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10.18（随机出题Web页面）

时间：2023-10-18 21:58:58浏览次数：40  
标签：Web java write 10.18 num 出题 println import document

今天完成了javaweb的出题系统，比较简陋

jsp
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<!DOCTYPE html>
<html>
<head>

    <meta charset="UTF-8">

    <title>添加信息</title>
    <script>
        var result0=new Array(6);
        var result=new Array(6);
        var t=new Array(6);
        var num=0;
        function refreshPage() {
            location.reload();
        }
        function operator(){
            var m=Math.floor(Math.random()*4);
            switch(m){
                case 0:
                    return " + ";break;
                case 1:
                    return " - ";break;
                case 2:
                    return " * ";break;
                case 3:
                    return " / ";break;
                default:
                    return " + ";break;
            }
        }
        function makeTimu() {
            num++;
            var a = Math.floor(Math.random() * (100 - 1) + 1);
            var b = Math.floor(Math.random() * (100 - 1) + 1);
            var c = Math.floor(Math.random() * (100 - 1) + 1);
            var d = Math.floor(Math.random() * (100 - 1) + 1);
            var n = Math.floor(Math.random() * 3 + 2);
            var q;
            var p;
            var x;

            switch (n) {
                case 2:
                    document.write(a);
                    q=operator();document.write(q);
                    document.write(b);
                    t[num]=a+q+b;
                    toString(t[num]);
                    result[num]= eval(t[num]);
                    break;
                default:
                case 3:
                    document.write(a);
                    q=operator();document.write(q);
                    document.write(b);
                    p=operator();document.write(p);
                    document.write(c);
                    t[num]=a+q+b+p+c;
                    toString(t[num]);
                    result[num]=eval(t[num]);
                    break;
                case 4:
                    document.write(a);
                    q=operator();document.write(q);
                    document.write(b);
                    p=operator();document.write(p);
                    document.write(c);
                    x=operator();document.write(x);
                    document.write(d);
                    t[num]=a+q+b+p+c+x+d;
                    toString(t[num]);
                    result[num]=eval(t[num]);

                    break;
            }
            console.log(t[num]);
            console.log(result[num]);
        }
        function charge(result){
            for(var i=1;i<=5;i++){
                if(result!=result[i]){

                }
            }
        }
        function showWrong(){
            result0[1] = document.getElementById("result1");
            result0[2] = document.getElementById("result2");
            result0[3] = document.getElementById("result3");
            result0[4] = document.getElementById("result4");
            result0[5] = document.getElementById("result5");
            for(let i=1;i<=5;i++){
                if(result0[i]!=result[i]){
                   document.write(t[i]);
                    document.write("=");
                    document.write(result[i]+"<br>");
                }

            }
        }

        function submitButtonClick() {
            result0[1] = document.getElementById("result1");
            result0[2] = document.getElementById("result2");
            result0[3] = document.getElementById("result3");
            result0[4] = document.getElementById("result4");
            result0[5] = document.getElementById("result5");
            // function creatProblemObject(expr,res)  {
            //     return {
            //         expression: expr,
            //         result: res
            //     }
            // }
            // let problemList = [];
            // for (let i = 1; i <= 5; i++)    {
            //     problemList.push(creatProblemObject(t[i],result[i]));
            // }
            let xmlHttp = new XMLHttpRequest();
            xmlHttp.open("POST","addInfo",false);
            xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");

             for (let i = 1; i <= 5; i++ ) {
                 t[i] = t[i].replace("+","十");
             }
            xmlHttp.send("expression1="+t[1] + "&expression2="+t[2] + "&expression3="+t[3] + "&expression4="+t[4] + "&expression5="+t[5] +
                "&result1="+result[1] + "&result2="+result[2] + "&result3="+result[3] + "&result4=" + result[4]+ "&result5="+result[5]);
            //xmlHttp.send("problemSetJson=" + JSON.stringify(problemList));





            for (let i = 1; i <= 5; i++ ) {
                t[i] = t[i].replace("+","十");
            }
            for(let i=1;i<=5;i++){
                if(result0[i]!=result[i]){
                    let xmlHttp1 = new XMLHttpRequest();
                    xmlHttp1.open("POST","addInfoW",false);
                    xmlHttp1.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
                    xmlHttp1.send("expression="+t[i]+"&result="+result[i]);
                }

            }


            alert("提交成功");
        }
        function timer(){
            let timerContent = document.getElementById("timer");
            let timeleft = 120;
            let timr = setInterval(function (){
                timerContent.innerText = timeleft;
                timeleft--;
                if(timeleft<0){
                    clearInterval(timr);
                    alert("时间到");
                }
            },1000);
        }
    </script>
</head>
<body>
<script>

    document.write(1+'、');
    makeTimu();

</script>
    <label for="result1">=</label>
    <input type="text" id="result1" name="result1" required>
    <br>
<script>
    document.write(2+'、');
    makeTimu();

</script>
    <label for="result2">=</label>
    <input type="text" id="result2" name="result2" required>
    <br>
<script>
    document.write(3+'、');
    makeTimu();

</script>
    <label for="result3">=</label>
    <input type="text" id="result3" name="result3" required>
    <br>
<script>
    document.write(4+'、');
    makeTimu();
</script>
    <label for="result4">=</label>
    <input type="text" id="result4" name="result4" required>
    <br>
<script>
    document.write(5+'、');
    makeTimu();
</script>
    <label for="result5">=</label>
    <input type="text" id="result5" name="result5" required>
    <br>
剩余时间:<p id="timer"></p>
    <button onclick="submitButtonClick()">提交</button>
<button onclick="refreshPage()">刷新</button>
<button onclick="timer()">开始答题</button>
<button onclick="showWrong()">查看错题</button>
</body>
</html>



addWrongServl
package com.example.demo;

import com.google.gson.Gson;

import java.io.IOException;
import java.lang.reflect.Type;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/addInfoW")
public class AddWrongServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        Connection connection = null;

        try {
            String driver = "com.mysql.cj.jdbc.Driver";
            String url = "jdbc:mysql://localhost:3306/class";
            String user = "root";
            String password = "123567";

            Class.forName(driver);
            connection = DriverManager.getConnection(url, user, password);

            if (connection != null) {
                System.out.println("数据库连接成功！");
            } else {
                System.out.println("数据库连接失败！");
            }


//            Gson gson = new Gson();
//            String problemSetJson = request.getParameter("problemSetJson");
//            System.out.println(problemSetJson);
//            List<Map<String,String>> problemSet = new ArrayList<>();
//            problemSet = gson.fromJson(problemSetJson, ((ArrayList<Map<String, String>>) problemSet).getClass());
//
//            for (Map<String,String> problem:problemSet) {
//                System.out.println(problem.getClass());
//                System.out.println(problem);
//            }

            String insertSQL = "INSERT INTO wrong (expression,result) VALUES (?,?)";
            PreparedStatement preparedStatement = connection.prepareStatement(insertSQL);
            System.out.println(getClass());
                String expression = request.getParameter("expression" );
                String result = request.getParameter("result" );
                System.out.println(expression);
                System.out.println(result);
                preparedStatement.setString(1, expression);
                preparedStatement.setString(2, result);
                preparedStatement.executeUpdate();


            preparedStatement.close();
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if (connection != null) {
                    connection.close();
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

    }

}




AddInfoServlet
package com.example.demo;

import com.google.gson.Gson;

import java.io.IOException;
import java.lang.reflect.Type;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/addInfo")
public class AddInfoServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        request.setCharacterEncoding("utf-8");
        Connection connection = null;

        try {
            String driver = "com.mysql.cj.jdbc.Driver";
            String url = "jdbc:mysql://localhost:3306/class";
            String user = "root";
            String password = "123567";

            Class.forName(driver);
            connection = DriverManager.getConnection(url, user, password);

            if (connection != null) {
                System.out.println("数据库连接成功！");
            } else {
                System.out.println("数据库连接失败！");
            }

            final int n = 5;
//            Gson gson = new Gson();
//            String problemSetJson = request.getParameter("problemSetJson");
//            System.out.println(problemSetJson);
//            List<Map<String,String>> problemSet = new ArrayList<>();
//            problemSet = gson.fromJson(problemSetJson, ((ArrayList<Map<String, String>>) problemSet).getClass());
//
//            for (Map<String,String> problem:problemSet) {
//                System.out.println(problem.getClass());
//                System.out.println(problem);
//            }

            String insertSQL = "INSERT INTO timu (expression,result) VALUES (?,?)";
            PreparedStatement preparedStatement = connection.prepareStatement(insertSQL);
            System.out.println(getClass());
            for (int i =1; i<= n; i++)   {
                String expression = request.getParameter("expression" + Integer.toString(i));
                String result = request.getParameter("result" + Integer.toString(i));
                System.out.println(expression);
                System.out.println(result);
                preparedStatement.setString(1, expression);
                preparedStatement.setString(2, result);
                preparedStatement.executeUpdate();
            }
            System.out.println(n + " 行数据已插入。");
            preparedStatement.close();
        } catch (ClassNotFoundException | SQLException e) {
            e.printStackTrace();
        } finally {
            try {
                if (connection != null) {
                    connection.close();
                }
            } catch (SQLException e) {
                e.printStackTrace();
            }
        }

    }

}

 

标签：Web,java,write,10.18,num,出题,println,import,document
From： https://www.cnblogs.com/xuxingkai/p/17773423.html

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