Java学生信息管理系统实训第四天总结
实训第四天，上次了将服务类的全部测试完了以后，就开始写应用程序类。最先写了Application.
package net.lsl.student.app;
import net.lsl.student.gui.LoginFrame;
import net.lsl.student.gui.MainFrame;
import net.lsl.student.gui.RegisterFrame;
/**
- 功能：应用程序类
-
存放全局数据 - 作者：李世兰
- 日期：2019年6月20日08:26:04
/
public class Application {
/*- 登录用户标识符
/
public static int id;
/* - 登录用户名
/
public static String username;
/* - 登录用户密码
/
public static String password;
/* - 登录窗口
/
public static LoginFrame loginFrame;
/* - 主窗口
/
public static MainFrame mainFrame;
/* - 注册窗口
*/
public static RegisterFrame registerFrame;
}
- 登录用户标识符
然后再建立了三个界面类。
1、主界面窗口MainFrame
package net.lsl.student.gui;
import net.lsl.student.app.Application;
import net.lsl.student.bean.Status;
import net.lsl.student.service.StatusService;
import net.lsl.student.service.impl.StatusServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.io.IOException;
public class MainFrame extends JFrame {
/**
* 菜单部分
*/
private JMenuBar mnbMain;
/**
* 设置菜单
*/
private JMenu mnuSet;
private JMenuItem mniSetCollegeInfo;
private JMenuItem mniSetStatusBar;
private JMenuItem mniChangePassword;
private JMenuItem mniExit;
/**
* 操作菜单
*/
private JMenu mnuOperate;
private JMenuItem mniAddStudent;
private JMenuItem mniBrowseStudent;
private JMenuItem mniEditStudent;
/**
* 删除菜单
*/
private JMenu mnuDelStu;
private JMenuItem mniDelStudentById;
private JMenuItem mniDelStudentsByClass;
private JMenuItem mniDelStudentsByDepartment;
/**
* 查询菜单
*/
private JMenu mnuFind;
private JMenuItem mniFindStudentById;
private JMenuItem mniFindStudentsByName;
private JMenuItem mniFindStudentsByClass;
private JMenuItem mniFindStudentsByDepartment;
/**
* 统计菜单
*/
private JMenu mnuCount;
private JMenuItem mniCountStudentsBySex;
private JMenuItem mniCountStudentsByClass;
private JMenuItem mniCountStudentsByDepartment;
/**
* 帮助菜单
*/
private JMenu mnuHelp;
private JMenuItem mniHelp;
private JMenuItem mniAbout;
/**
* 面板
*/
private JPanel panel;
private JPanel pnlCenter;
private JPanel pnlSouth;
/**
* 状态栏标签
*/
private JLabel lblStatusBar;
/**
* 背景标签
*/
private JLabel lblBackground;
/**
* 图标对象
*/
private ImageIcon imgCollege;
private ImageIcon imgExit;
private ImageIcon imgPassword;
private ImageIcon imgQuery;
private ImageIcon imgBrowse;
private ImageIcon imgCount;
private ImageIcon imgBackground;
/**
* 工具栏
*/
private JToolBar toolbar;
/**
* 按钮
*/
private JButton btnSetCollege;
private JButton btnChangePassword;
private JButton btnFindStudentById;
private JButton btnExit;
private JButton btnBrowseStudent;
private JButton btnCountByDepartment;
/**
* 状态对象
*/
private static StatusService statusService;
private static Status status;
/**
*
* @param title
*/
public MainFrame(String title){
super(title);
initGUI();
}
private void initGUI(){
// 创建主菜单
mnbMain = new JMenuBar();
// 创建【设置】菜单及其菜单项
mnuSet = new JMenu("系统设置[S]");
mnuSet.setMnemonic(KeyEvent.VK_S);
mniSetCollegeInfo = new JMenuItem("学校信息");
mniSetStatusBar = new JMenuItem("状态栏信息");
mniChangePassword = new JMenuItem("修改密码");
mniExit = new JMenuItem("退出系统");
// 创建【操作】菜单及其菜单项
mnuOperate = new JMenu("数据操作[O]");
mnuOperate.setMnemonic(KeyEvent.VK_O);
mniAddStudent = new JMenuItem("增加学生表记录");
mnuDelStu = new JMenu("删除学生表记录");
mniEditStudent = new JMenuItem("编辑学生表记录");
mniBrowseStudent = new JMenuItem("浏览学生表记录");
// 创建【删除学生表记录】的子菜单
mniDelStudentById = new JMenuItem("按学号删除");
mniDelStudentsByClass = new JMenuItem("按班级删除");
mniDelStudentsByDepartment = new JMenuItem("按系部删除");
// 创建【查询】菜单及其菜单项
mnuFind = new JMenu("查询学生[Q]");
mnuFind.setMnemonic(KeyEvent.VK_Q);
mniFindStudentById = new JMenuItem("按学号查询");
mniFindStudentsByName = new JMenuItem("按姓名查询");
mniFindStudentsByClass = new JMenuItem("按班级查询");
mniFindStudentsByDepartment = new JMenuItem("按系部查询");
// 创建【统计】菜单及其菜单项
mnuCount = new JMenu("人数统计[C]");
mnuCount.setMnemonic(KeyEvent.VK_C);
mniCountStudentsBySex = new JMenuItem("按性别统计");
mniCountStudentsByClass = new JMenuItem("按班级统计");
mniCountStudentsByDepartment = new JMenuItem("按系部统计");
// 创建【帮助】菜单及其菜单项
mnuHelp = new JMenu("帮助[H]");
mnuHelp.setMnemonic(KeyEvent.VK_H);
mniHelp = new JMenuItem("帮助");
mniAbout = new JMenuItem("关于");
// 创建图标对象
imgCollege = new ImageIcon("images/college.png");
imgPassword = new ImageIcon("images/password.png");
imgQuery = new ImageIcon("images/query.png");
imgBrowse = new ImageIcon("images/browse.png");
imgCount = new ImageIcon("images/count.png");
imgExit = new ImageIcon("images/exit.png");
// 创建工具栏
toolbar = new JToolBar();
btnSetCollege = new JButton("设置学校", imgCollege);
btnSetCollege.setToolTipText("设置学校信息");
btnSetCollege.setVerticalTextPosition(AbstractButton.BOTTOM);
btnSetCollege.setHorizontalTextPosition(AbstractButton.CENTER);
btnChangePassword = new JButton("修改密码", imgPassword);
btnChangePassword.setToolTipText("修改用户密码");
btnChangePassword.setVerticalTextPosition(AbstractButton.BOTTOM);
btnChangePassword.setHorizontalTextPosition(AbstractButton.CENTER);
btnBrowseStudent = new JButton("浏览学生", imgBrowse);
btnBrowseStudent.setToolTipText("浏览学生记录");
btnBrowseStudent.setVerticalTextPosition(AbstractButton.BOTTOM);
btnBrowseStudent.setHorizontalTextPosition(AbstractButton.CENTER);
btnFindStudentById = new JButton("查询学生", imgQuery);
btnFindStudentById.setToolTipText("按学号查询学生记录");
btnFindStudentById.setVerticalTextPosition(AbstractButton.BOTTOM);
btnFindStudentById.setHorizontalTextPosition(AbstractButton.CENTER);
btnCountByDepartment = new JButton("统计人数", imgCount);
btnCountByDepartment.setToolTipText("按系部统计学生人数");
btnCountByDepartment.setVerticalTextPosition(AbstractButton.BOTTOM);
btnCountByDepartment.setHorizontalTextPosition(AbstractButton.CENTER);
btnExit = new JButton("退出系统", imgExit);
btnExit.setToolTipText("退出系统");
btnExit.setVerticalTextPosition(AbstractButton.BOTTOM);
btnExit.setHorizontalTextPosition(AbstractButton.CENTER);
toolbar.add(btnSetCollege);
toolbar.add(btnChangePassword);
toolbar.add(btnBrowseStudent);
toolbar.add(btnFindStudentById);
toolbar.add(btnCountByDepartment);
toolbar.add(btnExit);
// 创建面板
panel = (JPanel) getContentPane();
pnlCenter = new JPanel();
pnlSouth = new JPanel();
pnlSouth.setLayout(new FlowLayout(FlowLayout.LEFT));
// 创建背景图片
imgBackground = new ImageIcon("images/background.jpg");
// 创建背景标签
lblBackground = new JLabel(imgBackground);
// 创建状态栏标签
lblStatusBar = new JLabel();
// 设置菜单栏
setJMenuBar(mnbMain);
// 添加【设置】菜单
mnbMain.add(mnuSet);
mnuSet.add(mniSetCollegeInfo);
mnuSet.add(mniSetStatusBar);
mnuSet.add(mniChangePassword);
mnuSet.addSeparator();
mnuSet.add(mniExit);
// 添加【删除学生表记录】菜单
mnuDelStu.add(mniDelStudentById);
mnuDelStu.add(mniDelStudentsByClass);
mnuDelStu.add(mniDelStudentsByDepartment);
// 添加【操作】菜单
mnbMain.add(mnuOperate);
mnuOperate.add(mniAddStudent);
mnuOperate.add(mniEditStudent);
mnuOperate.add(mnuDelStu);
mnuOperate.add(mniBrowseStudent);
// 添加【查询】菜单
mnbMain.add(mnuFind);
mnuFind.add(mniFindStudentById);
mnuFind.add(mniFindStudentsByName);
mnuFind.add(mniFindStudentsByClass);
mnuFind.add(mniFindStudentsByDepartment);
// 添加【统计】菜单
mnbMain.add(mnuCount);
mnuCount.add(mniCountStudentsBySex);
mnuCount.add(mniCountStudentsByClass);
mnuCount.add(mniCountStudentsByDepartment);
// 添加【帮助】菜单
mnbMain.add(mnuHelp);
mnuHelp.add(mniHelp);
mnuHelp.add(mniAbout);
// 添加面板
panel.setLayout(new BorderLayout());
panel.add(toolbar, "North");
panel.add(pnlCenter, "Center");
panel.add(pnlSouth, "South");
pnlCenter.add(lblBackground);
pnlSouth.add(lblStatusBar);
// 非管理员不能设置状态栏
if (!Application.username.equals("admin")) {
mniSetStatusBar.setEnabled(false);
mniAddStudent.setEnabled(false);
mnuDelStu.setEnabled(false);
mniEditStudent.setEnabled(false);
}
// 设置状态栏信息
setStatusBar();
//创建状态服务对象
statusService = new StatusServiceImpl();
//获取状态对象
status = statusService.findStatusById(1);
//设置窗口尺寸
setSize(800,640);
//设置窗口可见
setVisible(true);
//设置窗口屏幕居中
setLocationRelativeTo(null);
//设置窗口标题
setTitle("学生信息管理系统" + status.getVersion());
//注册窗口监听器
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
exitSystem();
}
});
// 设置菜单
// 【设置学校信息】菜单项单击事件
mniSetCollegeInfo.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SetCollegeInfoFrame("");
}
});
// 【设置状态栏信息】菜单项单击事件
mniSetStatusBar.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SetStatusBarFrame("");
}
});
// 【修改密码】菜单项单击事件
mniChangePassword.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new ChangePasswordFrame("");
}
});
// 【退出系统】菜单项单击事件
mniExit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
exitSystem();
}
});
// 查询菜单
// 【按学号查询】菜单项单击事件
mniFindStudentById.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentByIdFrame("");
}
});
// 【按姓名查询】菜单项单击事件
mniFindStudentsByName.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentsByNameFrame("");
}
});
// 【按班级查询】菜单项单击事件
mniFindStudentsByClass.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentsByClassFrame("");
}
});
// 【按系部查询】菜单项单击事件
mniFindStudentsByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentsByDepartmentFrame("");
}
});
// 统计菜单
// 【按性别统计人数】菜单项单击事件
mniCountStudentsBySex.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentBySexFrame("");
}
});
// 【按班级统计人数】菜单项单击事件
mniCountStudentsByClass.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentByClassFrame("");
}
});
// 【按系部统计人数】菜单项单击事件
mniCountStudentsByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentsByDepartmentFrame("");
}
});
// 【增加学生记录】菜单项单击事件
mniAddStudent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new AddStudentFrame("");
}
});
// 【按学号删除学生记录】菜单项单击事件
mniDelStudentById.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteStudentByIdFrame("");
}
});
// 【按班级删除学生记录】菜单项单击事件
mniDelStudentsByClass.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteStudentsByClassFrame("");
}
});
// 【按系部删除学生记录】菜单项单击事件
mniDelStudentsByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new DeleteStudentsByDepartmentFrame("");
}
});
// 【编辑学生记录】菜单项单击事件
mniEditStudent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new EditStudentFrame("");
}
});
// 【浏览学生记录】菜单项单击事件
mniBrowseStudent.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
new BrowseStudentFrame("");
}
});
// 【帮助】菜单单击事件
mniHelp.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
try {
Runtime.getRuntime().exec("cmd /c start help/帮助文档.chm");
} catch (IOException e1) {
JOptionPane.showMessageDialog(null, e1.getMessage(), "学生信息管理系统", JOptionPane.ERROR_MESSAGE);
}
}
});
// 【关于】菜单单击事件
mniAbout.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
JOptionPane.showMessageDialog(null,
"开发人员：" + status.getCollege() + "_" + status.getAuthor() + "\n联系电话：" + status.getTelephone()
+ "\n电子邮箱：" + status.getEmail(),
"学生信息管理系统" + status.getVersion(), JOptionPane.INFORMATION_MESSAGE);
}
});
// 工具栏按钮单击事件
// 【设置学校信息】按钮
btnSetCollege.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new SetCollegeInfoFrame("");
}
});
// 【修改密码】按钮
btnChangePassword.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new ChangePasswordFrame("");
}
});
// 【浏览】按钮
btnBrowseStudent.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new BrowseStudentFrame("");
}
});
// 【查询】按钮
btnFindStudentById.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new FindStudentByIdFrame("");
}
});
// 【统计】按钮
btnCountByDepartment.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
new CountStudentsByDepartmentFrame("");
}
});
// 【退出】按钮
btnExit.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
exitSystem();
}
});
}
/**
* 退出系统
*/
private void exitSystem(){
int choice = JOptionPane.showConfirmDialog(this,
"您是否要退出系统？","学生信息管理系统",JOptionPane.YES_NO_OPTION);
if (choice == JOptionPane.YES_OPTION){
System.exit(0);
}else{
//卸载当前窗口
dispose();
//重新显示主窗口
Application.mainFrame = new MainFrame("学生信息管理系统" + status.getVersion());
}
}
/**
* 设置状态栏信息
*/
public void setStatusBar() {
// 创建状态服务对象
statusService = new StatusServiceImpl();
// 获取状态栏对象
status = statusService.findStatusById(1);
// 设置状态栏标签
lblStatusBar.setText(
status.getCollege() + "学生信息管理系统" + status.getVersion() + " 作者：" + status.getAuthor() + " 地址："
+ status.getAddress() + " 电话：" + status.getTelephone() + " 邮箱：" + status.getEmail());
}
public static void main(String[] args) {
StatusService statusService = new StatusServiceImpl();
Status status = statusService.findStatusById(1);
Application.mainFrame = new MainFrame("学生信息管理系统" + status.getVersion());
}
}
这里有两种方法进行编写，但是有一种比较困难，所以我们采取了另一种方法。
2、用户注册窗口RegisterFrame
package net.lsl.student.gui;
import net.lsl.student.app.Application;
import net.lsl.student.bean.User;
import net.lsl.student.service.UserService;
import net.lsl.student.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
import java.sql.Timestamp;
import java.util.Date;
/**
-
功能：注册窗口
-
作者：李世兰
-
日期：2019年6月20日09:32:47
*/
public class RegisterFrame extends JFrame {
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblTelephone;private JTextField txtUsername;
private JTextField txtTelephone;
private JPasswordField txtPassword;private JButton btnSubmit;
private JButton btnCancel;
private JButton btnLogin;private JPanel panel;
private JPanel panel1;
private JPanel panel2;
private JPanel panel3;
private JPanel panel4;private String username;
private String password;
private String telephone;
private Date registerTime;/**
- 构造方法
- @param title
*/
public RegisterFrame(String title) {
super(title);
initGUI();
}/**
-
初始化图形用户界面
*/
private void initGUI() {
//创建组件（面板与控件）
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();lblUsername = new JLabel(“用户名：”);
lblPassword = new JLabel(“密 码：”);
lblTelephone = new JLabel(“电 话：”);
txtUsername = new JTextField("", 15);
txtPassword = new JPasswordField("", 15);
txtTelephone = new JTextField("", 15);
btnSubmit = new JButton(“提交[S]”);
btnCancel = new JButton(“取消[C]”);
btnLogin = new JButton(“登录[L]”);//将控件添加到四个小面板
panel1.add(lblUsername);
panel1.add(txtUsername);
panel2.add(lblPassword);
panel2.add(txtPassword);
panel3.add(lblTelephone);
panel3.add(txtTelephone);
panel4.add(btnSubmit);
panel4.add(btnCancel);
panel4.add(btnLogin);//设置打面板布局，将四个小面板添加到大面板
panel.setLayout(new GridLayout(4, 1));
panel.add(panel1);
panel.add(panel2);
panel.add(panel3);
panel.add(panel4);//设置窗口大小
setSize(350, 300);
//设置窗口屏幕居中
setLocationRelativeTo(null);
//设置窗口不可调整大小
setResizable(false);
//设置窗口刚好容纳组件
pack();
//设置窗口标题
setTitle(“用户注册”);
//设置窗口可见
setVisible(true);
//设置窗口默认关闭操作
//setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);//注册窗口监听器
addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent e) {
dispose();
//让登陆窗口可见
Application.loginFrame.setVisible(true);}});
//【提交】按钮单击事件处理
btnSubmit.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
register();
}
});
//【提交按钮事件处理
btnSubmit.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
register();
}
}
});//【取消】按钮单击事件处理
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
//显示登录窗口
Application.loginFrame.setVisible(true);
//卸载当前窗口
dispose();
}
});
//【登录】按钮单击事件处理
btnLogin.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent arg0) {
//显示登录窗口
Application.loginFrame.setVisible(true);
//卸载当前窗口
dispose();
}
});//【用户名】文本框按钮事件处理
txtUsername.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
txtPassword.requestFocus();
}
}
});
//【密码】文本框按钮事件处理
txtPassword.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10){
txtTelephone.requestFocus();
}
}
});
//【电话】文本框按钮事件处理
txtTelephone.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER){
btnSubmit.requestFocus();
}
}
});
}
private void register(){
//获取用户名
username = txtUsername.getText().trim();
//获取密码
password = new String(txtPassword.getPassword());
//获取电话
telephone =txtTelephone.getText().trim();
//定义当前时间为注册时间
registerTime = new Timestamp(System.currentTimeMillis());//定义用户服务对象 UserService userService = new UserServiceImpl(); //创建用户 User user = new User(); user.setUsername(username); user.setPassword(password); user.setTelephone(telephone); user.setRegisterTime(registerTime); //添加用户 int count = userService.addUser(user); //判断是否添加成功 if (count > 0){ setVisible(false); JOptionPane.showMessageDialog(null,"恭喜！注册成功！","学生信息管理系统",JOptionPane.INFORMATION_MESSAGE); setVisible(true); }else{ JOptionPane.showMessageDialog(null,"遗憾！注册失败！","学生信息管理系统",JOptionPane.INFORMATION_MESSAGE); }}
/**- 主方法
- @param args
*/
public static void main(String[] args) {
Application.registerFrame = new RegisterFrame("");
}
}
3、用户登录窗口LoginFrame
package net.lsl.student.gui;
import net.lsl.student.app.Application;
import net.lsl.student.bean.Status;
import net.lsl.student.bean.User;
import net.lsl.student.service.StatusService;
import net.lsl.student.service.UserService;
import net.lsl.student.service.impl.StatusServiceImpl;
import net.lsl.student.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
/**
-
功能：登陆窗口
-
作者：李世兰
-
日期：2019年6月20日10:12:15
*/
public class LoginFrame extends JFrame {
private String username;
private String password;private JLabel lblUsername;
private JLabel lblPassword;
private JTextField txtUsername;
private JPasswordField txtPassword;private JButton btnOK;
private JButton btnCancel;
private JButton btnRegister;
private JPanel panel,panel1,panel2,panel3;public LoginFrame(String title) {
super(title);
initGUI();
}private void initGUI() {
//实例化组件（面板与控件）
panel = (JPanel) getContentPane();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();lblUsername = new JLabel("用户名："); lblPassword = new JLabel("密 码:"); txtUsername = new JTextField(15); txtPassword = new JPasswordField(15); btnOK = new JButton("确定[O]"); btnCancel = new JButton("取消[C]"); btnRegister = new JButton("注册[R]"); //将控件添加到三个小面板 panel1.add(lblUsername); panel1.add(txtUsername); panel2.add(lblPassword); panel2.add(txtPassword); panel3.add(btnOK); panel3.add(btnCancel); panel3.add(btnRegister); //设置主面板为三行一列的网格布局 panel.setLayout(new GridLayout(3,1)); //将三个小面板依次添加到主面板 panel.add(panel1); panel.add(panel2); panel.add(panel3); //设置按钮的热键字母 btnOK.setMnemonic(KeyEvent.VK_0); btnCancel.setMnemonic(KeyEvent.VK_C); btnRegister.setMnemonic(KeyEvent.VK_R); //设置密码框回显字符 txtPassword.setEchoChar('*'); //设置窗口大小 setSize(500,600); //设置窗口居中 setLocationRelativeTo(null); //设置出窗口不可调整大小 setResizable(false); //设置窗口刚好容纳主键 pack(); //设置窗口可见 setVisible(true); //设置窗口默认关闭操作 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //【确定】按钮单击事件处理 btnOK.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { login(); } }); //【确定】按钮事件处理 btnOK.addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ENTER){ login(); } } }); //【用户名】文本框案件事件处理 txtUsername.addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { //判断是否按下回车键 if (e.getKeyCode() == KeyEvent.VK_ENTER){ //让密码文本框获取焦点 txtPassword.requestFocus(); } } }); //【注册】按钮单击事件处理 btnRegister.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { //隐藏登录窗口 Application.registerFrame = new RegisterFrame("用户注册"); } }); //【密码】文本框按钮事件处理 txtPassword.addKeyListener(new KeyAdapter() { @Override public void keyPressed(KeyEvent e) { if (e.getKeyCode() == KeyEvent.VK_ENTER){ login(); } } }); //【取消】按钮单击事件处理 btnCancel.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { System.exit(0); } });}
///**
- 登录方法
*/
private void login(){
username = txtUsername.getText().trim();
//获取密码
password = new String(txtPassword.getPassword());//创建用户服务对象 UserService userService = new UserServiceImpl(); //调用登录方法，返回登录用户对象 User user = userService.login(username,password); //判断登录用户身份为空，决定登录是否成功 if (user != null){ //隐藏登录窗口 Application.loginFrame.setVisible(false); //定义状态服务对象 StatusService statusService = new StatusServiceImpl(); //获取状态对象 Status status = statusService.findStatusById(1); //保存登录用户的信息 Application.id = user.getId(); Application.username = user.getUsername(); Application.password = user.getPassword(); //提示用户登录成功 JOptionPane.showMessageDialog(null, "欢迎使用学生信息管理系统" +status.getVersion(), "用户登录",JOptionPane.INFORMATION_MESSAGE ); //显示系统主窗口 Application.mainFrame = new MainFrame(""); //释放登录窗口 Application.loginFrame.dispose(); }else{ //隐藏登录窗口 Application.loginFrame.setVisible(false); //提示用户登录失败，要重新输入用户名或密码 JOptionPane.showMessageDialog(null,"用户名或密码错误，请重新输入!", "用户登录",JOptionPane.ERROR_MESSAGE); //显示登录窗口 Application.loginFrame.setVisible(true); //用户名文本框内容全选 txtUsername.selectAll(); //密码文本框内容全选 txtPassword.selectAll(); //用户名文本框获取焦点 txtUsername.requestFocus(); }}
public static void main(String[] args) {
Application.loginFrame = new LoginFrame(“用户登录”);
} - 登录方法
}
这里的代码是一次又一次进行完善的，经过很多次修改添加。在写的过程中会因为一些小细节而导致错误，有时候自己找一找可以自己解决，但是有时候自己却找不到错误。只能通过请教老师来解决这些问题。
4、接下来就写了设置学校信息窗口SetCollegeInfoFrame
package net.lsl.student.gui;
import net.lsl.student.bean.College;
import net.lsl.student.service.CollegeService;
import net.lsl.student.service.impl.CollegeServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyEvent;
import java.sql.Timestamp;
import java.text.ParseException;
import java.text.SimpleDateFormat;
/**
-
功能：设置学校信息
-
作者：李世兰
-
日期：2019年6月21日18:49:37
*/
public class SetCollegeInfoFrame extends JFrame {
//面板
JPanel panel;
JPanel pnlNorth;
JPanel panel1;
JPanel panel2;
JPanel panel3;
JPanel panel4;
JPanel panel5;
JPanel pnlCenter;
JPanel pnlSouth;//标签
JLabel lblName;
JLabel lblPresident;
JLabel lblStartTime;
JLabel lblTelephone;
JLabel lblEmail;
JLabel lblAddress;
JLabel lblProfile;//按钮
JButton btnSave;
JButton btnExit;//文本框与文本区
JTextField txtName;
JTextField txtPresident;
JTextField txtStartTime;
JTextField txtTelephone;
JTextField txtEmail;
JTextField txtAddress;
JTextArea txtProfile;//滚动面板
JScrollPane scrollPane;//学校服务
private CollegeService collegeService;
private College college;
private int id = 1;public SetCollegeInfoFrame(String title){
super(title);
initGUI();
}//初始化用户界面
private void initGUI() {
//创建组件（面板与控件）
panel = (JPanel) getContentPane();
pnlNorth = new JPanel();
panel1 = new JPanel();
panel2 = new JPanel();
panel3 = new JPanel();
panel4 = new JPanel();
panel5 = new JPanel();
pnlCenter = new JPanel();
pnlSouth = new JPanel();lblName = new JLabel("学校名称："); lblPresident = new JLabel("校 长："); lblStartTime = new JLabel("建校时间："); lblTelephone = new JLabel("联系电话："); lblEmail = new JLabel("电子邮箱："); lblAddress = new JLabel("通讯地址："); lblProfile = new JLabel("学校简介："); txtName = new JTextField(30); txtPresident = new JTextField(11); txtStartTime = new JTextField(12); txtTelephone = new JTextField(11); txtEmail = new JTextField(12); txtAddress = new JTextField(30); txtProfile = new JTextArea(5,37); txtProfile.setLineWrap(true); scrollPane = new JScrollPane(txtProfile,ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_NEVER); btnSave = new JButton("保存[S]"); btnSave.setMnemonic(KeyEvent.VK_X); btnExit = new JButton("退出[X]"); btnExit.setMnemonic(KeyEvent.VK_X); //设置大面板布局，将北面板、中面板与南面板添加到大面板 panel.setLayout(new BorderLayout()); panel.add(pnlNorth,"North"); panel.add(pnlCenter,"Center"); panel.add(pnlSouth,"South"); //设置北面板布局，添加五个小面板 pnlNorth.setLayout(new GridLayout(5,1)); pnlNorth.add(panel1); pnlNorth.add(panel2); pnlNorth.add(panel3); pnlNorth.add(panel4); pnlNorth.add(panel5); //将控件依次添加到五个小面板 panel1.add(lblName); panel1.add(txtName); panel2.add(lblPresident); panel2.add(txtPresident); panel2.add(lblStartTime); panel2.add(txtStartTime); panel3.add(lblTelephone); panel3.add(txtTelephone); panel3.add(lblEmail); panel3.add(txtEmail); panel4.add(lblAddress); panel4.add(txtAddress); panel5.add(lblProfile); //将滚动面板添加到中面板 pnlCenter.add(scrollPane); //将两个按钮添加到南面板 pnlSouth.add(btnSave); pnlSouth.add(btnExit); //创建学习服务对象 collegeService = new CollegeServiceImpl(); //获取学校对象 college = collegeService.findCollegeById(id); //利用学校对象属性值设置相应控件的内容 txtName.setText(college.getName()); txtPresident.setText(college.getPresident()); txtStartTime.setText(college.getStartTime().toString()); txtTelephone.setText(college.getTelephone()); txtEmail.setText(college.getEmail()); txtAddress.setText(college.getAddress()); txtProfile.setText(college.getProfile()); //设置窗口大小 setSize(450,400); //设置窗口屏幕居中 setLocationRelativeTo(null); //设置窗口不可调整大小 setResizable(false); //设置窗口刚好容纳组件 pack(); //设置窗口标题 setTitle("设置学校信息"); //设置窗口可见 setVisible(true); //设置窗口默认关闭操作 setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //【关闭】按钮单击事件处理 btnExit.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent e) { //关闭窗口 dispose(); } }); //【保存】按钮单击事件处理 btnSave.addActionListener(new ActionListener() { @Override public void actionPerformed(ActionEvent event) { try { college.setName(txtName.getText()); college.setPresident(txtPresident.getText()); college.setStartTime(new Timestamp(new SimpleDateFormat("yyyy-mm-dd").parse(txtStartTime.getText().toString()).getTime())); college.setTelephone(txtTelephone.getText()); college.setEmail(txtEmail.getText()); college.setAddress(txtAddress.getText()); college.setProfile(txtProfile.getText()); //更新学校信息 collegeService.updateCollege(college); //提示用户更新成功 JOptionPane.showMessageDialog(null,"更新数据成功！"); } catch (ParseException e) { JOptionPane.showMessageDialog(null,"更新数据失败！"); } } });}
public static void main(String[] args) {
new SetCollegeInfoFrame("");
}
}
5、修改用户密码窗口ChangePasswordFrame
package net.lsl.student.gui;
import net.lsl.student.app.Application;
import net.lsl.student.bean.User;
import net.lsl.student.service.UserService;
import net.lsl.student.service.impl.UserServiceImpl;
import javax.swing.;
import java.awt.;
import java.awt.event.*;
/**
-
功能：修改用户密码
-
作者：李世兰
-
日期：2019年6月21日20:03:40
*/
public class ChangePasswordFrame extends JFrame {/**
- 面板
/
private JPanel panel;
private JPanel pnlRow1;
private JPanel pnlRow2;
private JPanel pnlRow3;
private JPanel pnlRow4;
private JPanel pnlRow5;
/* - 标签
/
private JLabel lblUsername;
private JLabel lblPassword;
private JLabel lblNewPassword1;
private JLabel lblNewPassword2;
/* - 文本框
/
private JTextField txtUsername;
private JPasswordField txtPassword;
private JPasswordField txtNewPassword1;
private JPasswordField txtNewPassword2;
/* - 按钮
/
private JButton btnOK;
private JButton btnCancel;
/* - 用户服务对象
*/
private UserService userService;
/**
- 构造方法
- @param title
*/
public ChangePasswordFrame(String title) {
super(title);
initGUI();
}
/**
-
初始化用户界面
*/
private void initGUI() {
// 创建组件（面板与控件）
panel = (JPanel) getContentPane();
pnlRow1 = new JPanel();
pnlRow2 = new JPanel();
pnlRow3 = new JPanel();
pnlRow4 = new JPanel();
pnlRow5 = new JPanel();lblUsername = new JLabel(“用户名：”);
lblPassword = new JLabel(“旧密码：”);
lblNewPassword1 = new JLabel(“新密码：”);
lblNewPassword2 = new JLabel(“确 认：”);txtUsername = new JTextField(20);
txtUsername.setEditable(false);
txtPassword = new JPasswordField(20);
txtNewPassword1 = new JPasswordField(20);
txtNewPassword2 = new JPasswordField(20);btnOK = new JButton(“确定[O]”);
btnOK.setMnemonic(KeyEvent.VK_O);
btnCancel = new JButton(“取消[C]”);
btnCancel.setMnemonic(KeyEvent.VK_C);// 设置大面板布局，添加五个小面板
panel.setLayout(new GridLayout(5, 1));
panel.add(pnlRow1);
panel.add(pnlRow2);
panel.add(pnlRow3);
panel.add(pnlRow4);
panel.add(pnlRow5);// 将控件添加到五个小面板
pnlRow1.add(lblUsername);
pnlRow1.add(txtUsername);
pnlRow2.add(lblPassword);
pnlRow2.add(txtPassword);
pnlRow3.add(lblNewPassword1);
pnlRow3.add(txtNewPassword1);
pnlRow4.add(lblNewPassword2);
pnlRow4.add(txtNewPassword2);
pnlRow5.add(btnOK);
pnlRow5.add(btnCancel);// 设置窗口不可调整大小
setResizable(false);
// 设置窗口刚好容纳组件
pack();
// 设置窗口屏幕居中
setLocationRelativeTo(null);
// 设置窗口标题
setTitle(“修改用户密码”);
// 设置窗口可见
setVisible(true);
// 设置窗口默认关闭操作
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);// 设置控件属性
txtUsername.setEditable(false);
txtUsername.setText(Application.username);// 【取消】按钮单击事件处理
btnCancel.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
dispose();
}
});// 【确定】按钮单击事件处理
btnOK.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
changePassword();
}
});// 【确定】按钮按键事件处理
btnOK.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == 10) {
changePassword();
}
}
});// 【用户名】文本框按键事件处理
txtUsername.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtPassword.requestFocus();
}
}
});// 【密码】文本框按键事件处理
txtPassword.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtNewPassword1.requestFocus();
}
}
});// 【新密码1】文本框按键事件处理
txtNewPassword1.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
txtNewPassword2.requestFocus();
}
}
});// 【新密码2】文本框按键事件处理
txtNewPassword2.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
btnOK.requestFocus();
}
}
});
}
/**
-
修改密码方法
*/
private void changePassword() {
// 获取用户信息
int id = Application.id;
String username = Application.username;// 保存用户输入的旧密码与两个新密码
String password = new String(txtPassword.getPassword());
String newPassword1 = new String(txtNewPassword1.getPassword());
String newPassword2 = new String(txtNewPassword2.getPassword());// 创建学生服务对象
userService = new UserServiceImpl();if (userService.login(username, password) == null) {
JOptionPane.showMessageDialog(null, “旧密码错误，请重新输入！”, “错误提示”, JOptionPane.ERROR_MESSAGE);
txtPassword.requestFocus();
txtPassword.selectAll();
} else if (newPassword1.equals("")) {
JOptionPane.showMessageDialog(null, “新密码不能为空！”, “错误提示”, JOptionPane.ERROR_MESSAGE);
txtNewPassword1.requestFocus();
} else if (newPassword2.equals("")) {
JOptionPane.showMessageDialog(null, “确认密码不能为空！”, “错误提示”, JOptionPane.ERROR_MESSAGE);
txtNewPassword2.requestFocus();
} else if (!newPassword1.equals(newPassword2)) {
JOptionPane.showMessageDialog(null, “两次密码不一致，请重新输入！”, “错误提示”, JOptionPane.ERROR_MESSAGE);
txtNewPassword1.setText("");
txtNewPassword2.setText("");
txtNewPassword1.requestFocus();
} else {
// 按标识符获取用户
User user = userService.findUserById(id);
// 修改用户的密码属性
user.setPassword(newPassword1);
// 调用用户服务对象的更新方法，更新用户信息
int count = userService.updateUser(user);
if (count > 0) {
JOptionPane.showMessageDialog(null, “密码修改成功！”, “设置密码”, JOptionPane.INFORMATION_MESSAGE);
dispose();
} else {
JOptionPane.showMessageDialog(null, “密码修改失败！”, “设置密码”, JOptionPane.WARNING_MESSAGE);
}
}
}
/**
- 主方法
- @param args
*/
public static void main(String[] args) {
Application.id = 1;
Application.username = “李刚”;
new ChangePasswordFrame("");
}
}
今天感觉好累啊，在编写的过程中遇到了很多的问题。有时候自己找不到解决的办法就感觉非常烦躁。但是也没办法，依然要继续的努力敲代码。明天继续加油吧！
- 面板