按照官方的例子代碼如下：
@Component
@RabbitListener(queues="test_mq_testQueue")
public class Receiver {
@RabbitHandler
public void process(String msg){
System.out.println(msg);
}
}
但是運行接收消息時，后台一直循環報錯
Caused by: org.springframework.amqp.AmqpException: No method found for class [B
at org.springframework.amqp.rabbit.listener.adapter.DelegatingInvocableHandler.getHandlerForPayload(DelegatingInvocableHandler.java:127)
at org.springframework.amqp.rabbit.listener.adapter.DelegatingInvocableHandler.getMethodNameFor(DelegatingInvocableHandler.java:224)
at org.springframework.amqp.rabbit.listener.adapter.HandlerAdapter.getMethodAsString(HandlerAdapter.java:61)
at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.invokeHandler(MessagingMessageListenerAdapter.java:140)
at org.springframework.amqp.rabbit.listener.adapter.MessagingMessageListenerAdapter.onMessage(MessagingMessageListenerAdapter.java:106)
at org.springframework.amqp.rabbit.listener.AbstractMessageListenerContainer.doInvokeListener(AbstractMessageListenerContainer.java:822)
... 10 common frames omitted
后來查資料發現，@RabbitListener(queues=”test_mq_testQueue”)不需要放在類上。直接注釋在方法上就好
@Component
public class Receiver {
@RabbitListener(queues="test_mq_testQueue")
public void process(Message message){
System.out.println(new String(message.getBody()));
}
}