Spring AMQP convertSendAndReceive VS sendAndReceive - jwt

Question

I have a project where I send through AMQP a message with a signed JSON object. On the server side I have the following:
public class MyServerHandler implements MessageListener{
...
#Override
public void onMessage(Message msg)
{
String _payload = new String(msg.getBody(), StandardCharsets.UTF_8);
System.out.println(_payload);
...
Now, if I use the method convertSendAndReceive like this:
String msg = ...deo // JSON object (String)
Object response = getRabbitOperations().convertSendAndReceive(_myExchange, _myRoutingKey, msg,
new MessagePostProcessor()
{
public Message postProcessMessage(Message message) throws AmqpException
{
message.getMessageProperties().setDeliveryMode(MessageDeliveryMode.NON_PERSISTENT);
message.getMessageProperties().setRedelivered(false);
message.getMessageProperties().setUserId(_myUser);
message.getMessageProperties().setType(_myType);
return message;
}
}
);
When I get the contents of the AMQP message I get the character string sent but in quotation marks:
String _payload = new String(msg.getBody(), StandardCharsets.UTF_8);
System.out.println(_payload);
"eyJ4NWMiOlsiTUlJRHV6Q0NBcU9nQXdJQkFnSUNDMEV3RFFZSktvWklodmNOQVFFR....."
But if I use the sendAndReceive method, I don't get quotation marks:
MessageProperties mp = new MessageProperties();
mp.setDeliveryMode(MessageDeliveryMode.NON_PERSISTENT);
mp.setRedelivered(false);
mp.setUserId(_myUser);
mp.setType(_myType);
Message _m = new Message(msg.getBytes(), mp);
Object _response = getRabbitOperations().sendAndReceive(_myExchange, _myRoutingKey, _m);
On the server side I get(with the same code):
eyJ4NWMiOlsiTUlJRHV6Q0NBcU9nQXdJQkFnSUNDMEV3RFFZSktvWklodmNOQVFFR.....
Why is that? Can I change it to work the same way? And which would be the right one?
Thank you

Answer 1

The problem with sendAndReceive that it deals with message directly and bypasses MessageConverter. According to your quotation experience it looks like there is a JSON converter.
You can use SimpleMessageConverter. But that doesn't matter really: if you want clear byte[] to send, just do the same msg.getBytes() for the convertSendAndReceive.