备份我的log4j.properties
# Set log levels #log4j.rootLogger = DEBUG, Console# Output the log info to the Java Console #log4j.appender.Console = org.apache.log4j.ConsoleAppenderlog4j.appender.Console.Target = System.outlog4j.appender.Console.ImmediateFlush = truelog4j.appender.Console.Threshold = DEBUGlog4j.appender.Console.layout = org.apache.log4j.PatternLayoutlog4j.appender.Console.layout.ConversionPattern = <%-d{yyyy-MM-dd HH:mm:ss}> <%t> %l %n<%p> %m%n%n