接口的使用
org.apache.pulsar.client.api.Consumer

使用Consumer的程序包

程序包	说明
org.apache.pulsar.client.api	Pulsar Client API.

org.apache.pulsar.client.api中Consumer的使用

返回Consumer的org.apache.pulsar.client.api中的方法

修饰符和类型	方法	说明
Consumer<T>	ConsumerBuilder.subscribe()	Finalize the Consumer creation by subscribing to the topic.

返回变量类型为Consumer的类型的org.apache.pulsar.client.api中的方法

修饰符和类型	方法	说明
CompletableFuture<Consumer<T>>	ConsumerBuilder.subscribeAsync()	Finalize the Consumer creation by subscribing to the topic in asynchronous mode.

参数类型为Consumer的org.apache.pulsar.client.api中的方法

修饰符和类型	方法	说明
void	ConsumerEventListener.becameActive(Consumer<?> consumer, int partitionId)	Notified when the consumer group is changed, and the consumer becomes the active consumer.
void	ConsumerEventListener.becameInactive(Consumer<?> consumer, int partitionId)	Notified when the consumer group is changed, and the consumer is still inactive or becomes inactive.
Message<T>	ConsumerInterceptor.beforeConsume(Consumer<T> consumer, Message<T> message)	This is called just before the message is returned by receive(), MessageListener.received(Consumer, Message) or the CompletableFuture returned by receiveAsync() completes.
void	ConsumerInterceptor.onAcknowledge(Consumer<T> consumer, MessageId messageId, Throwable exception)	This is called consumer sends the acknowledgment to the broker.
void	ConsumerInterceptor.onAcknowledgeCumulative(Consumer<T> consumer, MessageId messageId, Throwable exception)	This is called consumer send the cumulative acknowledgment to the broker.
void	ConsumerInterceptor.onAckTimeoutSend(Consumer<T> consumer, Set<MessageId> messageIds)	This method will be called when a redelivery from an acknowledge timeout occurs.
void	ConsumerInterceptor.onNegativeAcksSend(Consumer<T> consumer, Set<MessageId> messageIds)	This method will be called when a redelivery from a negative acknowledge occurs.
default void	MessageListener.reachedEndOfTopic(Consumer<T> consumer)	Get the notification when a topic is terminated.
void	MessageListener.received(Consumer<T> consumer, Message<T> msg)	This method is called whenever a new message is received.