org.springframework.beans.factory.BeanCreationException: Error creating bean with name ‘sqlSessionFactory’ defined in file [D:\eclipse代码.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\o2o\WEB-INF\classes\spring\spring-dao.xml]: Invocation of init method failed; nested exception is org.springframework.core.NestedIOException: Failed to parse mapping resource: ‘file [D:\eclipse代码.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\o2o\WEB-INF\classes\mapper\AreaDao.xml]’; nested exception is org.apache.ibatis.builder.BuilderException: Error parsing Mapper XML. The XML location is ‘file [D:\eclipse代码.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\o2o\WEB-INF\classes\mapper\AreaDao.xml]’. Cause: org.apache.ibatis.builder.BuilderException: Error resolving class. Cause: org.apache.ibatis.type.TypeException: Could not resolve type alias ‘com.lj.o2o.entity.Area’. Cause: java.lang.ClassNotFoundException: Cannot find class: com.lj.o2o.entity.Area

D:\eclipse代码.metadata.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\o2o\WEB-INF\classes目录下没有任何实体类