软件工程概论-合作作业02-四则运算网页答题

Posted 2020-09-09 遗风遗风丶

　题目：四则运算web版；把程序变成一个网页程序，用户通过设定参数，就可以得到各种题目，并可实现在线答题并评判　　

　　四则运算web版的程序设计思想：之前的程序是可以用户自定义生成任意个数四则运算题目的，这次试验是要求写成web版的，用于给用户提供一一个在线答题的平台。这里需要用到Javaweb的方法，Javabean方法，jsp代码编写等方法。

　　源程序代码：

javabean1:

package DBBean;

import java.sql.*;
import java.util.*;
public class DBbean {
    private String driverStr = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
    private String connStr = "jdbc:sqlserver://localhost:1433; DatabaseName=sizeyunsuan";
    private String dbusername = "sa";
    private String dbpassword = "123456";
    private Connection conn = null;
    private PreparedStatement pstmt = null;

    public DBbean()
    {
        try
        {
            Class.forName(driverStr);
            conn = DriverManager.getConnection(connStr, dbusername, dbpassword);
        } 
        catch (Exception ex) {
            System.out.println("数据库连接失败！");
        } 
        
    }
    public Vector<String> getEx(){
        Vector<String> ex=new Vector<String>();
        try{
            Random ran=new Random();
            String sql="select * from expression";
            pstmt=conn.prepareStatement(sql);
            ResultSet res=pstmt.executeQuery();
            while(true){
                if(ex.size()>=20)
                    break;
                if(res.next()){
                    String exp=res.getString("ex");
                    String re=res.getString("result");
                    ex.addElement(exp);
                    ex.addElement(re);
                }
            }
            
        }
        catch(Exception e){
            e.printStackTrace();
        }
        return ex;
    }
    public void insertEx(String ex[]){
        if(ex.length!=5){
            System.out.println("插入表达式失败!");
            return ;
        }
        else{
            String exp=""+ex[0]+ex[1]+ex[2]+ex[3];
            String resu=ex[4];
            try{
                String sql = "insert into expression values(\'"+exp+"\',\'" +resu+ "\')";
                pstmt=conn.prepareStatement(sql);
                int rst=pstmt.executeUpdate();
                if(rst!=0){
                    System.out.print("成功插入表达式：");
                    System.out.print(exp+resu);
                    System.out.print("\\n");
                    return ;
                }
                else{
                    System.out.println("插入表达式失败!");
                    return ;
                }
                    
            }
            catch(Exception e){
                System.out.println("插入表达式失败！");
            }

        }
    }
    public void clear(){
        try{
            String sql="delete expression";
            pstmt=conn.prepareStatement(sql);
            int rst=pstmt.executeUpdate();
            if(rst!=0){
                System.out.println("成功清空数据表");
            }            
        }
        catch(Exception e){
            System.out.println("delete语句执行失败！");
        }
    }
}

javabean2:

package DBEx;


import java.util.*;
public class DBEx{
    public int from,to,ifChengChu;
    public int randomArr[]=new int[4];
    public Random ran=new Random();
    public char randomCh[]={\'+\',\'-\',\'*\',\'÷\'};
    //生成表达式
    public String[] creaExpression(int f,int t,int choose,int ifChengChu){
        from=f; to=t;
        String ex[]=new String[5];
        char operator;
        if(ifChengChu==1){
            int oper=ran.nextInt(4);
            operator=randomCh[oper];
        }
        else{
            int oper=ran.nextInt(2);
            operator=randomCh[oper];
        }

        if(choose==1){
            for(int i=0;i<2;i++){
                randomArr[i]=randomNum(from,to);
            }
            if(operator==\'-\'||operator==\'÷\'){
                int ra=0,rb=0;
                while(true){
                    ra=randomNum(from,to);
                    rb=randomNum(from,to);
                    if(ra>=rb&&ra%rb==0)
                        break;
                }
                randomArr[0]=ra;
                randomArr[1]=rb;
            }

            ex[0]=""+randomArr[0];
            ex[1]=""+operator;
            ex[2]=""+randomArr[1];
            ex[3]="=";
            int result=calcuInt(ex[0],ex[1],ex[2]);
            String s=""+result;
            ex[4]=s;
            return ex;

        }
        else
            return null;
        

    }
    //范围生成随机数
    public int randomNum(int fromA,int toB){
        int x=ran.nextInt(toB-fromA)+fromA+1;
        return x;
    }
    public int calcuInt(String numleft,String oper,String numright){
        int a=Integer.parseInt(numleft);
        int b=Integer.parseInt(numright);
        if(oper.equals("+"))
            return a+b;
        else if(oper.equals("-"))
            return a-b;
        else if(oper.equals("*"))
            return a*b;
        else if(oper.equals("÷"))
            return a/b;
        else 
            return -1;
    }
}

set.jsp:

<%@ page import="java.sql.*,java.util.*" language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<html>
<head>
<title>在线答题</title>
</head>
<body>
    <center>
        <h1 style="color:red">答题设置</h1>
            <form action="settodb.jsp">
                <table border="0">
                    <tr>
                        <td>数字范围：</td>
                        <td>小<input type="text" name="from" id="f"></td><br>
                        <td>大<input type="text" name="to" id="t"></td><br>
                    </tr>
                    <tr>
                        <td>是否有乘除法：</td>
                        <td><input type="radio" name="ifChengChu" value="1" checked>是</td>
                        <td><input type="radio" name="ifChengChu" value="2">否</td>
                    </tr>
                </table>
            <br>
                
                <input type="button" value="确定" style="color:#BC8F8F" onclick="check()">
            </form>

    </center>
<script type="text/javascript">
    var text=document.getElementById("f");
    text.onkeyup=function(){
        this.value=this.value.replace(/\\D/g,\'\');
    }
</script>
<script type="text/javascript">
    var text=document.getElementById("t");
    text.onkeyup=function(){
        this.value=this.value.replace(/\\D/g,\'\');
    }
</script>
<script language="javascript">
function check(){
    var f=document.forms[0].from.value;
    var t=document.forms[0].to.value;
    if(f==""||t==""){
        alert("请输入范围！");  
    }
    else{
        if((f>0&&f<=1000) && (t>0&&t<=1000)){
            if(f>=t){
                alert("“小”中的 数应小于“大”中的数！"); 
            }
            else
                document.forms[0].submit();
        }
        else{
            alert("请输入1-1000的正整数！");
        }
        
    }
}
</script>
</body>
</html>

settodb.jsp:

<%@ page import="java.sql.*,java.util.*" language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<html>
<head>
<script language="javascript">
</script>
</head>

<body>
<jsp:useBean id="dbex" class="DBEx.DBEx"/>
<jsp:useBean id="db" class="DBBean.DBbean"/>
<%
    db.clear();
    int from=Integer.parseInt(request.getParameter("from"));
    int to=Integer.parseInt(request.getParameter("to"));
    String ifChengChu=(String)request.getParameter("ifChengChu");
    int ifcc=0;
    if(ifChengChu.equals("1")){
        ifcc=1;
    }
    if(ifChengChu.equals("2")){
        ifcc=2;
    }
    out.println(from+" "+to+" "+ifcc);
    String ex[];
    for(int i=0;i<10;i++){
        ex=new String[5];
        ex=dbex.creaExpression(from,to,1,ifcc);
        db.insertEx(ex);

    }
    response.setHeader("refresh", "1;url=answer.jsp");
%>

</body>
</html>

answer1.jsp:

<%@ page import="java.sql.*,java.util.*" language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<html>
<head>
<title>在线答题</title>

<script language="javascript">
    function result(){
        var va=new Array(document.forms[0].value1.value,
                         document.forms[0].value2.value,
                         document.forms[0].value3.value,
                         document.forms[0].value4.value,
                         document.forms[0].value5.value,
                         document.forms[0].value6.value,
                         document.forms[0].value7.value,
                         document.forms[0].value8.value,
                         document.forms[0].value9.value,
                         document.forms[0].value10.value);
        var right=0;
        for(var i=0;i<10;i++){
            if(va[i]==null||va[i]==""){
                window.alert("还有题目没做完！");
                return;
            }
        }
        for(var i=0;i<10;i++){
            if(va[i]==res[i]){
                right++;
            }
        }
        result="您做对了"+right+"道题目";
        if(right<=6){
            result+="，不太理想，继续加油！"
            window.alert(result);
            location=location;
        }    
        if(right>6&&right<=9){
            result+="，不错呦，继续努力！";
            window.alert(result);
            location=location;
        }
        if(right==10){
            result+="，太棒啦，全对！(づ￣ 3￣)づ"
            window.alert(result);
            location=location;
        }
        
    }
</script>
</head>
<body>
<jsp:useBean id="db" class="DBBean.DBbean"/>
<style type="text/css">
.biaoti {
    font-family: "方正兰亭超细黑简体";
    font-size: 30px;
    color: #93F;
}
</style>
<form action="">
<%
    Vector<String> v=new Vector<String>();
    v=db.getEx();
%>
<center>
<span class="biaoti">四则运算答题界面</span>
<br>
<%=v.get(0) %><input type="text" name="value1" id="input"> <br><br>
<%=v.get(2) %><input type="text" name="value2" id="input2"> <br><br>
<%=v.get(4) %><input type="text" name="value3" id="input3"> <br><br>
<%=v.get(6) %><input type="text" name="value4" id="input4"> <br><br>
<%=v.get(8) %><input type="text" name="value5" id="input5"> <br><br>
<%=v.get(10)%><input type="text" name="value6" id="input6"> <br><br>
<%=v.get(12)%><input type="text" name="value7" id="input7"> <br><br>
<%=v.get(14)%><input type="text" name="value8" id="input8"> <br><br>
<%=v.get(16)%><input type="text" name="value9" id="input9"> <br><br>
<%=v.get(18)%><input type="text" name="value10" id="input10"><br><br>
<input type="Button" value="确认" onClick="result()">
</center>
<script>
    var res=new Array("<%=v.get(1)%>", "<%=v.get(3)%>", "<%=v.get(5)%>", "<%=v.get(7)%>", "<%=v.get(9)%>",
                      "<%=v.get(11)%>","<%=v.get(13)%>","<%=v.get(15)%>","<%=v.get(17)%>","<%=v.get(19)%>");
</script>
</form>
<script type="text/javascript">
var text = document.getElementById("input");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input2");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input3");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input4");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input5");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input6");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input7");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input8");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input9");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
<script type="text/javascript">
var text = document.getElementById("input10");
text.onkeyup = function(){
this.value=this.value.replace(/\\D/g,\'\');
}
</script>
</body>
</html>

answer2.jsp:

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134

<%@ page import="java.sql.*,java.util.*" language="java" contentType="text/html; charset=utf-8"     pageEncoding="utf-8"%> <html> <head> <title>在线答题</title> <script language="javascript">     function result(){         var va=new Array(document.forms[0].value1.value,                          document.forms[0].value2.value,                          document.forms[0].value3.value,                          document.forms[0].value4.value,                          document.forms[0].value5.value,                          document.forms[0].value6.value,                          document.forms[0].value7.value,                          document.forms[0].value8.value,                          document.forms[0].value9.value,                          document.forms[0].value10.value);         var right=0;         for(var i=0;i<10;i++){             if(va[i]==null||va[i]==""){                 window.alert("还有题目没做完！");                 return;             }         }         for(var i=0;i<10;i++){             if(va[i]==res[i]){                 right++;             }         }         result="您做对了"+right+"道题目";         if(right<=6){             result+="，不太理想，继续加油！"             window.alert(result);             location=location;         }           if(right>6&&right<=9){             result+="，不错呦，继续努力！";             window.alert(result);             location=location;         }         if(right==10){             result+="，太棒啦，全对！(づ￣ 3￣)づ"             window.alert(result);             location=location;         }               } </script> </head> <body> <jsp:useBean id="db" class="DBBean.DBbean"/> <form action=""> <%     Vector<String> v=new Vector<String>();     v=db.getEx(); %> <%=v.get(0) %><input type="text" name="value1" id="input"> <br><br> <%=v.get(2) %><input type="text" name="value2" id="input2"> <br><br> <%=v.get(4) %><input type="text" name="value3" id="input3"> <br><br> <%=v.get(6) %><input type="text" name="value4" id="input4"> <br><br> <%=v.get(8) %><input type="text" name="value5" id="input5"> <br><br> <%=v.get(10)%><input type="text" name="value6" id="input6"> <br><br> <%=v.get(12)%><input type="text" name="value7" id="input7"> <br><br> <%=v.get(14)%><input type="text" name="value8" id="input8"> <br><br> <%=v.get(16)%><input type="text" name="value9" id="input9"> <br><br> <%=v.get(18)%><input type="text" name="value10" id="input10"><br><br> <script>     var res=new Array("<%=v.get(1)%>", "<%=v.get(3)%>", "<%=v.get(5)%>", "<%=v.get(7)%>", "<%=v.get(9)%>",                       "<%=v.get(11)%>","<%=v.get(13)%>","<%=v.get(15)%>","<%=v.get(17)%>","<%=v.get(19)%>"); </script> <input type="Button" value="确认" onClick="result()"> </form> <script type="text/javascript"> var text = document.getElementById("input"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input2"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input3"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input4"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input5"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input6"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input7"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input8"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input9"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> <script type="text/javascript"> var text = document.getElementById("input10"); text.onkeyup = function(){ this.value=this.value.replace(/\\D/g,\'\'); } </script> </body> </html>

运行结果截图：