package com.huahuan.web.hbbk; import com.huahuan.database.DatabaseAccess; import com.huahuan.database.EasyMapsManager; import com.huahuan.servletutil.ServletUtil; import com.huahuan.web.hdjy.HdjyIndexAction; import java.io.IOException; import java.util.ArrayList; import java.util.HashMap; import java.util.logging.Level; import java.util.logging.Logger; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; /** * * @author evance */ @WebServlet(name = "ShowHbbkIndexAction", urlPatterns = "/ShowHbbkIndexAction.jsp") public class ShowHbbkIndexAction extends HttpServlet { /** * 下面是模式关键字 可以自行删除和增加自定义模式,关键字一定要大写 默认模式为OTHER=0,所以OTHER不能删除 */ public final static int OTHER = 0;//其它 public final static int SHOWONE = 2;//显示单个环保百科的条目内容 protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { request.setCharacterEncoding("UTF-8"); response.setContentType("text/html;charset=UTF-8"); execute(ServletUtil.setModel(request.getParameter("mode"), this), request, response); } // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code."> @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Handles the HTTP * <code>POST</code> method. * * @param request servlet request * @param response servlet response * @throws ServletException if a servlet-specific error occurs * @throws IOException if an I/O error occurs */ @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } /** * Returns a short description of the servlet. * * @return a String containing servlet description */ @Override public String getServletInfo() { return "Short description"; }// </editor-fold> /** * 显示一个百科条目的内容 */ private void showone(HttpServletRequest request, HttpServletResponse response) { String bkid = request.getParameter("bkid");//通过百科id来查找这个百科条目的内容 DatabaseAccess dao = new DatabaseAccess(); EasyMapsManager emm = new EasyMapsManager(dao); String sql = "select bkid,bkbt,bknr,bklb from hbbk where bkid=?"; emm.setPreparedParameter(Integer.parseInt(bkid)); ArrayList<HashMap> bk = emm.executeQuery(sql); request.setAttribute("bkid", Integer.parseInt(bkid)); request.setAttribute("bk", bk.get(0)); dao.close(); try { request.getRequestDispatcher("/web/hbbk/bknr.jsp").forward(request, response); } catch (ServletException ex) { Logger.getLogger(HdjyIndexAction.class.getName()).log(Level.SEVERE, null, ex); } catch (IOException ex) { Logger.getLogger(HdjyIndexAction.class.getName()).log(Level.SEVERE, null, ex); } } /** * 实现父类的抽象方法,下面的模式和方法可以自行增删 */ public void execute(int event, HttpServletRequest request, HttpServletResponse response) { /** * 下面是相关模式下所做的动作* */ switch (event) { case SHOWONE: showone(request, response); break; } } }