http://hi.baidu.com/kenrome/blog/item/10ddf1dcd4508ab4cc116621.html
http://blog.efrees.com/libxml2-encoding-error-output-conversion-failed-due-to-conv-error.html
http://blog.efrees.com/libxml2-encoding-error-output-conversion-failed-due-to-conv-error.html
![](http://img.zemanta.com/pixy.gif?x-id=b616b208-80b2-8720-b5e2-7d74b150363e)