學生學籍管理系統~~功能介面
之前介紹了登入介面的設計，現在介紹一下注冊管理員和錄入資訊的部分。
設計註冊管理員的思想是：預設一個擁有建立使用者的管理員，這個管理員可以建立資料庫登入使用者（相當於建立教師），而這些使用者只能登入和進行其他操作沒有建立使用者的功能（類似於教師不能建立教師）， 建立使用者成功後，會將賬號密碼和暱稱儲存到My_Adminstrator表中。
登入介面的作用是驗證是否能登入資料庫，登入成功後將賬號、密碼通過引數的形式通過其他類的建構函式傳遞過去，再在其他類中重新連線資料庫。程式碼中我去掉了import。
public class Register extends JFrame implements ActionListener{
Font font = new Font("楷體_GB2312",Font.BOLD+Font.ITALIC,20);
Font font1 = new Font("楷體_GB2312",Font.BOLD+Font.ITALIC,15);
JTextField register_account;
JTextField register_name;
JTextField register_password;
String account;
String password;
String connectDB = "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=Databaseproject";
String JDriver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
Connection conR;
Statement stmtR;
JButton JB_sure = new JButton("確定");
JButton JB_reset = new JButton("重置");
String path = "C:/Users/yangcheng/workspace/DatabaseExperiment/src"
+ "/Graphical_User_Interface/choice.png";
String path1 = "C:/Users/yangcheng/workspace/DatabaseExperiment/src"
+ "/Graphical_User_Interface/成功.png";
JPanel jpl = new JPanel();
JPanel jpl1 = new JPanel();
JPanel jpl2 = new JPanel();
JPanel jpl3 = new JPanel();
public Register(String ac,String pw){
account = ac;
password = pw;
try {
Class.forName(JDriver);
conR = DriverManager.getConnection(connectDB, account, password);
stmtR = conR.createStatement();
} catch (ClassNotFoundException | SQLException e) {
dispose();
}
this.setTitle("管理員註冊");
this.setSize(280,230);
this.setLayout(new GridLayout(4,2,15,20));
this.setLocationRelativeTo(null);
ImageIcon bg = new ImageIcon(path); //背景圖片
JLabel label = new JLabel(bg);
label.setBounds(0,0,bg.getIconWidth(),bg.getIconHeight());
this.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE));
JPanel imgP = (JPanel)this.getContentPane();
imgP.setOpaque(false);
JLabel lba = new JLabel("賬號："); //賬號
register_account = new JTextField(10);
lba.setFont(font);
register_account.setFont(font1);
jpl.add(lba);
jpl.add(register_account);
jpl.setOpaque(false);
this.add(jpl);
JLabel lbn = new JLabel("姓名："); //使用者名稱
register_name = new JTextField(10);
lbn.setFont(font);
register_name.setFont(font1);
jpl1.add(lbn);
jpl1.add(register_name);
jpl1.setOpaque(false);
this.add(jpl1);
JLabel lbp = new JLabel("密碼："); //密碼
register_password = new JTextField(10);
lbp.setFont(font);
register_password.setFont(font1);
jpl2.add(lbp);
jpl2.add(register_password);
jpl2.setOpaque(false);
this.add(jpl2);
JB_sure.setActionCommand("sure");
JB_sure.addActionListener(this);
jpl3.add(JB_sure);
JB_reset.setActionCommand("reset");
JB_reset.addActionListener(this);
jpl3.add(JB_reset);
jpl3.setOpaque(false);
this.add(jpl3);
this.setVisible(true);
this.setResizable(false);
}
public void actionPerformed(ActionEvent e){
if(e.getActionCommand().equals("sure")){
String user = register_account.getText();
String name = register_name.getText();
String pwd = register_password.getText();
if(!user.equals("") && !name.equals("") && !pwd.equals("")){
try{
ResultSet rs = stmtR.executeQuery("select * from My_Adminstrator");
while (rs.next()) {
if(rs.getString("Account").equals(user)){
JOptionPane.showMessageDialog(null,"該使用者已經存在");
stmtR.close();
conR.close();
dispose();
break;
}
}
String str = "create login "+user+" with password = '"+pwd //建立登入使用者，並指定資料庫
+"', default_database=Databaseproject";
String str1 = "create user "+user+" for login "+ user+" with default_schema=Databaseproject";//建立使用者
String str2 = "exec sp_addrolemember 'db_owner', '"+user+"'";//賦予許可權
String sql = "insert into My_Adminstrator values('"+user+"','"+name+"','"+pwd+"')";//新增到表中
stmtR.executeUpdate(str);
stmtR.executeUpdate(str1);
stmtR.executeUpdate(str2);
stmtR.executeUpdate(sql);
JOptionPane.showMessageDialog(null,"註冊成功");
stmtR.close();
conR.close();
dispose();
}catch(Exception ex){
JOptionPane.showMessageDialog(null,"使用者許可權不夠");
try {
stmtR.close();
conR.close();
} catch (SQLException e1) {
e1.printStackTrace();
}
dispose();
}
}else{
JOptionPane.showMessageDialog(null,"資訊不能為空");
}
}
if(e.getActionCommand().equals("reset")){
register_account.setText(null);
register_name.setText(null);
register_password.setText(null);
}
}
}註冊介面： 
程式碼的邏輯很簡單，通過文字框的形式獲取賬號、姓名、密碼，判斷是否為空，資料庫表中是否存在該使用者，如果不存在且是超級管理員則成功，反之則失敗。
由於錄入資訊的程式碼比較繁瑣比較多，我就挑一個最少的介紹吧，學籍介面，程式碼中我去掉了import。
public class School_Manage extends JFrame implements ActionListener{
String account;
String password;
String connectDB = "jdbc:sqlserver://127.0.0.1:1433;DatabaseName=Databaseproject";
String JDriver = "com.microsoft.sqlserver.jdbc.SQLServerDriver";
Connection conR;
Statement statement;
Font font0 = new Font("楷體_GB2312",Font.BOLD+Font.ITALIC,40);
Font fontjb = new Font("楷體_GB2312",Font.BOLD,15);
Font fontarea = new Font("楷體_GB2312",Font.BOLD,25);
Font fontjt = new Font("楷體_GB2312",Font.BOLD,20);
String path = "C:/Users/yangcheng/workspace/DatabaseExperiment/src"
+ "/Graphical_User_Interface/背景.png";
Font font = new Font("楷體_GB2312",Font.BOLD+Font.ITALIC,20);
JPanel jpl = new JPanel(null); //將內容載入到上面，起到介面重新整理作用
JButton JB_add = new JButton("錄入");
JButton JB_change = new JButton("修改");
JButton JB_search = new JButton("查詢");
JButton JB_display = new JButton("輸出");
JButton JB_back = new JButton("返回");
JRadioButton jrbmilifalse;
JRadioButton jrbmilitrue;
JTextField jtid; //學號
JTextField jtawardtext; //獎學金
JTextField jtloantext; //貸款
JRadioButton jrbregtrue;
JRadioButton jrbregfalse;
JTextField jtunusualtext; //異動情況
JTextField jtmilitarytext; //軍訓情況
JTextField jtgraduationtext; //是否畢業
JRadioButton jrbgradfalse;
JRadioButton jrbgradtrue;
JScrollPane jsinfor;
JTextArea jtinfor;
int snum; String strnum;
String saward;
String sloan;
String sregister;
String sunusual;
String smilitary;
String sgraduation;
//判斷點選的是哪個gong
boolean flag_add = false;
boolean flag_change = false;
boolean flag_search = false;
boolean flag_display = false;
public School_Manage(String ac, String pw){
this.setTitle("學籍管理系統");
this.setSize(516 , 530);
this.setLayout(new FlowLayout(FlowLayout.CENTER,30,10));
this.setLocationRelativeTo(null);
account = ac;
password = pw;
try {
Class.forName(JDriver);
conR = DriverManager.getConnection(connectDB, account, password);
statement = conR.createStatement();
} catch (ClassNotFoundException | SQLException e) {
dispose();
}
ImageIcon bg = new ImageIcon(path); //背景圖片
JLabel label = new JLabel(bg);
label.setBounds(0,0,bg.getIconWidth(),bg.getIconHeight());
this.getLayeredPane().add(label, new Integer(Integer.MIN_VALUE));
JPanel imgP = (JPanel)this.getContentPane();
imgP.setOpaque(false);
JLabel lb0 = new JLabel("學生學籍管理"); //標題
lb0.setFont(font0);
this.add(lb0);
JButton jbt = new JButton(); //換行
jbt.setPreferredSize(new Dimension(400,1));
jbt.setBorderPainted(false);
jbt.setContentAreaFilled(false);
this.add(jbt);
JB_add.setBorderPainted(false); //錄入
JB_add.setActionCommand("jbadd");
JB_add.addActionListener(this);
JB_add.setFont(fontjb);
this.add(JB_add);
JB_change.setBorderPainted(false); //修改
JB_change.setActionCommand("jbchange");
JB_change.addActionListener(this);
JB_change.setFont(fontjb);
this.add(JB_change);
JB_search.setBorderPainted(false); //查詢
JB_search.setActionCommand("jbsearch");
JB_search.addActionListener(this);
JB_search.setFont(fontjb);
this.add(JB_search);
JB_display.setBorderPainted(false); //輸出
JB_display.setActionCommand("jbdisplay");
JB_display.addActionListener(this);
JB_display.setFont(fontjb);
this.add(JB_display);
JB_back.setBorderPainted(false); //返回
JB_back.setActionCommand("jbback");
JB_back.addActionListener(this);
JB_back.setFont(fontjb);
this.add(JB_back);
JButton jbt1 = new JButton(); //換行
jbt1.setPreferredSize(new Dimension(400,0));
jbt1.setBorderPainted(false);
jbt1.setContentAreaFilled(false);
this.add(jbt1);
this.setVisible(true);
this.setResizable(false);
}
//***********************************************************************
public JPanel createAdd(){ //錄入介面
jpl.setLayout(new FlowLayout(FlowLayout.CENTER,30,5));
jpl.setPreferredSize(new Dimension(516, 530));
//學號****************************************
JLabel lbid = new JLabel("學號："); //學號
lbid.setFont(fontjt);
jtid = new JTextField(5);
jtid.setFont(fontjb);
jpl.add(lbid);
jpl.add(jtid);
//換行
JButton jbt6 = new JButton();
jbt6.setPreferredSize(new Dimension(400,0));
jbt6.setBorderPainted(false);
jbt6.setContentAreaFilled(false);
jpl.add(jbt6);
//獎學金***************************************
JLabel lbaward = new JLabel("獎學金：");
lbaward.setFont(fontjt);
jpl.add(lbaward);
ButtonGroup bgaward = new ButtonGroup();
JRadioButton jrbawardfalse = new JRadioButton("無",false);
jrbawardfalse.setFont(fontjt);
jrbawardfalse.setContentAreaFilled(false);
jrbawardfalse.setActionCommand("awardfalse");
jrbawardfalse.addActionListener(this);
jpl.add(jrbawardfalse);
JRadioButton jrbawardtrue = new JRadioButton("有",false);
jrbawardtrue.setFont(fontjt);
jrbawardtrue.setContentAreaFilled(false);
jrbawardtrue.setActionCommand("awardtrue");
jrbawardtrue.addActionListener(this);
jpl.add(jrbawardtrue);
jtawardtext = new JTextField(5);
jtawardtext.setFont(fontjb);
jpl.add(jtawardtext);
bgaward.add(jrbawardtrue);
bgaward.add(jrbawardfalse);
//換行
JButton jbt = new JButton();
jbt.setPreferredSize(new Dimension(400,0));
jbt.setBorderPainted(false);
jbt.setContentAreaFilled(false);
jpl.add(jbt);
//貸款***************************************
JLabel lbloan = new JLabel("貸款：");
lbloan.setFont(fontjt);
jpl.add(lbloan);
ButtonGroup bgloan = new ButtonGroup();
JRadioButton jrbloanfalse = new JRadioButton("無",false);
jrbloanfalse.setFont(fontjt);
jrbloanfalse.setContentAreaFilled(false);
jrbloanfalse.setActionCommand("loanfalse");
jrbloanfalse.addActionListener(this);
jpl.add(jrbloanfalse);
JRadioButton jrbloantrue = new JRadioButton("有",false);
jrbloantrue.setFont(fontjt);
jrbloantrue.setContentAreaFilled(false);
jrbloantrue.setActionCommand("loantrue");
jrbloantrue.addActionListener(this);
jpl.add(jrbloantrue);
jtloantext = new JTextField(5);
jtloantext.setFont(fontjb);
jpl.add(jtloantext);
bgloan.add(jrbloantrue);
bgloan.add(jrbloanfalse);
//換行
JButton jbt5 = new JButton();
jbt5.setPreferredSize(new Dimension(400,0));
jbt5.setBorderPainted(false);
jbt5.setContentAreaFilled(false);
jpl.add(jbt5);
//註冊情況***************************************
JLabel lbregister = new JLabel("註冊情況：");
lbregister.setFont(fontjt);
jpl.add(lbregister);
ButtonGroup bgregister = new ButtonGroup();
jrbregtrue = new JRadioButton("是",false);
jrbregtrue.setFont(fontjt);
jrbregtrue.setContentAreaFilled(false);
jrbregtrue.setActionCommand("registertrue");
jrbregtrue.addActionListener(this);
jpl.add(jrbregtrue);
jrbregfalse = new JRadioButton("否",false);
jrbregfalse.setFont(fontjt);
jrbregfalse.setContentAreaFilled(false);
jrbregfalse.setActionCommand("registerfalse");
jrbregfalse.addActionListener(this);
jpl.add(jrbregfalse);
bgregister.add(jrbregtrue);
bgregister.add(jrbregfalse);
//換行
JButton jbt1 = new JButton();
jbt1.setPreferredSize(new Dimension(400,0));
jbt1.setBorderPainted(false);
jbt1.setContentAreaFilled(false);
jpl.add(jbt1);
//異動情況***************************************
JLabel lbunusual = new JLabel("異動情況：");
lbunusual.setFont(fontjt);
jpl.add(lbunusual);
ButtonGroup bgunusual = new ButtonGroup();
JRadioButton jrbunfalse = new JRadioButton("無",false);
jrbunfalse.setFont(fontjt);
jrbunfalse.setContentAreaFilled(false);
jrbunfalse.setActionCommand("unusualfalse");
jrbunfalse.addActionListener(this);
jpl.add(jrbunfalse);
JRadioButton jrbuntrue = new JRadioButton("有",false);
jrbuntrue.setFont(fontjt);
jrbuntrue.setContentAreaFilled(false);
jrbuntrue.setActionCommand("unusualtrue");
jrbuntrue.addActionListener(this);
jpl.add(jrbuntrue);
jtunusualtext = new JTextField(5);
jtunusualtext.setFont(fontjb);
jpl.add(jtunusualtext);
bgunusual.add(jrbuntrue);
bgunusual.add(jrbunfalse);
//換行
JButton jbt2 = new JButton();
jbt2.setPreferredSize(new Dimension(400,0));
jbt2.setBorderPainted(false);
jbt2.setContentAreaFilled(false);
jpl.add(jbt2);
//軍訓情況***************************************
JLabel lbmilitary = new JLabel("軍訓情況：");
lbmilitary.setFont(fontjt);
jpl.add(lbmilitary);
ButtonGroup bgmilitary = new ButtonGroup();
jrbmilifalse = new JRadioButton("無",false);
jrbmilifalse.setFont(fontjt);
jrbmilifalse.setContentAreaFilled(false);
jrbmilifalse.setActionCommand("militaryfalse");
jrbmilifalse.addActionListener(this);
jpl.add(jrbmilifalse);
jrbmilitrue = new JRadioButton("有",false);
jrbmilitrue.setFont(fontjt);
jrbmilitrue.setContentAreaFilled(false);
jrbmilitrue.setActionCommand("militarytrue");
jrbmilitrue.addActionListener(this);
jpl.add(jrbmilitrue);
jtmilitarytext = new JTextField(5);
jtmilitarytext.setFont(fontjb);
jpl.add(jtmilitarytext);
bgmilitary.add(jrbmilifalse);
bgmilitary.add(jrbmilitrue);
//換行
JButton jbt3 = new JButton();
jbt3.setPreferredSize(new Dimension(400,0));
jbt3.setBorderPainted(false);
jbt3.setContentAreaFilled(false);
jpl.add(jbt3);
//畢業情況***************************************
JLabel lbgraduation = new JLabel("畢業情況：");
lbgraduation.setFont(fontjt);
jpl.add(lbgraduation);
ButtonGroup bggraduation = new ButtonGroup();
jrbgradfalse = new JRadioButton("否",false);
jrbgradfalse.setFont(fontjt);
jrbgradfalse.setContentAreaFilled(false);
jrbgradfalse.setActionCommand("graduationfalse");
jrbgradfalse.addActionListener(this);
jpl.add(jrbgradfalse);
jrbgradtrue = new JRadioButton("是",false);
jrbgradtrue.setFont(fontjt);
jrbgradtrue.setContentAreaFilled(false);
jrbgradtrue.setActionCommand("graduationtrue");
jrbgradtrue.addActionListener(this);
jpl.add(jrbgradtrue);
bggraduation.add(jrbgradfalse);
bggraduation.add(jrbgradtrue);
//換行
JButton jbt4 = new JButton();
jbt4.setPreferredSize(new Dimension(400,0));
jbt4.setBorderPainted(false);
jbt4.setContentAreaFilled(false);
jpl.add(jbt4);
if(flag_add || flag_change){
JButton JB_sure = new JButton("確定");
JB_sure.setBorderPainted(false); //確定
JB_sure.setActionCommand("jbSsure");
JB_sure.addActionListener(this);
JB_sure.setFont(fontjb);
jpl.add(JB_sure);
}
return jpl;
}
public JPanel createChange(){ //修改介面
jpl = createAdd();
jtid.setText(strnum);
jtawardtext.setText(saward);
jtloantext.setText(sloan);
if(sregister.equals("是")){
jrbregtrue.setSelected(true);
}else{
jrbregfalse.setSelected(true);
}
jtunusualtext.setText(sunusual);
jtmilitarytext.setText(smilitary);
if(sgraduation.equals("是")){
jrbgradtrue.setSelected(true);
}else{
jrbgradfalse.setSelected(true);
}
return jpl;
}
public JPanel createSearch(){ //查詢介面
jpl = createAdd();
jtid.setText(strnum);
jtawardtext.setText(saward);
jtloantext.setText(sloan);
if(sregister.equals("是")){
jrbregtrue.setSelected(true);
}else{
jrbregfalse.setSelected(true);
}
jtunusualtext.setText(sunusual);
jtmilitarytext.setText(smilitary);
if(sgraduation.equals("是")){
jrbgradtrue.setSelected(true);
}else{
jrbgradfalse.setSelected(true);
}
return jpl;
}
public JPanel createDisplay(){ //輸出介面
jpl.setLayout(new FlowLayout(FlowLayout.CENTER,30,5));
jpl.setPreferredSize(new Dimension(516, 530));
JLabel lbinfor = new JLabel("學生學籍表全部資訊：");
lbinfor.setFont(fontarea);
jpl.add(lbinfor);
JButton jbt = new JButton(); //換行
jbt.setPreferredSize(new Dimension(400,0));
jbt.setBorderPainted(false);
jbt.setContentAreaFilled(false);
jpl.add(jbt);
jtinfor = new JTextArea(15,40);
jtinfor.setFont(fontjb);
jtinfor.setText("學生學籍資訊如下：\n");
jtinfor.setCaretPosition(0);
jsinfor = new JScrollPane(jtinfor); //以滾動框的形式輸出的資訊
jpl.add(jsinfor);
return jpl;
}
//***********************************************************************
public void actionPerformed(ActionEvent e){
if(e.getActionCommand().equals("jbadd")){ //錄入操作
flag_add = true;
flag_change = false;
flag_search = false;
flag_display = false;
jpl.removeAll();
jpl.repaint();
jpl = createAdd();
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}
if(e.getActionCommand().equals("jbchange")){ //修改操作
flag_add = false;
flag_change = true;
flag_search = false;
flag_display = false;
strnum = JOptionPane.showInputDialog("輸入要更新的學號：");
boolean flag = false;
if(strnum.equals("")){
JOptionPane.showMessageDialog(null,"學號不能為空！！！");
}else{
snum = Integer.valueOf(strnum).intValue();
try {
ResultSet result_snum = statement.executeQuery("select snum from School_Manage");
while (result_snum.next()) {
int num = Integer.valueOf(result_snum.getString("snum")).intValue();
if(num == snum){
flag = true;
break;
}
}
if(flag){
ResultSet result_snum_infor = statement.executeQuery("select * "
+"from School_Manage where snum = '"+snum+"'");
while(result_snum_infor.next()){
saward = result_snum_infor.getString("saward");
sloan = result_snum_infor.getString("sloan");
sregister = result_snum_infor.getString("sregister");
sunusual = result_snum_infor.getString("sunusual");
smilitary = result_snum_infor.getString("smilitary");
sgraduation = result_snum_infor.getString("sgraduation");
}
jpl.removeAll();
jpl.repaint();
jpl = createChange();
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}else{
JOptionPane.showMessageDialog(null,"學生檔案資訊不存在，請建立");
jpl.removeAll();
jpl.repaint();
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}
} catch (SQLException e1) {
JOptionPane.showMessageDialog(null,"資料庫操作失敗！！！");
}
}
}
if(e.getActionCommand().equals("jbsearch")){ //查詢操作
flag_add = false;
flag_change = false;
flag_search = true;
flag_display = false;
boolean flag = false;
strnum = JOptionPane.showInputDialog("輸入要查詢的學號：");
if(strnum.equals("")){
JOptionPane.showMessageDialog(null,"學號不能為空！！！");
}else{
snum = Integer.valueOf(strnum).intValue();
try {
ResultSet result_snum = statement.executeQuery("select * from School_Manage");
while (result_snum.next()) {
int num = Integer.valueOf(result_snum.getString("snum")).intValue();
if(num == snum){
flag = true;
break;
}
}
if(flag){
ResultSet result_snum_infor = statement.executeQuery("select * "
+"from School_Manage where snum = '"+snum+"'");
while(result_snum_infor.next()){
saward = result_snum_infor.getString("saward");
sloan = result_snum_infor.getString("sloan");
sregister = result_snum_infor.getString("sregister");
sunusual = result_snum_infor.getString("sunusual");
smilitary = result_snum_infor.getString("smilitary");
sgraduation = result_snum_infor.getString("sgraduation");
}
jpl.removeAll();
jpl.repaint();
jpl = createSearch();
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}else{
JOptionPane.showMessageDialog(null,"學生學籍資訊不存在，請建立");
jpl.removeAll();
jpl.repaint();
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}
} catch (SQLException e1) {
JOptionPane.showMessageDialog(null,"資料庫操作失敗！！！");
}
}
}
if(e.getActionCommand().equals("jbdisplay")){ //輸出操作
flag_add = false;
flag_change = false;
flag_search = false;
flag_display = true;
boolean flag = false;
try {
ResultSet result_infor_exist = statement.executeQuery("select * from School_Manage order by snum");
while (result_infor_exist.next()) {
flag = true;
break;
}
if(flag){
jpl.removeAll();
jpl.repaint();
jpl = createDisplay();
ResultSet result_infor = statement.executeQuery("select * from School_Manage order by snum");
while(result_infor.next()){
strnum = result_infor.getString("snum");
saward = result_infor.getString("saward");
sloan = result_infor.getString("sloan");
sregister = result_infor.getString("sregister");
sunusual = result_infor.getString("sunusual");
smilitary = result_infor.getString("smilitary");
sgraduation = result_infor.getString("sgraduation");
jtinfor.append("學號："+strnum+"\n");
jtinfor.append("獎學金："+saward+"\n");
jtinfor.append("貸款："+sloan+"\n");
jtinfor.append("註冊情況："+sregister+"\n");
jtinfor.append("異動情況："+sunusual+"\n");
jtinfor.append("軍訓情況："+smilitary+"\n");
jtinfor.append("是否畢業："+sgraduation+'\n'+"*****"
+ "****************"+'\n');
}
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}else{
JOptionPane.showMessageDialog(null,"學生檔案表中沒有資訊！！！");
jpl.removeAll();
jpl.repaint();
jpl.setOpaque(false);
this.add(jpl);
this.validate();
}
} catch (SQLException e1) {
JOptionPane.showMessageDialog(null,"資料庫操作失敗！！！");
}
}
if(e.getActionCommand().equals("jbback")){ //返回操作
try {
statement.close();
conR.close();
dispose();
} catch (SQLException e1) {
}
dispose();
}
if(e.getActionCommand().equals("awardfalse")){ //獎學金
jtawardtext.setText("無");
}
if(e.getActionCommand().equals("awardtrue")){
jtawardtext.setText("具體內容：");
}
if(e.getActionCommand().equals("loanfalse")){ //貸款
jtloantext.setText("無");
}
if(e.getActionCommand().equals("loantrue")){
jtloantext.setText("具體內容：");
}
if(e.getActionCommand().equals("registerfalse")){ //註冊情況
sregister = "否";
}
if(e.getActionCommand().equals("registertrue")){
sregister = "是";
}
if(e.getActionCommand().equals("unusualfalse")){ //異動情況
jtunusualtext.setText("無");
}
if(e.getActionCommand().equals("unusualtrue")){
jtunusualtext.setText("具體情況：");
}
if(e.getActionCommand().equals("militaryfalse")){ //軍訓情況
jtmilitarytext.setText("無");
}
if(e.getActionCommand().equals("militarytrue")){
jtmilitarytext.setText("成績：");
}
if(e.getActionCommand().equals("graduationfalse")){ //是否畢業
sgraduation = "否";
}
if(e.getActionCommand().equals("graduationtrue")){
sgraduation = "是";
}
if(e.getActionCommand().equals("jbSsure")){ //確定操作
boolean exit_R = false;
boolean exit_S = true;
if(jtid.getText().equals("")){
JOptionPane.showMessageDialog(null,"學號不能為空！！！");
}else{
try{
snum = Integer.valueOf(jtid.getText()).intValue();
saward = jtawardtext.getText();
sloan = jtloantext.getText();
sunusual = jtunusualtext.getText();
smilitary = jtmilitarytext.getText();
String insert = "insert into School_Manage values('"+snum+"','"+saward+"','"+sloan+"','"
+sregister+"','"+sunusual+"','"+smilitary+"','"+sgraduation+"')";
if(flag_add){
ResultSet result_snum_R = statement.executeQuery("select snum from Record_Manage");
while (result_snum_R.next()){
int num_R = Integer.valueOf(result_snum_R.getString("snum")).intValue();
if(snum == num_R){
exit_R = true;
break;
}
}
if(exit_R){
ResultSet result_snum_S = statement.executeQuery("select snum from School_Manage");
while (result_snum_S.next()) {
int num_S = Integer.valueOf(result_snum_S.getString("snum")).intValue();
if(snum == num_S){
exit_S = false;
break;
}
}
if(exit_S){
statement.executeUpdate(insert);
JOptionPane.showMessageDialog(null,"錄入成功！！！");
}else{
JOptionPane.showMessageDialog(null,"學生學籍資訊存在，無法重新錄入！！！");
}
}else{
JOptionPane.showMessageDialog(null,"學生檔案中不存在該學生，無法錄入學籍資訊！！！");
}
}
if(flag_change){
String delete = "delete from School_Manage where snum = '"+snum+"'";
statement.executeUpdate(delete);
statement.executeUpdate(insert);
JOptionPane.showMessageDialog(null,"修改成功！！！");
}
} catch (SQLException e1) {
JOptionPane.showMessageDialog(null,"資料庫操作失敗！！！");
}
}
}
}
}部分效果截圖：
往資料庫裡存資料是一個計較繁瑣的過程，邏輯一定要理清楚，不然可能出現各種各樣的bug，基本過程是通過學號判斷是否存在該學生，錄入：判斷該學生的學籍資訊是否存在，如果存在則錄入失敗；修改：輸入學號，不存在則失敗，存在則顯示學生學籍資訊，可以對其資訊進行修改；查詢：通過學號查詢資訊；輸出：用滾動框輸出學籍表中所有資訊。
修改資訊這裡有個偷懶的方法，由於學籍表沒有外來鍵等約束，修改時先delete然後insert，這樣就節省了程式碼，但是如果該表有其他表的外來鍵等，這樣的操作反而會讓自己很煩惱，親身經歷，所以還是老老實實敲update程式碼吧！
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