pageaction.java

struts写的一个分页代码

package com.tarena.sd0802.action;

import java.util.List;

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 com.tarena.sd0802.dao.StudentDao;
import com.tarena.sd0802.dao.impl.StudentImpl;
import com.tarena.sd0802.util.Pager;

public class PageAction extends Action {
	private StudentDao dao = new StudentImpl();
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		ActionForward forward = null;
		String currentpage = 
			request.getParameter("currentpage");
		int currentPage = 
			Integer.parseInt(currentpage);
		//先查总的记录数
		int totalSize = dao.findAllRows();
		Pager pager = 
			new Pager(currentPage,totalSize);
		//查找所有的学生
		List students =
			dao.selectAllStudent(
					currentPage, pager.getPageSize());
		request.setAttribute("students", students);
		request.setAttribute("pager", pager);
		forward = mapping.findForward("liststudent");
		return forward;
	}

}