首先SpringBoot实现了它自己的日志框架即默认日志Logback,可以直接在SpringBoot配置文件配置 比如logging.path=xx,logging.level.root=xx等等,启动项目会自动生成对应的日志文件并记录,但是不能实现json格式的日志存储,所以为了满足需要,我们可以选择自定义的的日志并配置,
SpringBoot自1.4以上的版本开始,不支持log4日志转而开始使用log4j2日志,要使用自定义的日志框架的话,必须把SpringBoot默认使用的日志排除,提示log4j2支持json日志格式
log4j 2.x版本不再支持像1.x中的.properties后缀的文件配置方式,2.x版本配置文件后缀名只能为”.xml”,”.json”或者”.jsn”.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
在引入log4j2 依赖
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
<version>1.5.8.RELEASE</version>
</dependency>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
<log4j2.level>debug</log4j2.level>
<log4j2.root.path>/data/springcloud/logs/xx/config/config</log4j2.root.path>
<log4j2.error.path>/data/springcloud/logs/xx/config/config</log4j2.error.path>
<!-- 使用jsonLayout必须依赖jackson -->
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
</dependency>
<sourceDirectory>src/main/java</sourceDirectory>
<resources>
<resource>
<directory>src/main/resources</directory>
<filtering>true</filtering>
<includes>
<include>**/*</include>
</includes>
</resource>
</resources>
添加必须的插件
<plugin>
<artifactId>maven-resources-plugin</artifactId>
<configuration>
<encoding>utf-8</encoding>
<useDefaultDelimiters>true</useDefaultDelimiters>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
SpringBoot配置文件指定log4j.xml
logging.config=classpath:log4j2.xml
log4j2.xml的配置:
log4j2有很多的布局方式,其中 JosnLayout 表示记录方式是json方式
<?xml version="1.0" encoding="UTF-8" ?>
<configuration status="WARN">
<!--全局参数-->
<Properties>
<Property name="pattern">%d{yyyy-MM-dd HH:mm:ss,SSS} %5p %c{1}:%l - %m%n</Property>
</Properties>
<Loggers>
<Root level="DEBUG">
<AppenderRef ref="console"></AppenderRef>
<AppenderRef ref="rolling_file"></AppenderRef>
</Root>
<!--只将com.kk.springboot.demo写到文件-->
<!-- <Logger name="com.yiche.controller.Test" level="${log4j2.level}">
<AppenderRef ref="file"></AppenderRef>
</Logger>-->
</Loggers>
<Appenders>
<Console name="console" target="SYSTEM_OUT" follow="true">
<!--控制台只输出level及以上级别的信息-->
<ThresholdFilter level="INFO" onMatch="ACCEPT" onMismatch="DENY"/>
<!--<JsonLayout locationInfo="true" pattern="{pattern}">
<KeyValuePair key="timeMillis" value="$${date:yyyy-MM-dd'T'HH:mm:ss,SSS}" />
</JsonLayout>-->
<!--
<JsonLayout complete="false" compact="true">
<KeyValuePair key="timestame" value="$${date:yyyy-MM-dd'T'HH:mm:ss.SSSZ}" />
</JsonLayout>-->
<!--<PatternLayout>
<Pattern>${pattern}</Pattern>
</PatternLayout>-->
</Console>
<!-- 这个会打印出所有的信息,每次大小超过size,则这size大小的日志会自动存入按年份-月份建立的文件夹下面并进行压缩,作为存档-->
<RollingFile name="rolling_file"
fileName="${log4j2.root.path}.log"
filePattern="${log4j2.root.path}_%d{yyyy-MM-dd}.log">
<JsonLayout/>
<ThresholdFilter level="error" onMatch="ACCEPT" onMismatch="DENY"/>
<!-- <PatternLayout>
<Pattern>${pattern}</Pattern>
</PatternLayout>-->
<!--
<PatternLayout pattern="%d{yyyy.MM.dd 'at' HH:mm:ss z} %-5level %class{36} %M() @%L - %msg%n"/>
-->
<Policies>
<TimeBasedTriggeringPolicy/>
<SizeBasedTriggeringPolicy size="100 MB"/>
</Policies>
</RollingFile>
<File name="file" fileName="${log4j2.package.path}.log">
<!--<!–控制台只输出level及以上级别的信息(onMatch),其他的直接拒绝(onMismatch)–>-->
<ThresholdFilter level="DEBUG" onMatch="ACCEPT" onMismatch="DENY"/>
<!-- <PatternLayout>
<Pattern>${pattern}</Pattern>
</PatternLayout>-->
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] %-5level %logger{36} - %msg%n"/>
</File>
</Appenders>
</configuration>
参考:
https://www.cnblogs.com/baizhanshi/p/7503417.html
https://blog.csdn.net/rogger_chen/article/details/50587920
https://blog.csdn.net/zhou_kapenter/article/details/64123933
https://blog.csdn.net/yangzhuangqiu/article/details/49636661
http://book.51cto.com/art/201512/499576.htm
https://blog.csdn.net/wendingzhulu/article/details/52423522
SpringBoot自定义log4j2 日志
https://www.cnblogs.com/advancing/p/7922463.html
log4j2日志的布局和API
http://logging.apache.org/log4j/log4j-2.2/manual/layouts.html
http://logging.apache.org/log4j/2.x/manual/layouts.html#JSONLayout