MessageListener (Spring AMQP 2.4.2 API)

All Known Subinterfaces:

BatchMessageListener, ChannelAwareBatchMessageListener, ChannelAwareMessageListener, StreamMessageListener

All Known Implementing Classes:

AbstractAdaptableMessageListener, AmqpInvokerServiceExporter, AsyncRabbitTemplate, BatchingRabbitTemplate, BatchMessagingMessageListenerAdapter, BrokerEventListener, MessageListenerAdapter, MessagingMessageListenerAdapter, RabbitTemplate, StreamMessageListenerAdapter, TestRabbitTemplate

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.
```
@FunctionalInterface
public interface MessageListener
```
Listener interface to receive asynchronous delivery of Amqp Messages.

Author:

Mark Pollack, Gary Russell

Method Summary

All Methods Instance Methods Abstract Methods Default Methods
Modifier and Type	Method	Description
`default void`	`containerAckMode(AcknowledgeMode mode)`	Called by the container to inform the listener of its acknowledgement mode.
`default boolean`	`isAsyncReplies()`	Return true if this listener is request/reply and the replies are async.
`void`	`onMessage(Message message)`	Delivers a single message.
`default void`	`onMessageBatch(List<Message> messages)`	Delivers a batch of messages.

- Method Detail
  - onMessage
```
void onMessage(Message message)
```
    Delivers a single message.
    
    Parameters:
    
    message - the message.
  - containerAckMode
```
default void containerAckMode(AcknowledgeMode mode)
```
    Called by the container to inform the listener of its acknowledgement mode.
    
    Parameters:
    
    mode - the AcknowledgeMode.
    
    Since:
    
    2.1.4
  - isAsyncReplies
```
default boolean isAsyncReplies()
```
    Return true if this listener is request/reply and the replies are async.
    
    Returns:
    
    true for async replies.
    
    Since:
    
    2.2.21
  - onMessageBatch
```
default void onMessageBatch(List<Message> messages)
```
    Delivers a batch of messages.
    
    Parameters:
    
    messages - the messages.
    
    Since:
    
    2.2