📄 mainwindow.java~20~
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import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class MainWindow
extends JFrame
implements ActionListener {
JPanel panel1;
Container c;
JMenuBar menuB;
JMenu systemMenu, bookMGRMenu, borrowBookMenu, returnBookMenu,
infoBrowseMenu, userMGRMenu,aboutMenu;
JMenuItem userLoginMenuItem, userAddMenuItem, userModifyMenuItem,
userDeleteMenuItem, exitMenuItem, bookAddMenuItem, bookModifyMenuItem,
bookDeleteMenuItem,
borrowBookMenuItem, borrowInfoMenuItem, returnBookMenuItem,
returnInfoMenuItem,
bookListMenuItem, borrowBookListMenuItem, userListMenuItem,
aboutMenuItem;
public MainWindow() {
super("图书馆管理系统");
//--系统管理菜单--
menuB = new JMenuBar();
systemMenu = new JMenu("系统管理");
userMGRMenu = new JMenu("用户管理");
userLoginMenuItem = new JMenuItem("用户登录");
userAddMenuItem = new JMenuItem("添加用户");
userModifyMenuItem = new JMenuItem("修改密码");
userDeleteMenuItem = new JMenuItem("删除用户");
exitMenuItem = new JMenuItem("退出");
systemMenu.add(userLoginMenuItem);
userMGRMenu.add(userAddMenuItem);
userMGRMenu.add(userModifyMenuItem);
userMGRMenu.add(userDeleteMenuItem);
systemMenu.add(userMGRMenu);
systemMenu.add(exitMenuItem);
userLoginMenuItem.addActionListener(this);
userAddMenuItem.addActionListener(this);
userModifyMenuItem.addActionListener(this);
userDeleteMenuItem.addActionListener(this);
exitMenuItem.addActionListener(this);
menuB.add(systemMenu);
//---书籍管理菜单--
bookMGRMenu = new JMenu("书籍管理");
bookAddMenuItem = new JMenuItem("添加书籍");
bookModifyMenuItem = new JMenuItem("修改书籍");
bookDeleteMenuItem = new JMenuItem("删除书籍");
bookMGRMenu.add(bookAddMenuItem);
bookMGRMenu.add(bookModifyMenuItem);
bookMGRMenu.add(bookDeleteMenuItem);
bookAddMenuItem.addActionListener(this);
bookModifyMenuItem.addActionListener(this);
bookDeleteMenuItem.addActionListener(this);
menuB.add(bookMGRMenu);
//--借书管理菜单--
borrowBookMenu = new JMenu("借书管理");
borrowBookMenuItem = new JMenuItem("书籍出借");
borrowInfoMenuItem = new JMenuItem("出借信息修改");
borrowBookMenu.add(borrowBookMenuItem);
borrowBookMenu.add(borrowInfoMenuItem);
borrowBookMenuItem.addActionListener(this);
borrowInfoMenuItem.addActionListener(this);
menuB.add(borrowBookMenu);
//--还书管理菜单--
returnBookMenu = new JMenu("还书管理");
returnBookMenuItem = new JMenuItem("书籍还入");
returnInfoMenuItem = new JMenuItem("书籍还入信息修改");
returnBookMenu.add(returnBookMenuItem);
returnBookMenu.add(returnInfoMenuItem);
returnBookMenuItem.addActionListener(this);
returnInfoMenuItem.addActionListener(this);
menuB.add(returnBookMenu);
//--信息一览菜单--
infoBrowseMenu = new JMenu("信息一览");
bookListMenuItem = new JMenuItem("书籍列表");
borrowBookListMenuItem = new JMenuItem("借阅情况表");
userListMenuItem = new JMenuItem("用户列表");
infoBrowseMenu.add(bookListMenuItem);
infoBrowseMenu.add(borrowBookListMenuItem);
infoBrowseMenu.add(userListMenuItem);
bookListMenuItem.addActionListener(this);
borrowBookListMenuItem.addActionListener(this);
userListMenuItem.addActionListener(this);
menuB.add(infoBrowseMenu);
//--关于菜单--
aboutMenu=new JMenu("帮助");
aboutMenuItem = new JMenuItem("关于");
aboutMenuItem.addActionListener(this);
aboutMenu.add(aboutMenuItem);
menuB.add(aboutMenu);
//----------------------------------
setJMenuBar(menuB);
c = getContentPane();
c.setLayout(new BorderLayout());
panel1 = new JPanel();
panel1.setLayout(new BorderLayout());
c.add(panel1, BorderLayout.CENTER);
//--设置初始功能:--
userMGRMenu.setEnabled(false);
bookMGRMenu.setEnabled(false);
borrowBookMenu.setEnabled(false);
returnBookMenu.setEnabled(false);
infoBrowseMenu.setEnabled(false);
aboutMenu.setEnabled(false);
}
//--设置每个菜单点击后出现的窗口和窗口显示的位置--
public void actionPerformed(ActionEvent e) {
if (e.getActionCommand() == "用户登录") {
UserLogin UserLoginFrame = new UserLogin(this);
Dimension FrameSize = UserLoginFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
UserLoginFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
UserLoginFrame.pack();
UserLoginFrame.show();
}
else if (e.getActionCommand() == "添加用户") {
UserAdd UserAddFrame = new UserAdd();
Dimension FrameSize = UserAddFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
UserAddFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
UserAddFrame.pack();
UserAddFrame.show();
}
else if (e.getActionCommand() == "修改密码") {
UserModify UserModifyFrame = new UserModify();
Dimension FrameSize = UserModifyFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
UserModifyFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
UserModifyFrame.pack();
UserModifyFrame.show();
}
else if (e.getActionCommand() == "删除用户") {
UserDelete UserDeleteFrame = new UserDelete();
Dimension FrameSize = UserDeleteFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
UserDeleteFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
UserDeleteFrame.pack();
UserDeleteFrame.show();
}
else if (e.getActionCommand() == "添加书籍") {
BookAdd BookAddFrame = new BookAdd();
Dimension FrameSize = BookAddFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BookAddFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
BookAddFrame.pack();
BookAddFrame.show();
}
else if (e.getActionCommand() == "修改书籍") {
BookModify BookModifyFrame = new BookModify();
Dimension FrameSize = BookModifyFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BookModifyFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
BookModifyFrame.pack();
BookModifyFrame.show();
}
else if (e.getActionCommand() == "删除书籍") {
BookDelete BookDeleteFrame = new BookDelete();
Dimension FrameSize = BookDeleteFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BookDeleteFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
BookDeleteFrame.pack();
BookDeleteFrame.show();
}
else if (e.getActionCommand() == "书籍出借") {
BorrowBook BorrowBookFrame = new BorrowBook();
Dimension FrameSize = BorrowBookFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BorrowBookFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
BorrowBookFrame.pack();
BorrowBookFrame.show();
}
else if (e.getActionCommand() == "出借信息修改") {
BorrowInfo BorrowInfoFrame = new BorrowInfo();
Dimension FrameSize = BorrowInfoFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BorrowInfoFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
BorrowInfoFrame.pack();
BorrowInfoFrame.show();
}
else if (e.getActionCommand() == "书籍还入") {
ReturnBook ReturnBookFrame = new ReturnBook();
Dimension FrameSize = ReturnBookFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
ReturnBookFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
ReturnBookFrame.pack();
ReturnBookFrame.show();
}
else if (e.getActionCommand() == "书籍还入信息修改") {
ReturnInfo ReturnInfoFrame = new ReturnInfo();
Dimension FrameSize = ReturnInfoFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
ReturnInfoFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
ReturnInfoFrame.pack();
ReturnInfoFrame.show();
}
else if (e.getActionCommand() == "书籍列表") {
BookList BookListFrame = new BookList();
Dimension FrameSize = BookListFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BookListFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
BookListFrame.pack();
BookListFrame.show();
}
else if (e.getActionCommand() == "借阅情况表") {
BorrowBookList BorrowBookListFrame = new BorrowBookList();
Dimension FrameSize = BorrowBookListFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
BorrowBookListFrame.setLocation( (MainFrameSize.width - FrameSize.width) /
2 + loc.x,
(MainFrameSize.height - FrameSize.height) /
2 + loc.y);
BorrowBookListFrame.pack();
BorrowBookListFrame.show();
}
else if (e.getActionCommand() == "用户列表") {
UserList UserListFrame = new UserList();
Dimension FrameSize = UserListFrame.getPreferredSize();
Dimension MainFrameSize = getSize();
Point loc = getLocation();
UserListFrame.setLocation( (MainFrameSize.width - FrameSize.width) / 2 +
loc.x,
(MainFrameSize.height - FrameSize.height) / 2 +
loc.y);
UserListFrame.pack();
UserListFrame.show();
}
else if (e.getActionCommand() == "关于") {
String str = "本程序为图书馆管理系统，设计者为麦密辉\n"+
"本书作者在原系统的基础上做了一小部分修改\n";
JOptionPane.showMessageDialog(null, str, "关于",
JOptionPane.INFORMATION_MESSAGE);
}
else if (e.getActionCommand() == "退出") {
this.dispose();
System.exit(0);
}
}
//--设置登录用户的权限--
public void setEnable(String powerType) {
if (powerType.trim().equals("系统管理员")) {
userMGRMenu.setEnabled(true);
bookMGRMenu.setEnabled(true);
borrowBookMenu.setEnabled(true);
returnBookMenu.setEnabled(true);
infoBrowseMenu.setEnabled(true);
userListMenuItem.setEnabled(true);
aboutMenu.setEnabled(true);
}
else if (powerType.trim().equals("书籍管理员")) {
userMGRMenu.setEnabled(false);
bookMGRMenu.setEnabled(true);
borrowBookMenu.setEnabled(false);
returnBookMenu.setEnabled(false);
infoBrowseMenu.setEnabled(true);
userListMenuItem.setEnabled(false);
aboutMenu.setEnabled(true);
}
else if (powerType.trim().equals("借阅管理员")) {
userMGRMenu.setEnabled(false);
bookMGRMenu.setEnabled(false);
borrowBookMenu.setEnabled(true);
returnBookMenu.setEnabled(true);
infoBrowseMenu.setEnabled(true);
userListMenuItem.setEnabled(false);
aboutMenu.setEnabled(true);
}
else if (powerType.trim().equals("else")) {
userMGRMenu.setEnabled(false);
bookMGRMenu.setEnabled(false);
borrowBookMenu.setEnabled(false);
returnBookMenu.setEnabled(false);
infoBrowseMenu.setEnabled(false);
aboutMenu.setEnabled(false);
}
}
public static void main(String args[]) {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
}
catch (Exception e) {
e.printStackTrace();
}
MainWindow mainFrame = new MainWindow();
mainFrame.setSize(400,300);
Dimension d = Toolkit.getDefaultToolkit().getScreenSize();
mainFrame.setLocation( (d.width - mainFrame.getSize().width) / 2,
(d.height - mainFrame.getSize().height) / 2);
mainFrame.show();
}
}
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