java 控制台学生管理系统

import java.io.*; public class StudentOperate { private static String filePath = "data\\StuInfo.dat"; private static String stuPwdPath = "data\\stuPwd.dat"; private static String teacherPwdPath = "data\\teacherPwd.dat"; private static Student[] stu = new Student[100]; private static int i=0; //存储学生人数=i private static int inum=0; //存储学生学号 新增加的学号自动在 inum上加1 public static boolean stuPassword() throws IOException //学生密码 { FileReader fr = new FileReader(stuPwdPath); BufferedReader br = new BufferedReader(fr); String account = ""; String password = ""; System.out.print("请输入账号（初始账号“11415920”）"); account = Read(); System.out.print("请输入密码（初始密码“zhuxiongjie”）"); password = Read(); // 测试代码 // System.out.print(CHECK); // CHECK = br.readLine(); // System.out.println(br.readLine()); // System.out.println(br.readLine()); // System.out.println(account); // System.out.println(password); if(br.readLine().equals(account)&&br.readLine().equals(password)) { System.out.println("登录成功"); return false; } else { System.out.println("登录失败,请输入正确的账号和密码！！！"); return true; } } public static boolean teacherPassword() throws IOException //教师密码 { FileReader fr = new FileReader(teacherPwdPath); BufferedReader br = new BufferedReader(fr); String account = ""; String password = ""; System.out.print("请输入账号（初始账号“teacher”）"); account = Read(); System.out.print("请输入密码（初始密码“teacherQIN”）"); password = Read(); // 测试代码 // System.out.print(CHECK); // CHECK = br.readLine(); // System.out.println(br.readLine()); // System.out.println(br.readLine()); // System.out.println(account); // System.out.println(password); if(br.readLine().equals(account)&&br.readLine().equals(password)) { System.out.println("登录成功"); return false; } else { System.out.println("登录失败,请输入正确的账号和密码！！！"); return true; } } public static void readAllStudent() throws IOException //将所有学生信息读入流中 { FileReader fr = new FileReader(filePath); BufferedReader br = new BufferedReader(fr); String str = null; String[] temp =null; i=0; //重置学生人数 inum=0; // str = br.readLine(); // 第一行数据为空 跳过 while ( ((str = br.readLine()) != null )&&(str.contains(","))) { stu[i]=new Student(); temp = str.split(","); stu[i].setId(temp[0]); stu[i].setName(temp[1]); stu[i].setGender(temp[2]); stu[i].setAge(temp[3]); stu[i].setClasses(temp[4]); stu[i].setChineseGrade(temp[5]); stu[i].setMathGrade(temp[6]); stu[i].setEnglishGrade(temp[7]); inum=Integer.parseInt(stu[i].getId()); i++; } // 测试函数 // System.out.println(i); // System.out.println(stu[1].getAge()); // System.out.println(stu[4].getGender()); // stu[5].setAge("32"); // System.out.println(stu[5].getId()); // System.out.println(stu[3].getName()); fr.close(); br.close(); } public static void writeAllStudent() throws IOException {//定义把内存数据存入文件方法 BufferedWriter bw = new BufferedWriter(new FileWriter(filePath)); for(int j=0;j<stu.length;j++) { if(stu[j]!=null) { bw.write(stu[j].getId()+","+stu[j].getName()+","+stu[j].getGender() +","+stu[j].getAge()+","+stu[j].getClasses()+","+stu[j].getChineseGrade() +","+stu[j].getMathGrade()+","+stu[j].getEnglishGrade()); bw.newLine(); } } bw.close(); readAllStudent(); // System.out.println(StuCount); } public static void addStuInfo() throws IOException //添加学生学信息 { /* String name=null; String gender=null; String Sname=null; String age=null; String classes=null; String chineseGrade=null; String englishGrade=null; String mathGrade=null; */ // System.out.println("i="+i); stu[i]=new Student(); stu[i].setId(Integer.toString(inum+1)); System.out.println("请输入要添加学生的姓名：例：朱雄杰"); stu[i].setName(Read()); System.out.println("请输入要添加学生的性别：例：男\\女"); stu[i].setGender(Read()); System.out.println("请输入要添加学生的年龄：例：0~120"); stu[i].setAge(Read()); System.out.println("请输入要添加学生的年级：例：1118班"); stu[i].setClasses(Read()); System.out.println("请输入要添加学生的语文成绩：例：0~100"); stu[i].setChineseGrade(Read()); System.out.println("请输入要添加学生的数学成绩：例：0~100"); stu[i].setMathGrade(Read()); System.out.println("请输入要添加学生的英语成绩：例：0~100"); stu[i].setEnglishGrade(Read()); /* // 将数组的数据写入到文件中 BufferedWriter bw = new BufferedWriter(new FileWriter(filePath,true)); bw.newLine(); bw.write(stu[i].getId()+","+stu[i].getName()+","+stu[i].getGender() +","+stu[i].getAge()+","+stu[i].getClasses()+","+stu[i].getChineseGrade() +","+stu[i].getMathGrade()+","+stu[i].getEnglishGrade()); bw.close(); */ i=i+1; writeAllStudent(); readAllStudent(); System.out.print("\n\n添加完毕！！\n\n"); } public static void inputStuGrade() throws IOException //输入学生成绩 { /* System.out.println("请输入该学生的学号："); int j = ReadInt()+1; if(j>=i) { System.out.println("没有此学号的同学！！"); } else { if(stu[j].getChineseGrade().equals(null)) { System.out.println("请输入语文成绩："); String chi = Read(); stu[j].setChineseGrade(chi); System.out.println("请输入数学成绩："); String mat = Read(); stu[j].setMathGrade(mat); System.out.println("请输入英语成绩："); String eng = Read(); stu[j].setEnglishGrade(eng); BufferedWriter bw = new BufferedWriter(new FileWriter(filePath)); bw.newLine(); bw.write(stu[j].getId()+","+stu[j].getName()+","+stu[j].getGender() +","+stu[j].getAge()+","+stu[j].getClasses()+","+stu[j].getChineseGrade() +","+stu[j].getMathGrade()+","+stu[j].getEnglishGrade()); bw.close(); readAllStudent(); System.out.print("\n\n输入完毕！！\n\n"); } else { System.out.println("该生的成绩已存在！！"); } }*/ System.out.println("请输入该学生的学号："); /* int j = ReadInt()-1; if(j>=i) { System.out.println("没有此学号的同学！！"); } else { */ String b=Read(); int k=i; for(int j=0;j<i;j++) { if(stu[j].getId().equals(b)) { k=j; } } if(k==i) { System.out.println("对不起，你要输入的学生不存在，请核对后再试！"); } else { if(stu[k].getChineseGrade().equals("null")) { System.out.println("请输入语文成绩：例：0~100"); String chi = Read(); stu[k].setChineseGrade(chi); System.out.println("请输入数学成绩：例：0~100"); String mat = Read(); stu[k].setMathGrade(mat); System.out.println("请输入英语成绩：例：0~100"); String eng = Read(); stu[k].setEnglishGrade(eng); writeAllStudent(); readAllStudent(); System.out.print("\n\n修改完毕！！\n\n"); } else { System.out.println("该生成绩已存在！！"); } } } public static void modifyStuGrade() throws IOException //修改学生成绩 { /* System.out.println("请输入该学生的学号："); int j = ReadInt()-1; */ System.out.println("请输入该学生的学号："); String b=Read(); int k=i; for(int j=0;j<i;j++) { if(stu[j].getId().equals(b)) { k=j; } } if(k==i) { System.out.println("对不起，你要删除的学生不存在，请核对后再试！"); } else { System.out.println("该生原语文成绩为"+stu[k].getChineseGrade()+" 请输入新成绩："); String chi = Read(); stu[k].setChineseGrade(chi); System.out.println("该生原数学成绩为"+stu[k].getMat