Spring配置里面出现嵌套异常的冲突类如何解决
Unexpected exception parsing XML document from class path resource [spring/appServlet/servlet-context.xml]; nested exception is org.springframework.context.annotation.ConflictingBeanDefinitionException: Annotation-specified bean name 'fastJsonHttpMessageConverter' for bean class [com.wst.bccm.util.FastJsonHttpMessageConverter] conflicts with existing, non-compatible bean definition of same name and class [com.wst.bccm.converter.FastJsonHttpMessageConverter]