thshowaction.java

在线考试功能

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

import java.io.IOException;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.apache.struts.actions.DispatchAction;

import com.onlinestudy.domain.Classes;
import com.onlinestudy.domain.Students;
import com.onlinestudy.service.StudentService;


public class ThshowAction extends DispatchAction {
	
	
	StudentService studentService;
	//显示增加学生页面
	public ActionForward showAddStudents(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		List list = studentService.selectClasses();
		request.setAttribute("list", list);

		request.getRequestDispatcher("addstudent.jsp").forward(request, response);
		return null;
	}
	
	
	//显示班级管理页面
	public ActionForward showAddclasses(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		List list = studentService.selectClasses();
		request.setAttribute("list", list);
		request.getRequestDispatcher("class_list.jsp").forward(request, response);
		return null;
	}
	
	
	
	//显示修改学生页面
	public ActionForward showUdateStudents(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
			
			int id = Integer.parseInt(request.getParameter("id"));
			Students students = studentService.selectStudentById(id);
			List list = studentService.selectClasses();
			request.setAttribute("list", list);
			request.setAttribute("students", students);
			
		request.getRequestDispatcher("updatestudent.jsp").forward(request, response);
		return null;
	}
	
	
	
	//分页查询学生列表
	public ActionForward showStudentList(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception{
			int currentPage = 1;
			currentPage = Integer.parseInt(request.getParameter("nextpage"));
			int totalStudents = studentService.selectAllStudent("select id from Students");       
			int length = 10;       //读取数据记录数
			String hql = "from Students";
			int totalPages = (totalStudents-1)/length+1;
			if(currentPage < 1){
					currentPage = 1;
				}										
			if(currentPage > totalPages){
				currentPage = totalPages;
			}
			int offset = (currentPage-1)*length;  //开始取数据的下标
			List list = studentService.selectStudentForPage(hql, offset, length);
			request.setAttribute("totalStudents", Integer.toString(totalStudents));
			request.setAttribute("totalPages", Integer.toString(totalPages));
			request.setAttribute("currentPage", Integer.toString(currentPage));
			request.setAttribute("list", list);

		request.getRequestDispatcher("student_list.jsp").forward(request, response);
		return null;
	}
	
	
	
	//查询未审核的学生
	public ActionForward showNewStudentList(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception{
			int currentPage = 1;
			currentPage = Integer.parseInt(request.getParameter("nextpage"));
			int totalStudents = studentService.selectAllStudent("select id from Students where ispass!='是'");       
			int length = 10;       //读取数据记录数
			String hql = "from Students where ispass!='是'";
			int totalPages = (totalStudents-1)/length+1;
			if(currentPage < 1){
					currentPage = 1;
				}										
			if(currentPage > totalPages){
				currentPage = totalPages;
			}
			int offset = (currentPage-1)*length;  //开始取数据的下标
			List list = studentService.selectStudentForPage(hql, offset, length);
			request.setAttribute("totalStudents", Integer.toString(totalStudents));
			request.setAttribute("totalPages", Integer.toString(totalPages));
			request.setAttribute("currentPage", Integer.toString(currentPage));
			request.setAttribute("list", list);

		request.getRequestDispatcher("newstudent_list.jsp").forward(request, response);
		return null;
	}
	
	
	
	public void setStudentService(StudentService studentService) {
		this.studentService = studentService;
	}
}