log4j related configuration

http://jingyan.baidu.com/article/90895e0f97a37b64ec6b0bc6.html

http://jingyan.baidu.com/article/ce09321b5632612bff858fcd.html

http://blog.csdn.net/linwei_1029/article/details/8844939

http://blog.csdn.net/xuanjiewu/article/details/7587586

http://wenku.baidu.com/link?url=DC6FeSmAwf9dPwCHPT4OVY4rsv8ezoGqIy5mDB_Sb68g5wdVxzGozrsBM_v1ZriOROmPxIiWAFRjMKKnV36hDFgIzqvCjvJ265_PkG-Yd-W

 

http://blog.csdn.net/azheng270/article/details/2173430/

http://blog.csdn.net/caolaosanahnu/article/details/6771075

http://www.cnblogs.com/JAYIT/p/4100859.html

 

http://blog.csdn.net/projava/article/details/7344839