goumai.java

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import java.awt.BorderLayout;
import java.awt.*;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JFrame;
import javax.swing.JLabel;
import java.awt.Rectangle;
import java.io.DataInputStream;
import java.io.IOException;
import java.io.PrintWriter;
import java.net.ServerSocket;
import java.net.Socket;

import javax.swing.JTextField;
import javax.swing.JButton;
import javax.swing.ImageIcon;
import java.awt.event.KeyEvent;
import java.awt.Toolkit;
//将商品加入购物车
public class goumai extends JFrame {

	private static final long serialVersionUID = 1L;

	private JPanel jContentPane = null;

	private JLabel jLabel1 = null;

	private JTextField jTextField1 = null;

	private JButton jButton = null;
	private String jing = new String("");  //  @jve:decl-index=0:
	private String jing1 = new String("");
	private String jing2 = new String("");
	private String jing3 = new String("");

	private JButton cancel = null;

	private JLabel jLabel = null;
	/**
	 * This is the default constructor
	 */
	public goumai() {
		super();
		initialize();
	}
	public goumai(String jing,String jing1,String jing2,String jing3) {
		super();
		this.jing = jing;
		this.jing1 = jing1;
		this.jing2 = jing2;
		this.jing3 = jing3;
		initialize();
	}

	/**
	 * This method initializes this
	 * 
	 * @return void
	 */
	private void initialize() {
		this.setSize(316, 196);
		this.setIconImage(Toolkit.getDefaultToolkit().getImage(getClass().getResource("/pic/add1.png")));
		this.setContentPane(getJContentPane());
		this.setTitle("购买商品");
		this.setResizable(false);
	}

	/**
	 * This method initializes jContentPane
	 * 
	 * @return javax.swing.JPanel
	 */
	private JPanel getJContentPane() {
		if (jContentPane == null) {
			jLabel = new JLabel();
			jLabel.setBounds(new Rectangle(0, 0, 309, 168));
			jLabel.setIcon(new ImageIcon(getClass().getResource("/pic/background3.jpg")));
			jLabel.setDisplayedMnemonic(KeyEvent.VK_UNDEFINED);
			jLabel1 = new JLabel();
			jLabel1.setBounds(new Rectangle(78, 46, 160, 24));
			jLabel1.setText("请输入您要购买的商品数量");
			jContentPane = new JPanel();
			jContentPane.setLayout(null);
			jContentPane.add(jLabel1, null);
			jContentPane.add(getJTextField1(), null);
			jContentPane.add(getJButton(), null);
			jContentPane.add(getCancel(), null);
			jContentPane.setBackground(Color.white);
			jContentPane.add(jLabel, null);
		}
		return jContentPane;
	}

	/**
	 * This method initializes jTextField1	
	 * 	
	 * @return javax.swing.JTextField	
	 */
	private JTextField getJTextField1() {
		if (jTextField1 == null) {
			jTextField1 = new JTextField();
			jTextField1.setBounds(new Rectangle(96, 79, 124, 25));
		}
		return jTextField1;
	}
	private void sign_out()
	{
		this.dispose();
	}

	/**
	 * This method initializes jButton	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getJButton() {
		if (jButton == null) {
			jButton = new JButton();
			jButton.setBounds(new Rectangle(78, 115, 65, 30));
			jButton.setBackground(Color.white);
			jButton.setIcon(new ImageIcon(getClass().getResource("/pic/ok1.gif")));
			jButton.setBorderPainted(false);
			jButton.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					int j = 0;
					if(jTextField1.getText().trim().length() == 0)
					{
						String a="对不起，数量不能为空";
						messagebox mb=new messagebox(a);
						mb.setVisible(true);
						j = 1;
					}
					else if(!integer.isInteger(jTextField1.getText().trim()))
					{
						String a="对不起，请填写有效的数量";
						messagebox mb=new messagebox(a);
						mb.setVisible(true);
						j = 1;
					}
					if(j == 0)
					{
						try
						{
							Socket socket;
							socket = new Socket("localhost",2000);
							PrintWriter toServer = new PrintWriter(socket.getOutputStream(),true);
							toServer.println(15);
							toServer.println(jing);//用户名
							toServer.println(jing1);//店主名
							toServer.println(jing2);//商品名
							toServer.println(jing3);//价格
							toServer.println(jTextField1.getText().trim());
							try
							{
								ServerSocket serverSocket = new ServerSocket(2017);
								Socket  fromServer = serverSocket.accept();
								DataInputStream isFromServer = new DataInputStream(fromServer.getInputStream());
								int i = isFromServer.readInt();
								if(i == 1)
								{
									String a="商品已加入购物车";
									messagebox1 mb=new messagebox1(a,6);
									mb.setVisible(true);
									sign_out();
								}
								else if(i==0)
								{//购买数量大于商品数量
									String a="对不起，库存不能满足您的要求";
									messagebox mb=new messagebox(a);
									mb.setVisible(true);
								}
								serverSocket.close();
								
							}
							catch(IOException ex)
							{
								System.err.println(ex);
							}
						}
						catch(IOException ex)
						{
							System.err.println(ex);
						}
						j = 0;
						
					}
				}
			});
		}
		return jButton;
	}
	/**
	 * This method initializes cancel	
	 * 	
	 * @return javax.swing.JButton	
	 */
	private JButton getCancel() {
		if (cancel == null) {
			cancel = new JButton();
			cancel.setBounds(new Rectangle(172, 115, 65, 30));
			cancel.setBackground(Color.white);
			cancel.setIcon(new ImageIcon(getClass().getResource("/pic/cancel.gif")));
			cancel.setBorderPainted(false);
			cancel.addActionListener(new java.awt.event.ActionListener() {
				public void actionPerformed(java.awt.event.ActionEvent e) {
					dispose();
				}
			});
		}
		return cancel;
	}

}