drawclient.java

java网络编程

package draw;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextArea;

import java.io.*;
import java.net.Socket;

public class DrawClient {

	private JTextArea textArea_1;
	private JTextArea textArea;
	private JFrame frame;
	
	private String xstr="";
	private String ystr="";
	private int x;
	private int y;
	
	String host="localhost";
	int port=6010;

	public static void main(String args[]) {
		try {
			DrawClient window = new DrawClient();
			window.frame.setVisible(true);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}


	public DrawClient() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame
	 */
	private void initialize() {
		frame = new JFrame("Draw客户端");
		frame.getContentPane().setLayout(null);
		frame.setBounds(100, 100, 500, 375);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

		textArea = new JTextArea();
		textArea.setBounds(88, 89, 104, 21);
		frame.getContentPane().add(textArea);

		final JLabel label = new JLabel();
		label.setText("输入X坐标");
		label.setBounds(109, 57, 60, 21);
		frame.getContentPane().add(label);

		textArea_1 = new JTextArea();
		textArea_1.setBounds(88, 196, 104, 21);
		frame.getContentPane().add(textArea_1);

		final JLabel label_1 = new JLabel();
		label_1.setText("输入Y坐标");
		label_1.setBounds(109, 169, 60, 21);
		frame.getContentPane().add(label_1);

		final JButton button = new JButton();
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				xstr=textArea.getText();
				ystr=textArea_1.getText();
				
				if(xstr.equals("")||ystr.equals("")){
					textArea.setText("请输入XY坐标");
					textArea_1.setText("请输入XY坐标");
				}
				else{
					x=Integer.valueOf(xstr).intValue();
					y=Integer.valueOf(ystr).intValue();
					
					if(x<0||y<0||x>300||y>300){
						textArea.setText("请输入范围内的坐标");
						textArea_1.setText("请输入范围内的坐标");
					}
					else{
						try{
							Socket socket=new Socket(host,port);
							OutputStream os=socket.getOutputStream();
						    BufferedWriter out=new BufferedWriter(new OutputStreamWriter(os));
						    out.write(""+x+' '+y);
						    out.flush();
					        socket.close();
						}
						catch(Exception ee){
							ee.printStackTrace();
						}
					}
				}
			}
		});
		button.setText("提交");
		button.setBounds(291, 131, 81, 34);
		frame.getContentPane().add(button);
	}

}