I have browsed many related topics and tried different ways, but the error is still there. Environment: Spring data jpa, Hibernate, maven, tomcat7
Error Stack:
org.apache.catalina.core.StandardContext listenerStart 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 'userController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.zzz.service.UserService com.zzz.controller.UserController.userService; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.zzz.service.UserService] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)} at ...
applicationContext.xml
<beans xmlns="http://www.springframework.org/schema/beans" ... ... >
<context:component-scan base-package="com.zzz">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>
<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/zzz" />
<property name="username" value="root" />
<property name="password" value="root" />
</bean>
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="com.zzz.entity" />
<property name="dataSource" ref="dataSource" />
<property name="jpaProperties">
<props>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
</props>
</property>
<property name="persistenceProvider">
<bean class="org.hibernate.jpa.HibernatePersistenceProvider" />
</property>
</bean>
<tx:annotation-driven transaction-manager="transactionManager" />
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="dataSource" ref="dataSource" />
</bean>
<jpa:repositories base-package="com.zzz.repository" />
dispatcher-servlet.xml
<beans xmlns="http://www.springframework.org/schema/beans" ... ... >
<context:component-scan base-package="com.zzz.controller" />
<mvc:annotation-driven />
<mvc:resources mapping="/static/**" location="static/" />
<bean id="tilesConfigurer"
class="org.springframework.web.servlet.view.tiles3.TilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/defs/templates.xml</value>
</list>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.tiles3.TilesView" />
</bean>
</beans>
UserController.java
@Controller
public class UserController {
@Autowired
private UserService userService;
@RequestMapping("/users")
public String users(Model model) {
model.addAttribute("users", userService.findAll());
return "users";
}
}
UserService.java
@Service
public class UserService {
@Autowired
private UserRepository userRepository;
public List<User> findAll() {
return userRepository.findAll();
}
}
UserRepository.java
public interface UserRepository extends JpaRepository<User, Integer> {
}
UDPATE 1
There are 2 autowired errors:
Could not autowire field: private com.zzz.repository.UserRepository com.zzz.service.UserService.userRepository
could not autowire field: private com.zzz.service.UserService com.zzz.controller.UserController.userService
UPDATE 2
I've tried to use servlet-dispatcher.xml as the only configuration file (put the content of applicationContext.xml into it), it works fine. So it's the problem between these 2 xml files, but I couldn't tell it.
UPDATE 3
I renamed applicationContext.xml to root-context.xml, and set the contextConfigLocation to it in web.xml, the error disappeared!
It seems to be some configuration error about the applicationContext.xml, anybody could help?
