1.在pom.xml中添加maven依賴

<dependency><groupId>log4j</groupId><artifactId>log4j</artifactId><version>1.2.17</version></dependency>

2.在resource中添加log4j.properties文件

3.log4j配置如下

控制臺只輸出error,我比較推薦的配置，干凈易查看。

log4j.rootLogger=DEBUG,stdout,I,D,E#控制臺輸出error日志 log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.Threshold = ERROR log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%5p [%t] - %m%n#priority:ERROR,WARN,INFO,DEBUG #if rootLogger is set to ERROR,info/debug will not be save,only error can be saved. ### 輸出info error到 to D://logs/info.log ### log4j.appender.I = org.apache.log4j.DailyRollingFileAppender log4j.appender.I.File = F://GXHS_TK_RAILWAY_SRC/railway_locomotives_moving_sets_project_code/tk_project/etl/logs/info.loglog4j.appender.I.Append = true log4j.appender.I.Threshold = INFO log4j.appender.I.layout = org.apache.log4j.PatternLayout log4j.appender.I.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n ### 輸出debug到 D://logs/log.log ### log4j.appender.D = org.apache.log4j.DailyRollingFileAppender log4j.appender.D.File = F://GXHS_TK_RAILWAY_SRC/railway_locomotives_moving_sets_project_code/tk_project/etl/logs/debug.loglog4j.appender.D.Append = true log4j.appender.D.Threshold = DEBUG log4j.appender.D.layout = org.apache.log4j.PatternLayout log4j.appender.D.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n ### 輸出error到 D://logs/error.log ### log4j.appender.E = org.apache.log4j.DailyRollingFileAppender log4j.appender.E.File =F://GXHS_TK_RAILWAY_SRC/railway_locomotives_moving_sets_project_code/tk_project/etl/logs/error.loglog4j.appender.E.Append = true log4j.appender.E.Threshold = ERROR log4j.appender.E.layout = org.apache.log4j.PatternLayout log4j.appender.E.layout.ConversionPattern = %-d{yyyy-MM-dd HH:mm:ss} [ %t:%r ] - [ %p ] %m%n

總結

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