java项目：使用面向对象技术完成双色球购买及抽奖程序(控制台程序+mysql)

package com.heima.demo; import java.sql.*; import java.util.*; public class Lottery { public static void main(String[] args) throws SQLException { while (true){ System.out.println("请选择：1 购买彩票 2 开奖 3 大奖查询 4 退出"); Scanner sc = new Scanner(System.in); int t = sc.nextInt(); if (t == 1 ){ System.out.println("请输入购买彩票数量: "); int vool = sc.nextInt(); List<String> temps = new ArrayList<>(); for (int i=0;i<vool*5;i++){ print(createLuckNums(),temps); } String joins = String.join("@@@", temps); System.out.println("请输入购彩人姓名："); String name = sc.next(); System.out.println("请输入学号："); String number1 = sc.next(); System.out.println("请输入出生日期"); String bir = sc.next(); Connection conn = JdbcUtils.getConnect(); PreparedStatement ps = null; try { String sql = "insert into purchaser values(?,?,?,?)"; ps = conn.prepareStatement(sql); ps.setString(1,name); ps.setString(2,number1); ps.setString(3,bir); ps.setString(4,joins); int i = ps.executeUpdate(); System.out.println(i); } catch (SQLException e) { e.printStackTrace(); } } if (t == 2){ List<String> temps = new ArrayList<>(); System.out.println("本次中奖号码为："); print(createLuckNums(),temps); String joins = String.join("@@@", temps); System.out.println("请输入开奖人姓名："); String name = sc.next(); System.out.println("请输入开奖日期"); String bir = sc.next(); Connection conn = JdbcUtils.getConnect(); PreparedStatement ps = null; String sql = "insert into lotter_info values(?,?,?)"; try { ps = conn.prepareStatement(sql); ps.setString(1,name); ps.setString(2,bir); ps.setString(3,joins); int i = ps.executeUpdate(); System.out.println(i); } catch (SQLException e) { e.printStackTrace(); } } if (t == 3){ Connection conn = JdbcUtils.getConnect(); PreparedStatement ps = null; ResultSet resultSet = null; //执行查询 ps = conn.prepareStatement("select * from purchaser"); resultSet = ps.executeQuery(); String numberstr = ""; String name = ""; //操作ResultSet对象获取查询的结果集 while(resultSet.next()){ //获取列中的数据 numberstr = resultSet.getString("buyNo"); name = resultSet.getString("name"); } String[] split = numberstr.split("@@@"); Map<Integer,String> map = new HashMap<>(); ps = conn.prepareStatement("select * from lotter_info"); resultSet = ps.executeQuery(); int[] tempnum = new int[7]; //操作ResultSet对象获取查询的结果集 List<String> tlist = new ArrayList<>(); while(resultSet.next()){ //获取列中的数据 tlist.add(resultSet.getString("win_number")); } String s1 = tlist.get(tlist.size() - 1); String[] split2 = s1.split(","); for (int i = 0; i < split2.length; i++) { tempnum[i] = Integer.parseInt(split2[i]); } for (String s : split) { int[] luckNums1 = new int[7]; String[] split1 = s.split(","); for (int i = 0; i < split1.length; i++) { luckNums1[i] = Integer.parseInt(split1[i]); } int res = judge(tempnum,luckNums1); map.put(res,s); } for (int i = 6; i >= 0 ; i--) { if (map.containsKey(0)){ System.out.println(name + "购彩人运气不佳，期待下次中奖"); }else{ System.out.println("恭喜获得" + i + " 等奖，中奖彩票号码为：" + map.get(i)); } break; } } if (t == 4){ System.out.println("退出系统"); break; } } } public static int[] createLuckNums() { int[] luckNums = new int[7]; Random r = new Random(); // 1-6 为红球 for (int i = 0; i < luckNums.length - 1; i++) { // 随机生成 1-33 的数字 while (true) { int data = r.nextInt(33) + 1; boolean flag = true; for (int j = 0; j < i; j++) { if (luckNums[j] == data) { flag = false; break; } } if (flag) { luckNums[i] = data; break; } } } // 最后一个为蓝球 luckNums[luckNums.length - 1] = r.nextInt(16) + 1; return luckNums; } public static void print(int[] arr,List<String> temps) { StringBuffer buf = new StringBuffer(); for (int i = 0; i < arr.length; i++) { buf.append(i == arr.length - 1 ? arr[i] : arr[i] + ","); } System.out.println(buf.toString()); if (temps != null){ temps.add(buf.toString()); } } public static int judge(int[] luckNums, int[] userNums) { int redCount = 0; int blueCount = 0; String winString = ""; int result = 0; // 统计红球命中个数 for (int i = 0; i < userNums.length - 1; i++) { for (int j = 0; j < luckNums.length - 1; j++) { if (userNums[i] == luckNums[j]) { redCount++; break; } } } // 蓝球是否命中 blueCount = userNums[userNums.length - 1] == luckNums[luckNums.length - 1] ? 1 : 0; winString = redCount + "+" + blueCount; System.out.println("中奖号码为: "); print(luckNums); System.out.println("投注号码为: "); print(userNums); System.out.println("您命中的红球数为: " + redCount); System.out.println("您命中的蓝球数为: " + blueCount); // 判断中奖情况 switch (winString) { case "0+1": case "1+1": case "2+1": result = 6; break; case "3+1": case "4+0": result = 5; break; case "4+1": case "5+0": result = 4; break; case "5+1": result = 3; break; case "6+0": result = 2; break;