slf4j-simple是一款日志框架
它既可通过VM arguments来配置也可通过在classpath放置simplelogger.properties文件来配置
通过VM arguments来配置：
在classpath放置simplelogger.properties文件来配置：
1 # SLF4J's SimpleLogger configuration file 2 # Simple implementation of Logger that sends all enabled log messages, for all defined loggers, to System.err. 3 4 # Default logging detail level for all instances of SimpleLogger. 5 # Must be one of ("trace", "debug", "info", "warn", or "error"). 6 # If not specified, defaults to "info". 7 #org.slf4j.simpleLogger.defaultLogLevel=info 8 9 # Logging detail level for a SimpleLogger instance named "xxxxx". 10 # Must be one of ("trace", "debug", "info", "warn", or "error"). 11 # If not specified, the default logging detail level is used. 12 #org.slf4j.simpleLogger.log.xxxxx= 13 14 # Set to true if you want the current date and time to be included in output messages. 15 # Default is false, and will output the number of milliseconds elapsed since startup. 16 #org.slf4j.simpleLogger.showDateTime=false 17 18 # The date and time format to be used in the output messages. 19 # The pattern describing the date and time format is the same that is used in java.text.SimpleDateFormat. 20 # If the format is not specified or is invalid, the default format is used. 21 # The default format is yyyy-MM-dd HH:mm:ss:SSS Z. 22 #org.slf4j.simpleLogger.dateTimeFormat=yyyy-MM-dd HH:mm:ss:SSS Z 23 24 # Set to true if you want to output the current thread name. 25 # Defaults to true. 26 #org.slf4j.simpleLogger.showThreadName=true 27 28 # Set to true if you want the Logger instance name to be included in output messages. 29 # Defaults to true. 30 #org.slf4j.simpleLogger.showLogName=true 31 32 # Set to true if you want the last component of the name to be included in output messages. 33 # Defaults to false. 34 #org.slf4j.simpleLogger.showShortLogName=false