thshowquestionaction.java

在线考试功能

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


import java.util.List;

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.QuestionType;
import com.onlinestudy.domain.Questions;
import com.onlinestudy.service.QuestionService;

/** 
 * MyEclipse Struts
 * Creation date: 04-04-2009
 * 
 * XDoclet definition:
 * @struts.action parameter="status" validate="true"
 */
public class ThshowQuestionAction extends DispatchAction {
	QuestionService questionService;
	
	//显示题型	
	public ActionForward showQType(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
	
		List list = questionService.showQuestionType();
		
		
		request.setAttribute("list", list);
		
		request.getRequestDispatcher("question_type_list.jsp").forward(request, response);
		return null;
	}

	//显示题目列表
	public ActionForward showQuestion(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception{
		int currentPage = 1;
		int length = 10;
		currentPage = Integer.parseInt(request.getParameter("nextpage"));
		int totalQuestions = questionService.CountQuestion();
		int totalPages = (totalQuestions-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 = questionService.selectQuestionForpage("from Questions", offset, length);
		
		request.setAttribute("list", list);
		
		request.setAttribute("totalQuestions", totalQuestions);
		request.setAttribute("totalPages", totalPages);
		request.setAttribute("currentPage", currentPage);
		request.getRequestDispatcher("question_list.jsp").forward(request, response);
		return null;
	}
	
	//显示录入题目页面	
	public ActionForward showAddQuestion(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {	
		List list = questionService.showQuestionType();	
		request.setAttribute("list", list);
		
		request.getRequestDispatcher("question_add.jsp").forward(request, response);
		return null;
	}
	
	//显示修改题目页面	
	public ActionForward showupdateQuestion(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response) throws Exception {
		int id = Integer.parseInt(request.getParameter("id"));
		Questions qt = questionService.selectQuestionById(id);
		
		
		
		List list = questionService.showQuestionType();	
		request.setAttribute("list", list);
		request.setAttribute("qt", qt);
		request.getRequestDispatcher("question_update.jsp").forward(request, response);
		return null;
	}

	public void setQuestionService(QuestionService questionService) {
		this.questionService = questionService;
	}


}