com.lmax.disruptor.EventHandler<T> Callback interface to be implemented for processing events as they become available in the RingBuffer 用于提供对RingBuffer中当事件可用时的接口 Type Parameters: <T> event implementation storing the data for sharing during exchange or parallel coordination of an event. 事件数据 See Also: if you want to handle exceptions propagated out of the handler. 如果需要将handler中出现的异常传播出去，可通过如下设置：--->> void com.lmax.disruptor.BatchEventProcessor.setExceptionHandler(ExceptionHandler<? super T> exceptionHandler) Set a new ExceptionHandler for handling exceptions propagated out of the BatchEventProcessor Parameters: exceptionHandler to replace the existing exceptionHandler. 设置的exceptionHandler,接口定义如下:--->> com.lmax.disruptor.ExceptionHandler<T> Callback handler for uncaught exceptions in the event processing cycle of the BatchEventProcessor 在BatchEventProcessor的事件处理循环中定义对未捕获异常的处理接口