如何设置log4j属性，以便每个线程输出到自己的日志文件？

我有任何给定时间运行的线程类的多个实例。 我有log4j设置用于日志记录需求。

我需要一种方法来设置log4j，以便我的线程类的每个实例在不同的日志文件中输出其日志。

这是我做的（伪代码）

public class doSomething extends Thread { private Logger d_logger; public doSomething(int id){ d_logger = Logger.getLogger("doSomething"+id); String logFileName = "doSomething"+id+".log"; Properties prop = new Properties; prop.setProperty("doSomething"+id,"DEBUG, WORKLOG"); prop.setProperty("log4j.appender.WORKLOG","org.apache.log4j.FileAppender"); prop.setProperty("log4j.appender.WORKLOG.File", logFileName); prop.setProperty("log4j.appender.WORKLOG.layout","org.apache.log4j.PatternLayout"); prop.setProperty("log4j.appender.WORKLOG.layout.ConversionPattern","%d %c{1} - %m%n"); prop.setProperty("log4j.appender.WORKLOG.Threshold","INFO"); PropertyConfigurator.configure(prop); } public void run(){ d_logger.info("Starting to doSomething number" + id); } } 

虽然上面为我实例化的每个线程创建了一个文件，但它不会向这些文件输出任何内容。 任何帮助深表感谢。

Answer 1

它不会向文件输出任何内容，因为设置记录器的正确语法是：

 prop.setProperty("log4j.logger.doSomething"+id,"DEBUG, WORKLOG"); 

Answer 2

像这样设置你的log4j.properties文件：假设你有2个线程调用ThreadCheckEsportazioni和ThreadAllineaCodiciTrasportoBDN

 # imposta a debug il livello del logger di root e lo chiama debug e debugFile log4j.rootLogger=DEBUG #logger debug log4j.logger.it.consorziometis.sispc.exportbdn.job.ThreadAllineaCodiciTrasportoBDN=DEBUG, ThreadAllineaCodiciTrasportoBDN log4j.logger.it.consorziometis.sispc.exportbdn.job.ThreadCheckEsportazioni=DEBUG, ThreadCheckEsportazioni # Associa i tipi agli appendere #log4j.appender.debug=org.apache.log4j.ConsoleAppender log4j.appender.ThreadCheckEsportazioni=org.apache.log4j.RollingFileAppender log4j.appender.ThreadAllineaCodiciTrasportoBDN=org.apache.log4j.RollingFileAppender # Associa un PatternLayout al exportBdn. log4j.appender.ThreadCheckEsportazioni.layout=org.apache.log4j.PatternLayout log4j.appender.ThreadCheckEsportazioni.layout.ConversionPattern=[%d][%5p][%c]-> %m%n log4j.appender.ThreadCheckEsportazioni.File=/apps/consorziometis/procedure_automatiche/ExportBDNService/logs/exportBDN.log log4j.appender.ThreadCheckEsportazioni.MaxFileSize=10MB log4j.appender.ThreadCheckEsportazioni.MaxBackupIndex=10 log4j.appender.ThreadCheckEsportazioni.append=true # Associa un PatternLayout al allineaCodiciTrasporto. log4j.appender.ThreadAllineaCodiciTrasportoBDN.layout=org.apache.log4j.PatternLayout log4j.appender.ThreadAllineaCodiciTrasportoBDN.layout.ConversionPattern=[%d][%5p][%c]-> %m%n log4j.appender.ThreadAllineaCodiciTrasportoBDN.File=/apps/consorziometis/procedure_automatiche/ExportBDNService/logs/allineaCodiciTrasporto.log log4j.appender.ThreadAllineaCodiciTrasportoBDN.MaxFileSize=10MB log4j.appender.ThreadAllineaCodiciTrasportoBDN.MaxBackupIndex=10 log4j.appender.ThreadAllineaCodiciTrasportoBDN.append=true 

在每个线程中你必须设置：

 private static Logger log = Logger.getLogger(ThreadCheckEsportazioni.class); 

对于ThreadCheckEsportazioni和

 private static Logger log = Logger.getLogger(ThreadAllineaCodiciTrasportoBDN.class); 

对于线程ThreadAllineaCodiciTrasportoBDN