32.4 x 26.7 cm. (12.8 x 10.5 in.) ...
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4. 控制层（Controller） 包路径： org.example.second_hand_website.controller 核心Servlet： UserServlet：处理用户注册、登录、退出请求 ItemServlet：处理物品发布、编辑、删除、详情查看请求 IndexServlet：处理首页访问、物品搜索请求 ...
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