解决：UnsatisfiedDependencyException 异常

原创 已于 2023-02-22 09:21:12 修改 · 742 阅读 · 0 ·
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humanwang
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#java #spring #开发语言

于 2023-02-22 09:15:16 首次发布
文章描述了一个在Spring框架中遇到的UnsatisfiedDependencyException问题，该问题源于dao接口对应的bean无法创建，进而影响了service和controller层的依赖注入。错误的根本在于缺少了特定jar包中的某个包。解决方案包括检查controller、service、dao层的注解使用、接口实现、XML映射文件的正确性，以及排查重复的Mapper.xml文件和接口名称。

问题描述：
重点报错信息：

Specified class is an interface
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'smsUnvsBean' :Unsatisfied dependency expressed through field 'freemarkService'

原因分析：
大致原因：dao接口无法创建bean，导致service层依赖无法注入，导致controller层依赖无法注入

归根结底：又一个bean创建失败

查找maven包里面地址com.ccb.unvs.下面没有design这个包，证明是jar包的问题，引入jar包解决

汇总了许多网上的办法：

controller层service层dao层注解是否都使用正确？
接口有没有写实现类，实现类实现的接口是否正确?
xml映射文件里路径大小写类型是否正确？
有重复命名的xxxMapper.xml文件吗？
接口名字是否重复？
 

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