From my bitbucket repo, 2 years ago.
Since jingdong has changed its way of presenting the goods' price, this project cannot work anymore.
So this is just a small demo of how to crawl a website using
crawler4j(https://code.google.com/p/crawler4j/), htmlparser(http://htmlparser.sourceforge.net/) and AspriseOcr(http://asprise.com/product/ocr/)