软件工程结对作业02（借鉴版）
在编写程序的时候因为不会将Java程序嵌入进jsp中所以借鉴了一个学姐的程序，下面是学姐的程序。但在对学姐程序就行修改时发现了一些问题：
在Newjsp中能调用html中的题目个数的参数
在Myjsp中不能调用html中的题目个数的参数
其中这个参数timugeshu，是我自己后来添加的，用来改变题目个数的，与Java程序无关，只在jsp文件中作用
源程序：
NewFeil.html
<!DOCTYPE html>
<html>
<head>
<title>四则运算</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta name="keywords" content="keyword1,keyword2,keyword3">
<meta name="description" content="this is my page">
<!--<link rel="stylesheet" type="text/css" href="./styles.css">-->
</head>
<body background="images/A1.jpg">
<div style="width: 100%; font-family: 微软雅黑; text-align: center">
<marquee scrollamount=3 style="COLOR=000000 FILTER: shadow(color=000000 );
FONT-FAMILY: 隶书; FONT-SIZE: 25pt; WIDTH: 100%">
欢迎来到四则运算乐园</marquee></div>
<span id="localtime"></span>
<script type="text/javascript">
function showLocale(objD) {
var str, colorhead, colorfoot;
var yy = objD.getYear();
if (yy < 1900)
yy = yy + 1900;
var MM = objD.getMonth() + 1;
if (MM < 10)
MM = ‘0‘ + MM;
var dd = objD.getDate();
if (dd < 10)
dd = ‘0‘ + dd;
var hh = objD.getHours();
if (hh < 10)
hh = ‘0‘ + hh;
var mm = objD.getMinutes();
if (mm < 10)
mm = ‘0‘ + mm;
var ss = objD.getSeconds();
if (ss < 10)
ss = ‘0‘ + ss;
var ww = objD.getDay();
if (ww == 0)
colorhead = "<font color=\"#000000\">";
if (ww > 0 && ww < 6)
colorhead = "<font color=\"#000000\">";
if (ww == 6)
colorhead = "<font color=\"#000000\">";
if (ww == 0)
ww = "星期日";
if (ww == 1)
ww = "星期一";
if (ww == 2)
ww = "星期二";
if (ww == 3)
ww = "星期三";
if (ww == 4)
ww = "星期四";
if (ww == 5)
ww = "星期五";
if (ww == 6)
ww = "星期六";
colorfoot = "</font>"
str = colorhead + yy + "-" + MM + "-" + dd + " " + hh + ":" + mm
+ ":" + ss + " " + ww + colorfoot;
return (str);
}
function tick() {
var today;
today = new Date();
document.getElementById("localtime").innerHTML = showLocale(today);
window.setTimeout("tick()", 1000);
}
tick();
</script>
<br />
<h1 align="center">题目选择</h1>
<!-- 传递参数的值给NewFile.jsp处理 -->
<form action="NewFile.jsp" method="post">
<!-- 互斥选择，值只能有一个 -->
<center>
<br>请选择上限(分数无上下限):
<select name="TopNumber">
<option value=20>20</option>
<option value=30>30</option>
<option value=50>50</option>
<option value=80>80</option>
<option value=100>100</option>
</select><br>
<br>请选择下限(分数无上下限):
<select name="BaseNumber">
<option value=0>0</option>
<option value=1>1</option>
<option value=3>3</option>
<option value=5>5</option>
<option value=10>10</option>
<br>
</select><br>
<br>请输入题目个数：<input type="text" name="timugeshu"><br><br>
<br>请在以下选项中打勾:
<br>
<tr>请选择需要的题型是否有乘除法：
<input type="radio" name="xuanze" value=1>有
<input type="radio" name="xuanze" value=2>无
</tr>
<br>
<tr>请选择需要的题型是否有余数：
<input type="radio" name="xuanze1" value=3>有
<input type="radio" name="xuanze1" value=4>无
</tr>
<br>
<tr>请选择需要的题型是否有括号：
<input type="radio" name="xuanze2" value=5>有
<input type="radio" name="xuanze2" value=6>无</tr>
<br>
<br>
<input type="submit" name="submit" value="提交">
</center>
</form>
</body>
</html>
NewFeil.jsp
<%@ page language="java" contentType="text/html; charset=utf-8"
pageEncoding="utf-8"%>
<%@ page import="szys.*"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>四则运算</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body background="images/A2.jpg">
<%
int timugeshu=Integer.parseInt((String)request.getParameter("timugeshu"));
String[] s=new String[timugeshu];
float k[]=new float[timugeshu];
math a=new math();
request.setCharacterEncoding("UTF-8");
String xuanze = request.getParameter("xuanze");
String xuanze1 = request.getParameter("xuanze1");
String xuanze2 = request.getParameter("xuanze2");
String TopNumber,BaseNumber;
TopNumber=request.getParameter("TopNumber");
BaseNumber=request.getParameter("BaseNumber");
a.SetValue(a.StrToNum(TopNumber),a.StrToNum(BaseNumber));
if(xuanze!=null&&xuanze1!=null&&xuanze2!=null){
if(xuanze.equals("1"))
{
a.SetValue1(1);
}
if(xuanze1.equals("3"))
{
a.SetValue2(1);
}
if(xuanze2.equals("5"))
{
a.SetValue3(1);
}
}
%>
<form action="Myjsp.jsp" method="post">
<center>
<%
a.main(timugeshu);
float temp;
String[] se=new String[timugeshu];
for(int i=0;i<timugeshu;i++){
s[i]=a.cs(i);
se[i]="name";
se[i]=se[i]+i;
k[i]=a.css(i);
out.print("<tr>"+s[i]+"</tr>");
out.println("<br>");
%>
<input type="text" name=<%=se[i] %>><br>
<%
}
session.setAttribute( "v1",s);
session.setAttribute( "v2",k);
%>
<br><input type="submit" name="submit" value="提交">
<% %>
</center>
</form>
</body>
</html>
MyFeil.jsp
<%@ page language="java" import="java.util.*" pageEncoding="gb2312" contentType="text/html; charset=gb2312"%>
<%@ page import="szys.*"%>
<%String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<base href="<%=basePath%>">
<title>答题情况</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body background="images/A3.jpg">
<% request.setCharacterEncoding("UTF-8");%>
<center>
<%
int timugeshu=Integer.parseInt((String)request.getParameter("timugeshu"));
String[] name=new String[timugeshu];
String[] sum=new String[timugeshu];
math a=new math();
float sum1[]=new float[timugeshu];
int right=0;
String[] s= (String[])session.getAttribute("v1");
float[] k=(float[])session.getAttribute("v2");
for(int i=0;i<timugeshu;i++)
sum1[i]=0;
for(int i=0;i<timugeshu;i++){
name[i]="name";
name[i]=name[i]+i;
sum[i]=request.getParameter(name[i]);
out.print(s[i]);
out.print("<tr>"+sum[i]+"</tr>");
if(sum[i]=="")
out.print("未回答！");
else{
if(((int)(k[i]*100))%100!=0)
sum1[i]=a.StrToFloat1(sum[i]);
else
sum1[i]=a.StrToFloat(sum[i]);
if(Math.abs(sum1[i]*100-k[i]*100)<4){
out.print(" 回答正确！");
right++;
}
else
out.print(" 回答错误，正确答案是： "+k[i]);
}
out.println("<br>");
}
out.print("总共做对 "+right+" 题，正确率为："+(right/timugeshu)*100+" %");
%><br>
<input type="button" value="返回首页" onClick="window.location.href=‘MyHtml.html‘">
<input type="button" value="关闭" onClick="window.close();">
</center>
</body>
</html>
Math.java
package math;
import java.util.*;
public class math{
static int MAX=100;
static String formula = ""; //当前算式
static String[] buffer = new String[MAX]; //缓冲区数组
static int TopNumber; //上限
static int BaseNumber; //下限
static int chengchu; //是否有乘除
static int Amount; //操作数的个数
static int BracketNum; //括号个数
static int[] LBraket = new int[2]; //左括号的位置
static int[] RBraket = new int[2]; //右括号的位置
static int IsNeg; //是否有负数
static int IsRem; //是否有余数
static int IsBra; //是否有括号
static int IsRep; //是否重复
static float[] Result= new float[MAX]; //正确结果数组
static char lastOp; //记录上个运算符是否为除号
//优先级数组
static char[][] prior = {
{ ‘>‘, ‘>‘, ‘<‘, ‘<‘, ‘<‘, ‘>‘, ‘>‘ },
{ ‘>‘, ‘>‘, ‘<‘, ‘<‘, ‘<‘, ‘>‘, ‘>‘ },
{ ‘>‘, ‘>‘, ‘>‘, ‘>‘, ‘<‘, ‘>‘, ‘>‘ },
{ ‘>‘, ‘>‘, ‘>‘, ‘>‘, ‘<‘, ‘>‘, ‘>‘ },
{ ‘<‘, ‘<‘, ‘<‘, ‘<‘, ‘<‘, ‘=‘, ‘ ‘ },
{ ‘>‘, ‘>‘, ‘>‘, ‘>‘, ‘ ‘, ‘>‘, ‘>‘ },
{ ‘<‘, ‘<‘, ‘<‘, ‘<‘, ‘<‘, ‘ ‘, ‘=‘ }
};
//将操作符转化为优先级数组的下标
static int Change(String Oper)
{
switch (Oper.charAt(0))
{
case ‘+‘: return 0;
case ‘-‘: return 1;
case ‘*‘: return 2;
case ‘/‘: return 3;
case ‘(‘: return 4;
case ‘)‘: return 5;
case ‘=‘: return 6;
default: return 6;
}
}
static int Change(char Oper)
{
switch (Oper)
{
case ‘+‘: return 0;
case ‘-‘: return 1;
case ‘*‘: return 2;
case ‘/‘: return 3;
case ‘(‘: return 4;
case ‘)‘: return 5;
case ‘=‘: return 6;
default: return 6;
}
}
static //返回优先级的大小
char Precede(char Oper, char ch)
{
return prior[Change(Oper)][Change(ch)];
}
//计算两个数的结果
static float Operate(float first, char oper1, float second)
{
switch (oper1)
{
case ‘+‘:
{
return (first + second);
}
case ‘-‘:
{
if (first-second<0)
{
IsRep = 1;
return 0;
}
return (first - second);
}
case ‘*‘:
{
return (first * second);
}
case ‘/‘:
{
if (second == 0)
{
IsRep = 1;
return 0;
}
return (first / second);
}
default: return 0;
}
}
//数字的个数
static void NumberAmount()
{
Amount = 2 + (int)((Math.random())*3);
}
//加左括号 随机选择在第几个数字前面加括号
static void AddLbracket(){
for (int j = 0; j < 2; j++)
LBraket[j] = 0;
if (Amount == 2)
{
BracketNum = 0;
}
if (Amount == 3){
BracketNum = (int)((Math.random())*2);
}
if (Amount > 3)
{
BracketNum = (int)((Math.random())*3);
}
for (int i = 0; i < BracketNum; i++){
LBraket[i] = 1 + (int)((Math.random())*(Amount - 2));
}
}
//加右括号
static void AddRbracket(){
for (int j = 0; j < 2; j++)
RBraket[j] = 0;
int choose;
int trance;
if (BracketNum == 1){
RBraket[0] = LBraket[0] + 1 +(int)((Math.random())* (Amount - LBraket[0]));
}
if (BracketNum == 2)
{
//把最左边的左括号放在第一个数组中
if (LBraket[0] < LBraket[1])
{
trance = LBraket[0];
LBraket[0] = LBraket[1];
LBraket[1] = trance;
}
//当两个左括号之间相差有点远时有2中右括号添加方法
if (LBraket[0] - LBraket[1]>2){
choose = (int)((Math.random())*2);
if (choose == 0){
RBraket[0] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0]));
RBraket[1] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0]));
}
if (choose == 1)
{
RBraket[0] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0]));
RBraket[1] = LBraket[1] + 1 + (int)((Math.random())*(LBraket[0] - 2));
}
}
else
{
RBraket[0] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0]));
RBraket[1] = LBraket[0] + 1 + (int)((Math.random())*(Amount - LBraket[0]));
if (LBraket[0] == LBraket[1] && RBraket[0] == RBraket[1]){
LBraket[0] = LBraket[1] = 0;
RBraket[0] = RBraket[1] = 0;
BracketNum = 0;
}
if (LBraket[1] == 1 && (RBraket[0] == Amount || RBraket[1] == Amount))
{
LBraket[0] = LBraket[1] = 0;
RBraket[0] = RBraket[1] = 0;
BracketNum = 0;
}
}
}
}
//随机产生最简真分数
static void Score(){
int Left, Right;
Left = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1));
Right = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1));
while (Left >= Right || Left == 0)
{
Left = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1));
Right = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1));
}
int max = 1;
//求最大公约数
for (int i = 2; i <= Left; i++)
{
if (Left%i == 0 && Right%i == 0)
{
max = i;
}
}
if (max > 1)
{
Left /= max;
Right /= max;
}
formula += "(" + Left + "/" + Right + ")";
}
//随机生成操作符
static void Operater()
{
int choose;
char op=‘+‘;
if (chengchu== 1)
choose = 1 + (int)((Math.random())* 4);
else
choose = 1 + (int)((Math.random())*2);
switch (choose)
{
case 1:{op = ‘+‘; lastOp = ‘+‘; break; }
case 2:{op = ‘-‘; lastOp = ‘-‘; break; }
case 3:{op = ‘*‘; lastOp = ‘*‘; break; }
case 4:
{
//防止连续除法产生运算误区
op = ‘/‘;
if (lastOp == ‘/‘)
IsRep = 1;
else
lastOp = ‘/‘;
break;
}
}
formula += op;
}
//随机生成整数
static void Integer(){
int num;
num = BaseNumber + (int)((Math.random())*(TopNumber - BaseNumber + 1));
formula += num;
}
//创建算式
static void CreateNumber(){
for (int k = 1; k <= Amount; k++)
{
for (int i = 0; i < 2; i++){
if (LBraket[i] == k)
formula += "(";
}
int cho;
cho = (int)((Math.random())*2);
if (cho == 0)
{
Integer();
}
else
Score();
for (int j = 0; j < 2; j++){
if ((RBraket[j] == k) && RBraket[j] != 0)
formula += ")";
}
if (k == Amount)
formula += "=";
else
Operater();
}
}
//检查是否重复及判断括号是否添加正确
static int Repeat(int time){
buffer[time] = formula;
int juege = 0;
int trance;
for (int i = 0; i < time; i++)
{
if (buffer[i] == buffer[time])
{
juege = 1;
break;
}
}
if (IsBra != 1)
{
if (BracketNum == 1)
{
if (LBraket[0] == 1 && RBraket[0] == Amount)
juege = 1;
}
if (BracketNum == 2)
{
if (RBraket[0] < RBraket[1])
{
trance = RBraket[0];
RBraket[0] = RBraket[1];
RBraket[1] = trance;
}
if (LBraket[1] == 1 && RBraket[0] == Amount&&LBraket[0] < RBraket[1])
juege = 1;
}
}
return juege;
}
static float EvaluateExpression(){
float[] OPND=new float[MAX];
char[] OPTR =new char[MAX];
int Ntop=0;
int Ctop=0;
OPTR[Ctop++]=‘=‘;
int count = 0;
float Num = 0, first, second;
char oper1;
char bracket1;
while (true)
{
Num = 0;
//读取数字
while (formula.charAt(count) >= ‘0‘&&formula.charAt(count) <= ‘9‘)
{
if (formula.charAt(count) == ‘0‘)
{
if (count == 0)
OPND[Ntop++]=0;
if (count != 0 && !(formula.charAt(count-1) >= ‘0‘&&formula.charAt(count-1) <= ‘9‘))
OPND[Ntop++]=0;
}
Num = Num * 10;
Num = Num + formula.charAt(count) - 48;
count++;
}
if (Num > 0)
{
OPND[Ntop++]=Num;
}
if (formula.charAt(count) == ‘=‘&&OPTR[Ctop-1] == ‘=‘)
{
break;
}
//判断运算符优先级
switch (Precede(OPTR[Ctop-1], formula.charAt(count)))
{
case ‘<‘:
{
OPTR[Ctop++]=formula.charAt(count);
count++;
break;
}
case ‘>‘:
{
oper1=OPTR[--Ctop];
second=OPND[--Ntop];
first=OPND[--Ntop];
OPND[Ntop++]=Operate(first, oper1, second);
break;
}
case ‘=‘:
{
bracket1=OPTR[--Ctop];
count++;
}
}
}
return OPND[Ntop-1];
}
public static void SetValue(int IsMulDlvExist1,int IsRem1,int IsBra1,int TopNumber1,int BaseNumber1)
{
chengchu=0;
BaseNumber=0;
TopNumber=10;
IsNeg=0;
IsRem=0;
IsBra=1;
chengchu=IsMulDlvExist1;
TopNumber=TopNumber1;
BaseNumber=BaseNumber1;
IsRem=IsRem1;
IsBra=IsBra1;
}
public static void SetValue1(int IMDE)
{
chengchu=IMDE;
}
public static void SetValue2(int Rem)
{
IsRem=Rem;
}
public static void SetValue3(int Bra)
{
IsBra=Bra;
}
public static void SetValue(int TopNumber1,int BaseNumber1){
chengchu=0;
BaseNumber=0;
TopNumber=10;
IsNeg=0;
IsRem=0;
IsBra=1;
TopNumber=TopNumber1;
BaseNumber=BaseNumber1;
}
public static int StrToNum(String x)
{
int num=0;
for(int i=0;i<x.length();i++)
{
num=num*10+x.charAt(i)-48;
}
return num;
}
public static float StrToFloat(String x)
{
float num=0;
int doat=0;
int mi=-1;
for(int i=0;i<x.length();i++)
{
if(x.charAt(i)==‘.‘)
{
doat=1;
continue;
}
if(doat==1)
{
num=(float) (num+(x.charAt(i)-48)*Math.pow(10,mi));
mi--;
}else{
num=num*10+x.charAt(i)-48;
}
}
return num;
}
public static float StrToFloat1(String x)
{
float first=0;
float second=0;
int point=0;
for(int i=0;i<x.length();i++)
{
if(x.charAt(i)==‘/‘)
{
point=1;
continue;
}
if(point==1)
{
second=second*10+x.charAt(i)-48;
}else
{
first=first*10+x.charAt(i)-48;
}
}
return (first/second);
}
static int ma()
{
int OutChoose = 0;
int truenum = 0;
int choose;
boolean flag = true;
int range = 0;
for (int i = 0; i < 30; i++)
{
lastOp = ‘+‘;
IsRep = 0;
NumberAmount();
if (IsBra == 0)
{
AddLbracket();
AddRbracket();
}
CreateNumber();
Result[i] = EvaluateExpression();
while (Repeat(i) == 1 || IsRep == 1 || (IsNeg == 1 && (Result[i] < 0 || Result[i] == -0)) || (IsRem == 1 && ((int)(Result[i]*10000))%10000!=0))
{
IsRep = 0;
lastOp = ‘+‘;
formula="";
NumberAmount();
if (IsBra == 0)
{
AddLbracket();
AddRbracket();
}
CreateNumber();
Result[i] = EvaluateExpression();
}
buffer[i]=formula;
formula="";
}
return 0;
}
public static float css(int number){
return Result[number];
}
public static String cs(int number){
return buffer[number];
}
public static void main()
{
int a;
a=ma();
for (int i = 0; i < 30; i++)
{
System.out.println(buffer[i]+Result[i]);
}
}
}
时间： 2024-10-22 04:11:07