Question

java问题，求助！！！

2014-11-26 14:05:56 [org.springframework.beans.factory.support.DefaultListableBeanFactory]-[DEBUG] Creating instance of bean 'jacksonMessageConverter'
2014-11-26 14:05:56 [org.springframework.web.context.support.XmlWebApplicationContext]-[WARN] Exception encountered during context initialization - cancelling refresh attempt
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'jacksonMessageConverter' defined in class path resource [com/tmc/resource/conf/spring-mvc.xml]: Instantiation of bean failed; nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/annotation/JsonTypeInfo$As
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateBean(AbstractAutowireCapableBeanFactory.java:1095)
at

Answer 1

nested exception is java.lang.NoClassDefFoundError: com/fasterxml/jackson/annotation/JsonTypeInfo$As

应该是映射关系没写对 jacksonMessageConverter
这个Bean的映射类不对

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Answer 2

instance of bean 'jacksonMessageConverter' 类型不对啊大哥
而且看下你的包少了json包啊，骚年好好检查下你的包

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实例化错误啊，怎么是类型错误啊？

Answer 3

jacksonMessageConverter这个类有问题吧，bean创建异常了

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