Spring注入bean报错：Error creating bean with name的网上找不到的解决方案

今天在研究BaseService，在进行单元测试时，发现tomcat一直报错，错误代码如下：

org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘这是我的service测试类’: Injection of resource dependencies failed; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [这是我的service类] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@javax.annotation.Resource(shareable=true, lookup=, name=, description=, authenticationType=CONTAINER, type=class java.lang.Object, mappedName=)}

从信息中，可以看到是找不到需要注入的bean！我的程序是通过注解@Resource注入的。

尝试了网上的N种方法，无非以下几种：

配置文件没有开启注解扫描bean
spring配置文件里beans标签没配置default-autowire=”byname”
各种配置问题…
调用死循环

但是问题依然存在，我就开始去检查需要注入的类有没有问题，结果发现了。

@Transactional
@Service("roomTypeService")
public abstract class RoomTypeServiceImpl extends BaseServiceImpl<RoomType, Integer> implements RoomTypeService {// other fileds and methods......
}

不知道小伙伴们看出问题没有，这里的Service注解和name都没有问题，问题出在类写成了抽象类！！！抽象类啊！！！我把它去掉了就能正常跑起来了！！

虽然我不知道为什么当时写成了抽象类，但还是想分享出来让跟我犯错误的同学尽快脱离debug的痛苦。

说回问题的本质，为什么写成了抽象类就无法正常注入呢？这也正是java基础知识：注入相当于实例化一个对象，而在java的语法里面，抽象类（和接口）是无法实例化（new）的，所以就注入失败了！

好久没写过原创的文章了，这样不行，说好的坚持呢= =

Spring注入bean报错：Error creating bean with name的网上找不到的解决方案相关推荐

启动springboot报错Error creating bean with name 'dataSource' defined in class path resource
2019独角兽企业重金招聘Python工程师标准>>> 启动springboot报错Error creating bean with name 'dataSource' define ...
nacos的feign报错Error creating bean with name ‘configurationPropertiesBeans‘ defined in class path reso
nacos的feign报错Error creating bean with name 'configurationPropertiesBeans' defined in class path reso ...
springboot（原先是mybatis）整合mybatis-plus，注入报错Error creating bean with name 'sqlSessionFactory'
Error creating bean with name 'sqlSessionFactory' Caused by: java.lang.ClassNotFoundException: org.m ...
springboot 启动的时候报错 Error creating bean with name 'solrClient'
springboot 启动的时候报错: org.springframework.beans.factory.BeanCreationException: Error creating bean wit ...
SpringBoot启动报错Error creating bean with name 'xx': Unsatisfied dependency expressed through field xx
错误如下: 2020-05-11 08:55:21.333 WARN 937516 --- [ main] ConfigServletWebServerApplicationContext : Exc ...
记一次SpringBoot操作redis报错 Error creating bean with name ‘dataSource‘ defined in class path resource解决方法
代码块以下为Springboot操作Redis一些简单的测试代码 maven依赖 <dependency><groupId>org.springframework.boot& ...
报错-Error creating bean with name xxx: Unsatisfied dependency expressed through field xxx
报错异常: Error creating bean with name 'loginController': Unsatisfied dependency expressed through fiel ...
SpringBoot启动报错Error creating bean with name 'projectingArgumentResolverBeanPostProcessor'
这个错误 Error creating bean with name 'projectingArgumentResolverBeanPostProcessor' 发生的原因:切入点错误 @Aspect ...
activiti-explorer 启动报错 Error creating bean with name 'demoDataConfiguration'
来源:http://blog.csdn.net/huangning2/article/details/9247099 Activiti database setup As said in the on ...
【踩坑日记】springboot项目启动报错error create bean with name
前言启动springboot项目报错error create bean with name xxx 以为是哪个bean没有装配上,排查了所有的bean,发现都装配了原因分析仔细看了报错日志,发现 ...

Spring注入bean报错：Error creating bean with name的网上找不到的解决方案

Spring注入bean报错：Error creating bean with name的网上找不到的解决方案相关推荐

最新文章

热门文章