springboot项目报错

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'routerFunctionMapping' defined in class path resource [com/itheima/reggie/config/WebMvcConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [org.springframework.web.servlet.function.support. RouterFunctionMapping]: Factory method 'routerFunctionMapping' threw exception; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/dataformat/cbor/CBORFactory

使用mvc消息转换器时报错，注释掉消息转换器代码项目就不报错

pom.xml中添加依赖

<dependency>
      <groupId>com.fasterxml.jackson.dataformat</groupId>
      <artifactId>jackson-dataformat-cbor</artifactId>
      <version>2.8.11</version>
</dependency>

• 这篇文章：SpringBoot项目连接数据库报错 也许能够解决你的问题，你可以看下

可能是jackson版本的问题，换个版本试试

依赖的版本有问题，发生冲突，换换版本试试