设置bean属性'dataSource'时，无法解析对bean'DataSource'的引用.factory.NoSuchBeanDefinitionException：

Question

This is the bean with this id defined in my spring-servlet.xml file

<bean id="dataSource"
        class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
        p:driverClassName="${jdbc.driverClassName}"
        p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
        p:password="${jdbc.password}" />

This is the complete stacktrace

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 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [META-INF/spring/hibernate-context.xml]: Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'dataSource' is defined
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:529)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:458)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:295)

this is my application context file defined in my WEB-INF folder

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

this is my complete web.xml file

<?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_3_0.xsd" id="WebApp_ID" version="3.0">
  <display-name>YummyFoods</display-name>
  <welcome-file-list>
    <welcome-file>/JSP/welcome.jsp</welcome-file>
  </welcome-file-list>
  <listener>
    <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
  </listener>
  <servlet>
    <servlet-name>spring</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>
  <servlet-mapping>
    <servlet-name>spring</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
  <servlet>
    <servlet-name>imageServlet</servlet-name>
    <servlet-class>com.yummyfoods.spring.servlet.ImageServlet</servlet-class>
</servlet>
  <servlet-mapping>
    <servlet-name>imageServlet</servlet-name>
    <url-pattern>/image/*</url-pattern>
</servlet-mapping>
<error-page>
    <error-code>404</error-code>
    <location>/error</location>
</error-page>
</web-app>

this is my spring-servlet.xml file

<mvc:resources location="/resources/" mapping="/resources/**"/>
    <mvc:default-servlet-handler/>          
    <bean id="jspViewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="viewClass" value="org.springframework.web.servlet.view.JstlView" />
        <property name="prefix" value="/JSP/" />
        <property name="suffix" value=".jsp" />
    </bean>

        <bean id="messageSource"
        class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basename" value="classpath:messages" />
        <property name="defaultEncoding" value="UTF-8" />
    </bean>


    <bean id="propertyConfigurer"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
        p:location="classpath:jdbc.properties" />

    <bean id="dataSource"
        class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
        p:driverClassName="${jdbc.driverClassName}"
        p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
        p:password="${jdbc.password}" />


    <bean id="sessionFactory"
        class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="dataSource" ref="dataSource" />
        <property name="configLocation">
            <value>classpath:hibernate-cfg.xml</value>
        </property>
        <property name="configurationClass">
            <value>org.hibernate.cfg.AnnotationConfiguration</value>
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">${jdbc.dialect}</prop>
                <prop key="hibernate.show_sql">true</prop>
                 <prop key="hibernate.connection.SetBigStringTryClob">true</prop>
                <prop key="hibernate.jdbc.batch_size">0</prop>
            </props>
        </property>
    </bean>

    <bean id="multipartResolver"
        class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

        <!-- one of the properties available; the maximum file size in bytes -->
        <property name="maxUploadSize" value="10000000" />
    </bean>

    <tx:annotation-driven />
    <bean id="transactionManager"
        class="org.springframework.orm.hibernate3.HibernateTransactionManager">
        <property name="sessionFactory" ref="sessionFactory" />
    </bean>
</beans>

Please assist me find my way.

Answer 1

From the look of things you are defining a dataSource in a DispatcherServlet context configuration file ie spring-servlet.xml as you have specified. And the entityManagerFactory in a root application context file. Beans in the root application context cannot reference those in the servlet application context file. You need to move your dataSource bean to the hibernate-context.xml file.

Answer 2

What comes with your dependecies? I think you should include your datasource def in applicationContext.xml and then the hibernate thing should be happy.

So... the

<bean id="dataSource"
         class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
         p:driverClassName="${jdbc.driverClassName}"
         p:url="${jdbc.databaseurl}" p:username="${jdbc.username}"
         p:password="${jdbc.password}" />

 <bean id="sessionFactory"
         class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
         <property name="dataSource" ref="dataSource" />
         <property name="configLocation">
             <value>classpath:hibernate-cfg.xml</value>
         </property>
         <property name="configurationClass">
             <value>org.hibernate.cfg.AnnotationConfiguration</value>
         </property>
         <property name="hibernateProperties">
             <props>
                 <prop key="hibernate.dialect">${jdbc.dialect}</prop>
                 <prop key="hibernate.show_sql">true</prop>
                  <prop key="hibernate.connection.SetBigStringTryClob">true</prop>
                 <prop key="hibernate.jdbc.batch_size">0</prop>
             </props>
         </property>
     </bean>
 <tx:annotation-driven />
     <bean id="transactionManager"
         class="org.springframework.orm.hibernate3.HibernateTransactionManager">
         <property name="sessionFactory" ref="sessionFactory" />
     </bean>

goes in applicationContext.xml and is removed from spring-servlet.xml

Then the hibernate-cfg.xml wich is embeded in the Session factory def should find it's data source and be happy at loading.

It's better to isolate servlet mapping and mvc definitions from back end stuff (bean factory etc...) as it is easier to change it in the future if needed.

With what do you build your app?