用eclipse做启动tomcat是报错，求老师或同学们解答，谢谢！！！！

我用eclipse做启动tomcat是报错啊：org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'empService' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'empDao' while setting bean property 'empDao'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'empDao' defined in class path resource [applicationContext.xml]: Cannot resolve reference to bean 'sesstionFactory' while setting bean property 'sesstionFactory'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'sesstionFactory' is defined