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  • log4j使用http://www.cnblogs.com/eflylab/archive/2007/01/11/618001.html

    package log4jTest.com;
    
    import java.io.FileReader;
    
    import org.apache.log4j.BasicConfigurator;
    import org.apache.log4j.Level;
    import org.apache.log4j.Logger;
    
    public interface log4jDemo {
    	public static void main(String[] args) {
    		Logger logger = Logger.getLogger(log4jDemo.class);
            
            //使用默认的配置信息,不需要写log4j.properties
            BasicConfigurator.configure();
            //设置日志输出级别为info,这将覆盖配置文件中设置的级别
            logger.setLevel(Level.INFO);
            //下面的消息将被输出
            logger.info("this is an info");
            logger.warn("this is a warn");
            logger.error("this is an error");
            logger.fatal("this is a fatal");
    	}
    }
    
    package log4jTest.com;
    
    import java.io.FileReader;
    
    import org.apache.log4j.BasicConfigurator;
    import org.apache.log4j.FileAppender;
    import org.apache.log4j.Level;
    import org.apache.log4j.Logger;
    import org.apache.log4j.SimpleLayout;
    
    public interface log4jDemo {
    	public static void main(String[] args) {
    		Logger logger = Logger.getLogger(log4jDemo.class);
            
    		SimpleLayout layout=new SimpleLayout();
    		FileAppender appender=null;
    		
    		try
            {
                //把输出端配置到F:/logs/log.log
                appender = new FileAppender(layout,"F:/logs/log.log",false);
            }catch(Exception e){   
            	e.printStackTrace();
            }
    		logger.addAppender(appender);//添加输出端
            logger.setLevel((Level)Level.DEBUG);//覆盖配置文件中的级别
    
            logger.info("this is an info");
            logger.warn("this is a warn");
            logger.error("this is an error");
            logger.fatal("this is a fatal");
    	}
    }
    

      

      

    一直都报这个这就有点痛苦了,下面的配置文件加上红色的就ok了,具体原因不解

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  • 原文地址:https://www.cnblogs.com/shuiliuhualuo/p/6023255.html
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