logtableaction.java

hibernate应用测试,初学hibernate 的会员可以看看.

package com.action;

import org.apache.struts.action.*;
import java.io.*;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.util.List;
import java.sql.SQLException;

import com.bean.CompUser;
import com.dao.*;
import com.tool.pagetool.*;
import com.tool.QueryStrCreator;

/**
 * <p>Title: </p>
 *
 * <p>Description: </p>
 *
 * <p>Copyright: Copyright (c) 2007</p>
 *
 * <p>Company: </p>
 *
 * @author not attributable
 * @version 1.0
 */
public class LogTableAction  extends Action{
    public ActionForward execute(ActionMapping mapping,
                                ActionForm form,
                                HttpServletRequest request,
                                HttpServletResponse response) throws Exception {
       request.setCharacterEncoding("gb2312");
       response.setContentType("text/html;charset=gb2312");

       String currentPageStr = request.getParameter("currentPage");

        int currentPage = 1; //当前页码
        int size = 20; //每页的记录数

        try { //防止从地址栏直接输入非法页码
            if (currentPageStr != null) currentPage = new Integer(
                    currentPageStr).intValue();
        } catch (Exception e) {
            e.printStackTrace();
        }

        //处理分页
        //会话中是否已有分页生成工具
        PageTool pageTool = null;
        HttpSession session = request.getSession();
        pageTool = (PageTool) session.getAttribute("LogTablePageTool"); //有，则直接拿来用
        if (pageTool == null) { //没有，则新建，并放进会话中，以备下次用
            pageTool = PageToolBuilder.builder(new LogTableDAO());
            session.setAttribute("LogTablePageTool", pageTool);
        }
        //由分页工具生成分页
        Page page = null;
        try {
                page = pageTool.createPage(currentPage, size);
        } catch (SQLException ex) {
            ex.printStackTrace();
        }
        //将分页放进请求中，分发到下一个页面显示
        request.setAttribute("allLogerPage", page);



       return mapping.findForward("readLoger");
   }
}