我已经集成了Spring和Hibernate，当我使用jetty插件为maven运行我的应用程序时，Hibernate创建表但我的sessionFactory对象为null，
的web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
<welcome-file>index.html</welcome-file>
<welcome-file>index.htm</welcome-file>
</welcome-file-list>
<!-- The definition of the Root Spring Container shared by all Servlets
and Filters -->
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</context-param>
<!-- Creates the Spring Container shared by all Servlets and Filters -->
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<!-- Processes application requests -->
<servlet>
<servlet-name>appServlet</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value>/WEB-INF/spring/appServlet/servlet-context.xml,
/WEB-INF/spring/security-context.xml
</param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>appServlet</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
servlet的context.xml中
<?xml version="1.0" encoding="UTF-8"?>
<beans:beans xmlns="http://www.springframework.org/schema/mvc"
xmlns:p="http://www.springframework.org/schema/p" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:beans="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
<!-- DispatcherServlet Context: defines this servlet's request-processing
infrastructure -->
<!-- Enables the Spring MVC @Controller programming model -->
<annotation-driven />
<!-- Handles HTTP GET requests for /resources/** by efficiently serving
up static resources in the ${webappRoot}/resources directory -->
<resources mapping="/resources/**" location="/resources/" />
<!-- Resolves views selected for rendering by @Controllers to .jsp resources
in the /WEB-INF/views directory -->
<beans:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<context:component-scan base-package="com.fyp.ptma" />
<beans:bean id="propertyConfigurer"
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"
p:location="/WEB-INF/jdbc.properties" />
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close" p:driverClassName="${jdbc.driverClassName}"
p:url="${jdbc.databaseurl}" p:username="${jdbc.username}" p:password="${jdbc.password}" />
<beans:bean id="sessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<beans:property name="dataSource" ref="dataSource"></beans:property>
<beans:qualifier value="sessionFactory"></beans:qualifier>
<beans:property name="annotatedClasses">
<beans:list>
<beans:value>com.fyp.ptma.model.Application</beans:value>
<beans:value>com.fyp.ptma.model.ApplicationVersion</beans:value>
<beans:value>com.fyp.ptma.model.Defect</beans:value>
<beans:value>com.fyp.ptma.model.DefectDetail</beans:value>
<beans:value>com.fyp.ptma.model.Group</beans:value>
<beans:value>com.fyp.ptma.model.Downloader</beans:value>
<beans:value>com.fyp.ptma.model.Notification</beans:value>
<beans:value>com.fyp.ptma.model.RegisterStatus</beans:value>
<beans:value>com.fyp.ptma.model.User</beans:value>
<beans:value>com.fyp.ptma.model.Invitation</beans:value>
<beans:value>com.fyp.ptma.model.Installation</beans:value>
</beans:list>
</beans:property>
<beans:property name="hibernateProperties">
<beans:props>
<beans:prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect
</beans:prop>
<beans:prop key="hibernate.show_sql">true</beans:prop>
<beans:prop key="hibernate.hbm2ddl.auto">create</beans:prop>
</beans:props>
</beans:property>
</beans:bean>
<beans:bean id="transactionManager"
class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<beans:property name="sessionFactory" ref="sessionFactory" />
</beans:bean>
UserDao.java
@Repository
public class UserDao implements IUserDao {
@Autowired
@Qualifier(value="sessionFactory")
private SessionFactory sessionFactory;
public Session openSession() {
return sessionFactory.getCurrentSession();
}
public Long save(Object objToSave) throws PersistenceException,
ConstraintViolationException {
Session session = null;
try {
session = this.openSession();
session.beginTransaction();
session.save(objToSave);
session.getTransaction().commit();
} catch (Exception e) {
e.printStackTrace();
session.getTransaction().rollback();
} finally {
// session.close();
}
return null;
}
public Long update(Object objToUpdate) throws PersistenceException {
// TODO Auto-generated method stub
return null;
}
public boolean delete(Object objToDelete) throws PersistenceException,
ConstraintViolationException {
// TODO Auto-generated method stub
return false;
}
public List<Application> getAllApplications(User user)
throws HibernateException {
// TODO Auto-generated method stub
return null;
}
public Application getApplication(User user) throws HibernateException {
// TODO Auto-generated method stub
return null;
}
public boolean authenticateLogin(User user) throws AuthenticationException,
HibernateException {
Session session = this.openSession();
session.beginTransaction();
Criteria criteria = session.createCriteria(User.class);
criteria.add(Restrictions.eq("email", user.getEmail()));
User userDB = (User) criteria.uniqueResult();
return userDB.getPassword().equals(user.getPassword());
}
public User getUserByEmail(String email) throws HibernateException {
Session session = this.openSession();
session.beginTransaction();
Criteria criteria = session.createCriteria(User.class);
criteria.add(Restrictions.eq("email", email));
User userDB = (User) criteria.uniqueResult();
// session.close();
return userDB;
}
}
我的控制器
@ResponseBody
@RequestMapping(value = "/processRegistration.html", method = RequestMethod.POST)
public String processRegistration(@ModelAttribute("user") User user,
Model model, BindingResult result) {
UserDao uDao = DaoFactory.getUserDao();
uDao.save(user);
return "ok";
}
当我在我的控制器中调用uDao.save时，UserDao的sessionFactory对象为null，但在初始化期间，当我在下面的线上尝试我的控制器时，我没有得到任何接线错误，
ApplicationContext context = new AnnotationConfigApplicationContext（ “com.fyp.ptma.dao”）;
在提交表单时抛出异常：
: No matching bean of type [org.hibernate.SessionFactory] 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)}
答案 0 :(得分：0)
这是愚蠢但我正在做的事情是AutoWired我的SessionFactory和Dao Class但是当我从Dao Factory获得Dao时我回来了Dao();这导致创建了全新的对象，因为SessionFactory是Dao中的实例变量，它的默认值为Object，null在这里，下面是我的bug剪断
public class UserDao{
@AutoWired
private SessionFactory sessionFactory;
...
//more code
}
public static Dao getUserDao() {
return new UserDao();
}