13518219792
package StudentIOTest02;
import java.io.*;
import java.util.*;
public class Student implements java.io.Serializable {
@Serial
private static final long serialVersionUID = -6284145330510018985L;
private int no;
private String name;
private boolean sex;
private Birth date;//不参与序列化
private Serializable serializable;
private DeSerializable deSerializable;
private transient Liststudents;
//list使用transient关键字 是为了给toString一个标记 运用三目运算符来决定toString输出形式
//（当然可以用两个toString方法）
public Student() {
// 默认初始化
this.serializable = new Serializable();
this.deSerializable = new DeSerializable();
this.students = new ArrayList();
}
public Student(int no, String name, boolean sex, Birth date) {
this.no = no;
this.name = name;
this.sex = sex;
this.date = date;
}
// 由于进入系统需要初始化已有学生
public void loading() throws IOException {
this.students.add(new Student(1,"zhangsan",true,new Birth(2004,5,2)));
this.students.add(new Student(2,"lisi",true,new Birth(1981,7,14)));
this.serializable.ouputStrean(this.students);
}
// [1]查看学生列表
public void checkList() throws IOException, ClassNotFoundException {
this.deSerializable.inputStream();
}
// [2]增加学生
public void addStudent() throws IOException {
while(true)
{
System.out.println("请输入学生的学号");
Scanner scanner = new Scanner(System.in);
int num =scanner.nextInt();
//增加需要在末尾加 获取学号大值 加入学生
if(num == this.students.size()+1)
{
System.out.println("请依次输入学生的姓名、性别、出生年月日");
this.students.add(new Student(num,scanner.next(),scanner.nextBoolean(),new Birth(scanner.nextInt(),scanner.nextInt(),scanner.nextInt())));
this.serializable.ouputStrean(this.students);
System.out.println("添加成功");
this.serializable.ouputStrean(this.students);
Collections.sort(this.students, new Comparator() {
@Override
public int compare(Student o1, Student o2) {
return o1.no - o2.no;
}
});
break;
}else System.out.println("请重新输入");
}
}
// [3]删除学生
public void deleteStudent( ) throws IOException {
while(true)
{
Scanner scanner = new Scanner(System.in);
int n1 = scanner.nextInt();
if(n1 >0 && n1< this.students.size()) {
//移除元素是需要-1 因为是下标
this.students.remove(n1 - 1);
this.serializable.ouputStrean(this.students);
System.out.println("删除成功");
this.serializable.ouputStrean(this.students);
//进行排序
Collections.sort(this.students, new Comparator() {
@Override
public int compare(Student o1, Student o2) {
return o1.no - o2.no;
}
});
break;
}else System.out.println("您输入的学号不存在，重新输入");
}
}
//[4]查看某个学生详细信息
public void readAll()
{
while(true)
{
System.out.println("输入您要查看学生的学号");
Scanner scanner = new Scanner(System.in);
int no = scanner.nextInt();
if (no == 0 || no >this.students.size())
{
System.out.println("不存在该学生");
}else if(! (this.students.get(no-1) instanceof Student))
{
System.out.println("不存在该学生，请重新输入");
}else
{
System.out.println(this.students.get(no-1).toString());
break;
}
}
}
// 查找某位学生是否存在
public void searchStudent()
{
while(true)
{
System.out.println("输入您要查找学生的学号");
Scanner scanner = new Scanner(System.in);
int no = scanner.nextInt();
if (no == 0 || no >this.students.size())
{
System.out.println("不存在该学生");
}else if(! (this.students.get(no-1) instanceof Student))
{
System.out.println("不存在该学生");
}else
{
System.out.println("找到了该学生！！");
System.out.println(this.students.get(no-1).toString());
break;
}
}
}
// 6 修改某位同学的信息
public void correct() throws IOException {
while(true) {
System.out.println("输入您所修改学生的学号");
Scanner scanner = new Scanner(System.in);
int no = scanner.nextInt();
if (no == 0 || no >this.students.size()) {
System.out.println("不存在该学生");
} else if (!(this.students.get(no - 1) instanceof Student)) {
System.out.println("不存在该学生");
} else {
Scanner scanner1 = new Scanner(System.in);
System.out.println("请依次输入该学生的学号、姓名、性别（True或False[True==男]）、出生年、月、日");
Student student = new Student(scanner1.nextInt(),scanner.next(),scanner.nextBoolean(),
new Birth(scanner1.nextInt(),scanner1.nextInt(),scanner1.nextInt()));
this.students.remove(no);//移除该学生
this.students.add(student);//加入新的信息
this.serializable.ouputStrean(this.students);
// 按照升序排序
Collections.sort(this.students, new Comparator() {
@Override
public int compare(Student o1, Student o2) {
return o1.no - o2.no;
}
});
break;
}
}
}
public int getNo() {
return no;
}
public void setNo(int no) {
this.no = no;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public boolean isSex() {
return sex;
}
public void setSex(boolean sex) {
this.sex = sex;
}
public Birth getDate() {
return date;
}
public void setDate(Birth date) {
this.date = date;
}
public Serializable getSerializable() {
return serializable;
}
public void setSerializable(Serializable serializable) {
this.serializable = serializable;
}
public DeSerializable getDeSerializable() {
return deSerializable;
}
public void setDeSerializable(DeSerializable deSerializable) {
this.deSerializable = deSerializable;
}
public ListgetStudents() {
return students;
}
public void setStudents(Liststudents) {
this.students = students;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
Student student = (Student) o;
return no == student.no;
}
@Override
public String toString() {
return (this.students == null)?("学生学号"+this.getNo()+"\n"+
"名字"+this.getName()+"\n"+
"性别"+(this.isSex()?"男":"女")+"\n"+
"生日"+this.date.getYear()+"-"+this.date.getMonth()+""+this.date.getDay()):"学生学号"+this.getNo()+"\t"+
"名字"+this.getName()+"\t"+
"性别"+(this.isSex()?"男":"女")+"\t" ;
}
@Override
public int hashCode() {
return Objects.hash(no);
}
}
//学生生日
class Birth implements java.io.Serializable
{
@Serial
private static final long serialVersionUID = 4769685585810521642L;
private int year;
private int month;
private int day;
public Birth() {
}
public Birth(int year, int month, int day) {
this.year = year;
this.month = month;
this.day = day;
}
public int getYear() {
return year;
}
public void setYear(int year) {
this.year = year;
}
public int getMonth() {
return month;
}
public void setMonth(int month) {
this.month = month;
}
public int getDay() {
return day;
}
public void setDay(int day) {
this.day = day;
}
}
//序列化
class Serializable
{
public void ouputStrean(Liststudents) throws IOException {
ObjectOutputStream outputStream = new ObjectOutputStream(new FileOutputStream("C:\\Users\\33769\\Desktop\\JavaTestIOFile\\Test02"));
outputStream.writeObject(students);
// 刷新
outputStream.flush();
// 关闭
outputStream.close();
}
}
//反序列化
class DeSerializable
{
public void inputStream() throws IOException, ClassNotFoundException {
ObjectInputStream inputStream = new ObjectInputStream(new FileInputStream("C:\\Users\\33769\\Desktop\\JavaTestIOFile\\Test02"));
Liststudents1 = (List) inputStream.readObject();
for (Student student: students1
) {
System.out.println(student.toString());
}
// 关闭
inputStream.close();
}
} Test测试实现代码：
package StudentIOTest02;
import java.io.IOException;
import java.util.Scanner;
public class Test {
public static void main(String[] args) {
// 初始化系统
Student student = new Student();
try {
student.loading();//加载学生
} catch (IOException e) {
throw new RuntimeException(e);
}
Scanner scanner = new Scanner(System.in);
A: while(true)
{
System.out.println("欢迎使用学生信息管理系统，请认真阅读以下使用说明：\n" +
"请输入不同的功能编号来选择不同的功能：\n" +
"[1]查看学生列表\n" +
"[2]增加学生 \n" +
"[3]删除学生\n" +
"[4]查看某个学生详细信息\n"+
"[5]查找某位学生\n"+
"[6]修改某位同学的信息");
int no = scanner.nextInt();
if(no<0 || no >6)
{
System.out.println("请重新输入");
}else if(no == 1)
{
try {
student.checkList();
continue A;
} catch (IOException e) {
throw new RuntimeException(e);
} catch (ClassNotFoundException e) {
throw new RuntimeException(e);
}
}else if(no == 2)
{
try {
student.addStudent();
continue A;
} catch (IOException e) {
throw new RuntimeException(e);
}
} else if (no == 3) {
try {
student.deleteStudent();
continue A;
} catch (IOException e) {
throw new RuntimeException(e);
}
}else if(no == 4)
{
student.readAll();
continue A;
}else if(no == 5)
{
student.searchStudent();
continue A;
}else if (no == 6)
{
try {
student.correct();
continue A;
} catch (IOException e) {
throw new RuntimeException(e);
}
}
}
}
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