRY) {
  logger.info("注册1: Servelet容器启动成功后");
  zkClient.register();
  logger.info("注册1: 注册成功");
  }
  IS_REGISTRY = true;
 } catch (Exception e) {
  IS_REGISTRY = false;
  logger.info("注册1: 注册失败");
 }
 }
 @Override
 public void contextDestroyed(ServletContextEvent servletContextEvent) {
 if (IS_REGISTRY) {
  zkClient.stop();
 }
 }
}

@ServletComponentScan
@SpringBootApplication
public class WebApplication {
}