package com.lostfound.servlet; import com.lostfound.dao.InMemoryDAO; import com.lostfound.model.Item; import com.lostfound.util.SessionUtil; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import java.io.IOException; @WebServlet("/claim") public class ClaimServlet extends HttpServlet { protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { if (!SessionUtil.isLoggedIn(req)) { resp.sendRedirect("login.jsp"); return; } String itemId = req.getParameter("id"); Item item = InMemoryDAO.getItem(itemId); if (item == null) { resp.sendRedirect("search.jsp?error=物品不存在"); return; } req.setAttribute("item", item); req.getRequestDispatcher("/claim-confirm.jsp").forward(req, resp); } protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws IOException { String itemId = req.getParameter("itemId"); InMemoryDAO.markAsMatched(itemId); resp.sendRedirect("my-items.jsp?msg=认领成功!对方已获得积分。"); } }