register.java

这个是jsp编写的考试系统代码

package kaoshi.student.action;

import javax.servlet.*;
import javax.servlet.http.*;
import org.apache.struts.action.*;
import kaoshi.bean.*;

public class Register extends Action {
	
    public ActionForward execute(ActionMapping mapping, ActionForm form,
            HttpServletRequest request, HttpServletResponse response)
            throws Exception
    {
        String sid = request.getParameter("sid");
        String nm = request.getParameter("nm");
        String ip = request.getRemoteAddr();               
        HttpSession session = request.getSession();
        ServletContext application = session.getServletContext();
		ExamHall kaochang = (ExamHall)application.getAttribute("kaochang");
		if (kaochang == null) {
			kaochang = new ExamHall();
			application.setAttribute("kaochang", kaochang);
		}
		String next = null;
		if ((sid!=null)&&(!sid.trim().equals(""))) {
			if (kaochang.register(sid, nm, ip)) {
				next = "success";
			} else {
				next = "failure";
				request.setAttribute("errorMessage", "考号冲突!");
			}
		} else {
			next = "failure";
			request.setAttribute("errorMessage", "考号不能为空!");
		}
        
        return mapping.findForward(next);
    }
    
}