myconnent.java

一个在线聊天系统

import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;

import javax.swing.ButtonGroup;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JRadioButton;
import javax.swing.JTextField;

public class myconnent extends JFrame {

	/**
	 * Launch the application
	 * 
	 * @param args
	 */
	public static void main(String args[]) {
		try {
			myconnent frame = new myconnent();
			frame.setVisible(true);
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	/**
	 * Create the frame
	 */
	String sex = "";
	Socket client;
	private BufferedReader in;
	private PrintWriter out;
	final JTextField txtname = new JTextField();
	public myconnent() {
		super();
		setTitle("聊天登录");
		getContentPane().setLayout(null);
		setBounds(100, 100, 500, 249);
		setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		
		final JRadioButton man = new JRadioButton();
		man.addActionListener(new ActionListener() {
			public void actionPerformed(final ActionEvent e) {
				sex = "man";
			}
		});
		man.setText("男");
		man.setBounds(286, 39, 45, 27);
		getContentPane().add(man);

		final JRadioButton woman = new JRadioButton();
		woman.addActionListener(new ActionListener() {
			public void actionPerformed(final ActionEvent e) {
				sex = "woman";
			}
		});
		woman.setText("女");
		woman.setBounds(368, 39, 55, 25);
		getContentPane().add(woman);
		//
		ButtonGroup bg = new ButtonGroup();
		bg.add(man);
		bg.add(woman);

		final JLabel lbname = new JLabel();
		lbname.setText("姓名");
		lbname.setBounds(15, 40, 75, 25);
		getContentPane().add(lbname);

		
		txtname.setBounds(68, 40, 160, 20);
		getContentPane().add(txtname);

		final JButton btin = new JButton();
		btin.addActionListener(new ActionListener() {//按钮中判断文本框和radio
			public void actionPerformed(final ActionEvent e) {
				if (txtname.getText().trim().equals("")) {
					JOptionPane.showMessageDialog(null, "请输入用户名！", "提示",
							JOptionPane.ERROR_MESSAGE);
				} else if (sex.length() == 0) {
					JOptionPane.showMessageDialog(null, "请选择性别！", "提示",
							JOptionPane.ERROR_MESSAGE);
				} else {
					try {
						link();//连接服务器
					} catch (Exception e1) {
						// TODO Auto-generated catch block
						e1.printStackTrace();
					}
					myclient client=new myclient();
					client.init(in,out,txtname.getText());
					client.show(true);
					close();
				}
			}
		});
		btin.setText("进入");
		btin.setBounds(195, 115, 130, 30);
		getContentPane().add(btin);
	}
	public void close(){//隐藏当前窗口
		this.setVisible(false);
	}
	public void link() throws Exception{			//连接服务器

		
		client = new Socket("localhost",6000);

		in = new BufferedReader(new InputStreamReader(client.getInputStream()));
		out = new PrintWriter(client.getOutputStream());
		out.println(txtname.getText());
		out.flush();
	}
}