Spring Boot, SpringCloud, SpringCloud Alibaba project integrates RocketMQ. As soon as you start, you report an error:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.integration.channel.AbstractMessageChannel

Project POM dependency uses:

 <!--RocketMQ -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
        </dependency>

version is: 5.3.0.release

One starting project will report an error:

Description:

An attempt was made to call a method that does not exist. The attempt was made from the following location:

    com.alibaba.cloud.stream.binder.rocketmq.RocketMQMessageChannelBinder.createProducerMessageHandler(RocketMQMessageChannelBinder.java:172)

The following method did not exist:

    org.springframework.integration.channel.AbstractMessageChannel.getChannelInterceptors()Ljava/util/List;

The method's class, org.springframework.integration.channel.AbstractMessageChannel, is available from the following locations:

    jar:file:/D:/zoutao_job/maven_repository/org/springframework/integration/spring-integration-core/5.3.0.RELEASE/spring-integration-core-5.3.0.RELEASE.jar!/org/springframework/integration/channel/AbstractMessageChannel.class

It was loaded from the following location:

    file:/D:/zoutao_job/maven_repository/org/springframework/integration/spring-integration-core/5.3.0.RELEASE/spring-integration-core-5.3.0.RELEASE.jar


Action:

Correct the classpath of your application so that it contains a single, compatible version of org.springframework.integration.channel.AbstractMessageChannel

icon:

from the error message, it is known that it isspring-integration-core-5.3.0.RELEASE.jarproblem

Point in the source code, check the AbstractMessageChannel class and find that there is no GetChannelInterceptors method, and line at rocketMQMessageChannelBinder.java:172, an error occurs:

official website for a long time:
https://github.com/alibaba/spring-cloud-alibaba/pull/1503

probably means that the Spring-Integration-Core version comes with Spring-Cloud-Starter-Stream-Rocketmq is too high to revise and not applicable.

Because a Spring-Integration-core version is too easy to change the MQ version, it is too easy to make an error, so it is not adopted. In the previous version, the Spring-Integration-core version is 5.2.1, so we eliminate the packaging high version and change to a custom version.

Change the pom as follows:

<!--RocketMQ -->
<dependency>
    <groupId>com.alibaba.cloud</groupId>
    <artifactId>spring-cloud-starter-stream-rocketmq</artifactId>
    <exclusions>
        <exclusion>
            <groupId>org.springframework.integration</groupId>
            <artifactId>spring-integration-core</artifactId>
        </exclusion>
    </exclusions>
</dependency>
<dependency>
    <groupId>org.springframework.integration</groupId>
    <artifactId>spring-integration-core</artifactId>
    <version>5.2.1.RELEASE</version>
</dependency>

Excluding the original version of the original 5.3.0 or above, and the version 5.2.1 is used.

Starting project is normal:
View RocketMQMESSAGECHANLBINDER 172 lines are no longer popular.