Java 如何使用一个 log4j 配置文件创建 2 个单独的日志文件？
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How can I create 2 separate log files with one log4j config file?
提问by djangofan
I can't figure out how to configure my log4j so that my debugLog and my reportsLog are separate from each other (not additive). Why is it, that in the configuration below, the reportsLog is always empty?
我不知道如何配置我的 log4j，以便我的 debugLog 和我的 reportsLog 彼此分开（不是附加的）。为什么在下面的配置中，reportsLog 总是空的？
log4j.rootLogger=TRACE, stdout, debugLog
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.appender.debugLog=org.apache.log4j.FileAppender
log4j.appender.debugLog.File=logs/debug.log
log4j.appender.debugLog.layout=org.apache.log4j.PatternLayout
log4j.appender.debugLog.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.reportsLog=DEBUG,reportsLog
log4j.appender.reportsLog=org.apache.log4j.FileAppender
log4j.appender.reportsLog.File=logs/reports.log
log4j.appender.reportsLog.layout=org.apache.log4j.PatternLayout
log4j.appender.reportsLog.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
And here is my Java code:
这是我的 Java 代码：
package test;
import org.apache.log4j.Logger;
import org.apache.log4j.PropertyConfigurator;
public class HelloLogger {
static final Logger debugLog = Logger.getLogger("debugLog");
static final Logger resultLog = Logger.getLogger("reportsLog");
public static void main(String[] args) {
PropertyConfigurator.configure("log4j.properties");
debugLog.debug("Hello debugLog message");
resultLog.debug("Hello reportsLog message");
}
}
采纳答案by laz
Try the following configuration:
尝试以下配置：
log4j.rootLogger=TRACE, stdout
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.appender.debugLog=org.apache.log4j.FileAppender
log4j.appender.debugLog.File=logs/debug.log
log4j.appender.debugLog.layout=org.apache.log4j.PatternLayout
log4j.appender.debugLog.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.appender.reportsLog=org.apache.log4j.FileAppender
log4j.appender.reportsLog.File=logs/reports.log
log4j.appender.reportsLog.layout=org.apache.log4j.PatternLayout
log4j.appender.reportsLog.layout.ConversionPattern=%d [%24F:%t:%L] - %m%n
log4j.category.debugLogger=TRACE, debugLog
log4j.additivity.debugLogger=false
log4j.category.reportsLogger=DEBUG, reportsLog
log4j.additivity.reportsLogger=false
Then configure the loggers in the Java code accordingly:
然后相应地在 Java 代码中配置记录器：
static final Logger debugLog = Logger.getLogger("debugLogger");
static final Logger resultLog = Logger.getLogger("reportsLogger");
Do you want output to go to stdout? If not, change the first line of log4j.propertiesto:
你想要输出去stdout吗？如果没有，将第一行更改log4j.properties为：
log4j.rootLogger=OFF
and get rid of the stdoutlines.
并摆脱stdout线条。
回答by Alexander
Modify your log4j.propertiesfile accordingly:
相应地修改您的log4j.properties文件：
log4j.rootLogger=TRACE,stdout
...
log4j.logger.debugLog=TRACE,debugLog
log4j.logger.reportsLog=DEBUG,reportsLog
Change the log levels for each logger depending to your needs.
根据您的需要更改每个记录器的日志级别。
