addvisitor.java

利用java编写的一个学生宿舍管理系统

/**
 * AddVisitor.java
 * author:liuhaijing
 * @version 1.0
 */
 
 package mydesign;//包名

import java.io.*;
import mydesign.*;
import java.util.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class AddVisitor extends HttpServlet
{
  
    //Initialize global variables
    public void init() throws ServletException 
    {
    }
    
    //Process the HTTP Post request
    public void doPost(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException 
    {
        request.setCharacterEncoding("gb2312");
        response.setContentType("text/html; charset=gb2312");
        PrintWriter out = response.getWriter();
        
        VisitorControl visitorcontrol=new VisitorControl();
        HouseControl housecontrol=new HouseControl();
        
        String donghao=request.getParameter("donghao");
        String houseid=request.getParameter("houseid");
        String visitednm=request.getParameter("visitednm");
        String visitornm=request.getParameter("visitornm");
        String guanxi=request.getParameter("guanxi");
        String zhengjian=request.getParameter("zhengjian");
        String zjnm=request.getParameter("zjnm");
        String visittime=request.getParameter("visittime");;
        String inturn=request.getParameter("inturn");
        
        Visitor visitor=new Visitor();
        visitor.setDonghao(donghao);
        visitor.setHouseid(houseid);
        visitor.setVisitednm(visitednm);
        visitor.setVisitornm(visitornm);
        visitor.setGuanxi(guanxi);
        visitor.setZhengjian(zhengjian);
        visitor.setZjnm(zjnm);
        visitor.setVisittime(visittime);
        visitor.setInturn(inturn);
		
		//处理数据
        try
        {
        	if(housecontrol.isExistHouse(donghao,houseid))
        	{
        		if(visitorcontrol.isExistStudent(visitor)!=null)
        		{
        			visitor.setStudentid(visitorcontrol.isExistStudent(visitor));
        	    	visitorcontrol.addVisitor(visitor);
        	    	out.print("<script>alert('成功登记来访！');window.location.href='visitor.jsp'</script>");
        	    	visitorcontrol.close();
        		}
        		else out.print("<script>alert('该房间没有要找的学生！');history.back()</script>");
        	}
        	else out.print("<script>alert('该房间不存在！');history.back()</script>");
        }
        catch(Exception e)
        {
            System.out.print("AddVisitorServlet error:"+e.getMessage());            
        }
        finally
        {  
        }
    }
    
    //Clean up resources
    public void destroy()
    {
    }
}