springboot整合log4j

引入依赖

        <dependency>
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-webartifactId>
            <version>2.5.2version>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.bootgroupId>
                    <artifactId>spring-boot-starter-loggingartifactId>
                exclusion>
            exclusions>
        dependency>
        <dependency> 
            <groupId>org.springframework.bootgroupId>
            <artifactId>spring-boot-starter-log4j2artifactId>
            <version>2.5.2version>
        dependency>

编写log4j.xml

可以指定某些包下面的日志级别,参考下面spring日志

"1.0" encoding="UTF-8"?>
<Configuration monitorInterval="180" packages="">
    <properties>
        <property name="LOG_HOME">logsproperty>
        <property name="PATTERN">%date{YYYY-MM-dd HH:mm:ss,SSS} %level [%thread][%file:%line] - %msg%n%throwableproperty>
    properties>
    <Appenders>
        
        <Console name="consoleAppender" target="SYSTEM_OUT">
            
            <PatternLayout
                    pattern="%style{%d{ISO8601}}{bright,green} %highlight{%-5level} [%style{%t}{bright,blue}] %style{%C{}}{bright,yellow}: %msg%n%style{%throwable}{red}"
                    disableAnsi="false" noConsoleNoAnsi="false"/>
        Console>
 
        
        
        <RollingFile name="allFileAppender"
                     fileName="${LOG_HOME}/all.log"
                     filePattern="${LOG_HOME}/$${date:yyyy-MM}/all-%d{yyyy-MM-dd}-%i.log.gz">
            
            <PatternLayout>
                <pattern>%d %p %C{} [%t] %m%npattern>
            PatternLayout>
            <Policies>
                
                
                
                <SizeBasedTriggeringPolicy size="100 MB"/>
                
                <TimeBasedTriggeringPolicy/>
            Policies>
            
            <DefaultRolloverStrategy max="100"/>
        RollingFile>
 
        
        <RollingFile name="debugFileAppender"
                     fileName="${LOG_HOME}/debug.log"
                     filePattern="${LOG_HOME}/$${date:yyyy-MM}/debug-%d{yyyy-MM-dd}-%i.log.gz">
            <Filters>
                
                <ThresholdFilter level="info" onMatch="DENY" onMismatch="NEUTRAL"/>
            Filters>
            
            <PatternLayout>
                <pattern>%d %p %C{} [%t] %m%npattern>
            PatternLayout>
            <Policies>
                
                
                
                <SizeBasedTriggeringPolicy size="100 MB"/>
                
                <TimeBasedTriggeringPolicy/>
            Policies>
            
            <DefaultRolloverStrategy max="100"/>
        RollingFile>
 
        
        <RollingFile name="infoFileAppender"
                     fileName="${LOG_HOME}/info.log"
                     filePattern="${LOG_HOME}/$${date:yyyy-MM}/info-%d{yyyy-MM-dd}-%i.log.gz">
            <Filters>
                
                <ThresholdFilter level="warn" onMatch="DENY" onMismatch="NEUTRAL"/>
            Filters>
            
            <PatternLayout>
                <pattern>%d %p %C{} [%t] %m%npattern>
            PatternLayout>
            <Policies>
                
                
                
                <SizeBasedTriggeringPolicy size="100 MB"/>
                
                <TimeBasedTriggeringPolicy/>
            Policies>
            
            
        RollingFile>
 
        
        <RollingFile name="warnFileAppender"
                     fileName="${LOG_HOME}/warn.log"
                     filePattern="${LOG_HOME}/$${date:yyyy-MM}/warn-%d{yyyy-MM-dd}-%i.log.gz">
            <Filters>
                
                <ThresholdFilter level="error" onMatch="DENY" onMismatch="NEUTRAL"/>
            Filters>
            
            <PatternLayout>
                <pattern>%d %p %C{} [%t] %m%npattern>
            PatternLayout>
            <Policies>
                
                
                
                <SizeBasedTriggeringPolicy size="100 MB"/>
                
                <TimeBasedTriggeringPolicy/>
            Policies>
            
            <DefaultRolloverStrategy max="100"/>
        RollingFile>
 
        
        <RollingFile name="errorFileAppender"
                     fileName="${LOG_HOME}/error.log"
                     filePattern="${LOG_HOME}/$${date:yyyy-MM}/error-%d{yyyy-MM-dd}-%i.log.gz">
            
            <PatternLayout>
                <pattern>%d %p %C{} [%t] %m%npattern>
            PatternLayout>
            <Policies>
                
                
                
                <SizeBasedTriggeringPolicy size="100 MB"/>
                
                <TimeBasedTriggeringPolicy/>
            Policies>
            
            <DefaultRolloverStrategy max="100"/>
        RollingFile>
 
        
        <RollingFile name="errorJsonAppender"
                     fileName="${LOG_HOME}/error-json.log"
                     filePattern="${LOG_HOME}/error-json-%d{yyyy-MM-dd}-%i.log.gz">
            <JSONLayout compact="true" eventEol="true" locationInfo="true"/>
            <Policies>
                <SizeBasedTriggeringPolicy size="100 MB"/>
                <TimeBasedTriggeringPolicy interval="1" modulate="true"/>
            Policies>
        RollingFile>
    Appenders>
 
    <Loggers>
        
        <Root level="debug">
            <AppenderRef ref="allFileAppender" level="all"/>
            <AppenderRef ref="consoleAppender" level="debug"/>
            <AppenderRef ref="debugFileAppender" level="debug"/>
            <AppenderRef ref="infoFileAppender" level="info"/>
            <AppenderRef ref="warnFileAppender" level="warn"/>
            <AppenderRef ref="errorFileAppender" level="error"/>
            <AppenderRef ref="errorJsonAppender" level="error"/>
        Root>
 
        <Logger name="springfox" level="INFO"/>
        
        <Logger name="org.springframework" level="info"/>
    Loggers>
 
Configuration>

application.xml

server:
  port: 8080
 
logging:
  config: classpath:log4j.xml

测试 

package org.example;
 
import jdk.nashorn.internal.runtime.logging.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
 
import javax.annotation.PostConstruct;
 
/**
 * @author cyz
 * @since 2024/3/12 17:38
 */
@Logger
@SpringBootApplication
public class Main {
    org.slf4j.Logger logger = LoggerFactory.getLogger(Main.class);
    public static void main(String[] args) {
        SpringApplication.run(Main.class);
    }
 
    @PostConstruct
    void testLog(){
        logger.info("输出info日志");
        logger.warn("输出warn日志");
        logger.debug("输出debug日志");
        logger.error("输出error日志");
    }
}

结果