editvoteservlet.java

用jsp编写的网上投票系统

package votebean;

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;

public class EditVoteServlet extends HttpServlet {

	/**
	 * Constructor of the object.
	 */
	public EditVoteServlet() {
		super();
	}

	/**
	 * Destruction of the servlet. <br>
	 */
	public void destroy() {
		super.destroy(); // Just puts "destroy" string in log
		// Put your code here
	}
	public void doGet(HttpServletRequest request, HttpServletResponse response)
	throws ServletException, IOException {

		response.setContentType("text/html;charset=GBK");
		response.setHeader("Pragma", "No-cache");
		response.setHeader("Cache-Control", "no-cache");
		response.setDateHeader("Expires", 0);
		String id=request.getParameter("id");
		VoteMgr mgr=new VoteMgr();
		Questions question=mgr.getVote(Integer.parseInt(id));
		request.setAttribute("question", question);
		try{
			request.getRequestDispatcher("/admin/editVote.jsp").forward(request, response);
		}catch(Throwable t){
			getServletContext().log(t.getMessage());
		}
	}

	/**
	 * The doPost method of the servlet. <br>
	 *
	 * This method is called when a form has its tag value method equals to post.
	 * 
	 * @param request the request send by the client to the server
	 * @param response the response send by the server to the client
	 * @throws ServletException if an error occurred
	 * @throws IOException if an error occurred
	 */
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String id=request.getParameter("id");
		String startTime=request.getParameter("startyear")+"-"+
			request.getParameter("startmonth")+"-"+request.getParameter("startday");
		String endTime=request.getParameter("endyear")+"-"+
			request.getParameter("endmonth")+"-"+request.getParameter("endday");
		String active=request.getParameter("active");
		VoteMgr mgr=new VoteMgr();
		PrintWriter out = response.getWriter();
		//out.println(Integer.parseInt(id)+""+startTime+""+endTime+""+Integer.parseInt(active));
		mgr.updateVote(Integer.parseInt(id), startTime, endTime, Integer.parseInt(active));
		response.sendRedirect("/vote/admin/index.jsp");
	}

	/**
	 * Initialization of the servlet. <br>
	 *
	 * @throws ServletException if an error occurs
	 */
	public void init() throws ServletException {
		// Put your code here
	}

}