1、到官网 https://www.jwplayer.com/ 注册，取得key并下载免费版本（免费版只支持mp4格式）；
2、编辑如下网页即可在线播放：
<!DOCTYPE html> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <style type="text/css"> </style> <script type="text/javascript" src="/jwplayer/jwplayer.js"></script> <script type="text/javascript">jwplayer.key="注册后官网授予的key";</script> </head> <body> <div> <div id="myelement">loading...</div> <script type="text/javascript"> jwplayer("myelement").setup({ image: "/222.jpg", file: "/uploads/222.mp4" }); </script> </div> </body> </html>