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我是spring mvc的新手，我有一个问题，那就是如何知道标签是否正在扫描正确的包？ 例如： 我已定义的命名找不到xml中定义的bean
<context:component-scan base-package="spring.mvc"/>一个标签，而该包的位置如下： 
，当我定义用户beans.xml中豆，如
<bean id="userService" class="spring.mvc.service.UserServiceImpl" />用户的beans.xml：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
\t xmlns:context="http://www.springframework.org/schema/context"
\t xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
\t xsi:schemaLocation=" http://www.springframework.org/schema/beans
\t \t \t \t \t \t \t http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
\t \t \t \t \t \t \t http://www.springframework.org/schema/context
\t \t \t \t \t \t \t http://www.springframework.org/schema/context/spring-context-3.0.xsd">
<context:component-scan base-package="spring.mvc"/>
<context:annotation-config />
<bean id="userService" class="spring.mvc.service.UserServiceImpl" />
<bean id="userDao" class="spring.mvc.dao.UserDaoImpl" />
<bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
<property name="dataSource" ref="datasource" />
</bean>
<bean id="datasource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/myusers" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
</beans>好像豆不能在我把在类路径中找到= “”
错误如下所示：
19:44:19.399 [localhost-startStop-1] WARN o.s.w.c.s.XmlWebApplicationContext - Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [spring.mvc.service.UserServiceImpl] for bean with name 'userService' defined in class path resource [config/user-beans.xml]; nested exception is java.lang.ClassNotFoundException: spring.mvc.service.UserServiceImpl
19:44:19.399 [localhost-startStop-1] DEBUG o.s.b.f.s.DefaultListableBeanFactory - Destroying singletons in org.s[email protected]65f7a781: defining beans [org.springframework.context.annotation.internalConfigurationAnnotationProcessor,org.springframework.context.annotation.internalAutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequiredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnnotationProcessor,org.springframework.context.annotation.internalPersistenceAnnotationProcessor,org.springframework.context.event.internalEventListenerProcessor,org.springframework.context.event.internalEventListenerFactory,userService,userDao,jdbcTemplate,datasource,org.springframework.web.servlet.view.InternalResourceViewResolver#0]; root of factory hierarchy
19:44:19.433 [localhost-startStop-1] ERROR o.s.web.servlet.DispatcherServlet - Context initialization failed
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [spring.mvc.service.UserServiceImpl] for bean with name 'userService' defined in class path resource [config/user-beans.xml]; nested exception is java.lang.ClassNotFoundException: spring.mvc.service.UserServiceImpl
\t at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1385) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.determineTargetType(AbstractAutowireCapableBeanFactory.java:641) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:609) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1484) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1007) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:741) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668) ~[spring-webmvc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634) ~[spring-webmvc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682) ~[spring-webmvc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553) ~[spring-webmvc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494) ~[spring-webmvc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138) [spring-webmvc-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at javax.servlet.GenericServlet.init(GenericServlet.java:158) [servlet-api.jar:3.1.FR]
\t at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183) [catalina.jar:8.5.15]
\t at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1099) [catalina.jar:8.5.15]
\t at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:989) [catalina.jar:8.5.15]
\t at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4931) [catalina.jar:8.5.15]
\t at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5241) [catalina.jar:8.5.15]
\t at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) [catalina.jar:8.5.15]
\t at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419) [catalina.jar:8.5.15]
\t at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409) [catalina.jar:8.5.15]
\t at java.util.concurrent.FutureTask.run(Unknown Source) [na:1.8.0_131]
\t at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) [na:1.8.0_131]
\t at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [na:1.8.0_131]
\t at java.lang.Thread.run(Unknown Source) [na:1.8.0_131]
Caused by: java.lang.ClassNotFoundException: spring.mvc.service.UserServiceImpl
\t at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1285) ~[catalina.jar:8.5.15]
\t at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1119) ~[catalina.jar:8.5.15]
\t at org.springframework.util.ClassUtils.forName(ClassUtils.java:250) ~[spring-core-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractBeanDefinition.resolveBeanClass(AbstractBeanDefinition.java:401) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractBeanFactory.doResolveBeanClass(AbstractBeanFactory.java:1432) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1377) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
\t ... 26 common frames omitted有人可以解释组件扫描是如何工作的吗？
在此先感谢
看到https://stackoverflow.com/questions/6807230/what-syntax-for-including-sub-packages-in-contextcomponent-scan –
对不起，我还没有得到它 –
如何发布你有错误。它似乎与* context：component-scan * –