websocket的helloworld

程序员文章站 2024-03-23 10:31:22

...

ChatClient.java
ChatServer.java
EmptyClient.java
WebSocket.jar
index.html


index.html
<!DOCTYPE html>
<html>
  <head>
    <title>WebSocket Chat Client</title>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">

    <script type="text/javascript" src="prototype.js"></script>

    <script type="text/javascript">
        document.observe("dom:loaded", function() {
            function log(text) {
                $("log").innerHTML = (new Date).getTime() + ": " + (!Object.isUndefined(text) && text !== null ? text : "null") +"<br>"+ $("log").innerHTML;

			}

            if (!window.WebSocket) {
                alert("FATAL: WebSocket not natively supported. This demo will not work!");
            }

            var ws;

            $("uriForm").observe("submit", function(e) {
                e.stop();
                ws = new WebSocket($F("uri"));
                ws.onopen = function() {
                    log("[WebSocket#onopen]");
                }
                ws.onmessage = function(e) {
                    log("<b style='color:red;'>[WebSocket#onmessage] 接收消息:" + e.data + "</b>");
                }
                ws.onclose = function() {
                    log("[WebSocket#onclose]");
                    $("uri", "connect").invoke("enable");
                    $("disconnect").disable();
                    ws = null;
                }
                $("uri", "connect").invoke("disable");
                $("disconnect").enable();
            });

            $("sendForm").observe("submit", function(e) {
                e.stop();
                if (ws) {
                    var textField = $("textField");
                    ws.send(textField.value);
                    //log("[WebSocket#send] 发送消息:" + textField.value );
                    textField.value = "";
                    textField.focus();
                }
            });

			$("clear").observe("click", function(e) {
				$("log").innerHTML ='';
			});

            $("disconnect").observe("click", function(e) {
                e.stop();
                if (ws) {
                    ws.close();
                    ws = null;
                }
            });
        });
    </script>
  </head>
  <body>
      <form id="uriForm"><input type="text" id="uri" value="ws://localhost:8887" style="width:200px;"> <input type="submit" id="connect" value="Connect"><input type="button" id="disconnect" value="Disconnect" disabled="disabled"></form><br>
      <form id="sendForm"><input type="text" id="textField" value="" style="width:200px;"> <input type="submit" value="Send"> <input type="button" id='clear' value="clear msg"></form><br>
      <form><div id="log" style="width:800px;heigth:450px" ></div></form><br>
  </body>
</html>

EmptyClient.java


import java.net.URI;

import org.java_websocket.WebSocketClient;
import org.java_websocket.drafts.Draft;
import org.java_websocket.handshake.ServerHandshake;

public class EmptyClient extends WebSocketClient {

	public EmptyClient( URI serverUri , Draft draft ) {
		super( serverUri, draft );
	}

	public EmptyClient( URI serverURI ) {
		super( serverURI );
	}

	@Override
	public void onOpen( ServerHandshake handshakedata ) {
	}

	@Override
	public void onMessage( String message ) {
	}

	@Override
	public void onClose( int code, String reason, boolean remote ) {
	}

	@Override
	public void onError( Exception ex ) {
	}

}

ChatServer.java


import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.InetSocketAddress;
import java.net.UnknownHostException;
import java.util.Set;

import org.java_websocket.WebSocket;
import org.java_websocket.WebSocketServer;
import org.java_websocket.handshake.ClientHandshake;

public class ChatServer extends WebSocketServer {

	public ChatServer( int port ) throws UnknownHostException {
		super( new InetSocketAddress( InetAddress.getByName( "localhost" ), port ) );
	}

	public ChatServer( InetSocketAddress address ) {
		super( address );
	}

	@Override
	public void onOpen( WebSocket conn, ClientHandshake handshake ) {
		try {
			this.sendToAll( "new" );
		} catch ( InterruptedException ex ) {
			ex.printStackTrace();
		}
		System.out.println( conn + " entered the room!" );
	}

	@Override
	public void onClose( WebSocket conn, int code, String reason, boolean remote ) {
		try {
			this.sendToAll( conn + " has left the room!" );
		} catch ( InterruptedException ex ) {
			ex.printStackTrace();
		}
		System.out.println( conn + " has left the room!" );
	}

	@Override
	public void onMessage( WebSocket conn, String message ) {
		try {
			this.sendToAll( message );
		} catch ( InterruptedException ex ) {
			ex.printStackTrace();
		}
		System.out.println( conn + ": " + message );
	}


	@Override
	public void onError( WebSocket conn, Exception ex ) {
		ex.printStackTrace();
	}

	public void sendToAll( String text ) throws InterruptedException {
		Set<WebSocket> con = connections();
		synchronized ( con ) {
			for( WebSocket c : con ) {
				c.send( text );
			}
		}
	}

	///////////////////////////////////////////////////////////////////////////////////////
	public static void main( String[] args ) throws InterruptedException , IOException {
		//连接部份
		WebSocket.DEBUG = true;
		int port = 8887;
		try {
			port = Integer.parseInt( args[ 0 ] );
		} catch ( Exception ex ) { }
		ChatServer s = new ChatServer( port );
		s.start();
		System.out.println( "ChatServer started on port: " + s.getPort() );

		//服务端 发送消息处理部份
		BufferedReader sysin = new BufferedReader( new InputStreamReader( System.in ) );
		while ( true ) {
			String in = sysin.readLine();
			s.sendToAll( in );
		}
	}

}


import java.awt.Container;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.WindowEvent;
import java.net.URI;
import java.net.URISyntaxException;

import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;

import org.java_websocket.WebSocket;
import org.java_websocket.WebSocketClient;
import org.java_websocket.drafts.Draft;
import org.java_websocket.drafts.Draft_10;
import org.java_websocket.drafts.Draft_17;
import org.java_websocket.drafts.Draft_75;
import org.java_websocket.drafts.Draft_76;
import org.java_websocket.handshake.ServerHandshake;

public class ChatClient extends JFrame implements ActionListener {
	private static final long serialVersionUID = -6056260699202978657L;

	private final JTextField uriField;
	private final JButton connect;
	private final JButton close;
	private final JTextArea ta;
	private final JTextField chatField;
	private final JComboBox draft;
	private WebSocketClient cc;

	public ChatClient( String defaultlocation ) {
		super( "WebSocket Chat Client" );
		Container c = getContentPane();
		GridLayout layout = new GridLayout();
		layout.setColumns( 1 );
		layout.setRows( 6 );
		c.setLayout( layout );

		Draft[] drafts = { new Draft_17(), new Draft_10(), new Draft_76(), new Draft_75() };
		draft = new JComboBox( drafts );
		c.add( draft );

		uriField = new JTextField();
		uriField.setText( defaultlocation );
		c.add( uriField );

		connect = new JButton( "Connect" );
		connect.addActionListener( this );
		c.add( connect );

		close = new JButton( "Close" );
		close.addActionListener( this );
		close.setEnabled( false );
		c.add( close );

		JScrollPane scroll = new JScrollPane();
		ta = new JTextArea();
		scroll.setViewportView( ta );
		c.add( scroll );

		chatField = new JTextField();
		chatField.setText( "" );
		chatField.addActionListener( this );
		c.add( chatField );

		java.awt.Dimension d = new java.awt.Dimension( 300, 400 );
		setPreferredSize( d );
		setSize( d );

		addWindowListener( new java.awt.event.WindowAdapter() {
			@Override
			public void windowClosing( WindowEvent e ) {
				if( cc != null ) {
					cc.close();
				}
				dispose();
			}
		} );

		setLocationRelativeTo( null );
		setVisible( true );
	}

	public void actionPerformed( ActionEvent e ) {

		if( e.getSource() == chatField ) {
			if( cc != null ) {
				try {
					cc.send( chatField.getText() );
					chatField.setText( "" );
					chatField.requestFocus();
				} catch ( InterruptedException ex ) {
					ex.printStackTrace();
				}
			}

		} else if( e.getSource() == connect ) {
			try {
				// cc = new ChatClient(new URI(uriField.getText()), area, ( Draft ) draft.getSelectedItem() );
				cc = new WebSocketClient( new URI( uriField.getText() ), (Draft) draft.getSelectedItem() ) {

					@Override
					public void onMessage( String message ) {
						ta.append( "got: " + message + "\n" );
						ta.setCaretPosition( ta.getDocument().getLength() );
					}

					@Override
					public void onOpen( ServerHandshake handshake ) {
						ta.append( "You are connected to ChatServer: " + getURI() + "\n" );
						ta.setCaretPosition( ta.getDocument().getLength() );
					}

					@Override
					public void onClose( int code, String reason, boolean remote ) {
						ta.append( "You have been disconnected from: " + getURI() + "; Code: " + code + " " + reason + "\n" );
						ta.setCaretPosition( ta.getDocument().getLength() );
						connect.setEnabled( true );
						uriField.setEditable( true );
						draft.setEditable( true );
						close.setEnabled( false );
					}

					@Override
					public void onError( Exception ex ) {
						ta.append( "Exception occured ...\n" + ex + "\n" );
						ta.setCaretPosition( ta.getDocument().getLength() );
						ex.printStackTrace();
						connect.setEnabled( true );
						uriField.setEditable( true );
						draft.setEditable( true );
						close.setEnabled( false );
					}
				};

				close.setEnabled( true );
				connect.setEnabled( false );
				uriField.setEditable( false );
				draft.setEditable( false );
				cc.connect();
			} catch ( URISyntaxException ex ) {
				ta.append( uriField.getText() + " is not a valid WebSocket URI\n" );
			}
		} else if( e.getSource() == close ) {
			try {
				cc.close();
			} catch ( Exception ex ) {
				ex.printStackTrace();
			}
		}
	}

	public static void main( String[] args ) {
		WebSocket.DEBUG = true;
		String location;
		if( args.length != 0 ) {
			location = args[ 0 ];
			System.out.println( "Default server url specified: \'" + location + "\'" );
		} else {
			location = "ws://localhost:8887";
			System.out.println( "Default server url not specified: defaulting to \'" + location + "\'" );
		}
		new ChatClient( location );
	}

}

websocket的helloworld

define函数的用法

基于TCP/IP的回声服务器 (Linux环境)

define的函数用法

洛谷 p1089 津津的储蓄计划

JavaScript 高级程序设计客户端与服务器端的通信

Java基础ServerSocket、Socket服务端客户端连接的例子

C语言常量-#define与const的区别

#define常量的代入细节

epoll的简单使用

结构体的内存对齐

websocket的helloworld

define函数的用法

基于TCP/IP的回声服务器 (Linux环境)

define的函数用法

洛谷 p1089 津津的储蓄计划

JavaScript 高级程序设计 客户端与服务器端的通信

Java基础ServerSocket、Socket服务端客户端连接的例子

C语言常量-#define与const的区别

#define常量的代入细节

epoll的简单使用

结构体的内存对齐

JavaScript 高级程序设计客户端与服务器端的通信