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软件工程结对作业01

时间:2017-04-07 13:42:17      阅读:187      评论:0      收藏:0      [点我收藏+]

标签:数据库的操作   tle   4.0   驱动   logs   resultset   实现   let   method   

设计思想:

程序中涉及了简单的mvc框架中的jsp+javabean结构,将整数和分数式子的类写到srcentity的包中,将一些关于数据库的操作写到sql包中;jsp有三个,第一个是选择界面(选择一些简单的参数,例如整数或者分数,出题数据范围,算式运算符个数,式子个数等等),将这些参数传到第二个jsp中,在第二个jsp得到用户输入的参数,并且生成相应的算式题目,在第三个jsp中判断对错,在jsp中调用包中的类,直接使用.java中的分数整数类,在一些数据库操作中也是直接调用封装好的sql包中函数,来实现连接数据库,插入数据等操作。

其中,对于算式的计算是用递归实现的,比如3个数计算,可以先算一步,变成2个数的算式,由此可以递归来实现算式的结果。

源程序代码:

entity包

Fenshu.java

 

package entity;

public class Fenshu {
    int a;
    int b;
    
    public static Fenshu jisuanjieguo(Fenshu a[],int b[],int n){
        Fenshu jie=new Fenshu();
        if(n==1){jie=jisuan(a[0],b[0],a[1]);}
        else {
            int ii=0;boolean z=false;
            for(int i=0;i<n;i++){
                if(b[i]==3||b[i]==4){
                    ii=i;
                    z=true;
                    break;
                }
            }
            if(z==true){
                a[ii]=jisuan(a[ii],b[ii],a[ii+1]);
                if(ii!=n-1){
                    for(int i=ii;i<n-1;i++){
                        b[i]=b[i+1];
                        a[i+1]=a[i+2];
                    }
                }
                jie=jisuanjieguo(a,b,n-1);
            }
            else {
                a[0]=jisuan(a[0],b[0],a[1]);
                for(int i=0;i<n-1;i++){
                    b[i]=b[i+1];
                    a[i+1]=a[i+2];
                }
                jie=jisuanjieguo(a,b,n-1);
            }
        }
        return jie;
    }
    public static Fenshu jisuan(Fenshu aaa,int bbb,Fenshu ccc){
        Fenshu d=new Fenshu();
        int a1=1,b1=1;
        if(bbb==1){
            b1=aaa.b*ccc.b;
            a1=aaa.a*ccc.b+aaa.b*ccc.a;
        }
        else if(bbb==2){
            b1=aaa.b*ccc.b;
            a1=aaa.a*ccc.b-aaa.b*ccc.a;
        }
        else if(bbb==3){
            b1=aaa.b*ccc.b;
            a1=aaa.a*ccc.a;
        }
        else {
            b1=aaa.b*ccc.a;
            a1=aaa.a*ccc.b;
        }
        d.set(a1,b1);
        d.yue();
        return d;
    }
    public void set(int aa,int bb){
        a=aa;
        b=bb;
    }
    public int zuidayin(){
        int c=0,d=1;
        if(a<b) c=a;
        else c=b;
        for(int i=1;i<=c;i++){
            if(a%i==0&&b%i==0){
                d=i;
            }
        }
        return d;
    }
    public void yue(){
        int y=this.zuidayin();
        if(y!=1){
            a=a/y;
            b=b/y;
        }
    }
    public String dai(){
        String p="";
        if(a>=b){
            int q=a/b;
            int w=a-b*q;
            return p+q+"‘"+w+"/"+b;
        }
        else {
            return p+a+"/"+b;
        }
    }
    public String fanhui(){
        String r="";
        r="("+a+"/"+b+")";
        return r;
    }
}

 

 

 

Fenshude.java

 

package entity;

public class Fenshude {
    Fenshu as[];
    int fu[];
    int fanwei;
    int shu;
    public void getshu(int n){
        shu=n;
        as=new Fenshu [n+1];
        fu=new int [n];
    }
    public void getfanwei(int a){
        fanwei=a;
    }
    public void shengcheng(int pp){
        for(int i=0;i<shu;i++){
            if(pp==1)
                fu[i]=(int)(Math.random()*4+1);
            else 
                fu[i]=(int)(Math.random()*2+1);
        }
        for(int i=0;i<shu+1;i++){
            int ii=0;
            as[i]=new Fenshu();
            while(ii==0){
                as[i].b=(int)(Math.random()*(fanwei-1)+1);
                as[i].a=(int)(Math.random()*(fanwei-1)+1);
                if(as[i].a<as[i].b){ii=1;}
            }
        }
    }
    public String zhuan(int a){
        if(a==1) return "+";
        else if(a==2) return "-";
        else if(a==3)return "*";
        else return "/";
    }
    public String show(){
        String uuu="";
        for(int i=0;i<shu;i++){
            uuu="("+as[i].a+"/"+as[i].b+") "+zhuan(fu[i]);
            System.out.print("("+as[i].a+"/"+as[i].b+") "+zhuan(fu[i])+" ");
        }
        uuu=uuu+"("+as[shu].a+"/"+as[shu].b+")";
        System.out.print("("+as[shu].a+"/"+as[shu].b+")");
        System.out.println(" =");
        return uuu;
    }

    public Fenshu jieguo(){
        Fenshu jieguo=new Fenshu();
        jieguo=Fenshu.jisuanjieguo(as,fu,shu);
        return jieguo;
    }
    public Fenshu showjieguo(){
        Fenshu ee=jieguo();
        System.out.println("   结果为:"+ee.a+"/"+ee.b);
        return ee;
    }
    public String showshizi(){
        String r="";
        for(int i=0;i<shu;i++){
            r=r+as[i].fanhui()+zhuan(fu[i]);
        }
        r=r+as[shu].fanhui();
        return r;
    }
    public String showdaan(){
        String r="";
        Fenshu ee=jieguo();
        r=r+ee.a+"/"+ee.b;
        if(ee.b==1)
            r=""+ee.a;
        return r;
    }
    
}

 

 

 

Panduan.java

 

package entity;

public class Panduan{
    
    public static int panduan1(String b)
    {
        if(b.equals("2"))
            return 2;
        else if(b.equals("3"))
            return 3;
        else if(b.equals("4"))
            return 4;
        else if(b.equals("5"))
            return 5;
        else
            return 0;
    }
    public static int panduan2(String b)
    {
        if(b.equals("10"))
            return 10;
        else if(b.equals("50"))
            return 50;
        else if(b.equals("100"))
            return 100;
        else 
            return 0;
    }
    public static void main(String[]arg)
    {
        String a="2";
        int m=panduan1(a);
        System.out.println(m);
        int n=panduan2("10");
        System.out.println(n);
    }

}

 

 

 

Suan.java

 

package entity;

public class Suan {
    int fanwei;
    int shu;
    int zheng[];
    int fu[];
    public void getshu(int n){
        shu=n;
        zheng=new int [n+1];
        fu=new int [n];
    }
    public void getfanwei(int a){
        fanwei=a;
    }
    public void shengcheng(int pp){
        for(int i=0;i<shu;i++){
            if(pp==1)
                fu[i]=(int)(Math.random()*4+1);
            else 
                fu[i]=(int)(Math.random()*2+1);
        }
        for(int i=0;i<shu+1;i++){
            zheng[i]=(int)(Math.random()*(fanwei-1)+1);
        }
        for(int i=0;i<shu;i++){
            int aa=1;
            while(aa==1){
                if(fu[i]==2){
                    if(zheng[i]>=zheng[i+1]){
                        aa=0;
                    }
                    else{
                        zheng[i]=(int)(Math.random()*(fanwei-1)+1);
                        zheng[i+1]=(int)(Math.random()*(fanwei-1)+1);
                    }
                }
                else if(fu[i]==4){
                    if(zheng[i]<zheng[i+1]){
                        aa=0;
                    }
                    else{
                        zheng[i]=(int)(Math.random()*(fanwei-1)+1);
                        zheng[i+1]=(int)(Math.random()*(fanwei-1)+1);
                    }
                }
                else{
                    aa=0;
                }
            }
        }
    }
    public String zhuan(int a){
        if(a==1) return "+";
        else if(a==2) return "-";
        else if(a==3)return "*";
        else return "/";
    }
    public String show(){
        String uuu="";
        for(int i=0;i<shu;i++){
            uuu=uuu+zheng[i]+zhuan(fu[i]);
            System.out.print(zheng[i]+" "+zhuan(fu[i])+" ");
        }
        uuu=uuu+zheng[shu];
        System.out.print(zheng[shu]);
        System.out.println(" =");
        return uuu;
    }

    public Fenshu jieguo(){
        Fenshu qq[]=new Fenshu[shu+1];
        for(int i=0;i<shu+1;i++){
            qq[i]=new Fenshu();
            qq[i].set(zheng[i],1);
        }
        Fenshu jieguo=new Fenshu();
        jieguo=Fenshu.jisuanjieguo(qq,fu,shu);
        return jieguo;
    }
    public Fenshu showjieguo(){
        Fenshu ee=jieguo();
        System.out.println("   结果为:"+ee.a+"/"+ee.b);
        return ee;
    }
    public String showdaan(){
        String r="";
        Fenshu ee=jieguo();
        r=r+ee.a+"/"+ee.b;
        if(ee.b==1)
            r=""+ee.a;
        return r;
    }
    public String showshizi(){
        String r="";
        for(int i=0;i<shu;i++){
            r=r+zheng[i]+zhuan(fu[i]);
        }
        r=r+zheng[shu];
        return r;
    }
    public String fanhui(){
        String aq="";
        for(int i=0;i<shu;i++){
            aq=aq+""+zheng[i]+zhuan(fu[i]);
        }
        aq=aq+zheng[shu];
        return aq;
    }
}

 

 

 

sql包

Sql.java

 

package sql;

import java.sql.*;

public class Sql {
    static Connection con=null;
    static Statement stmt=null;
    static PreparedStatement psmt=null;
    public static Statement get(){
        return stmt;
    }
    public static void lianjie(){
        try{
            Class.forName("com.mysql.jdbc.Driver");
            con=DriverManager.getConnection("jdbc:mysql://127.0.0.1/web_number","root","baohui");
            stmt=con.createStatement();
            System.out.print("数据库连接成功");
            //out.print("<p>");
        }
        catch(Exception e)
        {
            System.out.print(e);
        }
        
    }
    public static void insert (int a,String b,String c)throws Exception{
        
        try
        {
            String sql2="insert into web (number,shizi,jieguo) values (?,?,?)";
            psmt=con.prepareStatement(sql2);
            psmt.setInt(1,a);
            psmt.setString(2,b);
            psmt.setString(3,c);
            psmt.executeUpdate();
            //out.print("插入成功!");    
        }
        catch(Exception e)
        {
             //out.print(e);
        }
        
    }
    public static void delete()throws Exception{
        String sql1="delete from web";
        stmt.execute(sql1);
    }
    public static void guan()throws Exception{
        psmt.close();
        stmt.close();
        con.close();
    }
    public static void main(String arg[]){
        lianjie();
    }
    
}

 

 

 

jsp

index.jsp

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@page import="entity.*"%>
<%@page import="sql.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>出题</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>
    <form id=form1 method="post" action="judge.jsp" >
    <% 
    request.setCharacterEncoding("utf-8");
      String operator=request.getParameter("operator");
      String operator1=request.getParameter("operator1");
      String number1=request.getParameter("number1");
      String number2=request.getParameter("number2");
  
    int a=Panduan.panduan1(number1);
      int b=Panduan.panduan2(number2);
      
      int c=2;
      if(operator.equals("是"))
      {
          c=1;
      }
      
      if(operator1.equals("整数"))
      {
          Suan xx[]=new Suan[10];
        int wei=b;
        int shu=a;
        
        String pp="";
        String pp1="";
        Sql.lianjie();
        Sql.delete();
        for(int i=0;i<10;i++){
            xx[i]=new Suan();
            xx[i].getfanwei(wei);
            xx[i].getshu(shu);
            xx[i].shengcheng(c);
            pp=xx[i].show();
            pp1=xx[i].showjieguo().dai();
            out.print(xx[i].showshizi()+"=  ");
            //out.print(xx[i].showdaan());
            out.print("<input type=text id=text1 name=name"+i+">");
            out.print("<p>");
            Sql.insert(i+1,xx[i].showshizi(),xx[i].showdaan());
        }
        Sql.guan();
      }
      
      else
      {
          request.setCharacterEncoding("utf-8");
          Fenshude xx[]=new Fenshude[10];
        int wei=b;
        int shu=a;
        
        String pp="";
        String pp1="";
        Sql.lianjie();
        Sql.delete();
        for(int i=0;i<10;i++){
            xx[i]=new Fenshude();
            xx[i].getfanwei(wei);
            xx[i].getshu(shu);
            xx[i].shengcheng(c);
            //pp=xx[i].show();
            //pp1=xx[i].showjieguo().dai();
            out.print(xx[i].showshizi()+"=  ");
            //out.print(xx[i].showdaan());
            out.print("<input type=text id=text1 name=name"+i+">");
            out.print("<p>");
            Sql.insert(i+1,xx[i].showshizi(),xx[i].showdaan());
        }
        Sql.guan();
      
      }
      //out.print(a+"<p>");
      //out.print(b+"<p>");
      
    %>
   <input type=submit name=submit value=提交 >
   </form>
  </body>
</html>

 

 

 

judge.jsp

 

<%@ page language="java" import="java.util.*" import ="java.sql.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@page import="entity.*"%>
<%@page import="sql.*"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>判断答案</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>
    <%
    request.setCharacterEncoding("utf-8");
        Statement stmt=null;
        Connection con=null;
        try{
            Class.forName("com.mysql.jdbc.Driver");
            con=DriverManager.getConnection("jdbc:mysql://127.0.0.1/web_number","root","baohui");
            stmt=con.createStatement();
            //out.print("数据库连接成功");
            //out.print("<p>");
        }
        catch(Exception e)
        {
            out.print(e);
        }
    
    //Sql.lianjie();
    String sql="select * from web";
    ResultSet rs=stmt.executeQuery(sql);
        for(int i=0;i<10;i++)
        {
            //sql语句执行
            int number=0;
            String shizi=null;
            String jieguo=null;
            if(rs.next())
            {
                number=rs.getInt("number");
                shizi=rs.getString("shizi");
                jieguo=rs.getString("jieguo");
            }
            
            //进行比较,判断对错
            out.print(shizi+"=    ");
            String  name=request.getParameter("name"+i);
            out.print(name);
            String name1=jieguo;
            
            if(name.equals(name1))
            {
                out.print("        ");
                out.print("<font color=greeen face=楷体>正确</font>");
            }
            else
            {
                out.print("        ");
                out.print("<font color=red face=楷体>错误</font>");
            }
            out.print("<p>");
        }
        stmt.close();
        con.close();
     %>
  </body>
</html>

 

 

 

select.jsp

 

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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>选择参数</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>
    <form id=form2 method=post action="index.jsp">
    <table align=center border=0>
    <tr>
        <td>是否需要乘除:<td>
        <td>是 <input type=radio name=operator value="是" checked><input type=radio name=operator value="否"></td>
    </tr>
    <tr>
        <td>选择整数还是分数:<td>
        <td>整数<input type=radio name=operator1 value="整数" checked>
               分数<input type=radio name=operator1 value="分数"></td>
    </tr>
    <tr>
        <td>运算符的个数:<td>
        <td><select name=number1 size=1>
                <option>2</option>
                <option>3</option>
                <option>4</option>
                <option>5</option>
            </select>
        </td>
    </tr>
    <tr>
        <td>请选择运算范围:<td>
        <td>
            <select name=number2 size=1>
                <option>10</option>
                <option>50</option>
                <option>100</option>
            </select>
        </td>
    </tr>
    <tr>
    <td><input type=submit name=submit value=下一步 ></td>
    </tr>
    </table>
    </form>  
    </body>
</html>

 

 

 

运行结果截图:

技术分享技术分享技术分享技术分享技术分享技术分享技术分享技术分享

总结体会:

首先,由于题目要求比较多,所以在编程之前的设计思路是非常重要的,将需要封装的封装为类,相应的一些功能函数应当写成函数以便后面可以灵活的调用;计算结果的过程利用的是递归的方法,此处是把握了每次计算的规律,找到相似的地方,在递归函数的实现上,起初总是没结果,后来发现没有传递回来值,所以递归中返回值也是很重要的;在数据库的连接时,需要注意jdbc.jar文件的配置,否则数据库会驱动失败(比较容易遗漏);在jsp中使用循环结构生成式子的时候,因为要留出答题的文本框,所以在循环需要注意每输出一个式子,相应的输出一个文本框,这里主要答题方便,使界面更具有美观性,操作性;在jsp传递参数过程中涉及到类型转换,需要注意;用javabean来封装类使得思路比较清晰,结构框架清楚,把java代码实现的语句大部分写到.java文件中,而在.jsp文件中主要写传参以及界面的设计,使得思路更具有逻辑性。

psp表

软件工程结对作业01

标签:数据库的操作   tle   4.0   驱动   logs   resultset   实现   let   method   

原文地址:http://www.cnblogs.com/zhaoziming/p/6677574.html

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