Spring Boot 切换日志实现
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https://www.bilibili.com/video/BV1iJ411H74S?p=38
因为 Log4j 2 异步日志效率比 Logback 高很多，所以要切换成 Log4j 2 作为日志实现：
示例 切换日志实现
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>spring-boot-starter-parent</artifactId>
<groupId>org.springframework.boot</groupId>
<version>2.2.2.RELEASE</version>
</parent>
<groupId>io.github.jihch</groupId>
<artifactId>spring-boot-log</artifactId>
<version>1.0-SNAPSHOT</version>
<properties>
<maven.compiler.source>8</maven.compiler.source>
<maven.compiler.target>8</maven.compiler.target>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
<exclusions>
<!-- 排除 Logback -->
<exclusion>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<!-- 添加 Log4j 2 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-log4j2</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-configuration-processor</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</project>
application.properties
# 指定自定义 logger 对象日志级别
logging.level.io.github.jihch=trace
# 指定控制台输出消息格式
logging.pattern.console=[%-5level] %d{yyyy-MM-dd HH:mm:ss} %c [%thread]===== %msg%n
# 指定存放日志文件的具体路径
# logging.file=/logs/springboot.log #已经被废弃的属性
# 指定日志文件存放的目录，默认的文件名 spring.log
logging.file.path=/logs/springboot/
# 指定日志文件消息格式
logging.pattern.file=[%-5level] %d{yyyy-MM-dd HH:mm:ss} %c [%thread]===== %msg%n
# 指定项目使用的具体环境
spring.profiles.active=pro
logback-spring.xml
<?xml version="1.0" encoding="UTF-8" ?>
<configuration>
<!--
配置集中管理属性
可以直接该属性的 value 值
格式：${name}
-->
<property name="pattern" value="[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] -------- %m%n"></property>
<!-- 控制台日志输出的 appender -->
<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
<!-- 控制输出流对象 默认 System.out 改为 System.err -->
<target>System.err</target>
<!-- 日志消息格式配置 -->
<encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
<springProfile name="dev">
<pattern>${pattern}</pattern>
</springProfile>
<springProfile name="pro">
<pattern>[%-5level] %d{yyyy-MM-dd HH:mm:ss.SSS} %c %M %L [%thread] xxxxxxxx %m%n</pattern>
</springProfile>
</encoder>
</appender>
<!-- 自定义 logger 对象
additivity="false" 自定义 logger 对象是否继承 rootLogger
-->
<logger name="io.github.jihch" level="info" additivity="false">
<appender-ref ref="console"/>
</logger>
</configuration>
SpringBootLogApplication.java
package io.github.jihch;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
@SpringBootApplication
public class SpringBootLogApplication {
public static void main(String[] args) {
SpringApplication.run(SpringBootLogApplication.class, args);
}
}
SpringBootLogApplicationTests.java
package io.github.jihch;
import org.apache.logging.log4j.LogManager;
import org.junit.jupiter.api.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.boot.test.context.SpringBootTest;
@SpringBootTest
public class SpringBootLogApplicationTests {
// 声明日志记录器对象
public static final Logger LOGGER = LoggerFactory.getLogger(SpringBootLogApplicationTests.class);
@Test
public void contextLoads() {
// 打印日志信息
LOGGER.error("error");
LOGGER.warn("warn");
LOGGER.info("info"); // 默认日志级别
LOGGER.debug("debug");
LOGGER.trace("trace");
// 使用 Log4j 2 进行日志记录也还是会通过桥接器切换为 SLF4J 日志门面和 Logback 日志实现
org.apache.logging.log4j.Logger logger = LogManager.getLogger(SpringBootLogApplicationTests.class);
logger.info("log4j 2 info");
}
}
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.2.2.RELEASE)
[INFO ] 2023-02-28 22:29:33 io.github.jihch.SpringBootLogApplicationTests [main]===== Starting SpringBootLogApplicationTests on SK-20210414CLPG with PID 20100 (started by Administrator in E:\record\2023\2\27\spring-boot-log)
[DEBUG] 2023-02-28 22:29:33 io.github.jihch.SpringBootLogApplicationTests [main]===== Running with Spring Boot v2.2.2.RELEASE, Spring v5.2.2.RELEASE
[INFO ] 2023-02-28 22:29:33 io.github.jihch.SpringBootLogApplicationTests [main]===== The following profiles are active: pro
[INFO ] 2023-02-28 22:29:34 org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor [main]===== Initializing ExecutorService 'applicationTaskExecutor'
[INFO ] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== Started SpringBootLogApplicationTests in 1.169 seconds (JVM running for 2.791)
[ERROR] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== error
[WARN ] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== warn
[INFO ] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== info
[DEBUG] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== debug
[TRACE] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== trace
[INFO ] 2023-02-28 22:29:34 io.github.jihch.SpringBootLogApplicationTests [main]===== log4j 2 info
[INFO ] 2023-02-28 22:29:34 org.springframework.scheduling.concurrent.ThreadPoolTaskExecutor [SpringContextShutdownHook]===== Shutting down ExecutorService 'applicationTaskExecutor'
Process finished with exit code 0
示例 使用 Log4j 2 的配置文件
log4j2.xml
<?xml version="1.0" encoding="UTF-8"?>
<!--
status="warn" 日志框架本身的日志输出级别
monitorInterval="5" 自动加载配置文件的间隔时间，不低于 5 秒
-->
<Configuration status="debug" monitorInterval="5">
<!-- 日志处理 -->
<Appenders>
<!--
控制台输出 appender
target="SYSTEM_OUT" 或 target="SYSTEM_ERR"
-->
<Console name="Console" target="SYSTEM_OUT">
<PatternLayout pattern="%d{HH:mm:ss.SSS} [%t] [%-5level] %c{36}:%L --- %m%n" />
</Console>
</Appenders>
<!-- logger 定义 -->
<Loggers>
<!-- 使用 rootLogger 配置日志级别 level="trace" -->
<Root level="trace">
<!-- 指定 logger 使用的 appender -->
<AppenderRef ref="Console" />
</Root>
</Loggers>
</Configuration>
其他不变，trace 的日志太多，不粘输出了