springboot项目中配置slf4j+log4j12

第一步：添加依赖

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-api</artifactId>
    <version>1.7.5</version>
</dependency>

<dependency>
    <groupId>org.slf4j</groupId>
    <artifactId>slf4j-log4j12</artifactId>
    <version>1.7.5</version>
</dependency>

第二步：配置log4j.properties文件

#指定打印级别和打印位置
log4j.rootLogger=DEBUG,console,infoFile,errorFile
#控制台输出
log4j.appender.console = org.apache.log4j.ConsoleAppender
log4j.appender.console.Target = System.out
log4j.appender.console.Threshold=INFO
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%d{yy-MM-dd HH:mm:ss}]-[%p]-[%c]-%m%n

#输出info日志
log4j.appender.infoFile = org.apache.log4j.RollingFileAppender
log4j.appender.infoFile.File=./log/info.log
log4j.appender.infoFile.MaxFileSize=50mb
log4j.appender.infoFile.Threshold=INFO
log4j.appender.infoFile.layout=org.apache.log4j.PatternLayout
log4j.appender.infoFile.layout.ConversionPattern=[%p][%d{yy-MM-dd HH:mm:ss}][%c]%m%n
#info日志中指定打印的最低级别和最高级别
log4j.appender.infoFile.filter.infoFilter=org.apache.log4j.varia.LevelRangeFilter
log4j.appender.infoFile.filter.infoFilter.levelMin=INFO
log4j.appender.infoFile.filter.infoFilter.levelMax=INFO

#输出error日志
log4j.appender.errorFile = org.apache.log4j.RollingFileAppender
log4j.appender.errorFile.File=./log/error.log
log4j.appender.errorFile.MaxFileSize=50mb
log4j.appender.errorFile.Threshold=ERROR
log4j.appender.errorFile.layout=org.apache.log4j.PatternLayout
log4j.appender.errorFile.layout.ConversionPattern=[%p][%d{yy-MM-dd HH:mm:ss}][%c]%m%n

#打印sql日志
log4j.logger.org.mybatis=INFO
log4j.logger.java.sql=INFO
log4j.logger.java.sql.Statement=INFO
log4j.logger.java.sgl.ResultSet=INFO
log4j.logger.java.sq1.PreparedStatement=INFO