http://codelife.me/blog/2012/11/03/jackson-polymorphic-deserialization/

http://itindex.net/blog/2012/04/26/1335420495061.html

http://blog.csdn.net/longronglin/article/details/7455891

http://www.hadooper.cn/dct/page/65785

http://www.softpanorama.org/Logs/log_analyzers.shtml