使用SLF4j/log4j将日志存储到.log文件中

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问题描述

我正在使用SLF4J，根据需要，我必须将日志存储到.log文件中.但是，当我运行程序时，日志未写入thelog文件.

类:

import org.slf4j.Logger;   
import org.slf4j.LoggerFactory;   


public class TestSLF4J {   

//  private static Logger _logger = LoggerFactory.getLogger(TestSLF4J.class);   
    private static Logger _logger = LoggerFactory.getLogger(TestSLF4J.class);   



    public static void main(String[] args) {   
        logger .debug("Sample debug message"); 
logger .info("Sample info message"); 
logger .warn("Sample warn message"); 
logger .error("Sample error message");   
    }   
}

log4j.properties

log4j.appender.file=org.apache.log4j.RollingFileAppender   
log4j.appender.file.maxFileSize=100KB   
log4j.appender.file.maxBackupIndex=5  
log4j.appender.file.File=C:/checkLog.log   
log4j.appender.file.threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout   
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n   
log4j.rootLogger=DEBUG,file

我可以看到信息，警告，在控制台上的错误，但没有调试值.!!

任何人都可以帮助我将登录存储到Checklog.log文件中.??

其他推荐答案

确保仅使用一个记录框架具有绑定.如果您有一个以上的记录框架罐，则可能请参阅输出.

我也有类似的问题，然后发现，班级路径具有slf4j-simple-1.7.5.jar以及log4j.jar.因此，日志输出仅在控制台上写入.从班级路径中删除第一条帮助.

Also check console, you should be getting a warning/error message.

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问题描述

I am using SLF4J and as per requirement i have to store the logs into the .log file. But when i run the program the log are not written into thelog file.

Class :

import org.slf4j.Logger;   
import org.slf4j.LoggerFactory;   


public class TestSLF4J {   

//  private static Logger _logger = LoggerFactory.getLogger(TestSLF4J.class);   
    private static Logger _logger = LoggerFactory.getLogger(TestSLF4J.class);   



    public static void main(String[] args) {   
        logger .debug("Sample debug message"); 
logger .info("Sample info message"); 
logger .warn("Sample warn message"); 
logger .error("Sample error message");   
    }   
}

log4j.properties

log4j.appender.file=org.apache.log4j.RollingFileAppender   
log4j.appender.file.maxFileSize=100KB   
log4j.appender.file.maxBackupIndex=5  
log4j.appender.file.File=C:/checkLog.log   
log4j.appender.file.threshold=DEBUG
log4j.appender.file.layout=org.apache.log4j.PatternLayout   
log4j.appender.file.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n   
log4j.rootLogger=DEBUG,file

i can see info,warn,error on console but not debug value..!!

Can anyone help me store log into the checkLog.log file.??

其他推荐答案

Make sure that you have binding with only one logging framework. If you have more than one logging framework jar then you might NOT see output.

I had similar problem then found that, class path had slf4j-simple-1.7.5.jar as well as log4j.jar. So log output was getting written only on console. Removing first one from class path helped.

Also check console, you should be getting a warning/error message.

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