booksaction.java

图书商城系统

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package com.tang.admin.struts.action;

import java.util.ArrayList;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.struts.action.Action;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.action.ActionMessage;

import com.tang.admin.foruse.AdminBean;
import com.tang.admin.foruse.BookBean;
import com.tang.admin.foruse.BookDAO;

/** 
 * MyEclipse Struts
 * Creation date: 06-01-2008
 * 
 * XDoclet definition:
 * @struts.action validate="true"
 */
public class BooksAction extends Action {
	/*
	 * Generated Methods
	 */

	/** 
	 * Method execute
	 * @param mapping
	 * @param form
	 * @param request
	 * @param response
	 * @return ActionForward
	 */
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {
		// TODO Auto-generated method stub
		String target = "failure";
		HttpSession session = request.getSession();
		String username = null;
		AdminBean bean = (AdminBean)session.getAttribute("user");
		ActionErrors errors = new ActionErrors();
		int pageNow = 1;
		String page = request.getParameter("pageNow");
		if(page!=null)
		{
			pageNow = Integer.parseInt(page);
		}
		int first = (pageNow-1)*10;
		int last = first+10;
		if(bean!=null)
		{
			username = bean.getUsername();
		}
		if(username!=null)
		{
			target = "success";
			BookDAO facade = new BookDAO();
			facade.open();
			ArrayList useral = facade.select("select * from books limit "+first+","+last);
			StringBuffer buffer = new StringBuffer("<tr  bgcolor=\"gray\"><th align=\"center\">书号</th>" +
					"<th align=\"center\">书名</th>" +
					"<th align=\"center\">分类</th>" +
					"<th align=\"center\">价格</th>" +
					"<th align=\"center\">购买次数</th>" +
					"<th align=\"center\">作者</th>" +
					"<th align=\"center\">出版社</th>" +
					"<th align=\"center\">删除</th>" +
					"<th align=\"center\">修改</th>" +
					"<th align=\"center\">增加</a></tr>");
			StringBuffer lists = new StringBuffer();
			for(int i= 0;i<useral.size();i++){
				BookBean userbean = (BookBean)useral.get(i);
				lists.append("<tr><td>"+userbean.getId()+"</td><td>"+userbean.getName()+"</td>" +
						"<td>"+userbean.getClas()+"</td><td>"+userbean.getPrice()+"</td>"+
						"<td>"+userbean.getPurchasetimes()+"</td><td>"+userbean.getAuthor()+"</td>"+
						"<td>"+userbean.getPublishhouse()+"</td>"+
						"<td><a href=deletebook.do?uid="+userbean.getId()+" onclick=\"return window.confirm('你确定要删除吗？')\">删除</a></td>" +
						"<td><a href=premodify.do?id="+userbean.getId()+">修改</td>" +
						"<td><a href=preaddbook.do>增加</td></tr>");
			}
			facade.open();
			int pageNum = facade.getPageNum();
			StringBuffer pagination = new StringBuffer();
			if(pageNum!=0){
				if(pageNow!=1){
					pagination.append("<a href=books.do?pageNow="+1+"><font size=2 color=gray>首页</font></a>&nbsp;");
					pagination.append("<a href=books.do?pageNow="+(pageNow-1)+"><font size=2 color=gray>上一页</font></a>&nbsp;");	
				}
				if(pageNow!=pageNum){
					pagination.append("<a href=books.do?pageNow="+(pageNow+1)+"><font size=2 color=gray>下一页</font></a>&nbsp;");
					pagination.append("<a href=books.do?pageNow="+pageNum+"><font size=2 color=gray>尾页</font></a>&nbsp;");
				}
			}	
			request.setAttribute("pagination", pagination);
			request.setAttribute("buffer", buffer);
			request.setAttribute("lists", lists);
		}
		else {
			ActionMessage msg = new ActionMessage("您尚未登录", false);
			errors.add("login", msg);
			request.setAttribute(org.apache.struts.Globals.ERROR_KEY, errors);
			mapping.findForward(target);
		}
		return mapping.findForward(target);
	}
}