📄 tuipiao.java
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JOptionPane.showMessageDialog(null,"请输入退票数",
"错误信息",JOptionPane.ERROR_MESSAGE);
return;
}
//tuipiaoshu over the tickets
if (cTuiPiaoShu != 0 && cTuiPiaoShu > Integer.parseInt(childNum))
{
JOptionPane.showMessageDialog(null,"退票数大于已定票数,请按\"查询\"按钮查看信息",
"错误信息",JOptionPane.ERROR_MESSAGE);
return;
}
if (aTuiPiaoShu != 0 && aTuiPiaoShu > Integer.parseInt(adultNum))
{
JOptionPane.showMessageDialog(null,"退票数大于已定票数,请按\"查询\"按钮查看信息",
"错误信息",JOptionPane.ERROR_MESSAGE);
return;
}
operationForTuiPiao(cTuiPiaoShu,aTuiPiaoShu);
}
}
//********************************************************************
//operation after returning
private void operationForTuiPiao(int childTuiPiaoShu,int adultTuiPiaoShu)
{
int newChildNum = Integer.parseInt(childNum) - childTuiPiaoShu;
int newAdultNum = Integer.parseInt(adultNum) - adultTuiPiaoShu;
float tuiPiaoCost = caculateTuiPiaoCost(childTuiPiaoShu,adultTuiPiaoShu);
float newCost = Float.parseFloat(cost) - tuiPiaoCost;
try
{
RandomAccessFile raf = new RandomAccessFile(file,"rw");
raf.seek(this.locationOfRecord);
//input the message after modified
raf.writeUTF(dingdanNum);
raf.writeUTF(name);
raf.writeUTF(idNum);
raf.writeUTF(flight1);
raf.writeUTF(flight2);
raf.writeUTF(ticketType);
raf.writeUTF(leaveTime1);
raf.writeUTF(leaveTime2);
raf.writeUTF(String.valueOf(newChildNum));
raf.writeUTF(String.valueOf(newAdultNum));
raf.writeUTF(String.valueOf(newCost));
int totalTuiPiaoShu = childTuiPiaoShu + adultTuiPiaoShu;
int sign=returnTime();
seatInfo.tuiPiao(flight1,leaveTime1,totalTuiPiaoShu);
//when there's the other flight
if (flight2.length() != 0)
seatInfo.tuiPiao(flight2,leaveTime2,totalTuiPiaoShu);
if (newChildNum == 0 && newAdultNum == 0)
JOptionPane.showMessageDialog(null,"恭喜你退票成功!"+"\n"+"该订单号已作废!"+"\n"+"你将获得"+tuiPiaoCost +
"的退票钱"+"\n"+"欢迎你再次选择我们!",
"退票成功",JOptionPane.INFORMATION_MESSAGE);
else
if(sign!=0)
JOptionPane.showMessageDialog(null,"恭喜你退票成功!"+"\n"+"你现在剩余"+newChildNum+
"张儿童票和"+newAdultNum+"张成人票"+"\n"+"你将获得"+tuiPiaoCost +
"的退票钱"+"\n"+"欢迎你再次选择我们!","退票成功",JOptionPane.INFORMATION_MESSAGE);
//clean the textField
rewrite();
}
catch(Exception e)
{
e.printStackTrace();
}
}
//********************************************************************
//caculate the returning money
private float caculateTuiPiaoCost(int childTuiPiaoShu,int adultTuiPiaoShu)
{
float tuiPiaoCost = 0;
int sign=0;
try
{
//get message about the flight
String sqlString = "select childFare,adultFare from flight where flight='"+flight1+"'";
ResultSet rs = sqlBean.executeQuery(sqlString);
float childFare1 = 0;
float adultFare1 = 0;
while(rs.next())
{
childFare1 = rs.getFloat(1);
adultFare1 = rs.getFloat(2);
}
float childFare2 = 0;
float adultFare2 = 0;
if (flight2.length() != 0)
{
String sqlString2 = "select childFare,adultFare from flight where flight='"+flight2+"'";
ResultSet rs2 = sqlBean.executeQuery(sqlString2);
while(rs2.next())
{
childFare1 = rs2.getFloat(1);
adultFare2 = rs2.getFloat(2);
}
}
sign=returnTime();
if (flight2.length() == 0){
if(sign==0)
JOptionPane.showMessageDialog(null,"抱歉，您现在不能退票!","错误信息",JOptionPane.ERROR_MESSAGE);
if(sign==1)
tuiPiaoCost = (childFare1*childTuiPiaoShu + adultFare1*adultTuiPiaoShu) * (float)0.65;
if(sign==2)
tuiPiaoCost = (childFare1*childTuiPiaoShu + adultFare1*adultTuiPiaoShu) * (float)0.7;
}
else
{
if(sign==0)
JOptionPane.showMessageDialog(null,"抱歉，退票时间已过，您现在不能退票!","错误信息",JOptionPane.ERROR_MESSAGE);
if(sign==1)
tuiPiaoCost = ( (childFare1 + childFare2)*childTuiPiaoShu +
(adultFare1 + adultFare2)*adultTuiPiaoShu ) * (float)0.65;
if(sign==2)
tuiPiaoCost = ( (childFare1 + childFare2)*childTuiPiaoShu +
(adultFare1 + adultFare2)*adultTuiPiaoShu ) * (float)0.7;
}
}
catch(Exception e)
{
e.printStackTrace();
}
return tuiPiaoCost;
}
//********************************************************************
public String getCurrentTime(){
//Get the instance for the class Calendar which used to get the present time
Calendar cal = Calendar.getInstance();
//Because there are two Date classes(java.util.Date--java.sql.Date)
//So we should designate the full name for the java.util.Date class
cal.setTime(new java.util.Date());
//Get the present year,month,day
String year = String.valueOf(cal.get(Calendar.YEAR));
String month = String.valueOf(cal.get(Calendar.MONTH) + 1);
String day = String.valueOf(cal.get(Calendar.DAY_OF_MONTH));
String hour = String.valueOf(cal.get(Calendar.HOUR_OF_DAY));
//String minute = String.valueOf(cal.get(Calendar.MINUTE));
//String second = String.valueOf(cal.get(Calendar.SECOND));
return year.concat(month.concat(day.concat(hour)));
}
//determine wether can return ticket right now
public int returnTime(){
int y=Integer.parseInt(year);
int m=Integer.parseInt(month);
int d=Integer.parseInt(day);
int h=Integer.parseInt(hour);
String st=getCurrentTime();
int cy=Integer.parseInt(st.substring(0,4));
int cm=Integer.parseInt(st.substring(4,6));
int cd=Integer.parseInt(st.substring(6,8));
int ch=Integer.parseInt(st.substring(8,10));
//compare flight time and current time
if(y-cy==1)
cm=m-1;
else if(y!=cy)
return 0;
if(m-cm==1){
switch(m){
case 1:
case 3:
case 5:
case 7:
case 8:
case 10:
case 12: cd=cd-31; break;
case 2: {
if(isLeapYear(cy)) cd=cd-29;
else cd=cd-28;
break;
}
case 4:
case 6:
case 9:
case 11: cd=cd-30; break;
}
}
else if(m!=cm) return 0;
//if the flight is leave the day after tomorrow day,the return can't perform
if(d==cd){
if(h-ch<2) return 0;
else return 1;
}
else
{
if(d-cd<5&&d-cd>0) return 1;
else if(d-cd>5) return 2;
else return 0;
}
}
//wether the year is leap year
public boolean isLeapYear(int year){
if(year%4==0&&year%100!=0&&year%400==0)
return true;
else return false;
}
//********************************************************************
//get the clients' information
private boolean getClientInfo(String dingdan,String id)
{
RandomAccessFile raf = null;
try
{
raf = new RandomAccessFile(file,"rw");
boolean isDingDanExist = false;
boolean isIDRight = false;
long tempLocation = 0;
raf.seek(0);
//find message in file
try{
//if can't continue reading,throw exception
while (raf.getFilePointer() < raf.length())
{
//record current position
tempLocation = raf.getFilePointer();
dingdanNum = raf.readUTF();
name = raf.readUTF();
idNum = raf.readUTF();
flight1 = raf.readUTF();
flight2 = raf.readUTF();
ticketType = raf.readUTF();
leaveTime1 = raf.readUTF();
leaveTime2 = raf.readUTF();
childNum = raf.readUTF();
adultNum = raf.readUTF();
cost = raf.readUTF();
if (dingdanNum.equals(dingdan))
{
isDingDanExist = true;
if (idNum.equals(id))
{
isIDRight = true;
this.locationOfRecord = tempLocation;
break;
}
else
{
isIDRight = false;
break;
}
}
}
}
catch(Exception e){
}
//display the fist leave time and the second time
if (isDingDanExist == true && isIDRight == true)
{
String year2="";
String month2="";
String day2="";
String hour2="";
if (leaveTime1.length() != 0)
{
year = leaveTime1.substring(0,4);
month = leaveTime1.substring(4,6);
day = leaveTime1.substring(6,8);
hour=leaveTime1.substring(8,10);
leaveTime1 = year.concat("-").concat(month).concat("-").concat(day);
}
if (leaveTime2.length() != 0)
{
year2 = leaveTime2.substring(0,4);
month2 = leaveTime2.substring(4,6);
day2 = leaveTime2.substring(6,8);
hour2 =leaveTime1.substring(8,10);
leaveTime2 = year2.concat("-").concat(month2).concat("-").concat(day2);
}
if (Integer.parseInt(childNum) == 0 && Integer.parseInt(adultNum) == 0)
{
JOptionPane.showMessageDialog(null,"该订单号已经无效!",
"错误信息",JOptionPane.ERROR_MESSAGE);
return false;
}
return true;
}
if (isDingDanExist == true && isIDRight == false)
{
JOptionPane.showMessageDialog(null,"身份证号不正确","错误信息",JOptionPane.ERROR_MESSAGE);
return false;
}
if (isDingDanExist == false)
{
JOptionPane.showMessageDialog(null,"订单号不存在","错误信息",JOptionPane.ERROR_MESSAGE);
return false;
}
}
catch(Exception e)
{
e.printStackTrace();
}
finally
{
try
{
//close the file
raf.close();
}
catch(Exception e)
{
e.printStackTrace();
}
}
return false;
}
//********************************************************************
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