整理了一些常用的Content-Type

application/javascript
application/javascript; charset=utf-8
application/json; charset=utf-8
application/json;charset=UTF-8
application/x-javascript
application/x-javascript; charset=utf-8
application/x-javascript; charset=UTF-8
application/x-shockwave-flash
font/woff
image/gif
image/jpeg
image/png
image/x-icon
text/css
text/css; charset=UTF-8
text/css;charset=UTF-8
text/html
text/html; charset=gb2312
text/html; charset=utf-8
text/html; charset=UTF-8
text/javascript
text/javascript; charset=utf-8
text/javascript; charset=UTF-8
text/javascript;charset=UTF-8
text/xml