Java 日志文件未在 log4j 中生成
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log File not generating in log4j
提问by Hema Chandra
I am new to log4j. I have created a sample java program implementing log4j in it.
我是 log4j 的新手。我创建了一个在其中实现 log4j 的示例 java 程序。
Below is the java program:
下面是java程序：
package logging;
import org.apache.log4j.BasicConfigurator;
import org.apache.log4j.Logger;
public class Logging {
/**
* @param args the command line arguments
*/
private static Logger logger = Logger.getLogger(Logging.class);
public static void main(String[] args) {
BasicConfigurator.configure();
logger.trace("This is a Trace");
logger.debug("This is a Debug");
logger.info("This is an Info");
logger.warn("This is a Warn");
logger.error("This is an Error");
logger.fatal("This is a Fatal");
}
}
I am getting the output in the console screen.But the log file is notgetting generated. I have also configured my project in the Eclipse neon using the following link: Configuration
我在控制台屏幕中得到输出。但是没有生成日志文件。我还使用以下链接在 Eclipse neon 中配置了我的项目： 配置
I have done everything good. But the log file is not generating.When I implement log4j programmatically the file is getting generated.The following is my properties file:
我一切都做得很好。但是日志文件没有生成。当我以编程方式实现 log4j 时，文件正在生成。以下是我的属性文件：
#root
log4j.logger.com.apress.logging.log4j=debug,dest
log4j.additivity.com.apress.logging.log4j=false
#define the appender
log4j.appender.dest = org.apache.log4j.DailyRollingFileAppender
#set the name of the file
log4j.appender.dest.File=${user.home}/log.out
#setting the immediate flush to true (default)
log4j.appender.dest.ImmediateFlush=true
#setting the threshold
log4j.appender.dest.Threshold=ERROR
#setting the append to false, overwrite
log4j.appender.dest.Append=true
#set the DatePattern
log4j.appender.dest.DatePattern='.' yyyy-MM-dd
What do I need to do to have Log4J write to the log file?
我需要做什么才能让 Log4J 写入日志文件？
采纳答案by johnsi george
Ensure log4j.properties is in default package
确保 log4j.properties 在默认包中
# Root logger option
log4j.rootLogger=DEBUG, stdout, file
log4j.logger.infoLogger=DEBUG, infoLogger
log4j.additivity.infoLogger = false
# Redirect log messages to console
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.Target=System.out
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Redirect log messages to a log file, support file rolling.
log4j.appender.file=org.apache.log4j.RollingFileAppender
log4j.appender.file.File=E:\LOG\ConvertorLogger.log
log4j.appender.file.MaxFileSize=5MB
log4j.appender.file.MaxBackupIndex=10
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
# Redirect log messages to a log file, support file rolling.
log4j.appender.infoLogger=org.apache.log4j.RollingFileAppender
log4j.appender.infoLogger.File=E:\LOG\ConvertorInfoLogger.log
log4j.appender.infoLogger.MaxFileSize=5MB
log4j.appender.infoLogger.MaxBackupIndex=10
log4j.appender.infoLogger.layout=org.apache.log4j.PatternLayout
log4j.appender.infoLogger.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %-5p %c{1}:%L - %m%n
回答by lpgad
You can refer to this file：log4j.properties
可以参考这个文件：log4j.properties
log4j.rootLogger=WARN,stdout,R
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d [%t] %-5p %c -%m%n
log4j.appender.R=org.apache.log4j.RollingFileAppender
log4j.appender.R.File=${user.home}/log.out
log4j.appender.MaxFileSize=100KB
log4j.appender.R.MaxBackupIndex=1
log4j.appender.R.layout=org.apache.log4j.PatternLayout
log4j.appender.R.layout.ConversionPattern = %p %t %c -%m%n
log4j.logger.com.foo=WARN
