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<a href="http://www.blogjava.net/Green-nut/articles/332202.html">http://www.blogjava.net/Green-nut/articles/332202.html</a>

<a href="http://www.buildapp.net/Java/show.asp?id=20280">http://www.buildapp.net/Java/show.asp?id=20280</a>

<a href="http://weixiaolu.iteye.com/blog/1479656">http://weixiaolu.iteye.com/blog/1479656</a>

<a href="http://blog.csdn.net/whycold/article/details/6153865">http://blog.csdn.net/whycold/article/details/6153865</a>