connect.java

chat的连接 很好的 大家都看看 我也是下在来的

import java.awt.*;
import javax.swing.*;
import java.net.*;
import java.io.*;
import java.awt.event.*;

class  Connect extends JFrame implements ActionListener,ItemListener{
			/**
	 * 
	 */
	private static final long serialVersionUID = 1L;

	private Socket client;//套接字
	private String hostName = "localhost";
	private int port = 6000;

	private JLabel nameLabel;
	private JTextField nameText;
	private JRadioButton boyRadio,girlRadio,secretRadio;
	private String sex ="";

	private JLabel hostLabel;
	private JLabel portLabel;
	private JTextField hostText;
	private JTextField portText;

	private JButton cancell;
	private JButton ok;

	private Container c;

	private BufferedReader in;
	private PrintWriter out;

	public Connect(){
		super("聊天登陆");

		c = this.getContentPane();
		c.setLayout(new BorderLayout());
		final Color defaultBackground = this.getBackground();

		hostLabel = new JLabel("地址：");
		portLabel = new JLabel("端口：");
		hostText = new JTextField(10);
		hostText.setText(hostName);			//设置默认值
		portText = new JTextField(4);
		portText.setText(Integer.toString(port));

		cancell = new JButton("放弃");
		ok = new JButton("连接");

		nameLabel = new JLabel("姓名：");
		nameText = new JTextField(10);
		boyRadio = new JRadioButton("男生");
		girlRadio = new JRadioButton("女生");
		secretRadio = new JRadioButton("保密");

		ButtonGroup sexGroup = new  ButtonGroup();
		sexGroup.add(boyRadio);
		sexGroup.add(girlRadio);
		sexGroup.add(secretRadio);

		//*********用户信息面板*********************//
		JPanel userInfoPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
		userInfoPanel.add(nameLabel);
		userInfoPanel.add(nameText);

		userInfoPanel.add(boyRadio);
		userInfoPanel.add(girlRadio);
		userInfoPanel.add(secretRadio);
		//***************************************//

		//****************连接服务器面板******************//
		JPanel centerPanel = new JPanel(new FlowLayout(FlowLayout.LEFT));
		centerPanel.add(hostLabel);
		centerPanel.add(hostText);
		centerPanel.add(portLabel);
		centerPanel.add(portText);
		//***************************************************//

		//*******************组合以上两个面板*****************//
		JPanel upperPanel = new JPanel(new GridLayout(2,1)); //面板
		upperPanel.setBorder(BorderFactory.createLineBorder(new Color(125,161,253),2));
		upperPanel.setBackground(new Color(70,61,129));
		upperPanel.add(userInfoPanel);
		upperPanel.add(centerPanel);
	  //***************************************************//

		//****************连接确认连接的面板******************//
		JPanel lowerPanel = new JPanel();
		JLabel spaceLabel = new JLabel("");
		spaceLabel.setPreferredSize(new Dimension(20,20));
		lowerPanel.add(cancell);
		lowerPanel.add(spaceLabel);
		lowerPanel.add(ok);
		//***************************************************//
		
		//***************组合整个框架**********************//
		c.add(upperPanel,BorderLayout.CENTER);
		c.add(lowerPanel,BorderLayout.SOUTH);
		//**************************************************//

		//事件监听 单选
		boyRadio.addItemListener(this);
		girlRadio.addItemListener(this);
		secretRadio.addItemListener(this);

		//事件监听 按钮
		cancell.addActionListener(this);
		ok.addActionListener(this);

		this.setPreferredSize(new Dimension(350,150));
		this.setMaximumSize(new Dimension(350,150));

		this.pack();
		this.setResizable(false);  //设置不能最大化
		this.setVisible(true);
	} 

	//事件 单选
	 public void itemStateChanged(ItemEvent e){

		 if (e.getSource() == boyRadio){
			sex = "Boy";
		 }
		 if (e.getSource() == girlRadio){
			sex = "Girl";
		 }
		 if (e.getSource() == secretRadio){
			sex = "Secret";
		 }

	 }

	//事件 按钮
	public void actionPerformed(ActionEvent e){
		if(e.getSource() == cancell){
			this.shutDown();
		}
		else if (e.getSource() == ok){
			if ((nameText.getText()).trim().length() == 0){
				JOptionPane.showMessageDialog(this,"请输入一个名字","提示",JOptionPane.INFORMATION_MESSAGE);
				return;
			}
			else if (sex.length() == 0){
				JOptionPane.showMessageDialog(this,"请选择性别","提示",JOptionPane.INFORMATION_MESSAGE);
				return;
			}
			else{
				try{
					this.link();
					ChatFrame app = new ChatFrame();
					 app.init(in,out,nameText.getText());
					ok.setEnabled(false); //确保不会被再次点击
					this.setVisible(false);
				}catch (Exception ee){
					JOptionPane.showMessageDialog(this,"登陆失败","失败",JOptionPane.ERROR_MESSAGE);
					return;
				}
			}
		}
	}

	public void link() throws Exception{			//连接服务器

		hostName = hostText.getText().trim();
		port = Integer.parseInt(portText.getText());
		client = new Socket(hostName,port);

		in = new BufferedReader(new InputStreamReader(client.getInputStream()));
		out = new PrintWriter(client.getOutputStream());
		out.println(nameText.getText()+"&"+sex);
		out.flush();

		/**
		catch(NumberFormatException nfe){
			System.out.println(nfe);
		//	return false;
		}
		catch(Exception e){
			System.out.println(e);
		//	return false;
		}
		//return true;
		*/
	}

  public void shutDown() {  
	  System.exit(0); 
	}

	public static void main(String[] args) {
		Connect app = new Connect();

		app.addWindowListener(
			new WindowAdapter(){
				public void windowClosing(WindowEvent e){
					System.exit(0);
				}
			}
		);
	}
}