声音播放

 function () {

    $('.audio').each(function () {

        var $this = $(this);

        var id = $this.attr('audioid');

        var src = $this.attr('src');

        var soundsize = $this.attr('soundsize');

        $this.append('<audio></audio>');

        $this.append('\

<div class="btn-group audio-control">\

    <button type="button" class="btn btn-default btn-repeat"><span class="glyphicon glyphicon-repeat"></span></button>\

    <button type="button" class="btn btn-default btn-play"><span class="glyphicon glyphicon-play"></span></button>\

    <button type="button" class="btn btn-default btn-pause"><span class="glyphicon glyphicon-pause"></span></button>\

    <button class="btn btn-default" disabled="disabled">\

        <div class="progress">\

            <div class="progress-bar" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width:0;">\

                <span class="sr-only">60% Complete</span>\

            </div>\

        </div>\

    </button>\

    <button class="btn btn-default btn-size" disabled="disabled"></button>\

</div>');



        var width = (soundsize < 20 ? 20 : soundsize > 60 ? 60 : soundsize) * 300 / 60;

        $this.find('.progress').width(width);

        var $btnplay = $this.find('.btn-play');

        var $btnpause = $this.find('.btn-pause').hide();

        var $btnrepeat = $this.find('.btn-repeat');

        var $btnsize = $this.find('.btn-size').text(soundsize + 's');

        var $audio = $this.find('audio');

        var $progressbar = $this.find('.progress-bar');



        $btnplay.bind('click', function () {

            if (!$audio.attr('src')) {

                $.ajax({

                    url: 'Sound.ashx',

                    data: { id: id, url: src },

                    dataType: 'json',

                    type: 'POST',

                    success: function (data, textStatus, jqXHR) {

                        // 加载音频文件

                        if ($audio.attr('src') != data.url) {

                            $audio.bind({

                                'canplaythrough': function () {

                                    //alert('音频文件已经准备好，随时待命');

                                    this.volume = 1;

                                    this.play();

                                },

                                'timeupdate': function () {

                                    // 跟踪进度

                                    var duration = this.duration;

                                    var currentTime = this.currentTime;

                                    $progressbar.width((currentTime / this.duration) * width);

                                },

                                'pause': function () {

                                    $btnplay.show();

                                    $btnpause.hide();

                                },

                                'ended': function () {

                                    $btnplay.show();

                                    $btnpause.hide();

                                },

                                'playing': function () {

                                    $btnplay.hide();

                                    $btnpause.show();

                                }

                            });

                            $audio.attr('src', data.url);

                        } 

                    }

                });

            }

            else {

                $audio[0].play();

            }

        });

        $btnpause.bind('click', function () {

            $audio[0].pause();

        });



        $btnrepeat.bind('click', function () {

            $audio[0].currentTime = 0;

            $audio[0].play(); ;

        });

    })



public void ProcessRequest(HttpContext context)

        {

            context.Response.ContentType = "text/plain";

            

            

            // 下载音频文件

            var id = context.Request["id"];

            var url = context.Request["url"];



            // 判断文件是否存在

            var filepath = "/Audio/" + id + ".mp3";

            if (System.IO.File.Exists(context.Server.MapPath(filepath)))

            {

                context.Response.Write("{\"url\":\"" + filepath + "\"}");

                return;

            }



            HttpPost clientContext = new HttpPost(url);

            var data = clientContext.GetBytes();

            SpeexAudio speex = new SpeexAudio();

            try

            {

                var filename = speex.Decoder(data

                   , context.Server.MapPath("~/Audio/ffmpeg.exe")

                   , context.Server.MapPath("~/temp/")

                   , context.Server.MapPath(filepath)

                   , SpeexDecoderType.MP3);

                context.Response.Write("{\"url\":\"" + filepath + "\"}");

                return;

                //context.Response.Redirect("~/Audio/" + filename);

            }

            catch (Exception)

            {



            }



            //context.Response.Write("Hello World");

        }