maven引入：
<dependency>
<groupId>com.dangdang</groupId>
<artifactId>elastic-job-lite-lifecycle</artifactId>
<version>2.1.2</version>
</dependency>
java代码为：(为了较好的展示，代码加了回车)
JobOperateAPI jobAPIService=
JobAPIFactory.createJobOperateAPI("zookeeper地址", "任务命名空间"
, Optional.fromNullable(null));
jobAPIService.trigger(Optional.of("定时任务类的全类名")
, Optional.<String>absent());