package jiemian;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.*;
public class BookPurchase extends JFrame implements ActionListener
{
JPanel panel1,panel2,panel3,panel4;
JLabel TipLabel=new JLabel("我们来看看仓库里有没有这本书呢");
JLabel BookNameLabel,PressNameLabel,
AuthorLabel,BookIdLabel,
PressDateLabel,PriceLabel,StationLabel;
JTextField BookNameTextField,PressNameTextField,
AuthorTextField,BookIdTextField,
PressDateTextField,PriceTextField,StationTextField;
Container c;
JButton ClearBtn,YesBtn,UpdateBtn/*,ExitBtn*/;
public BookPurchase()
{
super("图书采购");
c=getContentPane();
c.setLayout(null);
panel3=new JPanel();
panel3.add(TipLabel);
panel3.setBounds(0,0,300,30);
c.add(panel3,BorderLayout.NORTH);
BookIdLabel=new JLabel("编号",JLabel.CENTER);
BookNameLabel=new JLabel("书名",JLabel.CENTER);
AuthorLabel=new JLabel("作者",JLabel.CENTER);
PressNameLabel=new JLabel("出版社",JLabel.CENTER);
PressDateLabel=new JLabel("采购数量",JLabel.CENTER);
PriceLabel=new JLabel("采购价格",JLabel.CENTER);
StationLabel=new JLabel("采购金额",JLabel.CENTER);
BookNameTextField=new JTextField(20);
PressNameTextField=new JTextField(20);
AuthorTextField=new JTextField(20);
BookIdTextField=new JTextField(20);
PressDateTextField=new JTextField(20);
PriceTextField=new JTextField(20);
StationTextField=new JTextField(15);
panel1=new JPanel();
panel4=new JPanel();
panel1.setLayout(new GridLayout(7,1));
panel4.setLayout(new GridLayout(7,1));
panel1.add(BookIdLabel);
panel4.add(BookIdTextField);
panel1.add(BookNameLabel);
panel4.add(BookNameTextField);
panel1.add(PressNameLabel);
panel4.add(PressNameTextField);
panel1.add(AuthorLabel);
panel4.add(AuthorTextField);
panel1.add(PressNameLabel);
panel4.add(PressNameTextField);
panel1.add(PressDateLabel);
panel4.add(PressDateTextField);
panel1.add(PriceLabel);
panel4.add(PriceTextField);
panel1.add(StationLabel);
panel4.add(StationTextField);
panel1.setBounds(0,30,100,220);
panel4.setBounds(100,30,220,220);
panel2=new JPanel();
panel2.setBounds(10,260,300,30);
panel2.setLayout(new GridLayout(1,4));
ClearBtn=new JButton("清空");
YesBtn=new JButton("查询");
UpdateBtn=new JButton("采购");
//ExitBtn=new JButton("计算");
panel2.add(ClearBtn);
panel2.add(YesBtn);
panel2.add(UpdateBtn);
//panel2.add(ExitBtn);
ClearBtn.addActionListener(this);
YesBtn.addActionListener(this);
UpdateBtn.addActionListener(this);
//ExitBtn.addActionListener(this);
//UpdateBtn.setEnabled(false);
c.add(panel3);
c.add(panel1);
c.add(panel4);
c.add(panel2);
setVisible(true);
setBounds(100,50,330,320);
}
public void actionPerformed(ActionEvent e)
{
Connection con;
PreparedStatement sql;
ResultSet rs;
if(e.getSource()==ClearBtn)
{
BookNameTextField.setText("");
PressNameTextField.setText("");
AuthorTextField.setText("");
BookIdTextField.setText("");
PressDateTextField.setText("");
PriceTextField.setText("");
StationTextField.setText("");
}
else if(e.getSource()==YesBtn)
{
try { Class.forName("com.mysql.jdbc.Driver");
}
catch(ClassNotFoundException f){}
try {
String Id;
Id=BookIdTextField.getText();
con=DriverManager.getConnection("jdbc:mysql://127.0.0.1:3306/book","root","123456");
sql=con.prepareStatement("SELECT * FROM essential where Id=?");
sql.setString(1,Id);
rs=sql.executeQuery();
if(!rs.next()){
JOptionPane.showMessageDialog(this,"这本书我们仓库没有，老板","提示对话框",JOptionPane.WARNING_MESSAGE);
}
else{
JOptionPane.showMessageDialog(this,"老板这本书我们有了，买不买你说了算","提示对话框",JOptionPane.WARNING_MESSAGE);
}
}
catch(SQLException e2)
{ System.out.println(e2);
}
if(e.getSource()==UpdateBtn){
if(BookIdLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"编号不能为空！");
}
else if(BookNameLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"书名不能为空！");
}
else if(AuthorLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"作者不能为空！");
}
else if(PressNameLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"出版社不能为空！");
}
else if(PressDateLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"采购数量");
}
else if(PriceLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"采购价格不能为空！");
}
else if(StationLabel.getText().trim().equals(""))
{
JOptionPane.showMessageDialog(null,"采购金额不能为空！");
}
else {
int n=JOptionPane.showConfirmDialog(this,"确认要采购吗？老板","确认对话框",JOptionPane.YES_NO_OPTION );
if(n==JOptionPane.YES_OPTION){
}
else{
/*String SerialPrice,quantity;
Double tamount;
SerialPrice=PriceTextField.getText();
quantity=PressDateLabel.getText();
StationTextField.setText("str");
tamount=Double.parseDouble(SerialPrice)*Double.parseDouble(quantity);
String str = String.valueOf(tamount);*/
UpdateBtn.addMouseListener(new MouseListener(){
public void mouseClicked(MouseEvent e) {
int value1 = Integer.parseInt(PressDateLabel.getText().trim());
int value2 = Integer.parseInt(PriceLabel.getText().trim());
StationLabel.setText(String.valueOf(value1 + value2));
}
public void mouseEntered(MouseEvent e) {
// TODO Auto-generated method stub
}
public void mouseExited(MouseEvent e) {
// TODO Auto-generated method stub
}
public void mousePressed(MouseEvent e) {
// TODO Auto-generated method stub
}
public void mouseReleased(MouseEvent e) {
// TODO Auto-generated method stub
}
});
}
}
}
}
}
public static void main(String args[]){
new BookPurchase();
}
} |
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