今天找了些开源的项目，不过没时间看，先放着。呵呵。

关于数据库持久层操作 的开源项目

<script type="text/javascript"><!--google_ad_client = "pub-1387048795868953";google_ad_width = 728;google_ad_height = 90;google_ad_format = "728x90_as";google_ad_type = "text_image";google_ad_channel ="";google_color_border = "336699";google_color_bg = "FFFFFF";google_color_link = "0000FF";google_color_url = "008000";google_color_text = "000000";//--></script><script src="https://pagead2.googlesyndication.com/pagead/show_ads.js" type="text/javascript"></script> <scri