IndexManageAction.java

/*
 *这个是黄迎斌的servlet框架
 * http://opdps.hbnu.edu.cn/hyberbin
 */
package com.huahuan.manage.index;

import com.huahuan.servletutil.ServletUtil;
import com.huahuan.table.Hbxzs;
import com.jplus.json.EasyUiJson;
import java.io.IOException;
import java.util.List;
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 org.jplus.hyb.database.Hyberbin;

/**
 *
 * @author Administrator
 */
@WebServlet(name = "IndexManageAction", urlPatterns = "/manage/IndexManageAction.jsp")
public class IndexManageAction 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 SHOWLIST = 2;//显示列表
    public final static int UPDATE = 4;//更新记录

    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>

    /**
     * 显示环保小知识列表
     */
    private void showlist(HttpServletRequest request, HttpServletResponse response) {
        //禁止json缓存
        response.setHeader("pragma", "no-cache");
        response.setHeader("cache-control", "no-cache");
        response.setHeader("expires", "0");
        Hbxzs hbxzs = new Hbxzs();
        Hyberbin hyb = new Hyberbin(hbxzs);
        EasyUiJson easyui = new EasyUiJson(request);
        List list = hyb.showByMySqlPage("", easyui);
        easyui.putAll(list);
        ServletUtil.ajaxData(easyui.toDataString(), response);
    }

    /**
     * 修改环保小知识
     */
    private void update(HttpServletRequest request, HttpServletResponse response) {
        Hbxzs hbxzs = new Hbxzs();
        Hyberbin hyb = new Hyberbin(hbxzs);
        ServletUtil.loadByBean(request, hbxzs, true);
        boolean b = hyb.updateByKey("id");
        String message = b ? "操作成功" : "操作失败";
        ServletUtil.ajaxData(message, response, "html");

    }

    /**
     * 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 SHOWLIST:
                showlist(request, response);
                break;
            case UPDATE:
                update(request, response);
                break;
        }
    }
}