使用SLF4j/log4j将日志存储到.log文件中 [英] Storing log into .log file using SLF4j/log4j

问题描述

我正在使用SLF4J，并且根据要求，我必须将日志存储到.log文件中.但是，当我运行程序时，日志未写入日志文件.

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.

班级:

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.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

我可以在控制台上看到信息，警告，错误，但看不到调试值.！！

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

任何人都可以帮助我将日志存储到checkLog.log文件中吗??

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

推荐答案

我刚刚尝试了您给出的示例，但对我来说效果很好.我要检查/尝试几件事:

I just tried the example you gave and it worked fine for me. There are several things that I'd check/try:

• 检查是否可以写入C的根:-改为写入:

• Check if you can write to the root of C: - write this instead:

log4j.appender.file.File=checkLog.log 

登录到当前文件夹

添加控制台记录器以查看其是否可以在控制台中工作:

Add a console logger to see whether it works in console:

log4j.appender.console=org.apache.log4j.ConsoleAppender
log4j.appender.console.layout=org.apache.log4j.PatternLayout   
log4j.appender.console.layout.ConversionPattern=%d{ABSOLUTE} %5p %c{1}:%L - %m%n

log4j.appender.file=org.apache.log4j.RollingFileAppender   
log4j.appender.file.maxFileSize=100KB   
log4j.appender.file.maxBackupIndex=5  
log4j.appender.file.File=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,console,file

运行应用程序时，应该在控制台和文件中看到日志记录.

When you run the application, you should see logging in the console and in the file.

检查所有sl4j库都在路径中-您将在类路径上需要slf4j-api和slf4j-log4j12 jars

Check that all sl4j libraries are in the path - you will need slf4j-api and slf4j-log4j12 jars on your classpath

确保log4j.properties在类路径上

希望这会有所帮助.

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