开发时遇到的bug

数据库表字段和实体类属性不一致时会产生该异常（org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'sessionFactory' defined in class path resource [applicationContext.xml]: Invocation of init method failed; nested exception is org.hibernate.InvalidMappingException: Could not parse mapping document from input stream）

总的来说，就是实体类的属性和数据库的配置文件不一致导致。