import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.sql.*;
import java.util.*;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.table.*;
class AccessK{
public static Connection conn=null;
public static Statement stmt=null;
public static ResultSet rs=null;
public static Connection connect() {
try {
Class.forName("com.hxtt.sql.access.AccessDriver");
String url="jdbc:Access:///d:/stu.accdb";
Connection conn=DriverManager.getConnection(url, "", "");
return conn;
}catch(ClassNotFoundException e) {
e.printStackTrace();
}catch(SQLException e) {
e.printStackTrace();
}catch(Exception e1) {
e1.printStackTrace();
}
return null;
}
public static void update(String sql) {
try {
conn=connect();
stmt=conn.createStatement();
stmt.executeUpdate(sql);
}catch(SQLException e) {
e.printStackTrace();
}catch(Exception e1) {
e1.printStackTrace();
}
}
public static ResultSet query(String sql) {
try {
conn=connect();
stmt=conn.createStatement();
rs=stmt.executeQuery(sql);
}catch(SQLException e){
e.printStackTrace();
}
return rs;
}
public static void close() {
try {
if(rs!=null)
rs.close();
if(stmt!=null)
stmt.close();
if(conn!=null)
conn.close();
}catch(SQLException e) {
e.printStackTrace();
}
}
}
class GUI implements ActionListener,ListSelectionListener{
JFrame frame;
JTable t;
DefaultTableModel tm;
JScrollPane sp;
JPanel p1,p2,p3;
JLabel l1,l2,l3,l4;
JTextField t1,t2,t4;
JRadioButton r1,r2;
JButton b1,b2,b3,b4,b5,b6,b7;
GUI(){
frame=new JFrame("Tests");
p1=new JPanel();p2=new JPanel();p3=new JPanel();
tm=new DefaultTableModel();
t=new JTable(tm);
t.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
sp=new JScrollPane(t);
sp.setPreferredSize(new Dimension(600,200));
l1=new JLabel("学号：");l2=new JLabel("姓名：");
l3=new JLabel("性别：");l4=new JLabel("爱好：");
t1=new JTextField(10);t2=new JTextField(10);
t4=new JTextField(10);
r1=new JRadioButton("男",true);
r2=new JRadioButton("女");
ButtonGroup r=new ButtonGroup();
r.add(r1);r.add(r2);
b1=new JButton("增加");b2=new JButton("删除");
b3=new JButton("修改");b4=new JButton("查找");
b5=new JButton("显示全部");b6=new JButton("写入txt");
b7=new JButton("清空文本框");
frame.getContentPane().setLayout(new BorderLayout(2,2));
frame.add(sp,BorderLayout.CENTER);
p1.setLayout(new FlowLayout());
p1.setSize(600, 20);
p1.add(l1);p1.add(t1);p1.add(l2);p1.add(t2);
p1.add(l3);p1.add(r1);p1.add(r2);p1.add(l4);p1.add(t4);
p2.setLayout(new GridLayout(1,7));
p2.add(b1);p2.add(b2);p2.add(b3);p2.add(b4);p2.add(b5);p2.add(b6);p2.add(b7);
p3.setLayout(new GridLayout(2,1));
p3.add(p1);p3.add(p2);
frame.add(p3,BorderLayout.SOUTH);
frame.setSize(600,300);
frame.setVisible(true);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
showall();
b1.addActionListener(this);
b2.addActionListener(this);
b3.addActionListener(this);
b4.addActionListener(this);
b5.addActionListener(this);
b6.addActionListener(this);
b7.addActionListener(this);
t.getSelectionModel().addListSelectionListener(this);
}
public void actionPerformed(ActionEvent e) {
if(e.getSource()==b1) insert();
else if(e.getSource()==b2) delete();
else if(e.getSource()==b3) update();
else if(e.getSource()==b4) search();
else if(e.getSource()==b5) showall();
else if(e.getSource()==b6) write();
else if(e.getSource()==b7) clear();
}
public void valueChanged(ListSelectionEvent e) {
clear();
int row = t.getSelectedRow();
if(row>=0) {
String id = (String) t.getValueAt(row, 0);
String name = (String) t.getValueAt(row, 1);
String sex = (String) t.getValueAt(row, 2);
String aihao = (String) t.getValueAt(row, 3);
t1.setText(id);t2.setText(name);
if(sex.equals("男")) r1.setSelected(true);
else r2.setSelected(true);
t4.setText(aihao);
}
}
public void insert() {
String id = t1.getText();
String name = t2.getText();
String sex = "";
if(r1.isSelected())
sex="男";
else
sex="女";
String aihao =t4.getText();
if(id.length()<1) {
JOptionPane.showMessageDialog(null,"请输入学号");
}else {
String sql ="select * from stu where 学号='"+id+"'";
try {
ResultSet rs = AccessK.query(sql);
if(rs.next()) {
JOptionPane.showMessageDialog(null,"学号已存在");
AccessK.close();
}else {
AccessK.close();
sql="insert into stu(学号,姓名,性别,爱好)values('"+id+"','"+name+"','"+sex+"','"+aihao+"')";
AccessK.update(sql);
AccessK.close();
Vector<String> r=new Vector<String>();
r.add(id);r.add(name);r.add(sex);r.add(aihao);
tm.addRow(r);
clear();
JOptionPane.showMessageDialog(null, "增加成功!");
}
}catch(SQLException e) {
e.printStackTrace();
}catch(Exception e) {
e.printStackTrace();
}
}
}
public void delete() {
int row = t.getSelectedRow();
if(row==-1) {
JOptionPane.showMessageDialog(null, "请选择要删除的行");
}else {
int res = JOptionPane.showConfirmDialog(null,"确定删除?","delete",JOptionPane.YES_OPTION,JOptionPane.QUESTION_MESSAGE);
if(res==JOptionPane.YES_OPTION) {
String id = (String)t.getValueAt(row, 0);
String sql = "delete from stu where 学号='"+id+"'";
AccessK.update(sql);
AccessK.close();
tm.removeRow(row);
JOptionPane.showMessageDialog(null, "删除成功!");
}
}
clear();
}
public void update() {
int row = t.getSelectedRow();
if(row==-1) {
JOptionPane.showMessageDialog(null,"请选择要修改的行");
}
else {
String id = (String) t.getValueAt(row, 0);
String name = t2.getText();
String sex ="";
if(r1.isSelected())
sex="男";
else
sex="女";
String aihao = t4.getText();
String sql="update stu set 姓名='"+name+"',性别='"+sex+"',爱好='"+aihao+"'where 学号='"+id+"'";
AccessK.update(sql);
tm.setValueAt(id, row, 0);
tm.setValueAt(name, row, 1);
tm.setValueAt(sex, row, 2);
tm.setValueAt(aihao, row, 3);
AccessK.close();
clear();
JOptionPane.showMessageDialog(null, "修改成功");
}
}
public void search() {
String id = t1.getText();
String name = t2.getText();
String sex = "";
if (r1.isSelected())
sex = "男";
else
sex = "女";
String aihao = t4.getText();
String sql = "";
if (aihao.equals("")) {
sql = "select * from stu where 学号 like '%" + id + "%' and 姓名 like '%" + name + "%' and 性别 like '%" + sex
+ "%'";
} else {
sql = "select * from stu where 学号 like '%" + id + "%' and 姓名 like '%" + name + "%' and 性别 like '%" + sex
+ "%' and 爱好 like '%" + aihao + "%'";
}
try {
Vector<String> vector = new Vector<String>();
vector.add("学号");
vector.add("姓名");
vector.add("性别");
vector.add("爱好");
Vector<Vector<String>> data = new Vector<Vector<String>>();
ResultSet rs = AccessK.query(sql);
while (rs.next()) {
String r_id = rs.getString("学号");
String r_name = rs.getString("姓名");
String r_sex = rs.getString("性别");
String r_aihao = rs.getString("爱好");
Vector<String> row = new Vector<String>();
row.add(r_id);
row.add(r_name);
row.add(r_sex);
row.add(r_aihao);
data.add(row);
}
AccessK.close();
tm.setDataVector(data, vector);
clear();
JOptionPane.showMessageDialog(null,"查找成功!");
} catch (SQLException e1) {
e1.printStackTrace();
} catch (Exception e) {
e.printStackTrace();
}
}
public void showall() {
String sql="select * from stu";
Vector<String> v =new Vector<String>();
v.add("学号");v.add("姓名");v.add("性别");v.add("爱好");
Vector<Vector<String>> data = new Vector<Vector<String>>();
try {
ResultSet rs = AccessK.query(sql);
while(rs.next()) {
String id = rs.getString("学号");
String name = rs.getString("姓名");
String sex = rs.getString("性别");
String aihao = rs.getString("爱好");
Vector<String> r = new Vector<String>();
r.add(id);r.add(name);r.add(sex);r.add(aihao);
data.add(r);
}
AccessK.close();
tm.setDataVector(data, v);
}catch(SQLException e) {
e.printStackTrace();
}catch(Exception e) {
e.printStackTrace();
}
clear();
}
public void write() {
try {
JFileChooser fileChooser=new JFileChooser("D:/");
if(fileChooser.showOpenDialog(frame)==JFileChooser.APPROVE_OPTION) {
File file=fileChooser.getSelectedFile();
FileWriter f=new FileWriter(file);
String str ="学号 姓名 性别 爱好\r\n";
f.write(str);
int row=t.getRowCount();
for(int i=0;i<row;i++) {
String id=(String)t.getValueAt(i, 0);
String name=(String)t.getValueAt(i, 1);
String sex= (String)t.getValueAt(i, 2);
String aihao = (String)t.getValueAt(i, 3);
str=id+" "+name+" "+sex+" "+aihao+"\r\n";
f.write(str);
}
f.close();
clear();
JOptionPane.showMessageDialog(null,"写入成功!");
}
}catch(IOException ioe) {
ioe.printStackTrace();
}
}
public void clear() {
t1.setText("");
t2.setText("");
r1.setSelected(true);
t4.setText("");
}
}
public class Tests {
public static void main(String[] args) {
new GUI();
}
}
