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项目简介
该项目可以分为三个模块：登录模块、主页面模块、信息储存模块。本系统完成了基本所需功能,界面清晰,操作简单又实用，基本满足了学校对学生信息的增添、查询、修改和删除等功能，且具有登录系统使该系统具有一定的安全性，大大减少了操作人员和用户的工作负担，提高了学生管理的工作效率和学校的信息化的水平。
功能介绍
该项目可以分为三个模块：登录模块、主页面模块、信息储存模块。登录模块实现系统的登录，且具有一键清除的功能；主页面也就是整个系统的核心，包括了对学生信息的增添、查询、修改和删除等功能，还有退出系统的功能；由于还没学习数据库，所以运用的是文本文件的输入和输出的方法来储存添加的学生信息。
功能模块
注意：memu.java文件中需提前新建一个txt文件并在代码中添加txt文件的路径
代码：
Enter.java
登录界面
package xuesheng;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
class LoginCheck{
private String name;
private String password;
public LoginCheck(String name,String password){
this.name=name;
this.password=password;
}
public boolean equals(){
if("root".equals(name)&&"123456".equals(password)){
return true;
}else{
return false;
}
}
};
class ActionHandle{
private JFrame frame=new JFrame("学生信息管理系统");
private JTextField name=new JTextField();//设置文本框
private JPasswordField pass=new JPasswordField();
private JLabel but1=new JLabel("用户名:");
private JLabel but2=new JLabel("密 码:");
private JButton but3=new JButton("登录");
private JButton but4=new JButton("重置");
public ActionHandle(){
but3.addActionListener(new ActionListener(){
public void actionPerformed(ActionEvent e){
if(e.getSource()==but3){
String sname=name.getText();
String spass=new String(pass.getPassword());
LoginCheck log=new LoginCheck(sname,spass);
if(log.equals()){
try {
new Menu();
} catch (Exception e1) {
e1.printStackTrace();
}
frame.setVisible(false);
}else{
JOptionPane.showMessageDialog(null, "登录失败，错误的用户名或密码！");
}
}
}
});
but4.addActionListener(
new ActionListener(){
public void actionPerformed(ActionEvent e){
if(e.getSource()==but4){
name.setText("");
pass.setText("");
}
}
});
frame.setLayout(null);
but1.setBounds(80, 40 , 80,30);
name.setBounds(140,42, 120, 25); //
but2.setBounds(80, 80 , 80,30);
pass.setBounds(140,82, 120, 25);
but3.setBounds(130, 150 , 60,30);
but4.setBounds(210, 150 , 60,30);
frame.setSize(400,330);
frame.setLocation(300, 200);
frame.add(but1);
frame.add(name);
frame.add(pass);
frame.add(but2);
frame.add(but3);
frame.add(but4);
frame.setVisible(true);
}
}
public class Enter{
public static void main(String[] args) {
new ActionHandle();
}
}
Menu.java
主界面
package xuesheng;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.util.Enumeration;
import java.util.Hashtable;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.swing.*;
public class Menu {
private JButton but1 = new JButton("增加数据"); // 按钮
private JButton but2 = new JButton("删除数据");
private JButton but3 = new JButton("修改数据");
private JButton but4 = new JButton("查看数据");
private JButton but0 = new JButton("退出系统");
private JButton but5 = new JButton("显示");
private JButton clear = new JButton("清空");
private JTextField number = new JTextField();// 文本框
private JTextField name = new JTextField();
private JTextField dor = new JTextField();
private JTextField address = new JTextField();
private JTextField sex = new JTextField();
private JTextField date = new JTextField();
private JTextField pol = new JTextField();
private JTextField phone = new JTextField();
private JTextArea show = new JTextArea(16, 30);
private JLabel lab1 = new JLabel("姓名:");// 标签
private JLabel lab2 = new JLabel("学院:");
private JLabel num = new JLabel("学号:");
private JLabel lab4 = new JLabel("性别:");
private JLabel lab5 = new JLabel("专业班级:");
private JLabel lab6 = new JLabel("出生日期:");
private JLabel lab7 = new JLabel("政治面貌:");
private JLabel lab8 = new JLabel("联系方式:");
// private JLabel lab3 = new JLabel("请输入内容，完成操作。");
private JFrame frame = new JFrame("信息管理系统"); // 框架
private JFrame frame1 = new JFrame("显示信息");
Hashtable<String, Person> has = new Hashtable<String, Person>();// 哈希表，加密，文件乱码
File file = new File("新建文件.txt");// 注意：新建一个文件
public Menu() {
if (!file.exists()) {
try {
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));// 把一个实例的对象以文件的形式保存到磁盘上。 out.writeObject(has);
out.close();
} catch (IOException e) {
}
}
but1.addActionListener(new ActionListener() {
// 增加，内部类//进行某项操作时触发功能
public void actionPerformed(ActionEvent e) {
//用于接收操作事件的侦听器接口
if (e.getSource() == but1) {
but3.setEnabled(false);//使but3这个按钮变灰不可点击了
String number1 = number.getText();
if (number1.length() == 12) {
try {
ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));//读回对象
has = (Hashtable) in.readObject(); in.close();
} catch (Exception e1) {
}
} else {
JOptionPane.showMessageDialog(null, "请输入12位数字的学号");//提示框显示
}
//
if (number1.length() == 12) {
if (has.containsKey(number1)) {
JOptionPane.showMessageDialog(null, "该生信息已存在，请到修改页面修改！");
} else {
String name1 = name.getText();
String dor1 = dor.getText();
String address1 = address.getText();
String sex1 = sex.getText();
String date1 = date.getText();
String pol1 = pol.getText();
String phone1 = phone.getText();
Person per = null;
per = new Person(number1, name1, dor1, address1, sex1, date1, pol1, phone1);
has.put(number1, per);// ???
try {
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));
out.writeObject(has);
out.close();
JOptionPane.showMessageDialog(null, "添加成功！");
} catch (Exception e1) {
}
}
}
}
}
});
clear.addActionListener(new ActionListener() {
// 清空
public void actionPerformed(ActionEvent e) {
if (e.getSource() == clear) {
//获得事件所作用的对象
number.setText(null);
dor.setText(null);
name.setText(null);
address.setText(null);
sex.setText(null);
date.setText(null);
pol.setText(null);
phone.setText(null);
}
}
});
but2.addActionListener(new ActionListener() {
// 删除
public void actionPerformed(ActionEvent e) {
if (e.getSource() == but2) {
but3.setEnabled(false);
String number1 = number.getText();
if (number1.length() == 12) {
try {
ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
has = (Hashtable) in.readObject();
in.close();
} catch (Exception e1) {
}
} else {
JOptionPane.showMessageDialog(null, "请输入12位数字的学号");
}
if (has.containsKey(number1)) {
has.remove(number1);
ObjectOutputStream out = null;
JOptionPane.showMessageDialog(null, "删除成功");
try {
out = new ObjectOutputStream(new FileOutputStream(file));
//out.writeObject(has);
out.close();
} catch (IOException ex) {
Logger.getLogger(Menu.class.getName()).log(Level.SEVERE, null, ex);//记录当前类可能发生的异常
}
} else {
JOptionPane.showMessageDialog(null, "学号不存在");
}
}
}
});
but3.addActionListener(new ActionListener() {
// 修改
public void actionPerformed(ActionEvent e) {
//String number2 = number.getText();
if (e.getSource() == but3) {
but3.setEnabled(false);
String number1 = number.getText();
String name1 = name.getText();
String dor1 = dor.getText();
String address1 = address.getText();
String sex1 = sex.getText();
String date1 = date.getText();
String pol1 = pol.getText();
String phone1 = phone.getText();
Person per = new Person(number1, name1, dor1, address1, sex1, date1, pol1, phone1);
has.put(number1, per);
if (number1.length() == 12) {
try {
ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
has = (Hashtable) in.readObject();
in.close();
} catch (Exception e1) {
}
JOptionPane.showMessageDialog(null, "修改成功");
try {
ObjectOutputStream out = new ObjectOutputStream(new FileOutputStream(file));
out.writeObject(has);
out.close();
} catch (Exception e1) {
}
}
}
}});
but4.addActionListener(new ActionListener() {
// 查看
public void actionPerformed(ActionEvent e) {
if (e.getSource() == but4) {
but3.setEnabled(false);
String number1 = number.getText();
if (number1.length() == 12) {
if (has.containsKey(number1)) {
try {
ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
has = (Hashtable) in.readObject();
in.close();
} catch (Exception e1) {
}
Person per = (Person) has.get(number1);
name.setText(per.getName());
dor.setText(per.getDor());
address.setText(per.getAddress());
sex.setText(per.getSex());
date.setText(per.getDate());
pol.setText(per.getPol());
phone.setText(per.getPhone());
but3.setEnabled(true);
} else {
JOptionPane.showMessageDialog(null, "学号不存在");
}
} else {
JOptionPane.showMessageDialog(null, "请输入12位数字的学号");
}
}
}
});
but5.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getSource() == but5) {
frame1.setVisible(true);
try {
ObjectInputStream in = new ObjectInputStream(new FileInputStream(file));
has = (Hashtable) in.readObject();
in.close();
} catch (Exception ee) {
}
if (has.isEmpty()) {
show.append("目前还没有学生的信息记录！\n");
// append(s:String)向文本域的文本追加字符串，简单的说就像system.out.println()
} else {
for (Enumeration enu = has.elements(); enu.hasMoreElements();) {
//存入内存的内容如果不经过遍历是显示不出来的
Person per = (Person) enu.nextElement();
String str = " <学号>：" + per.getNum() + "\n" + " <姓名>：" + per.getName() + "\n" + " <学院>："
+ per.getDor() + "\n" + " <性别>：" + per.getAddress() + "\n" + " <专业班级>："
+ per.getSex() + "\n" + "<出生日期>：" + per.getDate() + "\n" + " <政治面貌>："
+ per.getPol() + "\n" + " <电话>：" + per.getPhone() + "\n" + "\n";
show.append(str);
}
String str2 = "------------------------------结束---------------------------------------------------"
+ "\n";
show.append(str2);
}
}
}
});
but0.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
if (e.getSource() == but0) {
frame.setVisible(false);
new ActionHandle();
}
}
});
frame.setLayout(null);
but1.setBounds(30, 35, 90, 25);
but2.setBounds(30, 75, 90, 25);
but3.setBounds(30, 115, 90, 25);
but4.setBounds(30, 155, 90, 25);
but0.setBounds(240, 430, 100, 25); // setBounds(x,y,width,height);
num.setBounds(150, 30, 70, 25);
lab1.setBounds(150, 65, 70, 25);
lab2.setBounds(150, 100, 70, 25);//
lab4.setBounds(150, 135, 70, 25);
lab5.setBounds(150, 170, 70, 25);
lab6.setBounds(150, 205, 70, 25);
lab7.setBounds(150, 240, 70, 25);
lab8.setBounds(150, 275, 70, 25);
number.setBounds(230, 30, 90, 25);
name.setBounds(230, 65, 90, 25);
dor.setBounds(230, 100, 90, 25);
address.setBounds(230, 135, 90, 25);
sex.setBounds(230, 170, 90, 25);
date.setBounds(230, 205, 90, 25);
pol.setBounds(230, 240, 90, 25);
phone.setBounds(230, 275, 90, 25);
// lab3.setBounds(130, 390, 250, 25);
clear.setBounds(250, 310, 60, 25);
but5.setBounds(150, 310, 60, 25);
frame.add(lab1);
frame.add(lab2);
//frame.add(lab3);
frame.add(lab4);
frame.add(lab5);
frame.add(lab6);
frame.add(lab7);
frame.add(lab8);
frame.add(num);
frame.add(number);
frame.add(name);
frame.add(dor);
frame.add(address);
frame.add(sex);
frame.add(date);
frame.add(pol);
frame.add(phone);
frame.add(clear);
frame.add(but1);
frame.add(but2);
frame.add(but3);
frame.add(but4);
frame.add(but0);
JScrollPane scroll = new JScrollPane(show);
frame1.add(scroll,BorderLayout.CENTER);
frame.add(but5);
frame.setSize(400, 500); // 页面大小
frame1.setBounds(200, 200, 400, 300);
frame.setLocation(300, 200);
frame.setVisible(true);
frame1.setVisible(false);
}
}
Person.java
个人信息：
package xuesheng;
import java.io.Serializable;
public class Person implements Serializable {
//使用Serializable类，可以使对象被序列化，用于持久化（保存）对象。
private String num;
private String name;
private String dor;
private String address;
private String sex;
private String date;
private String pol;
private String phone;
//public Person(){}
public Person(String num,String name,String dor,String address,String sex,String date,String pol,String phone ){
this.num=num;
this.name=name;
this.dor=dor;
this.address=address;
this.sex=sex;
this.date=date;
this.pol=pol;
this.phone=phone;
}
public void setNum(String num){
this.num=num;
}
public String getNum(){
return num;
}
public void setName(String name){
this.name=name;
}
public String getName(){
return name;
}
public void setDor(String dor){
this.dor=dor;
}
public String getDor(){
return dor;
}
public void setAddress(String address){
this.address=address;
}
public String getAddress(){
return address;
}
public void setSex(String sex){
this.sex=sex;
}
public String getSex(){
return sex;
}
public void setDate(String date){
this.date=date;
}
public String getDate(){
return date;
}
public void setPol(String pol){
this.pol=pol;
}
public String getPol(){
return pol;
}
public void setPhone(String phone){
this.phone=phone;
}
public String getPhone(){
return phone;
}
}
部分效果图：
登录账号：root
密码：123456
代码中可自行更改
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