该文件是一种基于JavaWeb的校园注册登录系统

package com.servers.impl; import com.servers.*; import com.entity.*; import java.util.Arrays; import java.util.Scanner; public class DaoForTeacher implements Dao { private Teacher[] teachers; public static final int INIT_LENGTH=10; private int count=0; public DaoForTeacher(){ this.teachers=new Teacher[INIT_LENGTH]; } // 检测id是否已经被使用 public boolean isIdUsed(int id) { if (count == 0) return false; for (int i = 0; i < count; i++) { if (teachers[i].getId() == id) { System.out.println("该id已经被注册！"); return true; } } return false; } // 注册学生 public void zhuCe() { Scanner console = new Scanner(System.in); int inId; String inName; String inSex; int inAge; boolean isTrue = true; String input = ""; do { System.out.println("请输入8位数的工号："); input = console.nextLine(); String reg = "^\\s*\\d{8}\\s*$"; isTrue = input.matches(reg); inId = Integer.parseInt(input.trim()); } while (!isTrue || isIdUsed(inId)); do { System.out.println("请输入中文姓名："); input = console.nextLine(); String reg = "^\\s*[\\u4e00-\\u9fa5]{2,10}\\s*$"; isTrue = input.matches(reg); } while (!isTrue); inName = input.trim(); do { System.out.println("请输入性别‘男’或‘女’："); input = console.nextLine(); String reg = "^\\s*[男女]\\s*$"; isTrue = input.matches(reg); } while (!isTrue); inSex = input.trim(); do { System.out.println("请输入年龄："); input = console.nextLine(); String reg = "^\\s*[1-9][0-9]*\\s*$"; isTrue = input.matches(reg); } while (!isTrue); inAge = Integer.parseInt(input.trim()); Teacher teacher = new Teacher(inId, inName, inSex, inAge); if(count>=teachers.length){ teachers=Arrays.copyOf(teachers, teachers.length+10); } teachers[count] = teacher; count++; System.out.println(teacher + " 注册成功！"); } // 登录老师 public boolean load() { Scanner console = new Scanner(System.in); String input; boolean isTrue; int inId; String inName; do { System.out.println("请输入8位数的工号："); input = console.nextLine(); String reg = "^\\s*\\d{8}\\s*$"; isTrue = input.matches(reg); inId = Integer.parseInt(input.trim()); } while (!isTrue); do { System.out.println("请输入姓名："); input = console.nextLine(); String reg = "\\s*[\\u4e00-\\u9fa5]{2,10}\\s*$"; isTrue = input.matches(reg); } while (!isTrue); inName = input.trim(); for (int i = 0; i < count; i++) { if (inId == teachers[i].getId()&& inName.equals(teachers[i].getName())) { System.out.println("教师 "+teachers[i].getName() + " 登录成功！"); return true; } } System.out.println("登录失败！输入信息错误或用户不存在！"); return false; } public void showInfo() { System.out.println("\t＊＊教师信息＊＊"); for (int i = 0; i < count; i++) { System.out.println("\t" + teachers[i]); } System.out.println(); } }