RabbitTemplate dependency of autoconfigured RabbitMessagingTemplate with custom RabbitTemplate

[bijukunjummen]

RabbitMessagingTemplate has a dependency on RabbitTemplate, now if I were to define my custom RabbitTemplate, this autoconfiguration fails as then there are two RabbitTemplates available. Can you please suggest a good workaround, this is the exception:

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'rabbitMessagingTemplate' defined in class path resource [org/springframework/boot/autoconfigure/amqp/RabbitAutoConfiguration$MessagingTemplateConfiguration.class]: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.springframework.amqp.rabbit.core.RabbitTemplate]: : No qualifying bean of type [org.springframework.amqp.rabbit.core.RabbitTemplate] is defined: expected single matching bean but found 2: amqpTemplate,rubeExchangeTemplate; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [org.springframework.amqp.rabbit.core.RabbitTemplate] is defined: expected single matching bean but found 2: amqpTemplate,rubeExchangeTemplate
    at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:752)

Temporarily I have worked around this by defining my own RabbitMessageTemplate which prevents the autoconfigured one from being defined also.

[snicoll]

I don't think it has anything to do with the fact that you're trying to create a custom RabbitTemplate. The problem here is that you have several RabbitTemplate instances and boot does not know which one it has to pick. Flag either your amqpTemplate or rubeExchangeTemplate with @Primary and you'll be fine.

(Note: that kind of question is better suited to stackoverflow. Thanks!)

[bijukunjummen]

Thanks, yes, this is a good fix. I thought this was an issue with RabbitAutoConfiguration code, as the exception is from the autoconfiguration, not my code and that is why I had opened it as an issue here and not as a question in Stackoverflow.

[snicoll]

That's fine. We have a plan to improve this by the way, see #1702

[carlosdarienvizcaino]

Hey,

If you wish to have 2 or more RabbitTemplate defined in your rabbit-config.xml file your could do the following:

<rabbit:template
        id="rabbitMessagingTemplate"
        connection-factory="connectionFactory"
        retry-template="retryTemplate" />
<rabbit:template
            id="template1"
            connection-factory="connectionFactory"
            retry-template="retryTemplate"
            message-converter="jsonMessageConverter"
            exchange="queue1"
            routing-key="key1"/>
    <rabbit:template
            id="template2"
            connection-factory="connectionFactory"
            retry-template="retryTemplate"
            message-converter="jsonMessageConverter"
            exchange="exchange2"
            routing-key="key2"/>

Now, Spring Boot knows which RabbitTemplate to pick first (rabbitMessagingTemplate). Notice, this template definition does not have any exchange and/or routing key, At least in my application I don't use rabbitMessagingTemplate at ALL.

[GovindRajuSavi]

spring.main.allow-bean-definition-overriding=true

This property help.?

[mbhave]

@GovindRajuSavi Please ask questions on gitter or StackOverflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements.