int port = ((TomcatEmbeddedServletContainer)((AnnotationConfigEmbeddedWebApplicationContext)context).getEmbeddedServletContainer()).getPort();
发现以下内容有想要的东西：
String id = ((AnnotationConfigEmbeddedWebApplicationContext) configContext).getId();
我的代码（覆写MongoLockProvider为MyMongoLockProvider是因为小公司一台服务器两个实例..）：
关于定时任务锁
@Autowired
ConfigurableApplicationContext configContext;
//定时任务锁配置
@Bean
public LockProvider lockProvider(@Autowired MongoClient mongo) {
String serverId = configContext.getId();
return new MyMongoLockProvider(mongo, database,serverId);
}
@Bean
public ScheduledLockConfiguration taskScheduler(LockProvider lockProvider) {
return ScheduledLockConfigurationBuilder
.withLockProvider(lockProvider)
.withPoolSize(10)
.withDefaultLockAtMostFor(Duration.ofMinutes(10))
.build();
}