Spring integration and AMQP on RabbitMQ throws exception Method handleToken(byte[]) cannot be found - spring

Question

This is my context config:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:int-amqp="http://www.springframework.org/schema/integration/amqp"
xmlns:rabbit="http://www.springframework.org/schema/rabbit"
xmlns:int="http://www.springframework.org/schema/integration"
xsi:schemaLocation="http://www.springframework.org/schema/integration/amqp http://www.springframework.org/schema/integration/amqp/spring-integration-amqp.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/rabbit http://www.springframework.org/schema/rabbit/spring-rabbit.xsd
http://www.springframework.org/schema/integration http://www.springframework.org/schema/integration/spring-integration.xsd">
<rabbit:connection-factory id="connectionFactory" host="localhost"/>
<rabbit:template id="amqpTemplate" connection-factory="connectionFactory"/>
<rabbit:queue name="upload-queue"/>
<rabbit:admin connection-factory="connectionFactory"/>
<rabbit:topic-exchange name="infrastructure-exchange">
<rabbit:bindings>
<rabbit:binding queue="upload-queue" pattern="ru.interosite.*"/>
</rabbit:bindings>
</rabbit:topic-exchange>
<int-amqp:outbound-channel-adapter
channel="toRabbit"
routing-key="ru.interosite.1"
amqp-template="amqpTemplate"
exchange-name="infrastructure-exchange"/>
<int-amqp:inbound-channel-adapter
channel="fromRabbit"
queue-names="upload-queue"
connection-factory="connectionFactory"
/>
<int:gateway id="infrastructureGateway" service-interface="com.dropbyke.web.api.service.InfrastructureGateway"/>
<int:channel id="toRabbit"/>
<int:channel id="fromRabbit"/>
<bean id="testInfrastructureServiceImpl" class="com.dropbyke.web.api.service.TestInfrastructureServiceImpl"/>
<int:service-activator input-channel="fromRabbit" ref="testInfrastructureServiceImpl" method="handleToken" />
<!-- A Spring Integration adapter that routes messages sent to the helloWorldChannel to the bean named "helloServiceImpl"'s hello() method -->
<!--<int:outbound-channel-adapter channel="fromRabbit" ref="testInfrastructureServiceImpl" method="handleToken"/>-->
</beans>
This is gateway interface:
public interface InfrastructureGateway {
#Gateway(requestChannel = "toRabbit")
void doUpload(UserTokenDTO tokenDTO);
}
Message endpoint that supposed to handle calls:
#MessageEndpoint
public class TestInfrastructureServiceImpl implements TestInfrastructureService {
public void handleToken( UserTokenDTO tokenDTO) {
System.out.println("Handle user token " + tokenDTO.getToken());
}
}
So when I invoke gateway's doUpload method I'm getting this error message:
Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1004E:(pos 8): Method call: Method handleToken(byte[]) cannot be found on com.dropbyke.web.api.service.TestInfrastructureServiceImpl type
If I exclude Rabbit part then all works fine. What should I do to make it work with Rabbit? Should I implement some converter from byte[] to my domain object UserTokenDTO?

Answer 1

As nicolas-labrot suggested I had to make my UserTokenDTO to be a Serializable. After that all works fine.