忘了贴错误提示信息:
log4j:WARN No appenders could be found for logger (MyCar).log4j:WARN Please initialize the log4j system properly.
log4j:WARN No appenders could be found for logger (MyCar).log4j:WARN Please initialize the log4j system properly.
在你的java 启动参数VM 加上 -Dlog4j.configuration=file:/d:/log4j.properties
那么在程序中,不需要调用PropertyConfigurator("file"),直接定义logger就可以了.private static Logger logger = Logger.getLogger(ClassName.class.getName());
....
logger.warn("something");
...
等定义中,L大写了,改成小写就没问题。不过还是感谢各位的帮助,使我懂了不少新东西。