博客系统，主要完成博文的撰写、修改、删除浏览功能，注册、登陆，查看、添加、删除好友，同时可以上传照片、管理自己的相册-Blog system, mainly to complete the writing of Bowen, modify, delete browsing capabilities, register, login, view, add, delete friends can upload photos at the same time manage their own albu