log4j实现日志输出

1、在maven项目中，pom.xml文件添加依赖：
　　<!-- LOGGING begin -->
        <dependency>
            <groupId>org.slf4j</groupId>
            <artifactId>slf4j-log4j12</artifactId>
            <version>1.7.7</version>
        </dependency>
   <!-- LOGGING end -->

2、在main/resources目录下创建log4j.properties，添加如下信息

log4j.rootLogger=DEBUG, WARN, Console, RollingFile
#Console
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.layout=org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=%d %-5p [%c{5}] - %m%n
#RollingFile
log4j.appender.RollingFile=org.apache.log4j.DailyRollingFileAppender
log4j.appender.RollingFile.File=../logs/cs.log
log4j.appender.RollingFile.layout=org.apache.log4j.PatternLayout
log4j.appender.RollingFile.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n
log4j.logger.cn.burgundyred=DEBUG # 指定日志作用位置