背景說明
不是web 應用，單獨的java程序
報以下錯誤
log4j:WARN No appenders could be found for logger (xxxx).
log4j:WARN Please initialize the log4j system properly.
log4j:WARN See http://logging.apache.org/log4j/1.2/faq.html#noconfig for more info.
解決方案
調用 getLogger 之前。先初始化一下log系統
import org.apache.log4j.xml.DOMConfigurator;
BasicConfigurator.configure();