When i read message from solace queue using a consumer i get some issues while casting it

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1

java.lang.ClassCastException: class com.solacesystems.jcsmp.impl.BytesMessageImpl cannot be cast to class com.solacesystems.jcsmp.TextMessage (com.solacesystems.jcsmp.impl.BytesMessageImpl and com.solacesystems.jcsmp.TextMessage are in unnamed module of loader ‘app’)
What i get it is SolaceBytesMessage, cant not case to TextMessage, Cant cast To Message, because message.getBody() wont work solace has not implemented it and i cant provide class name arguments.
I need to no how do we get the actual message from this bytes message ?

2

Hi Team,

We also get the same issue when spring cloud stream reply the message to non spring cloud stream service.

com.solacesystems.jcsmp.impl.BytesMessageImpl cannot be cast to com.solacesystems.jcsmp.TextMessage"

Code:

textMessage.setText(((TextMessage)replyMessage).getText());

Do we need to type cast to BytesMessage and use getData API and convert to String?

3

You will not be able to cast from BytesMessage to TextMessage. You will need to grab the bytes from the payload and convert to string.

I would do something like the following:

if (replyMessage instanceof TextMessage) {
textMessage.setText(((TextMessage)replyMessage).getText());
} else if (replyMessage instanceof BytesMessage) {
textMessage.setText(new String(((BytesMessage)replyMessage).getData()));
} else ...

Haven’t tested the above so I will put that caveat in. Plus there is likely a more efficient way of doing this, but this is the simplest.