org.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current 出错

	org.springframework.orm.hibernate4.SpringSessionContext.currentSession(SpringSessioorg.hibernate.HibernateException: Could not obtain transaction-synchronized Session for current threadnContext.java:134)

	org.hibernate.internal.SessionFactoryImpl.getCurrentSession(SessionFactoryImpl.java:1014)
	com.eric.cms.content.dao.UserDaoImpl.addUser(UserDaoImpl.java:21)
	com.eric.cms.content.service.UserServiceImpl.addUser(UserServiceImpl.java:21)
	com.eric.cms.content.controller.LoginController.login(LoginController.java:27)
	sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	java.lang.reflect.Method.invoke(Method.java:597)
	org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:175)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:446)
	org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:434)

在配置spring mvc时，如果报上面的错，那么在web.xml文件中加上下面的配置

<filter>
		<filter-name>SpringOpenSessionInViewFilter</filter-name>
		<filter-class>org.springframework.orm.hibernate4.support.OpenSessionInViewFilter</filter-class>
	</filter>
	<filter-mapping>
    	<filter-name>SpringOpenSessionInViewFilter</filter-name>
    	<url-pattern>/*</url-pattern>
	</filter-mapping>