进行视频通话时，网络摄像头指示灯会亮起，但是什么也没显示

Question

我想通过我的JSP页面进行视频通话。我有JSP页面的代码。网络摄像头指示灯点亮，但是在JSP页面上没有捕获显示。

我从网上复制了源代码。我找不到该代码的问题。以前该代码可以正常显示，用于显示视频通话，但现在不行。

var my_number;
var number;
var video_out;
var img_out;
var img_self;
var phone;
var chat_in;
var chat_out;
function doLogin(){
    //alert("login camera");
    $("#videoDiv").show();
    alert("login camera");
    $("#PrescriptionDiv").show();

    $("#my-number").html($("#doctorUsername").val());
    alert("login camera"+$("#doctorUsername").val());
    // Generate Random Number if Needed
    my_number       = PUBNUB.$('my-number');
    number          = $("#doctorUsername").val();

    my_number.number    = number;
    my_number.innerHTML = ''+my_number.number;

    // Calling & Answering Service
    video_out = PUBNUB.$('video-display');
    img_out   = PUBNUB.$('video-thumbnail');
    img_self  = PUBNUB.$('video-self');

    phone     = window.phone = PHONE({
        number        : my_number.number, // listen on this line
        publish_key   : 'pub-c-561a7378-fa06-4c50-a331-5c0056d0163c',
        subscribe_key : 'sub-c-17b7db8a-3915-11e4-9868-02ee2ddab7fe',
        ssl           : true
    });

    // Ready to Send or Receive Calls
    phone.ready(function(){
        // Ready To Call
        set_icon('facetime-video');

        // Hanup Call
        PUBNUB.bind( 'mousedown,touchstart', PUBNUB.$('hangup'), function() 
  {
            phone.hangup();
            alert("Hang up");
            set_icon('facetime-video');
            $("#doctorsDiv span").removeClass("doctor-active- 
            checked").hide();
            $("#selectedDoctorUsername").val("");
        //  $("#chatDiv").hide();
            $("#videoDiv").hide();
        } );
    });

    // Receiver for Calls
        phone.receive(function(session){
        alert("recever for  session doctor");
        session.message(message);
        alert("Patient calling...");
        session.thumbnail(thumbnail);
        alert("recever for doctor session thumbnail");
        session.connected(connected);
        //alert("recever for doctor session connected");
      //  session.messagepresc(messagepresc);
      //  alert("recever for doctor session messagepresc");
        session.ended(ended);
    });

    // Chat
    chat_in  = PUBNUB.$('pubnub-chat-input');
    //alert("chat_in doctor"+chat_in);
    chat_out = PUBNUB.$('pubnub-chat-output');
    //alert("chat_out doctor"+chat_out);

     var chat_in1  = PUBNUB.$('pubnub-chat-input1');
    //alert("chat_in1 doctor"+chat_in1);
    var chat_out1 = PUBNUB.$('pubnub-chat-output1');
    //alert("chat_out1 doctor"+chat_out1); 


    // Send Chat MSG and update UI for Sending Messages
    PUBNUB.bind( 'keydown', chat_in, function(e) {
        alert(" Doctor PUBNUB.bind UI for Sending Messages");
        if ((e.keyCode || e.charCode) !== 13)     return true;
        if (!chat_in.value.replace( /\s+/g, '' )) return true;
    //    alert("Doctor PUBNUB.bind1 UI for Sending Messages");
        phone.send({ text : chat_in.value });
    //    alert("Doctor PUBNUB.bind2 UI for Sending Messages");
        add_chat( my_number.number + " (Me)", chat_in.value );
    //    alert("Doctor PUBNUB.bind3 UI for Sending Messages");
        chat_in.value = '';
    } );

    // Send Chat MSG and update UI for Sending Messages for prescription
    PUBNUB.bind( 'keydown', chat_in1, function(e) {
        // alert("Doctor  PUBNUB bind Send Chat MSG and update UI for 
   Sending Messages for prescription");
        if ((e.keyCode || e.charCode) !== 13)     return true;
        if (!chat_in1.value.replace( /\s+/g, '' )) return true;
       // alert("Doctor  PUBNUB bind Send Chat MSG and update UI for Sending 
   Messages for prescription1");

        phone.send({ text : chat_in1.value });
       // alert("Doctor  PUBNUB bind Send Chat MSG and update UI for Sending 
   Messages for prescription2");
        add_chatPres ( chat_in1.value );
       // alert("Doctor  PUBNUB bind Send Chat MSG and update UI for Sending 
   Messages for prescription3");
        chat_in1.value = '';
    } );

    // Update Local GUI for prescription
    function add_chatPres( textpresc ) {
     //alert("Doctor  PUBNUB bind Update Local GUI for prescription");
        if (!textpresc.replace( /\s+/g, '' )) return true;
       // alert("Doctor  PUBNUB bind Update Local GUI for prescription1");
        var newchatpresc       = document.createElement('div');
       // alert("Doctor  PUBNUB bind Update Local GUI for prescription2");
        newchatpresc.innerHTML = PUBNUB.supplant(
            '</strong> {message}', {
            message : safetxt(textpresc),
           // number  : safetxt(number)
        } );
       // alert("Doctor  PUBNUB bind Update Local GUI for prescription3");
        chat_out1.insertBefore( newchatpresc, chat_out1.firstChild );
       // alert("Doctor   chat_out1 Update Local GUI for prescription");
    } 

    // Problem Occured During Init
    phone.unable(function(details){
        console.log("Alert! - Reload Page.");
        console.log(details);
        set_icon('remove');
    });

    // Debug Output
    phone.debug(function(details){
        //alert("debug output doctor");
         //console.log(details);
    });   }

// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Video Session Connected
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
function connected(session) {
    video_out.innerHTML = '';
    video_out.appendChild(session.video);

    PUBNUB.$('selectedDoctorUsername').value = ''+session.number;
  //  alert("PUBNUB.$('selectedDoctorUsername 
doclive').value"+$('selectedDoctorUsername').value);
    sounds.play('sound/hi');
    console.log("Hi!");
}

// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Video Session Ended
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
function ended(session) {
    set_icon('facetime-video');
    img_out.innerHTML = '';
    sounds.play('sound/goodbye');
    console.log("Bye!");
}

// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
// Video Session Ended
// -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-
function set_icon(icon) {
    video_out.innerHTML = '<span class="glyphicon glyphicon-' +
        icon + '"></span>';
}