expected at least 1 bean which qualifies as autowire candidate for this depe错误的简单分析
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在web项目中,现在控制层使用的框架比较多的有Spring MVC,如果你的项目环境完全是你自己搭建的,那么当报
expected at least 1 bean which qualifies as autowire candidate for this depe错误的时候,首先你确实就要检查一下你的spring配置文件,从项目驱动时web.xml一直检查到对应驱动的各种配置文件例如ApplicationContext.xml、Spring MVC.xml等配置文件,但是这不是我今天要说的话题;
我最近看了很多猿友都对上面的错误有所建议,大多数都说spring配置文件的问题,下面就是我今天要说的主要内容:
1,首先spring配置文件有问题也是有可能的;
2,你在一家企业上班,在实际的项目开发过程中,公司很少让你去搭建自己的项目环境,现在稍微有点规模的公司都有自己公司内部封装好的一套或者几套项目框架,从底层一直封装到控制层乃至视图层,而且都是企业自己长期维护和优化的项目框架,在这么成熟的封装好的框架之下,各位猿友会觉得报这种错误还会是spring配置文件的问题吗?
所以有些问题还真的并不是本质上的问题,好了废话不说了,根据我的经验,出现上述问题的人为原因有可能是一下几点:
只要你确保你的web项目在运行时对应的配置文件都驱动执行了,如果你使用注解注入的话要确保你的配置文件中注解驱动是否加载,如果加载了的话如下:
1,你的应用层的实现类没有实现对应的接口,
2,注解书写错误,到时spring不能进行注入;
3,在一二控制器中注入的次数超过了两次,系统不能识别你到底要使用哪一个注入设计;
2,注解书写错误,到时spring不能进行注入;
3,在一二控制器中注入的次数超过了两次,系统不能识别你到底要使用哪一个注入设计;
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