SpringBoot集成RocketMQ报错:Bad annotation definition in @ExtRocketMQTemplateConfiguration的解决方法

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1.问题缘由

使用官方提供的rocketmq-spring-boot-starter提供的例子写ExtRocketMQTemplate时候，修改了配置文件中的nameServer配置，改成了和rocketmq.name-server一样的值：

## 配置文件rocketmq:  name-server: 192.168.2.182:9876;192.168.2.183:9876...demo:  rocketmq:    ...    extNameServer: 192.168.2.182:9876;192.168.2.183:9876## Java Code@ExtRocketMQTemplateConfiguration(nameServer = "${demo.rocketmq.extNameServer}")public class ExtRocketMQTemplate extends RocketMQTemplate {}

2.问题描述

贴上了堆栈信息：

org.springframework.beans.factory.support.BeanDefinitionValidationException: Bad annotation definition in @ExtRocketMQTemplateConfiguration, nameServer property is same with global property, please use the default RocketMQTemplate!        at org.apache.rocketmq.spring.autoconfigure.ExtProducerResetConfiguration.validate(ExtProducerResetConfiguration.java:153) ~[rocketmq-spring-boot-2.0.3.jar:2.0.3]        at org.apache.rocketmq.spring.autoconfigure.ExtProducerResetConfiguration.registerTemplate(ExtProducerResetConfiguration.java:88) ~[rocketmq-spring-boot-2.0.3.jar:2.0.3]        at java.util.LinkedHashMap.forEach(LinkedHashMap.java:684) ~[na:1.8.0_144]        at org.apache.rocketmq.spring.autoconfigure.ExtProducerResetConfiguration.afterSingletonsInstantiated(ExtProducerResetConfiguration.java:75) ~[rocketmq-spring-boot-2.0.3.jar:2.0.3]...

3.问题解决

根据报错提示，nameServer不能设置为和上面rocketmq.name-server一样的值，改为不一样即可解此问题：

rocketmq:  name-server: 192.168.2.182:9876;192.168.2.183:9876...# properties used in the applicationdemo:  rocketmq:    ...    extNameServer: 192.168.2.182:9876

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