getlistaction.java

该程序实现的是部门管理系统

package student.servlet;

import java.io.IOException;
import java.io.PrintWriter;

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

import commons.PageInation;

import student.dao.StudentInfo;
import student.dao.StudentMan;
import student.dao.UserInfo;

public class GetListAction extends HttpServlet {

	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		UserInfo user=(UserInfo)request.getSession().getAttribute("user");
		//if(user==null){
		//	PrintWriter out=response.getWriter();
		//	out.println("未登录！请返回登录页面！");
		//	return;
		//}
		StudentMan stm=new StudentMan();
		//构架封装查询条件的对象
		StudentInfo student=new StudentInfo();
		student.setId(request.getParameter("id"));
		student.setName(request.getParameter("name"));
		//构建分页对象
		PageInation page=null;
		String currentPage=request.getParameter("currentPage");
		String totalCount=null;
		String totalPages=null;
		int pageSize=2;
		if(user==null||user.getType().equals("user")){
			pageSize=4;
		}
		if(currentPage!=null&&!currentPage.equals("")){
			totalCount=request.getParameter("totalCount");
			page=new PageInation(Integer.parseInt(totalCount),
								 Integer.parseInt(currentPage),
								 pageSize);
		}else{//第一次访问列表
			page=new PageInation(stm.getDataCount(student),
					 1,
					 pageSize);		
		}
		 request.setAttribute("StudentInfo", student);
		 request.setAttribute("PageInation", page);
		 request.setAttribute("DataList", stm.getDataList(page,student));
		 String URL="";
		 if(user==null||user.getType().equals("user")){
			 URL="/student/student_list.jsp";
		 }else{
			 URL="/admin/student_man.jsp";
		 }		 
		 getServletConfig().getServletContext().getRequestDispatcher(URL).forward(request,response);

		 
	}

	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request,response);
	}

}