log4j - log4j-DailyRollingFileAppender，文件不按小时滚动

Question

对于DailyRollingFileAppender，我具有以下简单的Test类，以便每小时滚动日志文件。我面临的问题是，即使我将其设置为“ .'yyyy-MM-dd-HH”，它似乎也不每小时都会滚动到新的日志文件。知道我在代码中做错了什么吗？

public class Test {
  static Logger logger = Logger.getLogger(Test.class);

  public static void main(String args[]) throws Exception {
      String pattern = "%-20d{dd MMM yyyy HH:mm:ss} [%-5p] - %m%n";

    PatternLayout patternLayout = new PatternLayout(pattern);  

    //CREATE APPENDER.       
    DailyRollingFileAppender myAppender = new DailyRollingFileAppender(patternLayout, "TestOrig.log", "'.'yyyy-MM-dd-HH");

    //ADD APPENDER & LEVEL.
    logger.addAppender(myAppender);
    logger.setLevel   ((Level) Level.DEBUG);


//WRITE MESSAGES.
logger.debug("Successful");
logger.info ("Failed" );
logger.warn ("Failed" );
logger.error("Successful");
logger.fatal("Failed"); 

    while(true)
    {           
        Thread.sleep(1000);
    } 
  }
}

Answer 1

使用@Singleton和@Schedule为您的计时器服务创建一个类似于ejb cron的时间表。

import javax.ejb.Schedule;
import javax.ejb.Singleton;


@Singleton
public class Cron {
        static Logger logger = Logger.getLogger(Test.class);
    @Schedule(second="0", minute="0", hour="0", dayOfWeek="*", persistent=false)
    public void rollLogs() {
        logger.info("midnight");
    }
}