struts2开发的oa办公系统，数据库应用mysql,用户分为管理员、经理、一般员工，分不同的业务，有员工管理、部门管理、名片夹管理、在线消息管理等-struts2 development of OA office systems, database applications mysql users into administrators, managers, employees, divided into different business, staff management, depar