/*
*这个是黄迎斌的servlet框架
* http://opdps.hbnu.edu.cn/hyberbin
*/
package com.huahuan.web.hbbk;
import com.huahuan.database.DatabaseAccess;
import com.huahuan.database.EasyMapsManager;
import com.huahuan.servletutil.ServletUtil;
import com.huahuan.tools.Util;
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 = "HbbkIndexAction", urlPatterns = "/HbbkIndexAction.jsp")
public class HbbkIndexAction 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 SHOWBKLIST = 3;//显示活动封面列表
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>
/**
* 得到活动类别的列表,这个只在第一次进入页面时需要存放
*/
private ArrayList<HashMap> showbklblist(HttpServletRequest request, HttpServletResponse response) {
DatabaseAccess dao = new DatabaseAccess();
EasyMapsManager emm = new EasyMapsManager(dao);
String sql = "select * from bklb";
ArrayList<HashMap> bklblist = emm.executeQuery(sql);
dao.close();
return bklblist;
}
/**
* 显示环保百科列表
*/
private void showbklist(HttpServletRequest request, HttpServletResponse response) {
String index = request.getParameter("index");
String bklb = request.getParameter("bklb");
if (Util.isEmpty(bklb) || !Util.isInteger(bklb)) {
bklb = "1";
}
String page = request.getParameter("page");
if (Util.isEmpty(page) || !Util.isInteger(page)) {
page = "1";
}
int pageSize = 9;
DatabaseAccess dao = new DatabaseAccess();
EasyMapsManager emm = new EasyMapsManager(dao);
String sql = "select bkid,bkbt,bklb,bknr,bksj from hbbk";
String range = " limit " + (Integer.parseInt(page) - 1) * pageSize + "," + pageSize;
String where = "";
String searchName = request.getParameter("searchName");
String searchValue = request.getParameter("searchValue");
if (!Util.isEmpty(searchValue) && !Util.isEmpty(searchName)) {//查询
where = " where " + searchName + " like ? order by bkid desc";
emm.setPreparedParameter("%" + searchValue + "%");
} else {
where = " where bklb=? order by bkid desc";
emm.setPreparedParameter(Integer.parseInt(bklb));
}
ArrayList<HashMap> bklist = emm.executeQuery(sql + where + range);
request.setAttribute("bklist", bklist);
//存放用于分页的信息
if (!Util.isEmpty(searchValue) && !Util.isEmpty(searchName)) {
where = " where " + searchName + " like ?";
emm.setPreparedParameter("%" + searchValue + "%");
} else {
where = " where bklb=?";
emm.setPreparedParameter(Integer.parseInt(bklb));
}
int total = emm.executeQuery(sql + where).size();
int totalpages = total % pageSize == 0 ? total / pageSize : total / pageSize + 1;
request.setAttribute("totalpages", totalpages);
request.setAttribute("page", Integer.parseInt(page));
ArrayList<HashMap> bklblist = showbklblist(request,response);
request.setAttribute("bklblist", bklblist);
//存放百科类别的信息
request.setAttribute("bklb", Integer.parseInt(bklb));
emm.setPreparedParameter(Integer.parseInt(bklb));
request.setAttribute("lbmc", emm.executeQuery("select lbid,lbmc from bklb where lbid=?").get(0).get("lbmc").toString());
if (index != null) {
if (index.equals("index")) {
request.setAttribute("bkid", Integer.parseInt(request.getParameter("bkid")));
}
}
dao.close();
try {
request.getRequestDispatcher("/web/hbbk/hbbk.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 SHOWBKLIST:
showbklist(request,response);
break;
}
}
}