LOG4J 保存到文件

1 mevan

<!--日志 start-->
<dependency>
	<groupId>org.slf4j</groupId>
	<artifactId>slf4j-api</artifactId>
	<version>1.7.25</version>
</dependency>
<dependency>
	<groupId>org.slf4j</groupId>
	<artifactId>slf4j-log4j12</artifactId>
	<version>1.7.25</version>
</dependency>

2 新建配置文件 log4j.properties

#保存路径
system.logPath=logs/
log4j.rootLogger=INFO,stdout

#默认配置
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
log4j.appender.stdout.layout.ConversionPattern=%d [%t] %-5p [%c] - %m%n

#自定义配置1 (可分别保存多个日志文件)
log4j.logger.myInfo=INFO,myInfo
log4j.appender.myInfo=org.apache.log4j.DailyRollingFileAppender
log4j.appender.myInfo.File=${system.logPath}/myInfo.log
log4j.appender.myInfo.DatePattern='.'yyyy-MM-dd
log4j.appender.myInfo.layout=org.apache.log4j.PatternLayout
log4j.appender.myInfo.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} INFO - %m%n

3 单元测试

package com.bsoft.webservice;

import org.junit.Test;
import org.apache.log4j.Logger;

/**
 * @author renxh
 * @using
 * @create 2022/4/27 18:07
 */
public class LogTest {

    private static final Logger logger = Logger.getLogger("myInfo");
    @Test
    public void saveLog(){
        logger.info("保存日志");
    }
}

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