Question

log4j的问题

log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: E:\logs\log.log (系统找不到指定的路径。)
at java.io.FileOutputStream.openAppend(Native Method)
at java.io.FileOutputStream.<init>(FileOutputStream.java:177)
at java.io.FileOutputStream.<init>(FileOutputStream.java:102)
at org.apache.log4j.FileAppender.setFile(FileAppender.java:282)
at org.apache.log4j.FileAppender.activateOptions(FileAppender.java:161)
at org.apache.log4j.DailyRollingFileAppender.activateOptions(DailyRollingFileAppender.java:215)
at org.apache.log4j.config.PropertySetter.activate(PropertySetter.java:256)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:132)
at org.apache.log4j.config.PropertySetter.setProperties(PropertySetter.java:96)
at org.apache.log4j.PropertyConfigurator.parseAppender(PropertyConfigurator.java:654)
at org.apache.log4j.PropertyConfigurator.parseCategory(PropertyConfigurator.java:612)
at org.apache.log4j.PropertyConfigurator.configureRootCategory(PropertyConfigurator.java:509)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:415)
at org.apache.log4j.PropertyConfigurator.doConfigure(PropertyConfigurator.java:316)
at org.apache.log4j.PropertyWatchdog.doOnChange(PropertyConfigurator.java:682)
at org.apache.log4j.helpers.FileWatchdog.checkAndConfigure(FileWatchdog.java:88)
at org.apache.log4j.helpers.FileWatchdog.run(FileWatchdog.java:107)
log4j:ERROR Either File or DatePattern options are not set for appender [D].
log4j:ERROR setFile(null,true) call failed.
java.io.FileNotFoundException: E:\logs\error.log (系统找不到指定的路径。)

Answer 1

E:\logs\log.log (系统找不到指定的路径。)
应该在调用setFile()方法前先在目录下建好E:\logs\log.log