设计思想：
利用随机数生成题目，输入想要完成的数量，定义数组将题目和答案存到数组里，在jsp界面设置出题数量和时间，输入答案提交表单或时间到了自动提交表单，将输入的答案和存在数组里的答案进行对比。
源代码：
package 四则运算; import java.*; import java.util.Random; public class YunSuan { static private int num1; static private int num2; static private int num3; static private int fh1; static private int fh2; static private int t; static private int f; static private int w; static private int answer[]; static private String title[]; public int getNum1() { return num1; } public void setNum1(int num1) { this.num1 = num1; } public int getNum2() { return num2; } public void setNum2(int num2) { this.num2 = num2; } public int getNum3() { return num3; } public void setNum3(int num3) { this.num3 = num3; } public int getFh1() { return fh1; } public void setFh1(int fh1) { this.fh1 = fh1; } public int getFh2() { return fh2; } public void setFh2(int fh2) { this.fh2 = fh2; } public int getT() { return t; } public void setT(){ t++; } public int getF() { return f; } public void setF() { f++; } public int getW() { return w; } public void setW() { w++; } public String[] getTitle() { return title; } public void setTitle(String[] title) { this.title = title; } public int[] getAnswer() { return answer; } public void setAnswer(int answer[]) { this.answer = answer; } public void fuzhi(int n) { Random rd=new Random(); String title[] = new String[n]; int answer[]=new int[n]; for(int i=0;i<n;i++) { setNum1(rd.nextInt(100)+1); setNum2(rd.nextInt(100)+1); setNum3(rd.nextInt(100)+1); setFh1(rd.nextInt(4)); setFh2(rd.nextInt(4)); if(getFh1()<2&&getFh2()<2) { if(getFh1()==0&&getFh2()==0) { int daan=getNum1()+getNum2()+getNum3(); if(daan<=100) { answer[i]=daan; title[i]=getNum1()+"+"+getNum2()+"+"+getNum3(); } else { i--; } } else if(getFh1()==0&&getFh2()==1) { int daan=getNum1()+getNum2()-getNum3(); if(daan>=0&&daan<=100) { answer[i]=daan; title[i]=getNum1()+"+"+getNum2()+"-"+getNum3(); } else { i--; } } else if(getFh1()==1&&getFh2()==0) { int daan=getNum1()-getNum2()+getNum3(); if(daan>=0&&daan<=100) { answer[i]=daan; title[i]=getNum1()+"-"+getNum2()+"+"+getNum3(); } else { i--; } } else if(getFh1()==1&&getFh2()==1) { int daan=getNum1()-getNum2()-getNum3(); if(daan>=0&&daan<=100) { answer[i]=daan; title[i]=getNum1()+"-"+getNum2()+"-"+getNum3(); } else { i--; } } } else { if(getFh1()==0) { int daan=getNum1()+getNum2(); if(daan<=100) { answer[i]=daan; title[i]=getNum1()+"+"+getNum2(); } else { i--; } } else if(getFh1()==1) { int daan=getNum1()-getNum2(); if(daan>=0) { answer[i]=daan; title[i]=getNum1()+"-"+getNum2(); } else { i--; } } else if(getFh1()==2) { setNum1(rd.nextInt(10)+1); setNum2(rd.nextInt(10)+1); answer[i]=getNum1()*getNum2(); title[i]=getNum1()+"*"+getNum2(); } else if(getFh1()==3) { if(getNum1()%getNum2()==0) { answer[i]=getNum1()/getNum2(); title[i]=getNum1()+"/"+getNum2(); } else { i--; } } } setAnswer(answer); setTitle(title); } } public static void main(String[] args) { YunSuan ys=new YunSuan(); ys.fuzhi(1000); } }
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>四则运算</title> </head> <body style="background-image:url('../image/back.jpg');"> <form action="page.jsp" method="get"> <center style="color:red ; font-family:华文行楷;font-size:35px">四则运算</center> <% String nn=(String)request.getAttribute("error"); if(nn==null) { request.setAttribute("error", " "); } %> <br> <br> <h1 style="margin-left:360px;font-family:楷体;font-size:15px"> 出题数量 <input type="text" name="number" /><%=request.getAttribute("error")%></h1> <br> <h1 style="margin-left:360px;font-family:楷体;font-size:15px"> 答题时间(秒) <input type="text" name="time" /><%=request.getAttribute("error")%></h1> <br> <center><input type="submit" value="确定" /></center> </form> </body> </html>
<%@page import="四则运算.YunSuan"%> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>四则运算</title> </head> <body style="background-image:url('../image/back.jpg');"> <form action="page2.jsp" method="get"> <center style="color:red ; font-family:华文行楷;font-size:35px">四则运算</center> <br> <br> <% String num=request.getParameter("number"); String time=request.getParameter("time"); if(num == null || "".equals(num.trim())||time == null || "".equals(time.trim())){ request.setAttribute("error", "这一行不能为空"); %> <jsp:forward page="choose.jsp"></jsp:forward> <% } int number=Integer.parseInt(num); int time2=Integer.parseInt(time); YunSuan ys=new YunSuan(); ys.fuzhi(number); %> <center>时间已经过去：<span id=id2>0</span>秒；<%=time2 %>秒后系统自动提交。</center>> <script language="javascript"> var i=0; function showtime(){ i=i+1; id2.innerHTML=i; setTimeout("showtime()",1000); if(i==<%=time2%>) document.forms[0].submit(); } showtime(); </script> <br> <br> <% for(int i=0;i<number;i++) { %> <h1 style="margin-left:360px;font-family:楷体;font-size:15px"> <%=ys.getTitle()[i]%> <input type="text" name=<%=i %>/></h1> <br> <% } %> <center><input type="submit" value="提交" /></center> <br> </form> </body> </html>
<%@page import="java.util.*"%> <%@page import="四则运算.YunSuan"%> <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <title>四则运算</title> </head> <body style="background-image:url('../image/back.jpg');"> <center style="color:red ; font-family:华文行楷;font-size:35px">四则运算</center> <br> <br> <% YunSuan ys=new YunSuan(); int i=0; Enumeration pNames=request.getParameterNames(); while(pNames.hasMoreElements()){ String name=(String)pNames.nextElement(); String value=request.getParameter(name); if(value == null || "".equals(value)) { request.setAttribute("error", "未做"); ys.setW(); %> <h1 style="margin-left:360px;font-family:楷体;font-size:15px"> <%=ys.getTitle()[i]%> <input type="text" name=<%=i %> value=<%=request.getAttribute("error")%>>× 正确答案为：<%=ys.getAnswer()[i] %></h1> <br> <% } else { int answer=Integer.parseInt(value); if(ys.getAnswer()[i]==answer) { ys.setT(); %> <h1 style="margin-left:360px;font-family:楷体;font-size:15px"> <%=ys.getTitle()[i]%> <input type="text" name=<%=i %> value=<%=answer %>>√</h1> <br> <% } else { ys.setT(); %> <h1 style="margin-left:360px;font-family:楷体;font-size:15px"> <%=ys.getTitle()[i]%> <input type="text" name=<%=i %> value=<%=answer %>>× 正确答案为：<%=ys.getAnswer()[i] %></h1> <br> <% } } i++; } %> <br> <h1 style="margin-left:360px;font-family:楷体;font-size:20px;color:red"> 共答对<%=ys.getT() %>题</h1> <h1 style="margin-left:360px;font-family:楷体;font-size:20px;color:red"> 共答错<%=ys.getF() %>题</h1> <h1 style="margin-left:360px;font-family:楷体;font-size:20px;color:red"> 未答<%=ys.getW() %>题</h1> </body> </html>
截图：
psp
| PSP2.1 | Personal Software Process Stages | Time(h) |
| Planning | 计划 | |
| Estimate | 估计这个任务需要多少时间 | 5 |
| Development | 开发 | |
| · Analysis | · 需求分析 (包括学习新技术) | 0.5 |
| · Design Spec | · 生成设计文档 | 0.5 |
| · Design Review | · 设计复审 (和同事审核设计文档) | 0.5 |
| ·Coding Standard | · 代码规范 (为目前的开发制定合适的规范) | 0.5 |
| · Design | · 具体设计 | 1 |
| · Coding | · 具体编码 | 2 |
| · Code Review | · 代码复审 | 0.5 |
| · Test | 测试（自我测试，修改代码，提交修改） | 1 |
| Reporting | 报告 | |
| · Test Report | · 测试报告 | 1 |
| · Size Measurement | · 计算工作量 | 0.5 |
| · Postmortem & Process Improvement Plan | · 事后总结, 并提出过程改进计划 | 0.5 |
|
合计 |
8.5 |