这里给大家说一个利用io流完成的请假系统，上篇文章有展示只是单纯的请假界面，感兴趣的朋友可以去博客看下。这里主要简单实现了学生请假和学生查看请假记录，辅导员审核请假信息和老师以及辅导员查看请假信息。下个文章会给大家展示利用数据库实现的请假系统，代码会比现在这个的复杂一点，当然功能也会相对的完善很多。
下面展示代码，主要有五个类，
第一个类，登录界面
/**
* 登陆主界面
*/
import java.awt.Color;
//import java.awt.FlowLayout;
import java.awt.Graphics;
//import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
//import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import java.awt.*;
//import java.io.File;
//import java.io.IOException;
import javax.swing.*;
public class Login extends JFrame implements ActionListener {
//private static final String JPanel = null;
JPanel jp=new JPanel();
JTextField fieldAccount = new JTextField(1000);
JPasswordField fieldPassword = new JPasswordField(1000);
JButton jb1 = new JButton("登 录");
JButton jb2=new JButton("退出");
JLabel label = new JLabel(" 帐 号 ");
JLabel label1 = new JLabel(" 密 码 ");
JLabel label2=new JLabel("请假系统登录界面");
JRadioButton jrb1=new JRadioButton("学生");
JRadioButton jrb2=new JRadioButton("教师");
JRadioButton jrb3=new JRadioButton("辅导员");
ButtonGroup bg=new ButtonGroup();
// public void paint(Graphics g){
// super.paint(g);
// ImageIcon imge=new ImageIcon("src/12.jpg");
// imge.setImage(imge.getImage().getScaledInstance(this.getWidth(),this.getHeight(),Image.SCALE_AREA_AVERAGING));
// g.drawImage(imge.getImage(),10,10,null);
//
// }
//
public Login(){
this.setTitle("用户登录界面.....");
this.setBounds(550, 200, 700, 500);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLayout(null);
this.setVisible(true);
jb2.addActionListener(this);
jb1.setBackground(new Color(233,240,247));
jb1.setForeground(new Color(30,57,91));
jb2.setBackground(new Color(233,240,247));
jb2.setForeground(new Color(30,57,91));
JLabel label = new JLabel("账号");
label.setOpaque(false);
label.setBounds(150,140,100,50);
//label.setForeground(Color.white);
label.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jb1.setForeground(Color.white);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jb2.setForeground(Color.white);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
// fieldAccount.setOpaque(false);
fieldAccount.setBorder(null);
// fieldPassword.setOpaque(false);
// fieldPassword.setBorder(null);
jb1.setOpaque(false);
jb2.setOpaque(false);
jb1.setBorder(null);
jb2.setBorder(null);
//label.setBackground(Color.red);
//label.setForeground(Color.red);
this.add(label);
fieldAccount.setBounds(250, 140, 300, 50);
this.add(fieldAccount);
label1 = new JLabel(" 密 码 ");
label1.setAlignmentX(JLabel.CENTER_ALIGNMENT);
//label1.setForeground(Color.white);
label1.setFont(new Font("微软雅黑",Font.PLAIN,18));
//label1.setForeground(Color.red);
label1.setBounds(145, 238, 100, 50);
this.add(label1);
fieldPassword.setBounds(250, 240, 300, 50);
fieldPassword.setBorder(null);
this.add(fieldPassword);
this.add(jb1);
this.add(jb2);
jb1.setBounds(250,350,100,50);
jb2.setBounds(450,350,100,50);
jb1.addActionListener(this);
label2.setBounds(300,50,200,50);
label2.setFont(new Font("微软雅黑",Font.PLAIN,18));
this.add(label2);
bg.add(jrb1);
bg.add(jrb2);
bg.add(jrb3);
jrb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jrb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jrb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jrb1.setBounds(250,320,70,30);
jrb2.setBounds(320,320,70,30);
jrb3.setBounds(390,320,100,30);
this.add(jrb1);
this.add(jrb2);
this.add(jrb3);
// pwd 监听enter键
fieldPassword.addActionListener(this);
fieldAccount.addActionListener(this);
jrb1.addActionListener(this);
jrb2.addActionListener(this);
jrb3.addActionListener(this);
jb1.addActionListener(this);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
if( e.getSource().equals(jb2))
{
this.dispose();
// System.exit( 0 );
}
if(e.getSource() == fieldPassword|| e.getSource() == jb1){
// 获取帐号
String account = fieldAccount.getText();
// 获取密码
String pwd = new String(fieldPassword.getPassword());
if (account.compareTo("123") == 0 && pwd.compareTo("123")==0 ){
if(jrb1.isSelected()){
JOptionPane.showMessageDialog(null, "登录成功");
this.dispose();
System s=new System();
}
else if(!jrb1.isSelected( )){
JOptionPane.showMessageDialog(null, "对不起，你不是学生用户");
}
}
else if (account.compareTo("1234") == 0 && pwd.compareTo("1234")==0 ){
if(jrb2.isSelected()){
JOptionPane.showMessageDialog(null, "登录成功");
this.dispose();
TeacherSystem TS=new TeacherSystem();
}
else JOptionPane.showMessageDialog(null, "对不起，你不是教师用户");
}
else if(account.equals("12345") && pwd.equals("12345")){
if(jrb3.isSelected()){
JOptionPane.showMessageDialog(null, "登录成功");
this.dispose();
CounsellorSystem CS=new CounsellorSystem();
}
else JOptionPane.showMessageDialog(null, "对不起，你不是辅导员用户");
}
if( e.getSource().equals(jb1))
{
fieldAccount.setText("账号或密码错误");
}
// if(account.compareTo("123")!=0||account.compareTo("1234")!=0 ){
//
// if(pwd.compareTo("123")!=0||pwd.compareTo("1234")!=0){
// fieldAccount.setText("账号或密码错误");
// }
//
//
// }
}
// if(account.compareTo("123")!=0&&pwd.compareTo("123")!=0){
// JOptionPane.showMessageDialog(null, "登录失败" + "\n" + "id:123" + "\n" + "password:123");
// }
//else {JOptionPane.showMessageDialog(null, "登录失败" + "\n" + "id:123" + "\n" + "password:123");
// }
}
public static void main(String[] args) {
// TODO Auto-generated method stub
new Login();
}
}
第二个类，学生界面
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
/**
* 学生请假系统模块
*/
public class System extends JFrame implements ActionListener{
JFrame frame;
JButton jb1=new JButton("学生申请请假");
JButton jb2=new JButton("学生申请销假");
JButton jb3=new JButton("查询请假记录");
JButton jb4=new JButton("提交");
JButton jb5=new JButton("退出");
static JTextArea jt;
static JTextField xmg;
static JTextField xhg;
static JTextField zyg;
static JTextField lxg;
static JTextField ksrqg;
static JTextField jsrqg;
public static void main(String[] args) {
// TODO Auto-generated method stub
System a=new System(); }
public System(){
this.setTitle("学生请假系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
// JButton jb1=new JButton("学生申请请假");
// JButton jb2=new JButton("学生申请销假");
// JButton jb3=new JButton("查询请假记录");
// JButton jb4=new JButton("提交");
// JButton jb5=new JButton("退出");
// jb1.setBorder(null);
// jb2.setBorder(null);
// jb3.setBorder(null);
// jb4.setBorder(null);
// jb5.setBorder(null);
//
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb4.setOpaque(false);
jb4.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb5.setOpaque(false);
jb5.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb4.setBackground(new Color(233,240,247));
jb5.setBackground(new Color(233,240,247));
JLabel jl=new JLabel("请假申请");
JLabel xm=new JLabel("姓名");
JLabel xh=new JLabel("学号");
JLabel zy=new JLabel("专业");
JLabel lx=new JLabel("联系");
JLabel ksrq=new JLabel("开始日期");
JLabel jsrq=new JLabel("结束日期");
JLabel qjsy=new JLabel("请假事由");
jl.setFont(new Font("微软雅黑",Font.PLAIN,18));
xm.setFont(new Font("微软雅黑",Font.PLAIN,18));
xh.setFont(new Font("微软雅黑",Font.PLAIN,18));
zy.setFont(new Font("微软雅黑",Font.PLAIN,18));
lx.setFont(new Font("微软雅黑",Font.PLAIN,18));
ksrq.setFont(new Font("微软雅黑",Font.PLAIN,18));
jsrq.setFont(new Font("微软雅黑",Font.PLAIN,18));
qjsy.setFont(new Font("微软雅黑",Font.PLAIN,18));
xmg=new JTextField();
xhg=new JTextField();
zyg=new JTextField();
lxg=new JTextField();
ksrqg=new JTextField();
jsrqg=new JTextField();
//JTextField qjsyg=new JTextField();
jt=new JTextArea();
xmg.setFont(new Font("微软雅黑",Font.PLAIN,18));
xhg.setFont(new Font("微软雅黑",Font.PLAIN,18));
zyg.setFont(new Font("微软雅黑",Font.PLAIN,18));
lxg.setFont(new Font("微软雅黑",Font.PLAIN,18));
ksrqg.setFont(new Font("微软雅黑",Font.PLAIN,18));
jsrqg.setFont(new Font("微软雅黑",Font.PLAIN,18));
jt.setFont(new Font("微软雅黑",Font.PLAIN,18));
xmg.setBorder(null);
xhg.setBorder(null);
zyg.setBorder(null);
lxg.setBorder(null);
ksrqg.setBorder(null);
jsrqg.setBorder(null);
// qjsyg.setBorder(null);
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jl.setBounds(300,51,620,50);
xm.setBounds(30,90,60,50);
xmg.setBounds(68,102,110,30);
xh.setBounds(190,90,50,50);
xhg.setBounds(227,102,110,30);
zy.setBounds(350,90,50,50);
zyg.setBounds(389,102,110,30);
lx.setBounds(517,90,50,50);
lxg.setBounds(556,102,110,30);
ksrq.setBounds(30,135,90,50);
ksrqg.setBounds(105,145,170,30);
jsrq.setBounds(300,135,90,50);
jsrqg.setBounds(375,145,170,30);
qjsy.setBounds(30,210,90,100);
//jt.setBounds(30,210,90,100);
jt.setBounds(105,200,555,130);
jb4.setBounds(30,380,100,50);
jb5.setBounds(140,380,100,50);
//this.add(upper);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.add(jl);
this.add(xm);
this.add(xmg);
this.add(zy);
this.add(zyg);
this.add(xh);
this.add(xhg);
this.add(lx);
this.add(lxg);
this.add(ksrq);
this.add(ksrqg);
this.add(jsrq);
this.add(jsrqg);
this.add(qjsy);
//this.add(qjsyg);
this.add(jt);
this.add(jb4);
this.add(jb5);
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
jb4.addActionListener(this);
jb5.addActionListener(this);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
// String input = e.getActionCommand();
if( e.getSource().equals(jb5))
{
this.dispose();
// System.exit( 0 );
}
// if(input.equals("退出")){
// this.dispose();
// }
if(e.getSource().equals(jb4)){
File f = new File("d:\\student1.txt");
//字节输出流
FileOutputStream fos=null;
try {
fos = new FileOutputStream(f);
String s="姓名:"+" "+xmg.getText()+"\r\n";
String s1="学号:"+" "+xhg.getText()+"\r\n";
String s2="专业:"+" "+zyg.getText()+"\r\n";
String s3="联系:"+" "+lxg.getText()+"\r\n";
String s4="开始:"+" "+ksrqg.getText()+"\r\n";
String s5="结束:"+" "+jsrqg.getText()+"\r\n";
String s6 = "请假事由:"+" "+jt.getText()+"\r\n";//换行：/r/n
String s7="请假信息已提交,等待审核通过";
//定义字节数组
byte []btyes = new byte[10024];
fos.write(s.getBytes());
fos.write(s1.getBytes());
fos.write(s2.getBytes());
fos.write(s3.getBytes());
fos.write(s4.getBytes());
fos.write(s5.getBytes());
fos.write(s6.getBytes());
fos.write(s7.getBytes());
} catch (Exception e1) {
e1.printStackTrace();
// TODO: handle exception
}finally{
try {
fos.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
JOptionPane.showMessageDialog(null, "提交成功");
xmg.setText("");
xhg.setText("");
zyg.setText("");
lxg.setText("");
ksrqg.setText("");
jsrqg.setText("");
jt.setText("");
}
Object[] options={"好啊","去一边"};
if(e.getSource().equals(jb3)){
StudentLeaveRecord SLR=new StudentLeaveRecord();
this.dispose();
// xmg.setText("");
// xhg.setText("");
// zyg.setText("");
// lxg.setText("");
// ksrqg.setText("");
// jsrqg.setText("");
// jt.setText("");
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb1)){
JOptionPane.showMessageDialog(null, "你已处于当前界面");
} }
}
第三个类，学生查看请假信息
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import javax.swing.*;
public class StudentLeaveRecord extends JFrame implements ActionListener{
/**
* 学生查询请假记录模块
*/
JButton jb1=new JButton("学生申请请假");
JButton jb2=new JButton("学生申请销假");
JButton jb3=new JButton("查询请假记录");
JButton jb4=new JButton("退出");
JTextArea jt=new JTextArea();
public static void main(String[] args) {
// TODO Auto-generated method stub
//
// FileReader fr=null;
// //写入文件（输出流）
// //FileWriter fw=null;
//
// try {
// //创建fir对象
// fr = new FileReader("d:\\g1.txt");
//
//
// int n=0;//实际读取的字符数
// //读入到内存
// char c[]=new char[10024];
// while((n=fr.read(c))!=-1){
// //System.out.println(c);
// String s= new String(c,0,n);
// System.out.println(s);
// }
//
//
// } catch (Exception e) {
// e.printStackTrace();
// // TODO: handle exception
// }
StudentLeaveRecord SLR=new StudentLeaveRecord();
}
public StudentLeaveRecord(){
this.setTitle("学生请假系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
jt.setEditable(false);//设计文本框不能外部输入
jt.setForeground(Color.BLACK);
jt.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb4.setOpaque(false);
jb4.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb4.setBackground(new Color(233,240,247));
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jb4.setBounds(457, 400, 223, 50);
jt.setBounds(30,80,620,300);
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
jb4.addActionListener(this);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.add(jb4);
this.add(jt);
this.setVisible(true);
FileReader fr=null;
//写入文件（输出流）
//FileWriter fw=null;
try {
//创建fir对象
fr = new FileReader("d:\\student1.txt");
int n=0;//实际读取的字符数
//读入到内存
char c[]=new char[10024];
while((n=fr.read(c))!=-1){
//System.out.println(c);
String s= new String(c,0,n);
jt.setText(s);
}
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jb4)){
this.dispose();
}
//Object[] options={"好啊","去一边"};
if(e.getSource().equals(jb1)){
// int m=JOptionPane.showOptionDialog(null, "我可以约你吗","标题",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE,null,options,options[0]);
System a=new System();
this.dispose();
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb3)){
JOptionPane.showMessageDialog(null, "你已处于当前界面");
}
}
}
第四个类，辅导员审核请假信息，
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class CounsellorSystem extends JFrame implements ActionListener{
/**
*辅导员管理请假信息系统
*/
JButton jb1=new JButton("审核请假信息");
JButton jb2=new JButton("审核销假信息");
JButton jb3=new JButton("学生请假记录");
JButton jb4=new JButton("退出");
public static void main(String[] args) {
// TODO Auto-generated method stub
CounsellorSystem CS=new CounsellorSystem();
}
public CounsellorSystem(){
this.setTitle("辅导员管理请假信息系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb4.setOpaque(false);
jb4.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb4.setBackground(new Color(233,240,247));
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jb4.setBounds(457, 400, 223, 50);
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
jb4.addActionListener(this);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.add(jb4);
this.setVisible(true);
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jb4)){
this.dispose();
}
if(e.getSource().equals(jb3)){
CounsellorLookRecord clr=new CounsellorLookRecord();
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb1)){
//JOptionPane.showMessageDialog(null, "你已处于当前界面");
Set s1=new Set();
this.dispose();
}
}
}
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import javax.swing.*;
public class Set extends JFrame implements ActionListener{
/**
* 辅导员查看学生请假信息模块
*/
JButton jb1=new JButton("审核请假信息");
JButton jb2=new JButton("审核销假信息");
JButton jb3=new JButton("学生请假记录");
JButton jb4=new JButton("通过审核");
JButton jb6=new JButton("审核不通过");
JButton jb5=new JButton("退出");
JTextArea jt=new JTextArea();
public static void main(String[] args) {
// TODO Auto-generated method stub
//
// FileReader fr=null;
// //写入文件（输出流）
// //FileWriter fw=null;
//
// try {
// //创建fir对象
// fr = new FileReader("d:\\g1.txt");
//
//
// int n=0;//实际读取的字符数
// //读入到内存
// char c[]=new char[10024];
// while((n=fr.read(c))!=-1){
// //System.out.println(c);
// String s= new String(c,0,n);
// System.out.println(s);
// }
//
//
// } catch (Exception e) {
// e.printStackTrace();
// // TODO: handle exception
// }
Set s1=new Set();
}
public Set(){
this.setTitle("辅导员管理请假信息系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb4.setOpaque(false);
jb4.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb5.setOpaque(false);
jb5.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb6.setOpaque(false);
jb6.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb4.setBackground(new Color(233,240,247));
jb5.setBackground(new Color(233,240,247));
jb6.setBackground(new Color(233,240,247));
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jb4.setBounds(230, 400, 223, 50);
jb5.setBounds(450, 400, 223, 50);
jb6.setBounds(10, 400, 223, 50);
jt.setBounds(30,80,620,300);
jt.setEditable(false);//设计文本框不能外部输入
jt.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
jb4.addActionListener(this);
jb5.addActionListener(this);
jb6.addActionListener(this);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.add(jb4);
this.add(jb5);
this.add(jb6);
this.add(jt);
this.setVisible(true);
FileReader fr=null;
//写入文件（输出流）
//FileWriter fw=null;
try {
//创建fir对象
fr = new FileReader("d:\\student1.txt");
int n=0;//实际读取的字符数
//读入到内存
char c[]=new char[10024];
while((n=fr.read(c))!=-1){
//System.out.println(c);
String s= new String(c,0,n);
jt.setText(s);
}
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jb5)){
this.dispose();
}
Object[] options={"好啊","去一边"};
if(e.getSource().equals(jb3)){
CounsellorLookRecord clr=new CounsellorLookRecord();
this.dispose();
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb1)){
JOptionPane.showMessageDialog(null, "你已处于当前界面");
}
if(e.getSource().equals(jb4)){
JOptionPane.showMessageDialog(null, "审核完毕");
File f = new File("d:\\student1.txt");
File f1 = new File("d:\\student2.txt");
//字节输出流
FileOutputStream fos=null;
FileOutputStream fos1=null;
try {
fos = new FileOutputStream(f);
fos1 = new FileOutputStream(f1);
String s1 = jt.getText()+"\r\n";//换行：/r/n
String s2 = "请假状态:"+" "+"已通过审核";
String s3=jt.getText()+"\r\n";
//定义字节数组
byte []btyes = new byte[10024];
fos.write(s1.getBytes());
fos.write(s2.getBytes());
fos1.write(s3.getBytes());
fos1.write(s2.getBytes());
} catch (Exception e1) {
e1.printStackTrace();
// TODO: handle exception
}finally{
try {
fos.close();
fos1.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
}
// JOptionPane.showMessageDialog(null, "提交成功");
jt.setText("");
}
if(e.getSource().equals(jb6)){
JOptionPane.showMessageDialog(null, "请假信息将撤回");
File f = new File("d:\\student1.txt");
//字节输出流
FileOutputStream fos=null;
try {
fos = new FileOutputStream(f);
String s1 = jt.getText()+"\r\n";//换行：/r/n
String s2 = "请假状态:"+" "+"审核不通过，请假失败";
//定义字节数组
byte []btyes = new byte[10024];
fos.write(s1.getBytes());
fos.write(s2.getBytes());
} catch (Exception e1) {
e1.printStackTrace();
// TODO: handle exception
}finally{
try {
fos.close();
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
jt.setText("");
}}}
}
第五个类，辅导员查看学生请假信息，
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Enumeration;
import javax.swing.*;
import javax.swing.border.Border;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableColumn;
/**
*辅导员管理请假信息系统
*/
public class CounsellorLookRecord extends JFrame implements ActionListener{
JButton jb1=new JButton("审核请假信息");
JButton jb2=new JButton("审核销假信息");
JButton jb3=new JButton("学生请假记录");
JButton jb4=new JButton("退出");
JButton jb5=new JButton("查询");
JTextField jt=new JTextField();
JLabel jl=new JLabel("学号");
String[] columnNames={"姓名","学号","专业","联系","开始日期","结束日期","请假状态","请假事由"};//定义表格列名数
String[][] tableValues={{"陈锦贤11111111111111111","182017331","计算机","15119747306","2019-9-23-17:55","2019-9-23-19:14","通过","因为想呆在宿舍2222222222222222222222"},{"21","22","23","24","25","26","27","28"},{"","","","","","","",""},
{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},
{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},
{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""},{"","","","","","","",""}};//定义表格数据数组
JTable table=new JTable(tableValues,columnNames);//创建指定列名和数据的表格
public static void main(String[] args) {
// TODO Auto-generated method stub
CounsellorLookRecord clr=new CounsellorLookRecord();
}
public CounsellorLookRecord(){
this.setTitle("辅导员查看请假信息系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
//JTable table=new JTable(tableValues,columnNames);//创建指定列名和数据的表格
JScrollPane scrollpane=new JScrollPane(table);//创建显示表格的滚动面板
//FitTableColumns(table);
table.setRowHeight(40);
table.setDefaultRenderer(Object.class, new TableCellTextAreaRenderer());
//JTableAUTO_RESIZE_ALL_COLUMNS;
//table.setAutoResizeMode(JTable.AUTO_RESIZE_ALL_COLUMNS);
//JTable.AUTO_RESIZE_OFF
//table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
//jb1.setBorder(null);
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jb2.setBorder(null);
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jb3.setBorder(null);
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jb4.setBorder(null);
jb4.setOpaque(false);
jb4.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jb5.setBorder(null);
jb5.setOpaque(false);
jb5.setFont(new Font("微软雅黑",Font.PLAIN,18));
jl.setFont(new Font("微软雅黑",Font.PLAIN,18));
//jl.setBorder(null);
jl.setOpaque(false);
scrollpane.setOpaque(false);
jl.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb4.setBackground(new Color(233,240,247));
jb5.setBackground(new Color(233,240,247));
jl.setBackground(new Color(233,240,247));
scrollpane.setBackground(new Color(233,240,247));
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jb4.setBounds(457, 400, 223, 50);
jb5.setBounds(5, 55, 123, 25);
jl.setBounds(150, 55, 123, 25);
jt.setBounds(220, 55, 123, 25);
scrollpane.setBounds(5, 92, 675, 300);
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
jb4.addActionListener(this);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.add(jb4);
this.add(jb5);
this.add(jl);
this.add(jt);
this.add(scrollpane);
this.setVisible(true);
}
public static void FitTableColumns(JTable myTable) {
JTableHeader header = myTable.getTableHeader();
int rowCount = myTable.getRowCount();
Enumeration columns = myTable.getColumnModel().getColumns();
while (columns.hasMoreElements()) {
TableColumn column = (TableColumn) columns.nextElement();
int col = header.getColumnModel().getColumnIndex(column.getIdentifier());
int width = (int) myTable.getTableHeader().getDefaultRenderer()
.getTableCellRendererComponent(myTable, column.getIdentifier(), false, false, -1, col)
.getPreferredSize().getWidth();
for (int row = 0; row < rowCount; row++) {
int preferedWidth = (int) myTable.getCellRenderer(row, col)
.getTableCellRendererComponent(myTable, myTable.getValueAt(row, col), false, false, row, col)
.getPreferredSize().getWidth();
width = Math.max(width, preferedWidth);
}
header.setResizingColumn(column);
column.setWidth(width + myTable.getIntercellSpacing().width + 10);
}
}
public boolean isCellEditable(int rowlndex ,int columlndex){
return false;
}
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jb4)){
this.dispose();
}
if(e.getSource().equals(jb3)){
JOptionPane.showMessageDialog(null, "你已处于当前界面");
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb1)){
//JOptionPane.showMessageDialog(null, "你已处于当前界面");
Set s1=new Set();
this.dispose();
}
}
}
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.table.TableCellRenderer;
/*
*
* 表格高度设置
*/
public class TableCellTextAreaRenderer extends JTextArea implements TableCellRenderer {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
public TableCellTextAreaRenderer() {
setLineWrap(true);
setWrapStyleWord(true);
}
public Component getTableCellRendererComponent(JTable table, Object value,
boolean isSelected, boolean hasFocus, int row, int column) {
// 计算当下行的最佳高度
int maxPreferredHeight = 30;
for (int i = 0; i < table.getColumnCount(); i++) {
setText("" + table.getValueAt(row, i));
setSize(table.getColumnModel().getColumn(column).getWidth(), 0);
maxPreferredHeight = Math.max(maxPreferredHeight, getPreferredSize().height);
}
if (table.getRowHeight(row) != maxPreferredHeight) {// 少了这行则处理器瞎忙
table.setRowHeight(row, maxPreferredHeight); }
if(isSelected)
{
this.setBackground(table.getSelectionBackground());
}
else
{
this.setBackground(table.getBackground());
}
setText(value == null ? "" : value.toString());
return this;
}
}
第六个，老师查看学生请假信息
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
public class TeacherSystem extends JFrame implements ActionListener{
/**
* 教师查看学生请假信息系统模块
*/
JButton jb1=new JButton("学生请假信息");
JButton jb2=new JButton("学生销假信息");
JButton jb3=new JButton("退出");
public static void main(String[] args) {
// TODO Auto-generated method stub
TeacherSystem TS=new TeacherSystem();
}
public TeacherSystem(){
this.setTitle("教师查看学生请假信息系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.setVisible(true);
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jb3)){
this.dispose();
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb1)){
TeacherLookRecord TLR=new TeacherLookRecord();
this.dispose();
}
}
}
import java.awt.Color;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.*;
import javax.swing.*;
public class TeacherLookRecord extends JFrame implements ActionListener{
/**
* 教师查看学生请假信息系统模块
*/
JButton jb1=new JButton("学生请假信息");
JButton jb2=new JButton("学生销假信息");
JButton jb3=new JButton("退出");
JTextArea jt=new JTextArea();
public static void main(String[] args) {
// TODO Auto-generated method stub
TeacherLookRecord TLR=new TeacherLookRecord();
}
public TeacherLookRecord(){
this.setTitle("教师查看学生请假信息系统");
this.setLocation(550,200);
this.setSize(700,500);
this.setDefaultCloseOperation(EXIT_ON_CLOSE);
this.setLayout(null);
jb1.setOpaque(false);
jb1.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb2.setOpaque(false);
jb2.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb3.setOpaque(false);
jb3.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.setBackground(new Color(233,240,247));
jb2.setBackground(new Color(233,240,247));
jb3.setBackground(new Color(233,240,247));
jb1.setBounds(5, 0, 233, 50);
jb2.setBounds(236, 0, 223, 50);
jb3.setBounds(457, 0, 223, 50);
jt.setBounds(30,80,620,300);
jt.setEditable(false);//设计文本框不能外部输入
jt.setFont(new Font("微软雅黑",Font.PLAIN,18));
jb1.addActionListener(this);
jb2.addActionListener(this);
jb3.addActionListener(this);
this.add(jb1);
this.add(jb2);
this.add(jb3);
this.add(jt);
this.setVisible(true);
FileReader fr=null;
//写入文件（输出流）
//FileWriter fw=null;
try {
//创建fir对象
fr = new FileReader("d:\\student2.txt");
int n=0;//实际读取的字符数
//读入到内存
char c[]=new char[10024];
while((n=fr.read(c))!=-1){
//System.out.println(c);
String s= new String(c,0,n);
jt.setText(s);
}
} catch (Exception e) {
e.printStackTrace();
// TODO: handle exception
}
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
if(e.getSource().equals(jb3)){
this.dispose();
}
if(e.getSource().equals(jb2)){
JOptionPane.showMessageDialog(null, "对不起，该功能未开通");
}
if(e.getSource().equals(jb1)){
JOptionPane.showMessageDialog(null, "你已处于当前界面");
}
}
}
关注我可以查看下个有关数据库的请假系统哦。
带数据库的请假系统链接 https://blog.youkuaiyun.com/qq_44716544/article/details/109268640?utm_source=app
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