使用javaFX编辑的学生管理系统

public class Student {
private String Name;
private String Number;
private String Class;
private int Score;

public Student(){
this("sdiuf h","6544534","ef esf",48);
}

public Student(String Name,String Number,String Class){
this(Name,Number,Class,0);
}

public Student(String Name,String Class,String Number,int Score){
this.Name = Name;
this.Number = Number;
this.Score = Score;
this.Class = Class;
}

public void SetName(String Name){
this.Name = Name;
}

public void SetNumber(String Number){
this.Number = Number;
}

public void SetClass(String Class){
this.Class = Class;
}

public void SetScore(int Score){
this.Score = Score;
}

public String GetName(){
return Name;
}

public String GetNumber(){
return Number;
}

public String GetClass(){
return Class;
}

public int GetScore(){
return Score;
}
}

import java.io.*;
import java.util.Scanner;
import java.util.logging.Level;
import java.util.logging.Logger;
import javafx.application.Application;
import javafx.scene.Scene;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.TextField;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.GridPane;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import javafx.scene.shape.Rectangle;
import javafx.scene.text.Font;
import javafx.scene.text.Text;
import javafx.stage.Stage;

public class Students extends Application{
static int i = 0;
private TextField setName = new TextField();
private TextField setNumber = new TextField();
private TextField setClass = new TextField();
private TextField setGrade = new TextField();
Stage stage = new Stage();

@Override
public void start(Stage primaryStage) throws Exception {//声明异常
GridPane pane = new GridPane();

pane.setHgap(20);
pane.setVgap(10);

Button[] bt = new Button[7];
bt[1] = new Button("清空学生数据库");
bt[2] = new Button("增添学生数据");
bt[3] = new Button("删除学生数据");
bt[4] = new Button("修改学生数据");
bt[5] = new Button("查看学生数据");
bt[6] = new Button("显示所有学生数据");
bt[0] = new Button("退出应用");

pane.add(new Label("\t\t"), 2, 0);
pane.add(new Label("\t\t"), 0, 0);
pane.add(bt[1], 1, 1);
pane.add(bt[2], 1, 2);
pane.add(bt[3], 1, 3);
pane.add(bt[4], 1, 4);
pane.add(bt[5], 1, 5);
pane.add(bt[6], 1, 6);
pane.add(bt[0], 1, 7);
pane.add(new Label("\t\t"), 1, 9);

Pane pane2 = new Pane();
Rectangle rectangle;
for(int j = 0; j < 20; j ++)
for(int c = 0; c < 20; c ++){
rectangle = new Rectangle(j * 20, c * 20, 20, 20);
rectangle.setFill(Color.color(Math.random(), Math.random(), Math.random(), 0.3));
pane2.getChildren().addAll(rectangle);
}//作为背景存在
pane2.getChildren().addAll(pane);//将pane面板覆盖在pane2上
Scene scene = new Scene(pane2, 290, 350);//定义面板大小
stage.setTitle("Students");
stage.setScene(scene);
stage.show();

bt[0].setOnAction(e -> EXIT());
bt[1].setOnAction(e -> closeStudents());
bt[2].setOnAction(e -> addStudents());
bt[3].setOnAction(e -> deleteStudents());
bt[4].setOnAction(e -> amendStudents());
bt[5].setOnAction(e -> checkStundets());
bt[6].setOnAction(e -> {
try {
checkallStudents();
}
catch (FileNotFoundException ex) {//捕获异常
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

public static void main(String[] args){
Application.launch(args);
}

private void EXIT() {//关闭界面，结束程序
stage.close();
}

private void closeStudents() {//清空数据

Pane pane = new Pane();
Text text = new Text(200, 200, "你确定要删除所有数据！");
text.setFill(Color.RED);
text.setFont(Font.font(20));//定义字体大小

Button bt1 = new Button("Ok");
Button bt2 = new Button("no");
bt1.setLayoutX(200);
bt1.setLayoutY(230);
bt2.setLayoutX(350);
bt2.setLayoutY(230);

Image image = new Image("http://i-7.vcimg.com/trim/0c0a306c6947c8c125c52a25850a22181611368/trim.jpg");//获取图片
ImageView imageview = new ImageView(image);
imageview.setFitHeight(448);
imageview.setFitWidth(600);//更改图片大小
pane.getChildren().add(imageview);

pane.getChildren().addAll(text, bt1, bt2);
Scene scene = new Scene(pane);
stage.setScene(scene);

bt1.setOnAction(e -> {
try {
YES();
}
catch (FileNotFoundException ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});

bt2.setOnAction(e -> {
try {
start(stage);//返回主界面
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

private void YES() throws FileNotFoundException{//确定清除数据
File fl = new File("Students.txt");
try (PrintWriter output = new PrintWriter(fl)) {
}//向文件中写入新的学生信息

File Fl = new File("Number.txt");
try(PrintWriter output = new PrintWriter(Fl)){
output.print(0);//定义学生数量为0
}

Text text = new Text(100, 100, "程序已将所有数据删除！\n你现在有以下两种选择:");
Button bt1 = new Button("添加学生");
Button bt2 = new Button("退出应用");
bt1.setLayoutX(130);
bt1.setLayoutY(130);
bt2.setLayoutX(130);
bt2.setLayoutY(180);

Pane pane = new Pane();
pane.getChildren().addAll(text, bt1, bt2);
Scene scene = new Scene(pane,350, 300);

stage.setScene(scene);

bt1.setOnAction(e -> addStudents());
bt2.setOnAction(e -> EXIT());
}

private void addStudents() {//添加学生1

Button bt = new Button("OK");
GridPane pane = new GridPane();
pane.setHgap(20);
pane.setVgap(10);

pane.add(new Label("new student's name："), 0, 1);
pane.add(setName, 1, 1);
pane.add(new Label("new student's class："), 0, 2);
pane.add(setClass, 1, 2);
pane.add(new Label("new student's number："), 0, 3);
pane.add(setNumber, 1, 3);
pane.add(new Label("new student's grade："), 0, 4);
pane.add(setGrade, 1, 4);
pane.add(bt, 1, 5);

Scene scene = new Scene(pane);
stage.setTitle("new Staudents");
stage.setScene(scene);

bt.setOnAction(e -> {
try {
addstudents();
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

private void addstudents() throws Exception {//添加学生2

Student stu = new Student(setName.getText(), setClass.getText(),
setNumber.getText(), Integer.parseInt(setGrade.getText()));//使用自定义的类暂时储存数据

File Fl = new File("Number.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}
catch(Exception e){
i = 0;
}

try (FileWriter out = new FileWriter("Students.txt",true)) {
out.write("\t");
out.write(stu.GetName() + "\t");
out.write(stu.GetClass() + "\t");
out.write(stu.GetNumber() + "\t");
out.write(stu.GetScore() + "\n");
}

i++;
try(PrintWriter output = new PrintWriter(Fl)){
output.print(i);
}

start(stage);
}

private void deleteStudents() {//删除学生1
Text text = new Text(100, 100, "请输入你要操作学员的学号:");
setNumber.setLayoutX(100);
setNumber.setLayoutY(120);
Button bt = new Button("ok");
bt.setLayoutX(170);
bt.setLayoutY(165);
Pane pane = new Pane();
pane.getChildren().addAll(text, setNumber, bt);

Scene scene = new Scene(pane, 400, 280);
stage.setScene(scene);

bt.setOnAction(e -> {
try {
deletestudents();
}
catch (FileNotFoundException ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

private void deletestudents() throws FileNotFoundException{//删除学生2
File Fl = new File("Number.txt");
File fl = new File("Students.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}

String Number = setNumber.getText();

Student[] stu = new Student[i];
int j;
try(Scanner Input = new Scanner(fl)){
for(j =0; j < i;j++){
stu[j] = new Student(Input.next(), Input.next(),
Input.next(), Input.nextInt());
if(Number.compareTo(stu[j].GetNumber()) == 0){
Text text1 = new Text(100, 50, "name:\t" + stu[j].GetName());
Text text2 = new Text(100, 80, "class:\t" + stu[j].GetClass());
Text text3 = new Text(100, 120, "Number:\t" + stu[j].GetNumber());
Text text4 = new Text(100, 150, "grade:\t" + stu[j].GetScore());

Button bt1 = new Button("delete");
Button bt2 = new Button("out");
bt1.setLayoutX(100);
bt1.setLayoutY(180);
bt2.setLayoutX(200);
bt2.setLayoutY(180);
Pane pane = new Pane();
pane.getChildren().addAll(text1, text2, text3, text4, bt1, bt2);
Scene scene = new Scene(pane, 350, 280);
stage.setScene(scene);

bt1.setOnAction(e -> {
try {
detele();
}
catch (FileNotFoundException ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
bt2.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
break;
}
}

if(j == i ){
Text text = new Text(100, 100, "No fond this person!");
text.setFill(Color.RED);
Button bt1 = new Button("again");
Button bt2 = new Button("out");
bt1.setLayoutX(100);
bt1.setLayoutY(130);
bt2.setLayoutX(200);
bt2.setLayoutY(130);
Pane pane = new Pane();
pane.getChildren().addAll(text, bt1, bt2);

Scene scene = new Scene(pane, 350, 250);
stage.setScene(scene);

bt1.setOnAction(e -> deleteStudents());
bt2.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}
}
}

private void detele() throws FileNotFoundException, Exception {//删除学生3
File Fl = new File("Number.txt");
File fl = new File("Students.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}

String Number = setNumber.getText();

Student[] stu = new Student[i];
try(Scanner Input = new Scanner(fl)){
for(int j =0; j < i;j++){
stu[j] = new Student(Input.next(), Input.next(),
Input.next(), Input.nextInt());
if(Number.compareTo(stu[j].GetNumber()) == 0){//确定删除则用下一组数据，将要删除的数据覆盖
i --;
j --;
}
}
}

try(PrintWriter output = new PrintWriter(Fl)){
output.print(i);
}

if(i == 0){//如果删除后的学生数量为0，则不输入如何学生数据，使文件的内容为空
try (PrintWriter output = new PrintWriter(fl)) {
}
}
else{
try (PrintWriter output = new PrintWriter(fl)) {
for(int j = 0;j < i;j ++){
output.print(stu[j].GetName() + "\t");
output.print(stu[j].GetNumber() + "\t");
output.print(stu[j].GetClass() + "\t");
output.println(stu[j].GetScore());
}
}
}
start(stage);
}

private void amendStudents() {//修改学生1
Pane pane = new Pane();
Text text = new Text(100, 100.0, "请输入你要操作学员的学号:");
setNumber.setLayoutX(100);
setNumber.setLayoutY(120);

Rectangle rectangle;
for(int j = 0; j < 20; j ++)
for(int c = 0; c < 20; c ++){
rectangle = new Rectangle(j * 20, c * 20, 20, 20);
rectangle.setFill(Color.color(Math.random(), Math.random(), Math.random(), 0.3));
pane.getChildren().addAll(rectangle);
}
Button bt = new Button("ok");
bt.setLayoutX(170);
bt.setLayoutY(165);
pane.getChildren().addAll(text, setNumber, bt);//画面重合时，添加的先后顺序决定了那个类型覆盖在另一个类型上

Scene scene = new Scene(pane, 400, 280);
stage.setScene(scene);

bt.setOnAction(e -> {
try {
amendstudents();
}
catch (FileNotFoundException ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

private void amendstudents() throws FileNotFoundException {//修改学生2
File Fl = new File("Number.txt");
File fl = new File("Students.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}

String Number = setNumber.getText();

Student[] stu = new Student[i];
int j;
try(Scanner Input = new Scanner(fl)){
for(j =0; j < i;j++){
stu[j] = new Student(Input.next(), Input.next(),
Input.next(), Input.nextInt());
if(Number.compareTo(stu[j].GetNumber()) == 0){
Text text1 = new Text(100, 50, "name:\t" + stu[j].GetName());
Text text2 = new Text(100, 80, "class:\t" + stu[j].GetClass());
Text text3 = new Text(100, 120, "Number:\t" + stu[j].GetNumber());
Text text4 = new Text(100, 150, "grade:\t" + stu[j].GetScore());

Button bt1 = new Button("amend");
Button bt2 = new Button("out");
bt1.setLayoutX(100);
bt1.setLayoutY(180);
bt2.setLayoutX(200);
bt2.setLayoutY(180);
Pane pane = new Pane();
pane.getChildren().addAll(text1, text2, text3, text4, bt1, bt2);
Scene scene = new Scene(pane, 350, 280);
stage.setScene(scene);

bt1.setOnAction(e -> amend());
bt2.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
break;
}
}

if(j == i ){
Text text = new Text(100, 100, "No fond this person!");
text.setFill(Color.RED);
Button bt1 = new Button("again");
Button bt2 = new Button("out");
bt1.setLayoutX(100);
bt1.setLayoutY(130);
bt2.setLayoutX(200);
bt2.setLayoutY(130);
Pane pane = new Pane();
pane.getChildren().addAll(text, bt1, bt2);

Scene scene = new Scene(pane, 350, 250);
stage.setScene(scene);

bt1.setOnAction(e -> amendStudents());
bt2.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}
}
}

private void amend() {//修改学生3
TextField newName = new TextField();
TextField newClass = new TextField();
TextField newNumber = new TextField();
TextField newGrade = new TextField();

Button bt = new Button("OK");
GridPane pane = new GridPane();
pane.setHgap(20);
pane.setVgap(10);

pane.add(new Label("new name："), 0, 1);
pane.add(newName, 1, 1);
pane.add(new Label("new class："), 0, 2);
pane.add(newClass, 1, 2);
pane.add(new Label("new number："), 0, 3);
pane.add(newNumber, 1, 3);
pane.add(new Label("new grade："), 0, 4);
pane.add(newGrade, 1, 4);
pane.add(bt, 1, 5);

Scene scene = new Scene(pane);
stage.setScene(scene);

bt.setOnAction(e -> {
try {
Amend(newName, newClass,
newNumber, newGrade);
}
catch (FileNotFoundException ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
} catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

private void Amend(TextField newName, TextField newClass, TextField newNumber,
TextField newGrade) throws FileNotFoundException, Exception {//修改学生4
File Fl = new File("Number.txt");
File fl = new File("Students.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}

String Number = setNumber.getText();

Student[] stu = new Student[i];
try(Scanner Input = new Scanner(fl)){
for(int j =0; j < i;j++){
stu[j] = new Student(Input.next(), Input.next(),
Input.next(), Input.nextInt());
if(Number.compareTo(stu[j].GetNumber()) == 0){
stu[j] = new Student(newName.getText(), newClass.getText(),
newNumber.getText(), Integer.parseInt(newGrade.getText()));
}
}
}

try(PrintWriter output = new PrintWriter(Fl)){
output.print(i);
}

if(i == 0){
try (PrintWriter output = new PrintWriter(fl)) {
}
}
else{
try (PrintWriter output = new PrintWriter(fl)) {
for(int j = 0;j < i;j ++){
output.print(stu[j].GetName() + "\t");
output.print(stu[j].GetNumber() + "\t");
output.print(stu[j].GetClass() + "\t");
output.println(stu[j].GetScore());
}
}
}
start(stage);
}

private void checkStundets() {//查看学生1
Text text = new Text(100, 100, "请输入你要操作学员的学号:");
setNumber.setLayoutX(100);
setNumber.setLayoutY(120);
Button bt = new Button("ok");
bt.setLayoutX(170);
bt.setLayoutY(165);
Pane pane = new Pane();
pane.getChildren().addAll(text, setNumber, bt);

Scene scene = new Scene(pane, 400, 280);
stage.setScene(scene);

bt.setOnAction(e -> {
try {
checktudents();
}
catch (FileNotFoundException ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}

private void checktudents() throws FileNotFoundException {//查看学生2
File Fl = new File("Number.txt");
File fl = new File("Students.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}

String Number = setNumber.getText();

Student[] stu = new Student[i];
int j;
try(Scanner Input = new Scanner(fl)){
for(j =0; j < i;j++){
stu[j] = new Student(Input.next(), Input.next(),
Input.next(), Input.nextInt());
if(Number.compareTo(stu[j].GetNumber()) == 0){
Text text1 = new Text(100, 50, "name:\t" + stu[j].GetName());
Text text2 = new Text(100, 80, "class:\t" + stu[j].GetClass());
Text text3 = new Text(100, 120, "Number:\t" + stu[j].GetNumber());
Text text4 = new Text(100, 150, "grade:\t" + stu[j].GetScore());

Button bt2 = new Button("out");
bt2.setLayoutX(100);
bt2.setLayoutY(180);
Pane pane = new Pane();
pane.getChildren().addAll(text1, text2, text3, text4, bt2);
Scene scene = new Scene(pane, 280, 250);
stage.setScene(scene);

bt2.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
break;
}
}

if(j == i ){
Text text = new Text(100, 100, "No fond this person!");
text.setFill(Color.RED);
Button bt1 = new Button("again");
Button bt2 = new Button("out");
bt1.setLayoutX(100);
bt1.setLayoutY(130);
bt2.setLayoutX(200);
bt2.setLayoutY(130);
Pane pane = new Pane();
pane.getChildren().addAll(text, bt1, bt2);

Scene scene = new Scene(pane, 350, 250);
stage.setScene(scene);

bt1.setOnAction(e -> amendStudents());
bt2.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
}
}
}

private void checkallStudents() throws FileNotFoundException {//显示所有学生数据
File Fl = new File("Number.txt");
File fl = new File("Students.txt");
try (Scanner input = new Scanner(Fl)) {
i = input.nextInt();
}

GridPane pane = new GridPane();
pane.setHgap(20);
pane.setVgap(10);

pane.add(new Label("次序") , 0, 0);
pane.add(new Label("姓名"), 1, 0);
pane.add(new Label("班级"), 2, 0);
pane.add(new Label("学号"), 3, 0);
pane.add(new Label("成绩"), 4, 0);
Student[] stu = new Student[i];
Text[][] text = new Text[i][4];
int j;
try(Scanner Input = new Scanner(fl)){
for(j =0; j < i;j++){
stu[j] = new Student(Input.next(), Input.next(),
Input.next(), Input.nextInt());
text[j][0] = new Text(stu[j].GetName());
text[j][1] = new Text(stu[j].GetClass());
text[j][2] = new Text(stu[j].GetNumber());
text[j][3] = new Text("" + stu[j].GetScore());
pane.add(new Label("" + j + 1), 0, j + 1);
pane.add(text[j][0], 1, j + 1);
pane.add(text[j][1], 2, j + 1);
pane.add(text[j][2], 3, j + 1);
pane.add(text[j][3], 4, j + 1);
}
}
Button bt = new Button("out");
pane.add(bt, 2, j + 1);

bt.setOnAction(e -> {
try {
start(stage);
}
catch (Exception ex) {
Logger.getLogger(Students.class.getName()).log(Level.SEVERE, null, ex);
}
});
Scene scene = new Scene(pane);
stage.setScene(scene);
}
}