在maven项目下src的main的resources下面增加log4j.properties，添加的内容如下
#Configure logging for testing: optionally with log file #log4j.rootLogger=debug,appender log4j.rootLogger=info,appender #log4j.rootLogger=error,appender log4j.appender.appender=org.apache.log4j.ConsoleAppender log4j.appender.appender.layout=org.apache.log4j.TTCCLayout