Spring错误创建bean

Question

我对JAVA web应用程序非常陌生，所以请记住这一点。我承担了一个非常大的项目，令人望而生畏。我终于修复了Maven依赖，现在在Tomcat上运行时遇到了第一个错误。

SEVERE: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'billfoldApplicationDaoImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void eu.digient.billfold.support.dao.AbstractBaseDao.init(org.hibernate.SessionFactory); nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl] for bean with name 'itemConfigFactoryImpl' defined in URL [jar:file:/Users/Stu/Development/EclipseFresh/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/crazyowls-demo-web/WEB-INF/lib/crazyowls-game-1.0-SNAPSHOT.jar!/ctx-grazyowl-game.xml]; nested exception is java.lang.ClassNotFoundException: eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:289)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1146)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:519)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:296)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:223)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:293)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:628)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:932)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:479)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:410)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:112)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1559)
at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1549)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire method: public void eu.digient.billfold.support.dao.AbstractBaseDao.init(org.hibernate.SessionFactory); nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl] for bean with name 'itemConfigFactoryImpl' defined in URL [jar:file:/Users/Stu/Development/EclipseFresh/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/crazyowls-demo-web/WEB-INF/lib/crazyowls-game-1.0-SNAPSHOT.jar!/ctx-grazyowl-game.xml]; nested exception is java.lang.ClassNotFoundException: eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:604)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:87)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:286)
... 22 more
 Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl] for bean with name 'itemConfigFactoryImpl' defined in URL [jar:file:/Users/Stu/Development/EclipseFresh/.metadata/.plugins/org.eclipse.wst.server.core/tmp0/wtpwebapps/crazyowls-demo-web/WEB-INF/lib/crazyowls-game-1.0-SNAPSHOT.jar!/ctx-grazyowl-game.xml]; nested exception is java.lang.ClassNotFoundException: eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1281)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:575)
at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1350)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doGetBeanNamesForType(DefaultListableBeanFactory.java:355)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBeanNamesForType(DefaultListableBeanFactory.java:334)
at org.springframework.beans.factory.BeanFactoryUtils.beanNamesForTypeIncludingAncestors(BeanFactoryUtils.java:187)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:897)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:855)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:770)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredMethodElement.inject(AutowiredAnnotationBeanPostProcessor.java:561)
... 24 more
 Caused by: java.lang.ClassNotFoundException: eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1714)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1559)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:255)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:416)
at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1302)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1273)
... 33 more

包含eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl模块的Spring配置：

<?xml version="1.0" encoding="UTF-8"?>
 <beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xmlns:context="http://www.springframework.org/schema/context"
   xmlns:util="http://www.springframework.org/schema/util"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
                       http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
                       http://www.springframework.org/schema/context
                       http://www.springframework.org/schema/context/spring-context-3.1.xsd
                       http://www.springframework.org/schema/util
                       http://www.springframework.org/schema/util/spring-util-3.1.xsd">
<context:annotation-config />

<context:component-scan base-package="eu.digient.billfold.goshgame.game"/>

<context:property-placeholder properties-ref="goshgameProperties" ignore-unresolvable="true" />
<util:properties id="goshgameProperties" location="classpath:goshgame.properties" />

<bean id="itemConfigFactoryImpl" class="eu.digient.billfold.goshgame.game.level.ItemConfigFactoryImpl">
    <property name="properties" ref="goshgameProperties"/>
</bean>

Answer 1

关于@autowired是什么和做什么，有一个很好的答案-了解Spring@autowired的用法我建议您使用@inject而不是@autowired，因为@autowired是Spring特定的注释。这里可以找到更多信息--注入、资源和Autowired注释我问过类似的关于属性和使用@Autowired创建bean的问题：使用JdbcTemplate连接到数据库bean可能bean的问题在于您的属性（.properties或.xml）文件。

是的，spring显然没有找到您正在搜索的类。您可以尝试在目标目录中搜索它。