Java_Project_Exercise.zip

package controller; import beans.User; import service.IUserSevice; import service.impl.UserServiceImpl; import java.util.ArrayList; import java.util.List; import java.util.Scanner; import java.util.UUID; /** * @author wqd * @create 2025-01-09 22:33 */ public class BookManagerController { Scanner scanner = new Scanner(System.in); IUserSevice sevice = new UserServiceImpl(); User user = new User(); //创建集合，用于遍历 List<User> userList = new ArrayList<User>(); public void start(){ Boolean index = true; while (index){ System.out.println("**************************"); System.out.println("\t欢迎使用图书管理系统\t"); System.out.println("**************************"); System.out.println("\t\t1 登录"); System.out.println("\t\t2 注册"); System.out.println("\t\t0 退出"); System.out.print("请选择您想要的操作："); int anInt = scanner.nextInt(); switch (anInt){ case 1: //登录 for (int i = 1; i <= 3; i++) { System.out.print("请输入用户名："); String name = scanner.next(); System.out.print("请输入密码："); String password = scanner.next(); User userpwd = sevice.findUserByUsernameAndPwd(name, password); if (userpwd != null) { if ("1".equals(userpwd.getFlag())) { System.out.println("欢迎您：" + name); System.out.println("****************"); System.out.println("\t1 新增"); System.out.println("\t2 查看"); System.out.println("\t3 删除"); System.out.println("\t4 借阅"); System.out.println("\t5 归还"); System.out.println("\t0 退出"); System.out.println("****************"); } else { System.out.println("欢迎您：" + name); System.out.println("****************"); System.out.println("\t2 查看"); System.out.println("\t4 借阅"); System.out.println("\t5 归还"); System.out.println("\t0 退出"); System.out.println("****************"); } break; } else { System.out.println("您输入的用户名或密码错误！"); if ((3-i)==0){ System.out.println("您的机会用完，程序结束"); return; }else { System.out.println("您还有"+(3-i)+"次机会！"); } } } System.out.print("请选择您的操作："); int choice = scanner.nextInt(); switch (choice){ case 1: //新增 break; case 2: //查看 break; case 3: //删除 break; case 4: //借阅 break; case 5: //归还 break; case 0: //退出 System.out.println("程序结束，谢谢您的使用！"); index = false; default: break; } break; case 2: //注册 //获取表中数据 UUID uuid = UUID.randomUUID(); String id = uuid.toString().substring(0, 32); String uname = null; String upassword = null; String upassword2 = null; Boolean index2 = true; while (index2){ System.out.print("请输入姓名："); uname = scanner.next().trim().replaceAll("\\p{C}",""); System.out.print("请输入密码："); upassword = scanner.next(); System.out.print("请确认密码："); upassword2 = scanner.next(); //判断用户名是否有同名 List<User> iterate = sevice.iterate(); for (User us:iterate) { boolean equals = us.getUsername().trim().replaceAll("\\p{C}","").equals(uname); if (!equals){ if (upassword.equals(upassword2)){ sevice.add(id, uname, upassword); System.out.println("添加成功"); index2 = false; break; }else { System.out.println("两次密码不一致，请重新输入"); break; } }else { System.out.println("用户名相同,请重新输入"); break; } } } break; case 0: //退出 System.out.println("程序结束，谢谢使用！"); index = false; break; default: break; } } } public static void main(String[] args) { BookManagerController bmk = new BookManagerController(); bmk.start(); } }