java 如何设置 log4j 属性以便每个线程输出到自己的日志文件？
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How do I setup log4j properties so that each thread outputs to its own log file?
提问by Rohan Grover
I have multiple instances of a thread class running at any given time. I have log4j setup to be used for logging needs.
我有一个线程类的多个实例在任何给定时间运行。我有 log4j 设置可用于记录需求。
I need a way to setup log4j so that every instance of my thread class outputs its log in a different log file.
我需要一种设置 log4j 的方法，以便我的线程类的每个实例将其日志输出到不同的日志文件中。
Here is what I have done ( in pseudo code)
这是我所做的（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);
}
}
Though the above creates a file for every thread I instantiate, It does not output anything to those files. Any help is much appreciated.
尽管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。
回答by matt b
It's not outputting anything to the files because the correct syntax for setting up a logger is:
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");
回答by Enrico
set up your log4j.properties file like this:
suppose that you have 2 thread callded ThreadCheckEsportazioniand ThreadAllineaCodiciTrasportoBDN
像这样设置你的 log4j.properties 文件：假设你有 2 个线程被调用ThreadCheckEsportazioni并且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
in each thread you must set:
在每个线程中，您必须设置：
private static Logger log = Logger.getLogger(ThreadCheckEsportazioni.class);
for ThreadCheckEsportazioniand
对于ThreadCheckEsportazioni和
private static Logger log = Logger.getLogger(ThreadAllineaCodiciTrasportoBDN.class);
for thread ThreadAllineaCodiciTrasportoBDN
用于线程 ThreadAllineaCodiciTrasportoBDN
