项目突然启动报错了
WARN | Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotatedElementUtils.hasAnnotation(Ljava/lang/reflect/AnnotatedElement;Ljava/lang/Class;)Z ERROR | Context initialization failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping': Invocation of init method failed; nested exception is java.lang.NoSuchMethodError: org.springframework.core.annotation.AnnotatedElementUtils.hasAnnotation(Ljava/lang/reflect/AnnotatedElement;Ljava/lang/Class;)Z搜索到StackOverflow中解释是包冲突，又根据报错信息来看是spring init方法报错,bean创建失败，找不到AnnotatedElementUtils.hasAnnotation方法，所以判定为spring包冲突。于是更换了spring几个版本，都问题依旧，最后发现新引入的activemq有问题
通过maven引入的activemq
<!-- https://mvnrepository.com/artifact/org.apache.activemq/activemq-all --> <dependency> <groupId>org.apache.activemq</groupId> <artifactId>activemq-all</artifactId> <version>${activemq.version}</version> </dependency>发现这个包下引入了整个spring包，引起了包冲突。
解决方法：不用maven引入，手动引入activemq的一个jar包即可。
