spring-boot2 config logging

Posted on 2022-12-16 In tech

需求说明

需求如下

- 配置spring boot logging 
     自定义配置日志 pattern/logger-level/file

实现

maven pom

<?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>

    <groupId>org.example</groupId>
    <artifactId>springboot-schedule-shade-lock</artifactId>
    <version>1.0-SNAPSHOT</version>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.3.1.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <properties>
        <shedlock.version>4.29.0</shedlock.version>
        
        <mysql-connector.version>5.1.49</mysql-connector.version>
    </properties>

    <dependencies>
        <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
        </dependency>

        <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-logging</artifactId>
        </dependency>
    </dependencies>
    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>
</project>

application.yml

logging:
  pattern:
    console: "%magenta(%date{ISO8601}) %blue([%thread]) %highlight([%level]) %cyan(%logger{15}:%line) - %green(%msg %n)"
    file: "%date{ISO8601} [%thread] [%level] %logger{15}:%line %msg%n"
  level:
    org.springframework.web: DEBUG
    org.apahe: ERROR
  file:
    path: ./logs
    name: ./logs/logger.log

main class


import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
@Slf4j
public class ScheduleApp {

    public static void main(String[] args) {
        SpringApplication.run(ScheduleApp.class, args);
        log.info(" start app ==== SUCCESS ===== ");
    }
}

结果

console 日志效果：

console pattern 配置color 让日志查看更加友好.
file 日志效果：

file pattern 保证了日志个是的统一，便于ELK进行收集.

解读

spring-boot默认使用spring-boot-logging作为日志模块，在使用中以slf4j 作为日志标准接口，使用logback 作为日志实现模块。

自定义配置file/console pattern
console 使用 color layout 配置颜色，便于控制台高效查看日志
指定logger level
在application.yml指定logger level
更复杂的日志输出，比如指定特殊的logger需要通过配置spring-logback实现

参考

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