queryaction.java

struts分页示例

/*
 * Generated by MyEclipse Struts
 * Template path: templates/java/JavaClass.vtl
 */
package prj13_1.action;

import java.util.ArrayList;

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

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

import prj13_1.PageController;
import dao.StudentDao;

public class QueryAction extends Action {

	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) {

		String str = request.getParameter("PageIndex");
		if(str==null)	{
			str = "1";
		}
		int currentPageIndex = Integer.parseInt(str);		
		
		PageController pc = (PageController)request.getAttribute("pc");
		if(pc==null){
			pc = new PageController();
			StudentDao studentDao = new StudentDao();
			ArrayList stus = studentDao.queryStu();	
			pc.setBigList(stus);
			request.setAttribute("pc", pc);			
		}
		
		pc.setCurentPageIndex(currentPageIndex);
		
		
		return new ActionForward("/display.jsp");
	}
}