log4j:WARN No appenders could be found for logger (...)解決辦法

今天做項目的時候遇到個問題 ， 導入log4j包后，系統報錯log4j:WARN No appenders could be found for logger（...）

后來百度了下  找到解決辦法   特此記錄下：

在src下面新建file名為log4j.properties內容如下:
# Configure logging for testing: optionally with log file log4j.rootLogger=WARN, stdout # log4j.rootLogger=WARN, stdout, logfile

log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n

log4j.appender.logfile=org.apache.log4j.FileAppender log4j.appender.logfile.File=target/spring.log log4j.appender.logfile.layout=org.apache.log4j.PatternLayout log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n