java - 异常 org.springframework.beans.factory.CannotLoadBeanClassException : Cannot find class

Question

我已经为这个错误苦苦挣扎了好几天。 我在 Eclipse 中有一个基于 Maven 的项目。我正在尝试在 Tomcat 中部署该应用程序。 我的版本是: Java:JDK 1.7.0_55 eclipse :露娜 马文:3.2.1 汤姆猫:7.0.54

虽然 maven 正确创建了 war 文件并成功部署在独立的 Tomcat 中。当我尝试在 Eclipse 中发布它时，同样的方法不起作用。

我收到以下错误。

SEVERE: Context initialization failed
org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.test.testhr.dao.EmployeeDAO] for bean with name 'employeeDAO' defined in ServletContext resource [/WEB-INF/applicationContext.xml]; nested exception is java.lang.ClassNotFoundException: com.test.testhr.dao.EmployeeDAO
    at org.springframework.beans.factory.support.AbstractBeanFactory.resolveBeanClass(AbstractBeanFactory.java:1327)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.predictBeanType(AbstractAutowireCapableBeanFactory.java:594)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:1396)
    at org.springframework.beans.factory.support.AbstractBeanFactory.isFactoryBean(AbstractBeanFactory.java:959)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:683)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:760)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403)
    at org.springframewor

我的 web.xml 如下所示

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"
    id="WebApp_ID" version="2.5">

    <context-param>  
        <param-name>primefaces.THEME</param-name>  
        <param-value>aristo</param-value>  
    </context-param> 
    <servlet>
        <servlet-name>FacesServlet</servlet-name>
        <servlet-class>javax.faces.webapp.FacesServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>FacesServlet</servlet-name>
        <url-pattern>/faces/*</url-pattern>
    </servlet-mapping>
    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml</param-value>
    </context-param>

    <filter>
        <filter-name>AuthenticationFilter</filter-name>
        <filter-class>com.test.testhr.core.ui.servlet.AuthenticationFilter</filter-class>
    </filter>

    <filter-mapping>
        <filter-name>AuthenticationFilter</filter-name>
        <url-pattern>/faces/*</url-pattern>
    </filter-mapping>

    <listener>
        <listener-class>
        org.springframework.web.context.ContextLoaderListener
        </listener-class>
    </listener> 

</web-app>

我的 applicationContext.xml 如下所示。

<?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:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
                        http://www.springframework.org/schema/beans/spring-beans.xsd
                        http://www.springframework.org/schema/tx                        
                        http://www.springframework.org/schema/tx/spring-tx-3.0.xsd
                        http://www.springframework.org/schema/context
                        http://www.springframework.org/schema/context/spring-context-3.0.xsd">

    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="loadTimeWeaver">
            <bean
                class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
        </property>
        <property name="persistenceXmlLocation" value="WEB-INF/persistence.xml" />
        <property name="persistenceUnitName" value="myUnit" />
        <property name="persistenceProviderClass" value="org.hibernate.ejb.HibernatePersistence" />
        <property name="jpaVendorAdapter">
            <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
        </property>
        <property name="jpaProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.Oracle10gDialect</prop>
                <prop key="showSql">true</prop>
            </props>
        </property>
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager"
        proxy-target-class="false" />

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="dataSource" ref="dataSource" />
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>
    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        <property name="driverClassName" value="oracle.jdbc.OracleDriver" />
        <property name="url" value="jdbc:oracle:thin:@//localhost:1521/orclktlt" />
        <property name="username" value="testhr" />
        <property name="password" value="testhr" />
    </bean>

    <context:component-scan base-package="com" />

    <!-- Declare DAO -->
    <bean id="genericDAO" class="com.test.testhr.dao.GenericDAO"
        abstract="true" />
    <bean id="employeeDAO" class="com.test.testhr.dao.EmployeeDAO"
        parent="genericDAO" />
    <bean id="userDAO" class=" com.test.testhr.dao.UserDAO" parent="genericDAO" />
    <bean id="departmentDAO" class=" com.test.testhr.dao.DepartmentDAO"
        parent="genericDAO" />
    <bean id="streamDAO" class="com.test.testhr.dao.StreamDAO"
        parent="genericDAO" />
    <bean id="lookupCodeDAO" class="com.test.testhr.dao.LookupCodeDAO"
        parent="genericDAO" />



    <!-- Declare Services -->
    <bean id="employeeService" class="com.test.testhr.service.employee.EmployeeService">
        <!-- <property name="employeeDAO" ref="employeeDAO" /> -->
    </bean>
    <bean id="logInService" class="com.test.testhr.service.authentication.LogInService" />
    <bean id="departmentService" class="com.test.testhr.service.settings.DepartmentService">
        <!-- <property name="departmentDAO" ref="departmentDAO" /> -->
    </bean>
    <bean id="streamService" class="com.test.testhr.service.settings.StreamService">
        <!-- <property name="streamDAO" ref="streamDAO" /> -->
    </bean>
    <bean id="lookupCodeService" class="com.test.testhr.service.settings.LookupCodeService">
        <!-- <property name="lookupCodeDAO" ref="lookupCodeDAO" /> -->
    </bean>

    <bean id="userService" class="com.test.testhr.service.user.UserService">
        <!-- <property name="userDAO" ref="userDAO" /> -->
    </bean>

    <!-- Other utility classes -->

    <!-- <bean id="lookupCodeCacheUtil" class="com.test.testhr.cache.util.LookupCodeCacheUtil"/> -->
    <!-- <bean id="variableContext" class="com.test.testhr.system.VariableContext" 
        scope="prototype" /> -->

    <!-- Security configuration -->
    <!-- <bean id="abstractEncrypptor" class="com.test.testhr.security.encryption.AbstractEncrypptor" 
        abstract="true"> -->
    <!-- <property name="password" value="test" /> -->
    <!-- <property name="pswdIterations" value="65536" /> -->
    <!-- <property name="keySize" value="256" /> -->
    <!-- </bean> -->
</beans>    

有人可以帮忙吗？

Answer 1

因为:

org.springframework.beans.factory.CannotLoadBeanClassException: Cannot find class [com.test.testhr.dao.EmployeeDAO]

表示找不到 com.test.testhr.dao.EmployeeDAO.class，您是否检查过您的 IDE Maven 插件生成的 war 中不存在此类？