EasyNetQ无法从使用RabbitMQ Java Client API发布的队列中读取消息

Question

We are using Coldfusion utilising the java RabbitMQ Client API to publish messages to a Queue, and then using EasyNetQ to read the messages from the queue using C#.

The message is a string.

The java Client is publishing messages as an unseralized bytearray with a content-type of text/plain.

When we try and read the message from the queue we always get a EasyNetQ.EasyNetQInvalidMessageTypeException thrown, no matter the type of the message as defined on the EasyNetQ side. I have tried it as byte array and just a basic object. I think EasyNetQ is expecting a serialized object every time?

The exception we are getting is

Message: 2344462 BasicProperties: (content-type=text/plain, content-encoding= , headers= , delivery-mode=1, priori ty=0, correlation-id= , reply-to= , expiration= , message-id= , timestamp= , typ e= , user-id= , app-id= , cluster-id=_)

Exception: EasyNetQ.EasyNetQInvalidMessageTypeException: Message type is incorrect. Expecte d 'System_Byte[]:mscorlib', but was ''

Can anyone help please?

Answer 1

EasyNetQ expects a JSON serialized UTF-8 body representing the .NET type given in the subscription method and the 'type' field of basic properties to be populated with a EasyNetQ style type description.

You should use the Advanced API if you want to do your own de-serialization.