java 设置 bean 属性“dataSource”时无法解析对 bean“dataSource”的引用。factory.NoSuchBeanDefinitionException：
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Cannot resolve reference to bean 'dataSource' while setting bean property 'dataSource' .factory.NoSuchBeanDefinitionException:
提问by Blaze
This is the bean with this id defined in my spring-servlet.xml file
这是在我的 spring-servlet.xml 文件中定义的具有此 ID 的 bean
<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
这是完整的堆栈跟踪
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.getObject(AbstractBeanFactory.java:295)
this is my application context file defined in my WEB-INF folder
这是我在 WEB-INF 文件夹中定义的应用程序上下文文件
<?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
这是我完整的 web.xml 文件
<?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
这是我的 spring-servlet.xml 文件
<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">${jdbc.dialect}</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.connection.SetBigStringTryClob">true</prop>
<prop key="hibernate.jdbc.batch_size">0</prop>
</props>
</property>
</bean>
<bean id="multipartResolver"
class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<!-- one of the properties available; the maximum file size in bytes -->
<property name="maxUploadSize" value="10000000" />
</bean>
<tx:annotation-driven />
<bean id="transactionManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
</beans>
Please assist me find my way.
请帮我找到我的路。
回答by ekem chitsiga
From the look of things you are defining a dataSource in a DispatcherServletcontext configuration file i.e spring-servlet.xmlas you have specified. And the entityManagerFactoryin a root application contextfile. Beans in the root application context cannot reference those in the servlet application context file. You need to move your dataSourcebean to the hibernate-context.xmlfile.
从外观上看，您正在DispatcherServlet上下文配置文件中定义数据源，即spring-servlet.xml您指定的。并且entityManagerFactory在根应用程序上下文文件中。根应用程序上下文中的 Bean 不能引用 servlet 应用程序上下文文件中的那些。您需要将dataSourcebean移动到hibernate-context.xml文件中。
回答by Nemesis
What comes with your dependecies? I think you should include your datasource def in applicationContext.xmland then the hibernate thing should be happy.
你的依赖是什么？我认为你应该包括你的数据源 def applicationContext.xml，然后休眠的事情应该很高兴。
So... the
所以
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"
p:driverClassName="${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.xmland is removed from spring-servlet.xml
进入applicationContext.xml并从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.
然后嵌入在会话工厂 def 中的 hibernate-cfg.xml 应该找到它的数据源并在加载时感到高兴。
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.
最好将 servlet 映射和 mvc 定义与后端内容（bean 工厂等）隔离，因为将来需要时更容易更改它。
With what do you build your app?
你用什么来构建你的应用程序？
