问题及解决方案
问题一：Spring boot融合RocketMQ，启动时报错，更换spring boot版本或直接使用RocketMQ解决
<parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>1.3.6.RELEASE</version> </parent> <dependency> <groupId>org.apache.rocketmq</groupId> <artifactId>rocketmq-spring-boot-starter</artifactId> <version>2.1.0</version> </dependency> 报错信息：[ ERROR ] [2020-06-29 16:13:32] [main-org.springframework.boot.SpringApplication--821 line] - Application startup failedorg.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.apache.rocketmq.spring.autoconfigure.ListenerContainerConfiguration': Instantiation of bean failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.apache.rocketmq.spring.autoconfigure.ListenerContainerConfiguration$$EnhancerBySpringCGLIB$$85647c72]: No default constructor found; nested exception is java.lang.NoSuchMethodException: org.apache.rocketmq.spring.autoconfigure.ListenerContainerConfiguration$$EnhancerBySpringCGLIB$$85647c72.<init>() at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1105) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1050) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:772) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:760) at org.springframework.boot.SpringApplication.createAndRefreshContext(SpringApplication.java:360) at org.springframework.boot.SpringApplication.run(SpringApplication.java:306)