addstudenthouse.java

利用java编写的一个学生宿舍管理系统

/**
 * AddStudentHouse.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 AddStudentHouse 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();
        
        Student student=new Student();
        House house=new House();
		StudentControl studentcontrol=new StudentControl();
		HouseControl housecontrol=new HouseControl();
		ExpenseControl expensecontrol=new ExpenseControl();
                
        String studentid=request.getParameter("studentid");
        String donghao=request.getParameter("donghao");
        String houseid=request.getParameter("houseid");
        String intime=request.getParameter("intime");     
      
		//处理数据
        try
        {
        	if(studentcontrol.isExistStudent(studentid))
        	{
        		if(!studentcontrol.isExistStudentHouse(studentid))
        		{
        			if(housecontrol.isExistHouse(donghao,houseid))
        			{
        				house=housecontrol.getHouseInfo(donghao,houseid);
        				student=studentcontrol.getStudentInfo(1,studentid);
        				if(house.getSex().equals(student.getSex()))
        				{
        					if(house.getKezhu()>house.getRuzhu())
        					{
        						student.setStudentid(studentid);
        						student.setDonghao(donghao);
        						student.setHouseid(houseid);
        						student.setIntime(java.sql.Date.valueOf(intime));
        						studentcontrol.addStudentHouse(student);
        						if(house.getRuzhu()==0) expensecontrol.setExpense(student);
        						housecontrol.addStudent(donghao,houseid);
        						expensecontrol.close();
        						studentcontrol.close();
        						housecontrol.close();
        						out.print("<script>alert('成功登记入住！');window.location.href='student_in.jsp'</script>");
        					}else  out.print("<script>alert('此房间已满员！');history.back()</script>");
        				}else  out.print("<script>alert('性别不符！');history.back()</script>");
        			}
					else out.print("<script>alert('该房间不存在！'); history.back();</script>");
        		}
        		else out.print("<script>if(confirm('该学生已经入住,是否为其调换房间？')) window.location.href='exchange.jsp';else history.back();</script>");
        	}
        	else out.print("<script>if(confirm('没有该学生的资料，是否现在输入该学生的资料')) window.location.href='addstudent.jsp';else history.back();</script>");
        }
        catch(Exception e)
        {
            System.out.print("AddStudentHouse Servlet error:"+e.getMessage());            
        }
        finally
        {
        }
    }
    
    //Clean up resources
    public void destroy()
    {
    }
}