Log4J底线日志

Question

Log4j.properties

log4j.rootLogger=DEBUG, file

log4j.appender.file=org.apache.log4j.RollingFileAppender

log4j.appender.file.File=C:\\ParallelKMeansProject\\logs\\log.log
log4j.appender.file.MaxFileSize=50MB
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

Main.java

SimpleKMeans model = new SimpleKMeans();
model.setNumClusters(K);
model.buildClusterer(data);
log.info(model);

log.log

  

Cluster 0：41.051205,28.808497 Cluster 1：41.055391,28.785407 Cluster 2：41.054838,28.802617 Cluster 3：41.022421,28.788169 Cluster 4：   41.024494,28.784099群集5：41.018659,28.787669群集6：41.040879,28.753359

我的问题

日志文件是* txt扩展名。这些日志在文件中并排编写。我想打印底线。如下;

Cluster 0：41.051205,28.808497

群集1：41.055391,28.785407

第2组：41.054838,28.802617

如何更改日志属性％-5p％c {1}：％L - ％m％n