大家好，又见面了，我是你们的朋友全栈君。
代码语言：javascript复制最近写完了数据库的课程设计，想把整个源码的编辑过程发出来。程序很简单，需要有很多完善的地方，在这里，我想和大家分享写这个程序的心路历程。
首先，在开始写程序之前。我们需要先写一些工具类，来辅助完成整个程序的构建，在这里我把连接jdbc的代码放在了一个包下面。
如下图：
在这里我们先来写最基本的类，jdbcDrive，这是负责和数据库进行连接，并且执行语句的类
代码语言：javascript复制public class jdbcDrive {
public static Connection connection;
public static Statement statement;
public static ResultSet resultset;
public static void jdbcConnection(){ try {
connection = DriverManager.getConnection(jdbc.dbURL, jdbc.userName,jdbc.userPwd);
System.out.println("连接数据库成功！");
} catch (Exception e) {
System.out.print("SQL Server连接失败！");
}
}
public static void jdbcConnectionClose(){
try {
connection.close();
System.out.println("数据库连接成功关闭");
} catch (SQLException e) {
System.out.println("数据库连接关闭失败");
}
}
public static void jdbcExecuteUpdate(String s) throws SQLException{
jdbcConnection();
statement=connection.createStatement();
statement.executeUpdate(s);
}
public static void jdbcExecuteQuery(String s) throws SQLException{
jdbcConnection();
statement=connection.createStatement();
resultset=statement.executeQuery(s);
}
public static void main(String [] args) {
}
}在这里我选择的是SQL SERVER 2014，它的jdbc版本已经不需要加载数据库了，可以直接进行连接，在这里分为四个方法。其中两个是负责，数据库的连接和释放。jdbcExecuteUpdate负责传递SQL的增加，修改，删除，不需要有结果集的语句。jdbcExecuteQuery负责进行jdbc的查询，将查询的结果放在resultset里面。Connection类是负责进行数据库的连接，Statement 负责传递查询语句。resultset是结果集，负责保存储存的信息。
在进行数据的连接的时候，需要向数据库传递参数。我把参数放在了一个接口里面。
代码语言：javascript复制public interface jdbc {
String dbURL = "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=Dormitory";
String userName = "sa";
String userPwd = "123456";
}写完基本的jdbc类之后，我们在进行整个系统的界面搭建。
设计主界面的时候，用到以下几个类，第一个是用于放置菜单选项的JMenuBar，它是放置JMenu的容器，而JMenu是房子JMenuItem的容器。具体的构建过程就是，在JFrame里添加JMenu，用来表示要放置的菜单选项，在JMenu里面放置JMeunItem用来表示菜单的子选项。其中，用了JLabel来存放图片。各个JMenuItem的监听事件放在了一个单独的包里面。具体的搭建界面如下：
public class Login extends JFrame {
private JButton loginButton,exitButton;
private JLabel userNameLabel,passwordLabel;
private JTextField userNameText;
private JPasswordField passwordText;
private HandleAction handleAction;
private static JPanel loginPanel;
private ManagementUi MainUi;
private Toolkit toolKit=null;
private Dimension screenSize=null;
public static personManage nowPeople;
public Login(){
Init();
}
public void Init(){
//获取当前窗口，并且获取屏幕的尺寸
toolKit=Toolkit.getDefaultToolkit();
screenSize=toolKit.getScreenSize();
//加载封装了图片的Panel子类，并添加到当前JFrame容器里面
loginPanel=new LoginPanel();
loginPanel.setLayout(null);
add(loginPanel);
//将整个图框居中
setBounds(screenSize.width/2-loginPanel.getWidth()/2
,screenSize.height/2-loginPanel.getHeight()/2
,loginPanel.getWidth(),loginPanel.getHeight());
handleAction=new HandleAction();
this.setIconImage(new ImageIcon("resource/picture.png").getImage());
//向loginPanel容器加入两个Jlabel,两个按钮，一个文本框，一个密码框
userNameLabel=new JLabel("用户名");
userNameLabel.setBounds(100, 120, 200, 18);
loginPanel.add(userNameLabel);
userNameText=new JTextField();
userNameText.setBounds(150, 120, 150, 18);
loginPanel.add(userNameText);
passwordLabel=new JLabel("密码");
passwordLabel.setBounds(100, 180, 200, 18);
loginPanel.add(passwordLabel);
passwordText=new JPasswordField();
passwordText.setBounds(150, 180, 150, 18);
loginPanel.add(passwordText);
loginButton=new JButton("登录");
loginButton.setBounds(150, 230, 60, 18);
loginPanel.add(loginButton);
exitButton=new JButton("退出");
exitButton.setBounds(230, 230, 60, 18);
loginPanel.add(exitButton);
exitButton.addActionListener(handleAction);
loginButton.addActionListener(handleAction);
setTitle("宁悦宿舍管理系统");
this.setResizable(false);
setVisible(true);
setDefaultCloseOperation(this.EXIT_ON_CLOSE);
}
private class HandleAction implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource()==loginButton){
String pass=new String(passwordText.getPassword());
if(jdbcLogin.Judge(userNameText.getText(),pass)){
nowPeople=new personManage(userNameText.getText(),null,null,pass);
MainUi=new ManagementUi();
Login.this.setVisible(false);
}else{
JOptionPane.showMessageDialog(Login.this,"不是系统的合法用户或密码错误" );
}
}else if(e.getSource()==exitButton) {
Login.this.dispose();
}
}
}
public static void main(String [] args){
Login in=new Login();
}
}
class LoginPanel extends JPanel {
protected ImageIcon icon = new ImageIcon("resource/login.jpg");
public int width = icon.getIconWidth(), height = icon.getIconHeight();
public LoginPanel() {
super();
setSize(width, height);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Image img = icon.getImage();
g.drawImage(img, 0, 0, icon.getIconWidth(),
icon.getIconHeight(), icon.getImageObserver());
}
}搭建完界面之后，我们按这个顺序来进行代码编码，首先，编写管理员的登录界面，然后写学生的管理界面，在写宿舍的管理界面，最后写调宿的管理界面。
下面先来看登录界面的的截图：
下面是整个登录界面的源代码：
代码语言：javascript复制public class Login extends JFrame {
private JButton loginButton,exitButton;
private JLabel userNameLabel,passwordLabel;
private JTextField userNameText;
private JPasswordField passwordText;
private HandleAction handleAction;
private static JPanel loginPanel;
private ManagementUi MainUi;
private Toolkit toolKit=null;
private Dimension screenSize=null;
public static personManage nowPeople;
public Login(){
Init();
}
public void Init(){
//获取当前窗口，并且获取屏幕的尺寸
toolKit=Toolkit.getDefaultToolkit();
screenSize=toolKit.getScreenSize();
//加载封装了图片的Panel子类，并添加到当前JFrame容器里面
loginPanel=new LoginPanel();
loginPanel.setLayout(null);
add(loginPanel);
//将整个图框居中
setBounds(screenSize.width/2-loginPanel.getWidth()/2
,screenSize.height/2-loginPanel.getHeight()/2
,loginPanel.getWidth(),loginPanel.getHeight());
handleAction=new HandleAction();
this.setIconImage(new ImageIcon("resource/picture.png").getImage());
//向loginPanel容器加入两个Jlabel,两个按钮，一个文本框，一个密码框
userNameLabel=new JLabel("用户名");
userNameLabel.setBounds(100, 120, 200, 18);
loginPanel.add(userNameLabel);
userNameText=new JTextField();
userNameText.setBounds(150, 120, 150, 18);
loginPanel.add(userNameText);
passwordLabel=new JLabel("密码");
passwordLabel.setBounds(100, 180, 200, 18);
loginPanel.add(passwordLabel);
passwordText=new JPasswordField();
passwordText.setBounds(150, 180, 150, 18);
loginPanel.add(passwordText);
loginButton=new JButton("登录");
loginButton.setBounds(150, 230, 60, 18);
loginPanel.add(loginButton);
exitButton=new JButton("退出");
exitButton.setBounds(230, 230, 60, 18);
loginPanel.add(exitButton);
exitButton.addActionListener(handleAction);
loginButton.addActionListener(handleAction);
setTitle("宁悦宿舍管理系统");
this.setResizable(false);
setVisible(true);
setDefaultCloseOperation(this.EXIT_ON_CLOSE);
}
private class HandleAction implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource()==loginButton){
String pass=new String(passwordText.getPassword());
if(jdbcLogin.Judge(userNameText.getText(),pass)){
nowPeople=new personManage(userNameText.getText(),null,null,pass);
MainUi=new ManagementUi();
Login.this.setVisible(false);
}else{
JOptionPane.showMessageDialog(Login.this,"不是系统的合法用户或密码错误" );
}
}else if(e.getSource()==exitButton) {
Login.this.dispose();
}
}
}
public static void main(String [] args){
Login in=new Login();
}
}
class LoginPanel extends JPanel {
protected ImageIcon icon = new ImageIcon("resource/login.jpg");
public int width = icon.getIconWidth(), height = icon.getIconHeight();
public LoginPanel() {
super();
setSize(width, height);
}
protected void paintComponent(Graphics g) {
super.paintComponent(g);
Image img = icon.getImage();
g.drawImage(img, 0, 0, icon.getIconWidth(),
icon.getIconHeight(), icon.getImageObserver());
}
}在的登录的时候，需要连接数据库，在登录模块，我专门为它建立了一个数据库的连接类，来进行数据库的建立。
代码语言：javascript复制public class jdbcLogin {
private static HashMap<String,String> people=new HashMap<String,String>();
public static boolean Judge(String user,String pass){
String SQL = "SELECT * FROM personManage";
boolean flag=false;
try {
jdbcDrive.jdbcConnection();
jdbcDrive.statement=jdbcDrive.connection.createStatement();
jdbcDrive.resultset=jdbcDrive.statement.executeQuery(SQL);
while (jdbcDrive.resultset.next()) {
people.put(jdbcDrive.resultset.getString(1).trim(),jdbcDrive.resultset.getString(4).trim());
}
} catch (SQLException e) {
e.printStackTrace();
}finally{
jdbcDrive.jdbcConnectionClose();
}
if(people.containsKey(user)){
if(people.get(user).equals(pass)){
flag=true;
}
}else{
flag=false;
}
return flag;
}
}如果数据库存在对应的账号，则返回true，让用户登录，否则返回false。
数据库建立好了之后，需要进行管理人员的创立，修改，删除。
管理员的界面用表的形式，来进行相应的管理，管理的过程中，点击表中的数据，会相应的显示在下面的文本框里，在这里进行增删改查。每次完成曾删改查，都需要点击查询进行刷新，下面是整体的代码。
代码语言：javascript复制public class personManageUi {
private JFrame mainJframe;
private Container con;
private JScrollPane JSpane;
private MyJTable DataTable;
private String [] names={"管理员账号","管理员姓名","管理员性别","管理人员密码"};
private JButton btn_Query,btn_Modify,btn_Add,btn_Delete;
private JPanel jpn;
private JPanel messageJpn;
private JTextField nameText,passText,sexText,idText;
private personManage personChange;//保存要修改的数据的信息
public personManageUi(){
mainJframe=new JFrame("管理员管理");
mainJframe.setSize(800, 600);
mainJframe.setVisible(true);
mainJframe.setResizable(false);
mainJframe.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize();
mainJframe.setLocation(screenSize.width/2-400, screenSize.height/2-300);
con=mainJframe.getContentPane();
con.setLayout(new GridLayout(3,1));
DataTable=new MyJTable();
DefaultTableModel df=new DefaultTableModel(names,0);
df.setRowCount(20);
DataTable.setModel(df);
DataTable.addMouseListener(new table_selectActionListener());
JSpane=new JScrollPane(DataTable);
con.add(JSpane);
messageJpn=new JPanel();
messageJpn.setLayout(new GridBagLayout());
setComponent(new JLabel("管理人员账号:"),0,0,1,1,false);
idText=new JTextField();
setComponent(idText,1,0,1,150,false);
setComponent(new JLabel("管理人员姓名:"),2,0,1,1,false);
nameText=new JTextField();
setComponent(nameText,3,0,1,150,true);
setComponent(new JLabel("管理人员性别:"),0,1,1,1,false);
sexText=new JTextField();
setComponent(sexText,1,1,1,150,false);
setComponent(new JLabel("管理人员密码:"),2,1,1,1,false);
passText=new JTextField();
setComponent(passText,3,1,1,150,true);
con.add(messageJpn);
jpn=new JPanel();
jpn.setLayout(new FlowLayout());
con.add(jpn);
btn_Add=new JButton("添加");
btn_Add.addActionListener(new btn_AddActionListener());
jpn.add(btn_Add);
jpn.add(new JLabel(" "));
btn_Query=new JButton("查询");
btn_Query.addActionListener(new btn_QueryActionListener());
jpn.add(btn_Query);
jpn.add(new JLabel(" "));
btn_Modify=new JButton("修改");
btn_Modify.addActionListener(new btn_ModifyActionListener());
jpn.add(btn_Modify);
jpn.add(new JLabel(" "));
btn_Delete=new JButton("删除");
btn_Delete.addActionListener(new btn_DeleteActionListener());
jpn.add(btn_Delete);
}
/*
* 完成查询按钮的监听事件
*/
private class btn_QueryActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
jdbcPersonManage jp=new jdbcPersonManage(null);
personManage people;
try {
jp.personQuery();
} catch (SQLException e1) {
JOptionPane.showMessageDialog(mainJframe,"无法连接到数据库" );
}finally{
jdbcDrive.jdbcConnectionClose();
}
ArrayList<personManage> personlist=jp.getPersonlist();
for(int i=0;i<personlist.size();i ){
people=personlist.get(i);
String [] data={people.getPersonManageId(),people.getPersonManageName(),
people.getPersonManageSex(),"**********"};
for(int j=0;j<4;j ){
DataTable.setValueAt(data[j], i, j);
}
}
for(int i=0;i<4;i ){
DataTable.setValueAt("", personlist.size(), i);
}
}
}
/*
* 完成对修改按钮的监听事件
*/
private class btn_ModifyActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
jdbcPersonManage jpm=new jdbcPersonManage(null);
try{
if(personChange.getPersonManageName()!=nameText.getText()){
jpm.personModify(personChange.getPersonManageId(),
"personManageName",nameText.getText());
}
if(personChange.getPersonManageSex()!=sexText.getText()){
jpm.personModify(personChange.getPersonManageId()
, "personManageSex", sexText.getText());
}
if(personChange.getPersonManagepassword()!=passText.getText()){
jpm.personModify(personChange.getPersonManagepassword()
, "personManagepassword",passText.getText());
}
JOptionPane.showMessageDialog(mainJframe,"修改成功" );
idText.setText("");
nameText.setText("");
sexText.setText("");
passText.setText("");
}catch(Exception e1){
System.out.println("修改失败");
JOptionPane.showMessageDialog(mainJframe,"修改失败" );
}finally{
jdbcDrive.jdbcConnectionClose();
}
}
}
/*
* 完成对表格的监听事件
*/
private class table_selectActionListener extends MouseAdapter{
public void mouseClicked(MouseEvent event)
{
int row = DataTable.rowAtPoint(event.getPoint());
if(row!=-1){
personChange=new personManage.personManageBuild()
.addManageId((String) DataTable.getValueAt(row, 0))
.addManageName((String) DataTable.getValueAt(row, 1))
.addManageSex((String) DataTable.getValueAt(row, 2))
.addManagePass((String) DataTable.getValueAt(row, 3))
.CreateManageBuild();
idText.setText(personChange.getPersonManageId());
nameText.setText(personChange.getPersonManageName());
sexText.setText(personChange.getPersonManageSex());
passText.setText(personChange.getPersonManagepassword());
}
}
}
/*
* 完成对增加按钮的监听
*/
private class btn_AddActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
personManage p=new personManage
.personManageBuild()
.addManageId(idText.getText().trim())
.addManageName(nameText.getText().trim())
.addManageSex(sexText.getText().trim())
.addManagePass(passText.getText().trim())
.CreateManageBuild();
jdbcPersonManage jpm;
try {
jpm = new jdbcPersonManage(p);
jpm.personAdd();
idText.setText("");
nameText.setText("");
passText.setText("");
sexText.setText("");
JOptionPane.showMessageDialog(mainJframe,"添加成功" );
} catch (Exception e1) {
JOptionPane.showMessageDialog(mainJframe,"无法连接到数据库" );
}finally{
jdbcDrive.jdbcConnectionClose();
}
}
}
/*
* 完成对删除按钮的监听
*/
private class btn_DeleteActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
personManage p=new personManage
.personManageBuild()
.addManageId(idText.getText().trim())
.CreateManageBuild();
jdbcPersonManage jpm=
new jdbcPersonManage(p);
try {
jpm.personDelete();
idText.setText("");
nameText.setText("");
passText.setText("");
sexText.setText("");
JOptionPane.showMessageDialog(mainJframe, "删除成功");
} catch (SQLException e1) {
e1.printStackTrace();
JOptionPane.showMessageDialog(mainJframe, "删除失败");
}
}
}
private void setComponent(JComponent component, int gridx, int gridy,
int gridwidth, int ipadx, boolean fill) {
final GridBagConstraints gridBagConstrains = new GridBagConstraints();
gridBagConstrains.gridx = gridx;
gridBagConstrains.gridy = gridy;
gridBagConstrains.insets = new Insets(10, 15, 3, 1);
if (gridwidth > 1)
gridBagConstrains.gridwidth = gridwidth;
if (ipadx > 0)
gridBagConstrains.ipadx = ipadx;
if (fill)
gridBagConstrains.fill = GridBagConstraints.HORIZONTAL;
messageJpn.add(component, gridBagConstrains);
}
public static void main(String [] args){
new personManageUi();
}
}学生管理部分实现和这个差不多，需要说一下宿舍管理的部分，在宿舍管理的模块，借助树，来进行完整的修改。
具体的代码如下：
代码语言：javascript复制public class dormitoryUpdateUi extends JFrame{
private JScrollPane JSPane;
private JTree Tree;
private JPanel panel;
private DefaultMutableTreeNode tmpNode,root;
private DefaultTreeModel insert;
private ArrayList<Dormitory> dormitory;
private JTextField id;
private JTextField sex;
private JTextField ynumber;
private JTextField snumber;
private JTextField student;
private JTextField money;
private JTextField note;
private JButton btn_query,btn_Modify,btn_Delete;
private String attribute;
private String changeAttribute;
public dormitoryUpdateUi(){
this.setTitle("宿舍更新");
this.setVisible(true);
this.setSize(800, 600);
this.setResizable(false);
this.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
this.setLocationRelativeTo(null);
this.setLayout(new BorderLayout());
root=new DefaultMutableTreeNode("文赢13号楼 ");
insert=new DefaultTreeModel(root);
Tree=new JTree(root);
Tree.addTreeSelectionListener(new treeSelectActionListener());
JSPane=new JScrollPane(Tree);
this.add(JSPane, BorderLayout.WEST);
panel=new JPanel();
//panel.setPreferredSize(getPreferredSize());
this.add(panel, BorderLayout.CENTER);
panel.setLayout(new GridBagLayout());
setComponent(new JLabel("宿舍号:"),0,0,1,1,false);
id=new JTextField();
id.addActionListener(new jf_ActionListener());
setComponent(id,1,0,3,1,true);
setComponent(new JLabel("住宿性别名:"),0,1,1,1,false);
sex=new JTextField();
sex.addActionListener(new jf_ActionListener());
setComponent(sex,1,1,3,150,true);
setComponent(new JLabel("应住人数:"),0,2,1,1,false);
ynumber=new JTextField();
ynumber.addActionListener(new jf_ActionListener());
setComponent(ynumber,1,2,3,150,true);
setComponent(new JLabel("实住人数:"),0,3,1,1,false);
snumber=new JTextField();
snumber.addActionListener(new jf_ActionListener());
setComponent(snumber,1,3,3,150,true);
setComponent(new JLabel("住宿费:"),0,4,1,1,false);
money=new JTextField();
money.addActionListener(new jf_ActionListener());
setComponent(money,1,4,3,1,true);
setComponent(new JLabel("舍长:"),0,5,1,1,false);
student=new JTextField();
student.addActionListener(new jf_ActionListener());
setComponent(student,1,5,3,1,true);
setComponent(new JLabel("备注"),0,6,1,1,false);
note=new JTextField();
note.addActionListener(new jf_ActionListener());
setComponent(note,1,6,3,150,true);
btn_query=new JButton("查询");
btn_query.addActionListener(new btn_queryActionListener());
setComponent(btn_query,0,7,1,1,false);
btn_Modify=new JButton("修改");
btn_Modify.addActionListener(new btn_ModifyActionListener());
setComponent(btn_Modify,1,7,1,1,false);
btn_Delete=new JButton("删除");
btn_Delete.addActionListener(new btn_DeleteActionListener());
setComponent(btn_Delete,2,7,1,1,false);
}
private class btn_queryActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
jdbcDormitory jd=new jdbcDormitory();
HashMap<Integer,ArrayList<Dormitory> > number=new HashMap<Integer,ArrayList<Dormitory>>();
ArrayList<Dormitory> floordormitory;
int temp;//统计楼数
try {
jd.dormitoryQuery("");
dormitory=jd.getDormitory();
for(Dormitory d:dormitory){
temp=Integer.parseInt(d.getDormitoryId().substring(2,3));
if(!number.containsKey(temp)){
floordormitory=new ArrayList<Dormitory>();
floordormitory.add(d);
number.put(temp, floordormitory);
}else{
number.get(temp).add(d);
}
}
Object[] floors;
floors=number.keySet().toArray();
for(int i=0;i<floors.length;i )
{
floordormitory=number.get(floors[i]);
tmpNode=new DefaultMutableTreeNode(floors[i] "楼");
insert.insertNodeInto(tmpNode, root, 0);
insert.reload();
for(int j=0;j<floordormitory.size();j ){
tmpNode.add(new DefaultMutableTreeNode(floordormitory.get(j).getDormitoryId()));
}
floordormitory=null;
}
} catch (SQLException e1) {
e1.printStackTrace();
}finally{
jdbcDrive.jdbcConnectionClose();
}
}
}
private class treeSelectActionListener implements TreeSelectionListener{
@Override
public void valueChanged(TreeSelectionEvent e) {
if(e.getPath().getLastPathComponent().toString().length()==5){
Dormitory d=null;
String message=e.getPath().getLastPathComponent().toString();
for(Dormitory dor: dormitory){
if(dor.getDormitoryId().equals(message)){
d=dor;
}
}
id.setText(d.getDormitoryId());
sex.setText(d.getDormitorySex());
ynumber.setText(d.getDormitoryPeople());
snumber.setText(d.getDormitoryPeopleNow());
student.setText(d.getStudentId());
money.setText(d.getMoney());
note.setText(d.getDormitoryNote());
}
}
}
private class btn_ModifyActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
jdbcDormitory jd=new jdbcDormitory();
try{
jd.dormitoryModify(id.getText().trim()
, attribute,changeAttribute);
JOptionPane.showMessageDialog(dormitoryUpdateUi.this,"修改成功" );
id.setText("");
sex.setText("");
ynumber.setText("");
snumber.setText("");
student.setText("");
money.setText("");
note.setText("");
}catch(Exception e1){
e1.printStackTrace();
System.out.println("修改失败");
JOptionPane.showMessageDialog(dormitoryUpdateUi.this,"修改失败" );
}finally{
jdbcDrive.jdbcConnectionClose();
}
}
}
private class jf_ActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
HashMap<JTextField,String> change=new HashMap<JTextField,String>();
change.put(id, "Dnumber");
change.put(sex, "Dsex");
change.put(ynumber, "Dynumber ");
change.put(snumber, "Dsnumber ");
change.put(student, "Dstudent ");
change.put(money, "Dmoney ");
change.put(note, "Dnote");
attribute=change.get((JTextField)e.getSource());
changeAttribute=((JTextField)e.getSource()).getText().trim();
}
}
private class btn_DeleteActionListener implements ActionListener{
@Override
public void actionPerformed(ActionEvent e) {
Dormitory d=new Dormitory
.DormitoryBuilder()
.addDormitoryId(id.getText().trim())
.CreateDormitory();
jdbcDormitory js=new jdbcDormitory();
try {
js.dormitoryQuery("where Dnumber =" "'" "" d.getDormitoryId() "'");
if(Integer.parseInt(js.getDormitory().get(0).getDormitoryPeopleNow())!=0){
JOptionPane.showMessageDialog(dormitoryUpdateUi.this, "宿舍有成员居住，无法删除");
}else{
js.dormitoryDelete(d);
id.setText("");
sex.setText("");
ynumber.setText("");
snumber.setText("");
money.setText("");
note.setText("");
student.setText("");
JOptionPane.showMessageDialog(dormitoryUpdateUi.this, "删除成功");
}
} catch (SQLException e1) {
e1.printStackTrace();
JOptionPane.showMessageDialog(dormitoryUpdateUi.this, "删除失败");
}
}
}
private void setComponent(JComponent component, int gridx, int gridy,
int gridwidth, int ipadx, boolean fill) {
final GridBagConstraints gridBagConstrains = new GridBagConstraints();
gridBagConstrains.gridx = gridx;
gridBagConstrains.gridy = gridy;
gridBagConstrains.insets = new Insets(20, 20, 3, 1);
if (gridwidth > 1)
gridBagConstrains.gridwidth = gridwidth;
if (ipadx > 0)
gridBagConstrains.ipadx = ipadx;
if (fill)
gridBagConstrains.fill = GridBagConstraints.HORIZONTAL;
panel.add(component, gridBagConstrains);
}
public static void main(String [] args){
dormitoryUpdateUi d=new dormitoryUpdateUi();
}
}下面是完整的源代码地址：
链接：https://pan.baidu.com/s/1zM-sDtoxR07bKydHBh996A 提取码：anwn
发布者：全栈程序员栈长，转载请注明出处：https://javaforall.cn/144266.html原文链接：https://javaforall.cn
