Question

我使用maven添加jar与bean。我想在上下文文件中自动装配它们......

    <?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">

    <bean id="statisticsService" class="com.ac.kpi.AcStatisticsService">
        <constructor-arg name="dataService" ref="acDataService"/>
    </bean>

</beans>

问题：当我运行tomcat时，我得到错误：

Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.ac.kpi.StatisticsService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1326)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1072)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:967)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:543)

尽管所有maven依赖项都已导入并存在。更多在Idea中，在LinuxOS环境下工作，问题只出在eclipse，Windows操作系统中。

Answer 1

如果Spring没有找到任何自动装配的bean，就会抛出这种异常。这可能是因为您正在自动装配接口，但没有该接口的实际实现。检查您的StatisticsService是否属于这种情况。

Answer 2

我有时候和你有同样的问题。删除.m2中的本地com.ac. *包文件，然后再次下载。

无法在jar中找到bean中的maven依赖项的autowire，

2 个答案: