如何设置 log4j 属性以便每个线程输出到自己的日志文件？

Question

我有一个线程类的多个实例在任何给定时间运行。 我有 log4j 设置用于满足日志记录需求。

我需要一种方法来设置 log4j，以便线程类的每个实例都将其日志输出到不同的日志文件中。

这是我所做的（以伪代码）

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 log4j.properties 文件：
假设您有 2 个名为 ThreadCheckEsportazioni 和 ThreadAllineaCodiciTrasportoBDN 的线程，

# 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

您必须在每个线程中设置：

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

对于 ThreadCheckEsportazioni 和

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

线程 ThreadAllineaCodiciTrasportoBDN >