unsatisfiedDependencyException

UnsatisfiedDependencyException是一个在Spring应用程序中常见的异常，它通常表示依赖注入失败。引用中提到的一种原因是dao接口无法创建bean，导致service层的依赖无法注入，进而导致controller层的依赖无法注入。这可能是由于缺少对应的@Service注解或配置错误导致的。可以通过检查每一层之间的对应关系，确保mapper层和xml之间能够正确对应，同时检查xml配置是否正确，字段是否映射完全。另外，还需要确保启动类上的注解路径全部扫描到，并且包名称没有错误。引用提供了一些解决方法，如添加@Service注解，检查层间对应关系和xml配置的正确性等。如果问题仍然存在，可以检查日志文件或调试程序，以查找更详细的错误信息。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
#### 引用[.reference_title]
- *1* [解决：UnsatisfiedDependencyException](https://blog.csdn.net/weixin_43885975/article/details/117340807)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *2* [解决 UnsatisfiedDependencyException 异常，避免走过的坑](https://blog.csdn.net/qq_44860722/article/details/122586661)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
- *3* [SPRING API 2.0.CHM](https://download.csdn.net/download/siriuslyly/1258535)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v92^chatsearchT3_1"}}] [.reference_item style="max-width: 33.333333333333336%"]
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