log4j.rootLogger=info, ServerDailyRollingFile, stdout
log4j.appender.ServerDailyRollingFile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.ServerDailyRollingFile.DatePattern='.'yyyy-MM-dd
log4j.appender.ServerDailyRollingFile.File=C://logs/notify-subscription.log
log4j.appender.ServerDailyRollingFile.layout=org.apache.log4j.PatternLayout
log4j.appender.ServerDailyRollingFile.layout.ConversionPattern=%d - %m%n
log4j.appender.ServerDailyRollingFile.Append=truelog4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %p [%c] %m%n

package test;import org.apache.log4j.Level;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;public class Test {public Test(){System.out.println("yes");System.out.println("我是");System.out.println("猪");System.out.println("我是猪");}static Logger logger=Logger.getLogger(Test.class);public static void main(String[] args) {//PropertyConfigurator.configure("log4j.properties");// Use the default configuration.//BasicConfigurator.configure();// Set the logger level to Level.INFO
        logger.setLevel(Level.INFO);// This request will be disabled since Level.DEBUG < Level.INFO.logger.debug("This is debug.");// These requests will be enabled.logger.info("This is an info.");logger.warn("This is a warning.");logger.error("This is an error.");logger.fatal("This is a fatal error.");Test test=new Test();}}