Java面向对象与多线程综合实验（四）之GUI设计
了解Java图形界面程序的基本结构；掌握Java布局管理和常用组件的使用；掌握Java事件处理机制。
实验内容
编写程序，将前面课程所编写的档案管理系统改编为图形用户界面。要求程序界面选用合适的布局，综合使用菜单、按钮、文本框、密码框、下拉列表、文件对话框等组件，实现良好的人机接口。
本次代码沿用第三次中的User.java Administrator.java Operator.java Browser.java DataProcessing.java和Doc.java
所以，在此仅对新的文件进行整理和发布。
-
WinMain.java
需要运行的主程序
public class WinMain {
public static void main(String args[]) {
LoginWindow window=new LoginWindow();
window.loginFrame();
}
}
-
LoginWindow.java
登录窗口界面
import java.awt.Font;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import java.sql.SQLException;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTabbedPane;
import javax.swing.JTextField;
@SuppressWarnings("serial")
public class LoginWindow extends JFrame{
JTabbedPane tabbedPane;
public void loginFrame() {
JFrame frame=new JFrame();
frame.setTitle("系统登录");
frame.setSize(380,300);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
frame.setLayout(null);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JLabel L1=new JLabel("账号:");
JTextField te1=new JTextField(25);
JLabel L2=new JLabel("密码:");
JPasswordField te2=new JPasswordField(25);
te2.setEchoChar('*');
L1.setFont(new Font("黑体",Font.PLAIN,18));
L1.setSize(50,30);
L1.setBounds(5+30,50,50,30);
te1.setFont(new Font("黑体",Font.PLAIN,18));
te1.setSize(250,30);
te1.setBounds(5+80,50,250,30);
L2.setFont(new Font("黑体",Font.PLAIN,18));
L2.setSize(50,30);
L2.setBounds(5+30,100,50,30);
te2.setFont(new Font("黑体",Font.PLAIN,18));
te2.setSize(250,30);
te2.setBounds(5+80,100,250,30);
frame.add(L1);
frame.add(te1);
frame.add(L2);
frame.add(te2);
JButton B1=new JButton("登录");
JButton B2=new JButton("退出");
B1.setSize(100,50);
B1.setBounds((380-100-5)/2-60,(300-50-30)/2+50,100,50);
B2.setSize(100,50);
B2.setBounds((380-100-5)/2+60,(300-50-30)/2+50,100,50);
frame.add(B1);
frame.add(B2);
B1.addActionListener(new ButtonHandler(frame,te1,te2));
B2.addActionListener(new ButtonHandler(frame));
frame.setVisible(true);
}
public class ButtonHandler implements ActionListener{
public JTextField te1=new JTextField();
public JPasswordField te2=new JPasswordField();
public JFrame frame=new JFrame();
ButtonHandler(JFrame frame){
this.frame=frame;
}
ButtonHandler(JFrame frame,JTextField te1,JPasswordField te2) {
this.frame=frame;
this.te1=te1;
this.te2=te2;
}
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="登录") {
String name=te1.getText();
String password=String.valueOf(te2.getPassword());
try {
if(DataProcessing.searchUser(name)!=null) {
if(DataProcessing.search(name ,password)!=null) {
frame.dispose();
MenuWindow menuWindow=new MenuWindow();
menuWindow.showMenu(name);
addWindowListener(new WindowAdapter() {
@SuppressWarnings("unused")
public void WindowClosing(WindowEvent e2) {
DataProcessing.disconnectFromDatabase();
}
});
}
else {
JOptionPane.showMessageDialog(null, "密码错误", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
}
else {
JOptionPane.showMessageDialog(null, "账号不存在", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
} catch (HeadlessException e1) {
e1.printStackTrace();
} catch (SQLException e1) {
e1.printStackTrace();
}
}
else {
frame.dispose();
}
}
}
}
-
MenuWindow.java
菜单界面
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.SQLException;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
public class MenuWindow {
public void showMenu(String name) {
JFrame frame=new JFrame();
frame.setTitle("菜单界面");
frame.setSize(1600,1200);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
frame.setLayout(null);
JMenuBar menu=new JMenuBar();
JMenu menu1=new JMenu("用户管理");
JMenu menu2=new JMenu("文件管理");
JMenu menu3=new JMenu("密码管理");
JMenuItem item1=new JMenuItem("添加用户");
JMenuItem item2=new JMenuItem("修改用户");
JMenuItem item3=new JMenuItem("删除用户");
JMenuItem item4=new JMenuItem("上传文件");
JMenuItem item5=new JMenuItem("下载文件");
JMenuItem item6=new JMenuItem("修改密码");
String role = null;
try {
role=DataProcessing.searchUser(name).getRole();
} catch (SQLException e) {
e.printStackTrace();
}
if(role.equals("administrator")) {
menu1.setEnabled(true);
menu2.setEnabled(true);
menu3.setEnabled(true);
item1.setEnabled(true);
item2.setEnabled(true);
item3.setEnabled(true);
item4.setEnabled(false);
item5.setEnabled(true);
item6.setEnabled(true);
}
else if(role.equals("operator")){
menu1.setEnabled(false);
menu2.setEnabled(true);
menu3.setEnabled(true);
item1.setEnabled(false);
item2.setEnabled(false);
item3.setEnabled(false);
item4.setEnabled(true);
item5.setEnabled(true);
item6.setEnabled(true);
}
else if(role.equals("browser")){
menu1.setEnabled(false);
menu2.setEnabled(true);
menu3.setEnabled(true);
item1.setEnabled(false);
item2.setEnabled(false);
item3.setEnabled(false);
item4.setEnabled(false);
item5.setEnabled(true);
item6.setEnabled(true);
}
menu1.add(item1);
menu1.add(item2);
menu1.add(item3);
menu2.add(item4);
menu2.add(item5);
menu3.add(item6);
menu.add(menu1);
menu.add(menu2);
menu.add(menu3);
menu.setSize(195,30);
menu.setBounds(0,0,195,30);
menu.setVisible(true);
frame.add(menu);
item1.addActionListener(new MenuAction(name));
item2.addActionListener(new MenuAction(name));
item3.addActionListener(new MenuAction(name));
item4.addActionListener(new MenuAction(name));
item5.addActionListener(new MenuAction(name));
item6.addActionListener(new MenuAction(name));
frame.setVisible(true);
}
class MenuAction implements ActionListener{
String name;
MenuAction(String name){
this.name=name;
}
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand()=="添加用户") {
UserWindow userWindow=new UserWindow();
userWindow.showMenu(name,0);
}
else if(e.getActionCommand()=="修改用户") {
UserWindow userWindow=new UserWindow();
userWindow.showMenu(name,1);
}
else if(e.getActionCommand()=="删除用户") {
UserWindow userWindow=new UserWindow();
userWindow.showMenu(name,2);
}
else if(e.getActionCommand()=="上传文件") {
UpDownloadWindow updownloadWindow=new UpDownloadWindow();
updownloadWindow.showMenu(name,1);
}
else if(e.getActionCommand()=="下载文件") {
UpDownloadWindow updownloadWindow=new UpDownloadWindow();
updownloadWindow.showMenu(name,0);
}
else if(e.getActionCommand()=="修改密码") {
PasswordWindow passwordWindow=new PasswordWindow();
passwordWindow.showMenu(name);
}
}
}
}
-
UserWindow.java
用户更改界面
import java.awt.Font;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.SQLException;
import java.util.Enumeration;
import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JPasswordField;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
public class UserWindow{
String admin_name;
public void showMenu(String name,int index) {
admin_name=name;
JFrame frame=new JFrame();
frame.setTitle("用户管理界面");
frame.setSize(380,300);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);
JPanel panel_add=new JPanel();
panel_add.setLayout(null);
tabbedPane.addTab("添加用户", panel_add);
JLabel L1=new JLabel("账号:");
JTextField te1=new JTextField(25);
JLabel L2=new JLabel("密码:");
JPasswordField te2=new JPasswordField(25);
JLabel L3=new JLabel("角色:");
String role[]= {"administrator","operator","browser"};
JComboBox box=new JComboBox(role);
te2.setEchoChar('*');
L1.setFont(new Font("黑体",Font.PLAIN,18));
L1.setSize(50,30);
L1.setBounds(5+30,30,50,30);
te1.setFont(new Font("黑体",Font.PLAIN,18));
te1.setSize(250,30);
te1.setBounds(5+80,30,250,30);
L2.setFont(new Font("黑体",Font.PLAIN,18));
L2.setSize(50,30);
L2.setBounds(5+30,80,50,30);
te2.setFont(new Font("黑体",Font.PLAIN,18));
te2.setSize(250,30);
te2.setBounds(5+80,80,250,30);
L3.setFont(new Font("黑体",Font.PLAIN,18));
L3.setSize(50,30);
L3.setBounds(5+30,130,50,30);
box.setFont(new Font("黑体",Font.PLAIN,18));
box.setSize(200,30);
box.setBounds(5+80,130,200,30);
panel_add.add(L1);
panel_add.add(te1);
panel_add.add(L2);
panel_add.add(te2);
panel_add.add(L3);
panel_add.add(box);
JButton B1=new JButton("添加");
JButton B2=new JButton("退出");
B1.setSize(80,40);
B1.setBounds((380-80-5)/2-60,(300-40-30)/2+50,80,40);
B2.setSize(80,40);
B2.setBounds((380-80-5)/2+60,(300-40-30)/2+50,80,40);
panel_add.add(B1);
panel_add.add(B2);
B1.addActionListener(new ButtonHandler(frame,te1,te2,box));
B2.addActionListener(new ButtonHandler(frame));
String[] columnName={"用户名","密码","角色"};
String[][] rowData=new String[50][3];
Enumeration e=null;
try {
e = DataProcessing.getAllUser();
}
catch (SQLException e1) {
e1.printStackTrace();;
}
User user;
String[] nameData=new String[50];
int i=0;
while(e.hasMoreElements()) {
user=e.nextElement();
nameData[i]=rowData[i][0]=user.getName();
rowData[i][1]=user.getPassword();
rowData[i][2]=user.getRole();
i++;
}
JPanel panel_mod=new JPanel();
panel_mod.setLayout(null);
tabbedPane.addTab("修改用户", panel_mod);
JLabel L4=new JLabel("账号:");
JComboBox box_name=new JComboBox(nameData);
JLabel L5=new JLabel("密码:");
JPasswordField te4=new JPasswordField(25);
JLabel L6=new JLabel("角色:");
JComboBox box2=new JComboBox(role);
te4.setEchoChar('*');
L4.setFont(new Font("黑体",Font.PLAIN,18));
L4.setSize(50,30);
L4.setBounds(5+30,30,50,30);
box_name.setFont(new Font("黑体",Font.PLAIN,18));
box_name.setSize(250,30);
box_name.setBounds(5+80,30,250,30);
L5.setFont(new Font("黑体",Font.PLAIN,18));
L5.setSize(50,30);
L5.setBounds(5+30,80,50,30);
te4.setFont(new Font("黑体",Font.PLAIN,18));
te4.setSize(250,30);
te4.setBounds(5+80,80,250,30);
L6.setFont(new Font("黑体",Font.PLAIN,18));
L6.setSize(50,30);
L6.setBounds(5+30,130,50,30);
box2.setFont(new Font("黑体",Font.PLAIN,18));
box2.setSize(200,30);
box2.setBounds(5+80,130,200,30);
panel_mod.add(L4);
panel_mod.add(box_name);
panel_mod.add(L5);
panel_mod.add(te4);
panel_mod.add(L6);
panel_mod.add(box2);
JButton B3=new JButton("修改");
JButton B4=new JButton("退出");
B3.setSize(80,40);
B3.setBounds((380-80-5)/2-60,(300-40-30)/2+50,80,40);
B4.setSize(80,40);
B4.setBounds((380-80-5)/2+60,(300-40-30)/2+50,80,40);
panel_mod.add(B3);
panel_mod.add(B4);
B3.addActionListener(new ButtonHandler(frame,box_name,te4,box2));
B4.addActionListener(new ButtonHandler(frame));
JPanel panel_del=new JPanel();
panel_del.setLayout(null);
tabbedPane.addTab("删除用户", panel_del);
@SuppressWarnings("serial")
JTable table=new JTable(rowData,columnName) {
public boolean isCellEditable(int rowIndex,int ColIndex) {
return false;
}
};
table.setFont(new Font("黑体",Font.PLAIN,18));
table.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
JScrollPane scroll=new JScrollPane(table);
scroll.setVisible(true);
scroll.setSize(380,160);
scroll.setBounds(0,0,380,160);
panel_del.add(scroll);
JButton B5=new JButton("删除");
JButton B6=new JButton("退出");
B5.setSize(80,40);
B5.setBounds((380-80-5)/2-60,(300-40-30)/2+50,80,40);
B6.setSize(80,40);
B6.setBounds((380-80-5)/2+60,(300-40-30)/2+50,80,40);
panel_del.add(B5);
panel_del.add(B6);
B5.addActionListener(new ButtonHandler(frame,table));
B6.addActionListener(new ButtonHandler(frame));
tabbedPane.setVisible(true);
tabbedPane.setSelectedIndex(index);
frame.add(tabbedPane);
frame.setVisible(true);
}
public class ButtonHandler implements ActionListener{
public JTextField te1=new JTextField();
public JPasswordField te2=new JPasswordField();
public JFrame frame=new JFrame();
public JComboBox box=new JComboBox();
public JComboBox box_name=new JComboBox();
public JTable table;
public String role;
ButtonHandler(JFrame frame){
this.frame=frame;
}
ButtonHandler(JFrame frame,JTextField te1,JPasswordField te2,JComboBox box){
this.frame=frame;
this.te1=te1;
this.te2=te2;
this.box=box;
}
ButtonHandler(JFrame frame,JComboBox box_name,JPasswordField te2,JComboBox box) {
this.frame=frame;
this.box_name=box_name;
this.te2=te2;
this.box=box;
}
ButtonHandler(JFrame frame,JTable table) {
this.frame=frame;
this.table=table;
}
public void actionPerformed(ActionEvent e) {
String name=te1.getText();
String password=String.valueOf(te2.getPassword());
if(e.getActionCommand().equals("修改")) {
try {
name=(String)box_name.getSelectedItem();
if(DataProcessing.searchUser(name)!=null) {
role=(String)box.getSelectedItem();
DataProcessing.update(name, password, role);
JOptionPane.showMessageDialog(null, "修改成功", "温馨提示", JOptionPane.PLAIN_MESSAGE);
frame.dispose();
UserWindow userWindow=new UserWindow();
userWindow.showMenu(admin_name,1);
}
else {
JOptionPane.showMessageDialog(null, "账号不存在", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
} catch (HeadlessException e1) {
e1.printStackTrace();
} catch (SQLException e1) {
e1.printStackTrace();
}
}
else if(e.getActionCommand().equals("添加")){
role=(String)box.getSelectedItem();
try {
DataProcessing.insert(name, password, role);
} catch (SQLException e1) {
e1.printStackTrace();
}
JOptionPane.showMessageDialog(null, "添加成功", "温馨提示", JOptionPane.PLAIN_MESSAGE);
frame.dispose();
UserWindow userWindow=new UserWindow();
userWindow.showMenu(admin_name,0);
}
else if(e.getActionCommand().equals("删除")){
if(table.getSelectedRow()<0) ;
else {
String name_del=(String) table.getValueAt(table.getSelectedRow(), 0);
if(name_del.equals(admin_name)) {
JOptionPane.showMessageDialog(null, "无法删除", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
else {
try {
if(DataProcessing.delete(name_del)) {
JOptionPane.showMessageDialog(null, "删除成功", "温馨提示", JOptionPane.PLAIN_MESSAGE);
}
else {
JOptionPane.showMessageDialog(null, "账号不存在", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
} catch (SQLException e1) {
e1.printStackTrace();
}
frame.dispose();
UserWindow userWindow=new UserWindow();
userWindow.showMenu(admin_name,2);
}
}
}
else if(e.getActionCommand().equals("退出")) {
frame.dispose();
}
}
}
}
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UpDownloadWindow.java
上传下载界面
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.sql.SQLException;
import java.sql.Timestamp;
import java.util.Enumeration;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTabbedPane;
import javax.swing.JTable;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
public class UpDownloadWindow {
String user_name;
String uploadpath="C:\\uploadfile\\";
String downloadpath="C:\\downloadfile\\";
public void showMenu(String name,int index) {
user_name=name;
JFrame frame=new JFrame();
frame.setTitle("文件管理界面");
frame.setSize(460,400);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
JTabbedPane tabbedPane = new JTabbedPane(JTabbedPane.TOP);
JPanel panel_download=new JPanel();
panel_download.setLayout(null);
tabbedPane.addTab("文件下载", panel_download);
String[] columnName={"ID","Creator","Time","FileName","Description"};
String[][] rowData=new String[50][5];
Enumeration e=null;
try {
e = DataProcessing.getAllDocs();
}
catch (SQLException e1) {
e1.printStackTrace();;
}
Doc doc;
String[] nameData=new String[50];
int i=0;
while(e.hasMoreElements()) {
doc=e.nextElement();
nameData[i]=rowData[i][0]=doc.getID();
rowData[i][1]=doc.getCreator();
rowData[i][2]=doc.getTimestamp().toString();
rowData[i][3]=doc.getFilename();
rowData[i][4]=doc.getDescription();
i++;
}
@SuppressWarnings("serial")
JTable table=new JTable(rowData,columnName) {
public boolean isCellEditable(int rowIndex,int ColIndex) {
return false;
}
};
table.setFont(new Font("黑体",Font.PLAIN,18));
table.getSelectionModel().setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
JScrollPane scroll=new JScrollPane(table);
scroll.setVisible(true);
scroll.setSize(460,160);
scroll.setBounds(0,0,460,160);
//scroll.setHorizontalScrollBarPolicy(scroll.HORIZONTAL_SCROLLBAR_ALWAYS);
panel_download.add(scroll);
JButton B1=new JButton("下载");
JButton B2=new JButton("退出");
B1.setSize(80,40);
B1.setBounds((460-80-5)/2-60,(400-40-30)/2+50,80,40);
B2.setSize(80,40);
B2.setBounds((460-80-5)/2+60,(400-40-30)/2+50,80,40);
B1.addActionListener(new ButtonHandler(frame,table));
B2.addActionListener(new ButtonHandler(frame));
panel_download.add(B1);
panel_download.add(B2);
JPanel panel_upload=new JPanel();
panel_upload.setLayout(null);
tabbedPane.addTab("文件上传", panel_upload);
JLabel L1=new JLabel("档案号:");
JTextField te1=new JTextField(25);
JLabel L2=new JLabel("档案描述:");
JTextArea te2=new JTextArea(6,25);
JLabel L3=new JLabel("档案文件名:");
JTextField te3=new JTextField(25);
L1.setFont(new Font("黑体",Font.PLAIN,18));
L1.setSize(100,30);
L1.setBounds(5,0,100,30);
te1.setFont(new Font("黑体",Font.PLAIN,18));
te1.setSize(250,30);
te1.setBounds(5+100,0,250,30);
L2.setFont(new Font("黑体",Font.PLAIN,18));
L2.setSize(100,30);
L2.setBounds(5,50,100,30);
te2.setFont(new Font("黑体",Font.PLAIN,18));
te2.setSize(250,150);
te2.setBounds(5+100,50,250,150);
L3.setFont(new Font("黑体",Font.PLAIN,18));
L3.setSize(100,30);
L3.setBounds(5,250,100,30);
te3.setFont(new Font("黑体",Font.PLAIN,18));
te3.setSize(250,30);
te3.setBounds(5+100,250,250,30);
panel_upload.add(L1);
panel_upload.add(L2);
panel_upload.add(L3);
panel_upload.add(te1);
panel_upload.add(te2);
panel_upload.add(te3);
JButton B3=new JButton("打开");
JButton B4=new JButton("上传");
JButton B5=new JButton("取消");
B3.setSize(80,40);
B3.setBounds(5+350,250,80,40);
B4.setSize(80,40);
B4.setBounds((460-80-5)/2-60,290,80,40);
B5.setSize(80,40);
B5.setBounds((460-80-5)/2+60,290,80,40);
B3.addActionListener(new ButtonHandler(te3));
B4.addActionListener(new ButtonHandler(frame,te1,te2,te3));
B5.addActionListener(new ButtonHandler(frame));
panel_upload.add(B3);
panel_upload.add(B4);
panel_upload.add(B5);
tabbedPane.setVisible(true);
tabbedPane.setSelectedIndex(index);
try {
if(DataProcessing.searchUser(user_name).getRole().equals("operator")) {
tabbedPane.setEnabledAt(1, true);
}
else tabbedPane.setEnabledAt(1, false);
} catch (SQLException e1) {
e1.printStackTrace();
}
frame.add(tabbedPane);
frame.setVisible(true);
}
public class ButtonHandler implements ActionListener{
JTextField te1;
JTextArea te2;
JTextField te3;
JFrame frame;
JTable table=new JTable();
ButtonHandler(JTextField te3){
this.te3=te3;
}
ButtonHandler(JFrame frame,JTextField te1,JTextArea te2,JTextField te3){
this.frame=frame;
this.te1=te1;
this.te2=te2;
this.te3=te3;
}
ButtonHandler(JFrame frame){
this.frame=frame;
}
ButtonHandler(JFrame frame,JTable table) {
this.frame=frame;
this.table=table;
}
public void actionPerformed(ActionEvent e) {
JFileChooser fileChooser=new JFileChooser();
if(e.getActionCommand()=="下载") {
int op=JOptionPane.showConfirmDialog(null, "确认下载", "温馨提示", JOptionPane.YES_NO_OPTION);
if(op==JOptionPane.YES_OPTION) {
if(table.getSelectedRow()<0) ;
else {
String id=(String)table.getValueAt(table.getSelectedRow(), 0);
byte[] buffer=new byte[1024];
Doc doc=null;
try {
doc = DataProcessing.searchDoc(id);
}
catch (SQLException e1) {
e1.printStackTrace();
}
File tempFile=new File(uploadpath+doc.getFilename());
String filename=tempFile.getName();
BufferedInputStream infile = null;
try {
infile = new BufferedInputStream(new FileInputStream(tempFile));
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}
BufferedOutputStream targetfile = null;
try {
targetfile = new BufferedOutputStream(new FileOutputStream(new File(downloadpath+filename)));
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}
while(true) {
int byteRead = 0;
try {
byteRead = infile.read(buffer);
} catch (IOException e1) {
e1.printStackTrace();
}
if(byteRead==-1)
break;
try {
targetfile.write(buffer,0,byteRead);
} catch (IOException e1) {
e1.printStackTrace();
}
}
try {
infile.close();
} catch (IOException e1) {
e1.printStackTrace();
}
try {
targetfile.close();
} catch (IOException e1) {
e1.printStackTrace();
}
JOptionPane.showMessageDialog(null, "下载成功", "温馨提示", JOptionPane.PLAIN_MESSAGE);
}
}
}
else if(e.getActionCommand()=="退出") {
frame.dispose();
}
else if(e.getActionCommand()=="打开") {
fileChooser.setFileSelectionMode(0);
int state=fileChooser.showOpenDialog(null);
if(state==1) {
return ;
}
else {
File file=fileChooser.getSelectedFile();
te3.setText(file.getAbsolutePath());
}
}
else if(e.getActionCommand()=="上传"){
int op=JOptionPane.showConfirmDialog(null, "确认上传", "温馨提示", JOptionPane.YES_NO_OPTION);
if(op==JOptionPane.YES_OPTION) {
String ID=te1.getText();
String description=te2.getText();
String filename=te3.getText();
byte[] buffer=new byte[1024];
Timestamp timestamp=new Timestamp(System.currentTimeMillis());
File tempFile=new File(filename.trim());
String fileName=tempFile.getName();
try {
if(DataProcessing.insertDoc(ID,user_name,timestamp,description,fileName)) ;
else JOptionPane.showMessageDialog(null, "存入数据库失败", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
catch (SQLException e1) {
e1.printStackTrace();
}
BufferedInputStream infile = null;
try {
infile = new BufferedInputStream(new FileInputStream(filename));
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}
BufferedOutputStream targetfile = null;
try {
targetfile = new BufferedOutputStream(new FileOutputStream(new File(uploadpath+fileName)));
} catch (FileNotFoundException e1) {
e1.printStackTrace();
}
while(true) {
int byteRead = 0;
try {
byteRead = infile.read(buffer);
} catch (IOException e1) {
e1.printStackTrace();
}
if(byteRead==-1)
break;
try {
targetfile.write(buffer,0,byteRead);
} catch (IOException e1) {
e1.printStackTrace();
}
}
try {
infile.close();
} catch (IOException e1) {
e1.printStackTrace();
}
try {
targetfile.close();
} catch (IOException e1) {
e1.printStackTrace();
}
JOptionPane.showMessageDialog(null, "上传成功", "温馨提示", JOptionPane.PLAIN_MESSAGE);
frame.dispose();
UpDownloadWindow updownloadWindow=new UpDownloadWindow();
updownloadWindow.showMenu(user_name,1);
}
else if(op==JOptionPane.NO_OPTION) {
;
}
}
else if(e.getActionCommand()=="取消") {
frame.dispose();
}
}
}
}
-
PasswordWindow.java
密码修改界面
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.sql.SQLException;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
public class PasswordWindow {
String user_name;
String user_role;
public void showMenu(String name) {
user_name=name;
try {
user_role=DataProcessing.searchUser(user_name).getRole();
} catch (SQLException e1) {
e1.printStackTrace();
}
JFrame frame=new JFrame();
frame.setTitle("密码修改界面");
frame.setSize(380,400);
frame.setLocationRelativeTo(null);
frame.setResizable(false);
frame.setLayout(null);
JLabel L1=new JLabel("账号:");
JTextField te1=new JTextField(25);
JLabel L2=new JLabel("旧密码:");
JPasswordField te2=new JPasswordField(25);
te2.setEchoChar('*');
JLabel L3=new JLabel("新密码:");
JPasswordField te3=new JPasswordField(25);
te3.setEchoChar('*');
JLabel L4=new JLabel("重复密码:");
JPasswordField te4=new JPasswordField(25);
te4.setEchoChar('*');
JLabel L5=new JLabel("角色:");
JTextField te5=new JTextField(25);
L1.setFont(new Font("黑体",Font.PLAIN,18));
L1.setSize(100,30);
L1.setBounds(5,30,100,30);
te1.setFont(new Font("黑体",Font.PLAIN,18));
te1.setSize(250,30);
te1.setBounds(5+100,30,250,30);
L2.setFont(new Font("黑体",Font.PLAIN,18));
L2.setSize(100,30);
L2.setBounds(5,80,100,30);
te2.setFont(new Font("黑体",Font.PLAIN,18));
te2.setSize(250,30);
te2.setBounds(5+100,80,250,30);
L3.setFont(new Font("黑体",Font.PLAIN,18));
L3.setSize(100,30);
L3.setBounds(5,130,100,30);
te3.setFont(new Font("黑体",Font.PLAIN,18));
te3.setSize(250,30);
te3.setBounds(5+100,130,250,30);
L4.setFont(new Font("黑体",Font.PLAIN,18));
L4.setSize(100,30);
L4.setBounds(5,180,100,30);
te4.setFont(new Font("黑体",Font.PLAIN,18));
te4.setSize(250,30);
te4.setBounds(5+100,180,250,30);
L5.setFont(new Font("黑体",Font.PLAIN,18));
L5.setSize(100,30);
L5.setBounds(5,230,100,30);
te5.setFont(new Font("黑体",Font.PLAIN,18));
te5.setSize(250,30);
te5.setBounds(5+100,230,250,30);
frame.add(L1);
frame.add(L2);
frame.add(L3);
frame.add(L4);
frame.add(L5);
frame.add(te1);
frame.add(te2);
frame.add(te3);
frame.add(te4);
frame.add(te5);
te1.setText(user_name);
te1.setEnabled(false);
te5.setText(user_role);
te5.setEnabled(false);
JButton B1=new JButton("确认");
JButton B2=new JButton("退出");
B1.setSize(80,40);
B1.setBounds((380-80-5)/2-60,300,80,40);
B2.setSize(80,40);
B2.setBounds((380-80-5)/2+60,300,80,40);
B1.addActionListener(new ButtonHandler(frame,te2,te3,te4));
frame.add(B1);
frame.add(B2);
frame.setVisible(true);
}
public class ButtonHandler implements ActionListener{
JFrame frame;
JTextField te2;
JTextField te3;
JTextField te4;
ButtonHandler(JFrame frame,JTextField te2,JTextField te3,JTextField te4){
this.frame=frame;
this.te2=te2;
this.te3=te3;
this.te4=te4;
}
public void actionPerformed(ActionEvent e) {
String old_password=te2.getText();
String new_password=te3.getText();
String new_password2=te4.getText();
if(e.getActionCommand()=="确认") {
try {
if(DataProcessing.search(user_name, old_password)!=null) {
if(new_password.equals(new_password2)) {
DataProcessing.update(user_name, new_password, user_role);
frame.dispose();
JOptionPane.showMessageDialog(null, "修改成功", "温馨提示", JOptionPane.PLAIN_MESSAGE);
}
else {
JOptionPane.showMessageDialog(null, "两次输入的新密码不一致", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
}
else {
JOptionPane.showMessageDialog(null, "密码错误", "温馨提示", JOptionPane.ERROR_MESSAGE);
}
} catch (SQLException e1) {
e1.printStackTrace();
}
}
else if(e.getActionCommand()=="退出"){
frame.dispose();
}
}
}
}
以下是需要完成的结果展示：Java面向对象与多线程综合实验（四）之GUI设计