服务器启动后，发现无法创建bean，类确定存在，配置文件也没有问题，请问是什么原因造成这个异常

Question

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'testAction' defined in ServletContext resource [/WEB-INF/applicationContext-test.xml]: Cannot resolve reference to bean 'tencentMusicAction' while setting bean property 'tencentMusicAction'; nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.demo.web.action.TencentMusicAction] for bean with name 'tencentMusicAction' defined in ServletContext resource [/WEB-INF/applicationContext-test.xml]; nested exception is java.lang.ClassNotFoundException: com.demo.web.action.TencentMusicAction
ValueResolver.resolveReference(BeanDefinitionValueResolver.java:275)

Caused by: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.demo.web.action.TencentMusicAction] for bean with name 'tencentMusicAction' defined in ServletContext resource [/WEB-INF/applicationContext-test.xml]; nested exception is java.lang.ClassNotFoundException: com.demo.web.action.TencentMusicAction
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1138)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1102)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory$1.run(AbstractAutowireCapableBeanFactory.java:386)
at java.security.AccessController.doPrivileged(Native Method)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:380)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:264)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:221)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:261)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:185)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:164)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:269)
... 42 more
Caused by: java.lang.ClassNotFoundException: com.demo.web.action.TencentMusicAction
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1680)
at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1526)
at org.springframework.util.ClassUtils.forName(ClassUtils.java:242)
at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:383)
at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1135)
... 52 more

Answer 1

: Error creating bean with name 'testAction' defined in ServletContext resource [/WEB-INF/applicationContext-test.xml]: Cannot resolve reference to bean 'tencentMusicAction' while setting bean property 'tencentMusicAction';
看看你的Action类，里面的所有属性是不是都有set和get方法？
一般是系统在注入时产生的错误，你仔细看一下方法名之类的，有没有拼写错误