SSM 框架使用 log4j 日志

1、maven 工程引入依赖

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<dependency>     <groupId>log4j</groupId>     <artifactId>log4j</artifactId>     <version>1.2.17</version> </dependency>

2、mybatis 的全局配置文件中加上下列配置

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<settings>     <setting name="logImpl" value="LOG4J"/> </settings>

3、log4j.properties

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# For JBoss: Avoid to setup Log4J outside $JBOSS_HOME/server/default/deploy/log4j.xml! # For all other servers: Comment out the Log4J listener in web.xml to activate Log4J. #log4j.rootLogger=INFO, stdout, logfile log4j.rootLogger=DEBUG,stdout   log4j.appender.stdout=org.apache.log4j.ConsoleAppender log4j.appender.stdout.layout=org.apache.log4j.PatternLayout log4j.appender.stdout.layout.ConversionPattern=%d %p [%c] - %m%n   #log4j.appender.logfile=org.apache.log4j.RollingFileAppender #log4j.appender.logfile.File=system.log #log4j.appender.logfile.MaxFileSize=512KB # Keep three backup files. #log4j.appender.logfile.MaxBackupIndex=3 # Pattern to output: date priority [category] - message #log4j.appender.logfile.layout=org.apache.log4j.PatternLayout #log4j.appender.logfile.layout.ConversionPattern=%d %p [%c] - %m%n

4、log4j 日志效果

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2020-09-15 23:00:14,182 DEBUG [com.bocom.dao.mapper.LoginMapper.queryUserByLoginAndPassword] - ==>  Preparing: SELECT Id,UserName,Password,Gender,LoginName,Birthday,Image,ImageUrl FROM user WHERE LoginName=? AND Password=? 2020-09-15 23:00:14,250 DEBUG [com.bocom.dao.mapper.LoginMapper.queryUserByLoginAndPassword] - ==> Parameters: xiaomao(String), xiaomao123(String) 2020-09-15 23:00:14,301 DEBUG [com.bocom.dao.mapper.LoginMapper.queryUserByLoginAndPassword] - <==      Total: 1