https://code.google.com/p/leveldb/downloads/list
可以下在leveldb的源码编译安装
编译时出错,参考:http://blog.solrex.org/articles/cxx11-changes-in-levedb-compiling-error.html 修复
http://download.csdn.net/detail/fox1987/8024937
使用说明参见
http://www.pipetips.com/entries/2012/09/06/8356.html