使用log4j，报警如下：
log4j:WARN No appenders could be found for logger
log4j:WARN Please initialize the log4j system properly.
maven项目，在项目下建source folder “/src/test/resources”；
在上面路径下建一个文件log4j.properties；
将如下内容复制到log4j.properties
# For Testing Guys
# Set root logger level to error log4j.rootLogger=INFO, Console ###### Console appender definition ####### # All outputs currently set to be a ConsoleAppender. log4j.appender.Console=org.apache.log4j.ConsoleAppender log4j.appender.Console.layout=org.apache.log4j.PatternLayout log4j.appender.Console.layout.ConversionPattern=%d{ABSOLUTE} %-5p [%c{3}] %m%n #log4j.appender.Console.layout.ConversionPattern=%d{ABSOLUTE} %-5p [%c] %m%n ###### File appender definition ####### log4j.appender.File=org.apache.log4j.DailyRollingFileAppender log4j.appender.File.File=spring.log log4j.appender.File.Append=false log4j.appender.File.layout=org.apache.log4j.PatternLayout log4j.appender.File.layout.ConversionPattern=%d{ABSOLUTE} %-5p [%c] %m%n
log4j.rootLogger=debug, stdout, R log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%5p - %m%n log4j.appender.R=org.apache.log4j.RollingFileAppender log4j.appender.R.File=firestorm.log log4j.appender.R.MaxFileSize=100KB log4j.appender.R.MaxBackupIndex=1 log4j.appender.R.layout=org.apache.log4j.PatternLayout log4j.appender.R.layout.ConversionPattern=%p %t %c - %m%n log4j.logger.com.codefutures=DEBUG