你好，我需要从json解析从网站获取视频网址。但是我无法获得带有标签的视频，因为它使用javascript创建。
<script>var player = jwplayer('player-embed');
player.setup({"file": "http://dushanbe.mix.tj/video/2/45/5bafae1306081.mp4", "image": "/img/b/7/42/113989.jpg", "aspectratio": "16:9", "autostart": false, "controls": true, "displaydescription": false, "displaytitle": false, "flashplayer": "/player/jwplayer-7.8.7/jwplayer.flash.swf", "key": "n+94L7vjfQNGEin57ap3glk3iRNum2o7AeOIWw==", "mute": false, "ph": 1, "pid": "mS6Np6yN", "preload": "auto", "primary": "html5", "repeat": false, "stagevideo": false, "stretching": "uniform", "width": "100%"});</script>
在Java上加载JavaScript后如何解析网站？