Question

我需要为使用J2EE技术开发并部署在JBoss服务器中的网站添加视频会议功能。经过多次研究后我找到了WebRTC，但我想知道如何将它与jboss一起使用，因为大多数例子都将它用于node.js 一个简单的代码示例会很有帮助。谢谢。

修改
我试过webRTC，但我在信号部分遇到了一些问题：
我使用webSocket，这是我的类代码

package com.bean;
import java.io.IOException;
import java.util.Hashtable;
import java.util.Map;
import java.util.logging.Level;
import java.util.logging.Logger;

import javax.faces.bean.ApplicationScoped;
import javax.websocket.OnError;
import javax.websocket.OnMessage;

import javax.websocket.OnOpen;

import javax.websocket.Session;

import javax.websocket.server.ServerEndpoint;

import org.json.JSONException;

import org.json.JSONObject;

@ApplicationScoped
@ServerEndpoint("/webrtc")
public class WebRTCSocket {

    public static Map < String, Hashtable < String, Object[] >> sessionMap = new Hashtable < String, Hashtable < String, Object[] >> ();

    @SuppressWarnings("unchecked")
    @OnMessage
    public void message(String message, Session session) {
        System.out.println("entre a la methode");
        try {

            JSONObject jsonObject = new JSONObject(message);

            try {

                Object isOpen = jsonObject.get("open");

                if (isOpen != null && (Boolean) isOpen == true) {

                    String channel = (String) jsonObject.get("channel");

                    Object value = sessionMap.get(channel);

                    Hashtable < String, Object[] > sourceDestMap = null;

                    if (value == null) {

                        sourceDestMap = new Hashtable < String, Object[] > ();

                    } else sourceDestMap = (Hashtable < String, Object[] > ) value;

                    sourceDestMap.put(session.getId(), new Object[] {
                        session
                    });

                    sessionMap.put(channel, sourceDestMap);

                }

            } catch (JSONException je) {

                je.printStackTrace();

            }

            try {

                Object dataObj = jsonObject.get("data");

                JSONObject dataMapObj = (JSONObject) dataObj;

                //Object thisUserId = dataMapObj.get("userid");

                String channel = null;

                try {

                    channel = (String) dataMapObj.get("sessionid");

                } catch (JSONException json) {

                    channel = (String) jsonObject.get("channel");

                }

                /*
                JSONObject dataMapObj = (JSONObject) dataObj;

                Object thisUserId = dataMapObj.get("userid");

                String channel = (String) dataMapObj.get("sessionid");

                Hashtable < string, object > sourceDestMap = sessionMap.get(channel);

                if (thisUserId != null && sourceDestMap.get((String) thisUserId) == null) {

                    sourceDestMap.put((String) thisUserId, new Object[] {
                        message, session
                    });

                }

                for (String userId: sourceDestMap.keySet()) {

                    if (!userId.equals(thisUserId)) {

                        Session otherSession = (Session)((Object[]) sourceDestMap.get(userId))[1];

                        otherSession.getBasicRemote().sendText(message);

                    }

                }
                */

                Hashtable < String, Object[] > sourceDestMap = sessionMap.get(channel);

                if (sourceDestMap != null)

                for (String id: sourceDestMap.keySet()) {

                    if (!id.equals(session.getId())) {

                        Session otherSession = (Session)((Object[]) sourceDestMap.get(id))[0];

                        if (otherSession.isOpen())

                        otherSession.getBasicRemote().sendText(dataMapObj.toString());

                    }

                }

            } catch (JSONException je) {

                je.printStackTrace();

            }

        } catch (JSONException  je) {

            je.printStackTrace();

        }
     catch (IOException  je) {

        je.printStackTrace();

    }

        System.out.println("Message received:" + message);

    }

    @OnOpen
    public void open(Session session) {

        System.out.println("Channel opened");

    }

    // need to implement @OnClose too
    @OnError
    public void onError(Throwable error) {
        Logger.getLogger(WebRTCSocket.class.getName()).log(Level.SEVERE, null, error);
    }
}

这是我的xhtml页面

<html>
    <head>

    </head>

    <body>

          <script >

    var localVideo;
    var remoteVideo;
    var peerConnection;
    var peerConnectionConfig = {'iceServers': [{'url': 'stun:stun.services.mozilla.com'}, {'url': 'stun:stun.l.google.com:19302'}]};

    navigator.getUserMedia = navigator.getUserMedia || navigator.mozGetUserMedia || navigator.webkitGetUserMedia;
    window.RTCPeerConnection = window.RTCPeerConnection || window.mozRTCPeerConnection || window.webkitRTCPeerConnection;
    window.RTCIceCandidate = window.RTCIceCandidate || window.mozRTCIceCandidate || window.webkitRTCIceCandidate;
    window.RTCSessionDescription = window.RTCSessionDescription || window.mozRTCSessionDescription || window.webkitRTCSessionDescription;

    function pageReady() {
        localVideo = document.getElementById('localVideo');
        remoteVideo = document.getElementById('remoteVideo');

        serverConnection = new WebSocket('ws://localhost:8080/jasper/webrtc');
        console.log('serverConnection' + serverConnection.url);

        serverConnection.onmessage = gotMessageFromServer;

        var constraints = {
            video: true,
            audio: true,
        };

        if(navigator.getUserMedia) {
            navigator.getUserMedia(constraints, getUserMediaSuccess, errorHandler);
        } else {
            alert('Your browser does not support getUserMedia API');
        }
    }

    function getUserMediaSuccess(stream) {
        localStream = stream;
        localVideo.src = window.URL.createObjectURL(stream);
    }

    function start(isCaller) {
        peerConnection = new RTCPeerConnection(peerConnectionConfig);
        peerConnection.onicecandidate = gotIceCandidate;
        peerConnection.onaddstream = gotRemoteStream;
        peerConnection.addStream(localStream);

        if(isCaller) {
            peerConnection.createOffer(gotDescription, errorHandler);
        }
    }

    function gotMessageFromServer(event) {
        console.log('gotMessageFromServer' + JSON.parse(event.data));
        if(!peerConnection) start(false);

        var signal = JSON.parse(event.data);
        if(signal.sdp) {
            peerConnection.setRemoteDescription(new RTCSessionDescription(signal.sdp), function() {
                peerConnection.createAnswer(gotDescription, errorHandler);
            }, errorHandler);
        } else if(signal.ice) {
            peerConnection.addIceCandidate(new RTCIceCandidate(signal.ice));
        }
    }

    function gotIceCandidate(event) {
        if(event.candidate != null) {
            serverConnection.send(JSON.stringify({'ice': event.candidate}));
        }
    }

    function gotDescription(description) {
        console.log('got description');
        peerConnection.setLocalDescription(description, function () {
            serverConnection.send(JSON.stringify({'sdp': description}));
        }, function() {console.log('set description error')});
    }

    function gotRemoteStream(event) {
        console.log('got remote stream');
        remoteVideo.src = window.URL.createObjectURL(event.stream);
    }

    function errorHandler(error) {
        console.log(error);
    }


    </script>

     <video id="localVideo" autoplay="autoplay"  style="width:40%;"></video>
        <video id="remoteVideo" autoplay style="width:40%;"></video>

        <br />

        <input type="button" id="start" onclick="start(true)" value="Start Video"></input>

        <script type="text/javascript">
            pageReady();
        </script>
    </body>
</html>

我使用Jboss-as-7.1.0 final 所以我添加了这个依赖

<dependency>
    <groupId>org.jboss.spec.javax.websocket</groupId>
    <artifactId>jboss-websocket-api_1.0_spec</artifactId>
    <version>1.0.0.Final</version>
    <scope>provided</scope>
</dependency>

在控制台中

我收到了这个错误：

与'ws：// localhost：8080 / jasper / webrtc'的WebSocket连接失败：WebSocket握手期间出错：意外响应代码：404

修改我发现JBoss as 7.1.0不支持websocket

Answer 1

java代码

package org.acode;

import java.util.Hashtable;
import java.util.Map;
import javax.websocket.OnMessage;
import javax.websocket.OnOpen;
import javax.websocket.Session;
import javax.websocket.server.ServerEndpoint;
import org.json.JSONException;
import org.json.JSONObject;

@ServerEndpoint("/webrtc")
public class WebRTCSocket {

    public static Map<String, Hashtable<String, Object[]>> sessionMap = new Hashtable<>();

    @OnMessage
    public void message(String message, Session session) {
        try {
            System.out.println("receive message:  " + message);
            JSONObject jsonObject = new JSONObject(message);
            String channel = null;
            JSONObject dataMapObj = null;

            Hashtable<String, Object[]> sourceDestMap = null;

            try {
                boolean isOpen = jsonObject.optBoolean("open");
                channel = (String) jsonObject.get("channel");
                sourceDestMap = (Hashtable<String, Object[]>) sessionMap.get(channel);
                if (sourceDestMap == null) {
                    sourceDestMap = new Hashtable<String, Object[]>();
                }
                if (isOpen) {
                    /* Открытие канала */
                    sourceDestMap.put(session.getId(), new Object[]{session});
                    sessionMap.put(channel, sourceDestMap);
                } else {
                    /*Остальные переговоры*/
                    dataMapObj = jsonObject.optJSONObject("data");
                    if (dataMapObj != null) {
                        sourceDestMap = sessionMap.get(channel);
                        for (String id : sourceDestMap.keySet()) {
                            if (!id.equals(session.getId())) {
                                Session otherSession = (Session) ((Object[]) sourceDestMap.get(id))[0];
                                if (otherSession.isOpen()) {
                                    otherSession.getBasicRemote().sendText(dataMapObj.toString());
                                }
                            }
                        }
                    }
                }
            } catch (Exception je) {
                je.printStackTrace();
            }
        } catch (JSONException je) {
            je.printStackTrace();
        }
    }

    @OnOpen
    public void open(Session session
    ) {
        System.out.println("Channel opened");
    }

    // need to implement @OnClose too
}

js openSignallingChannel

var SIGNALING_SERVER = "ws://192.168.1.46:8080/webrtc";
    connection.openSignalingChannel = function (config) {
        config.channel = config.channel || this.channel;
        var websocket = new WebSocket(SIGNALING_SERVER);
        websocket.channel = config.channel;
        websocket.onopen = function () {
            websocket.push(JSON.stringify({
                open: true,
                channel: config.channel
            }));
            if (config.callback)
                config.callback(websocket);
        };
        websocket.onmessage = function (event) {
            config.onmessage(JSON.parse(event.data));
        };
        websocket.push = websocket.send;
        websocket.send = function (data) {
            websocket.push(JSON.stringify({
                data: data,
                channel: config.channel
            }));
        };
    };

J2EE应用程序中使用webRTC进行视频会议

1 个答案: