public interface SimpMessageSendingOperations extends MessageSendingOperations<String>
MessageSendingOperations with methods for use with
the Spring Framework support for Simple Messaging Protocols (like STOMP).
For more on user destinations see
UserDestinationResolver.
Generally it is expected the user is the one authenticated with the
WebSocket session (or by extension the user authenticated with the
handshake request that started the session). However if the session is
not authenticated, it is also possible to pass the session id (if known)
in place of the user name. Keep in mind though that in that scenario,
you must use one of the overloaded methods that accept headers making sure the
sessionId header has been set accordingly.
| Modifier and Type | Method and Description |
|---|---|
void |
convertAndSendToUser(String user,
String destination,
Object payload)
Send a message to the given user.
|
void |
convertAndSendToUser(String user,
String destination,
Object payload,
Map<String,Object> headers)
Send a message to the given user.
|
void |
convertAndSendToUser(String user,
String destination,
Object payload,
Map<String,Object> headers,
MessagePostProcessor postProcessor)
Send a message to the given user.
|
void |
convertAndSendToUser(String user,
String destination,
Object payload,
MessagePostProcessor postProcessor)
Send a message to the given user.
|
convertAndSend, convertAndSend, convertAndSend, convertAndSend, convertAndSend, convertAndSend, send, sendvoid convertAndSendToUser(String user, String destination, Object payload) throws MessagingException
user - the user that should receive the message.destination - the destination to send the message to.payload - the payload to sendMessagingExceptionvoid convertAndSendToUser(String user, String destination, Object payload, Map<String,Object> headers) throws MessagingException
By default headers are interpreted as native headers (e.g. STOMP) and
are saved under a special key in the resulting Spring
Message. In effect when the
message leaves the application, the provided headers are included with it
and delivered to the destination (e.g. the STOMP client or broker).
If the map already contains the key
"nativeHeaders"
or was prepared with
SimpMessageHeaderAccessor
then the headers are used directly. A common expected case is providing a
content type (to influence the message conversion) and native headers.
This may be done as follows:
SimpMessageHeaderAccessor accessor = SimpMessageHeaderAccessor.create();
accessor.setContentType(MimeTypeUtils.TEXT_PLAIN);
accessor.setNativeHeader("foo", "bar");
accessor.setLeaveMutable(true);
MessageHeaders headers = accessor.getMessageHeaders();
messagingTemplate.convertAndSendToUser(user, destination, payload, headers);
Note: if the MessageHeaders are mutable as in
the above example, implementations of this interface should take notice and
update the headers in the same instance (rather than copy or re-create it)
and then set it immutable before sending the final message.
user - the user that should receive the message (must not be null)destination - the destination to send the message to (must not be null)payload - the payload to send (may be null)headers - the message headers (may be null)MessagingExceptionvoid convertAndSendToUser(String user, String destination, Object payload, MessagePostProcessor postProcessor) throws MessagingException
user - the user that should receive the message (must not be null)destination - the destination to send the message to (must not be null)payload - the payload to send (may be null)postProcessor - a postProcessor to post-process or modify the created messageMessagingExceptionvoid convertAndSendToUser(String user, String destination, Object payload, Map<String,Object> headers, MessagePostProcessor postProcessor) throws MessagingException
See MessageSendingOperations.convertAndSend(Object, Object, java.util.Map) for important
notes regarding the input headers.
user - the user that should receive the messagedestination - the destination to send the message topayload - the payload to sendheaders - the message headerspostProcessor - a postProcessor to post-process or modify the created messageMessagingException