Package org.springframework.integration.handler

Provides classes implementing various types of message handler.

Interface Summary

Interface	Description
AbstractReplyProducingMessageHandler.RequestHandler	An implementation of this interface is used to wrap the AbstractReplyProducingMessageHandler.handleRequestMessage(Message) method.
CompositeMessageHandler	Classes implementing this interface delegate to a list of handlers.
DelayHandlerManagement
DiscardingMessageHandler	Classes implementing this interface are capable of discarding messages.
GenericHandler<P>	A functional interface to specify MessageHandler logic with Java 8 Lambda expression:
HeaderPropagationAware	MessageHandlers implementing this interface can propagate headers from an input message to an output message.
MessageProcessor<T>	This defines the lowest-level strategy of processing a Message and returning some Object (or null).
MessageTriggerAction	Classes implementing this interface can take some action when a trigger Message is received.
PostProcessingMessageHandler	Implementations of this interface are subclasses of AbstractMessageHandler that perform post processing after the AbstractMessageHandler.handleMessageInternal(org.springframework.messaging.Message) call.

Class Summary

Class	Description
AbstractMessageHandler	Base class for MessageHandler implementations.
AbstractMessageProcessor<T>
AbstractMessageProducingHandler	The base AbstractMessageHandler implementation for the MessageProducer.
AbstractReactiveMessageHandler	Base class for ReactiveMessageHandler implementations.
AbstractReplyProducingMessageHandler	Base class for MessageHandlers that are capable of producing replies.
AbstractReplyProducingPostProcessingMessageHandler
BeanNameMessageProcessor<T>	An "artificial" MessageProcessor for lazy-load of target bean by its name.
BridgeHandler	A simple MessageHandler implementation that passes the request Message directly to the output channel without modifying it.
DelayHandler	A MessageHandler that is capable of delaying the continuation of a Message flow based on the result of evaluation delayExpression on an inbound Message or a default delay value configured on this handler.
DelayHandler.DelayedMessageWrapper
ExpressionCommandMessageProcessor	A MessageProcessor implementation that expects an Expression or expressionString as the Message payload.
ExpressionEvaluatingMessageHandler	A MessageHandler that evaluates the provided Expression expecting a void return.
ExpressionEvaluatingMessageProcessor<T>	A MessageProcessor implementation that evaluates a SpEL expression with the Message itself as the root object within the evaluation context.
LambdaMessageProcessor	The MessageProcessor implementation for method invocation on the single method classes - functional interface implementations.
LoggingHandler	MessageHandler implementation that simply logs the Message or its payload depending on the value of the 'shouldLogFullMessage' or SpEL 'logExpression' property.
MessageHandlerChain	A composite MessageHandler implementation that invokes a chain of MessageHandler instances in order.
MessageHandlerSupport	Base class for Message handling components that provides basic validation and error handling capabilities.
MethodInvokingMessageHandler	A MessageHandler that invokes the specified method on the provided object.
MethodInvokingMessageProcessor<T>	A MessageProcessor implementation that invokes a method on a target Object.
ReactiveMessageHandlerAdapter	A MessageHandler implementation to adapt a ReactiveMessageHandler for synchronous invocations.
ReplyProducingMessageHandlerWrapper	The AbstractReplyProducingMessageHandler wrapper around raw MessageHandler for request-reply scenarios, e.g.
ServiceActivatingHandler

Enum Summary

Enum	Description
LoggingHandler.Level

Exception Summary

Exception	Description
ReplyRequiredException	Exception that indicates no reply message is produced by a handler that does have a value of true for the 'requiresReply' property.