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How to save console logs in SpringBoot project

王林forward: 2023-05-24 11:52:061248browse

SpringBoot console log saving configuration

Scenario: The console log needs to be saved in the SpringBoot project.

Implementation method:

1. Configure the configuration file application-prod.yml

as follows:

logging:
  config: classpath:logback-spring-prod.xml

2.logback-spring-prod.xml

This file is the path where the console print log is saved. The path configuration is as follows:

<?xml version="1.0" encoding="UTF-8"?>
 
<!-- 分级别异步文件日志输出配置 -->
<configuration>
    <!-- 日志级别 -->
    <property name="logLevel" value="INFO"></property>
    <!-- 日志地址 -->
    <property name="logPath" value="/usr/server/shop/logs/"></property>
    <property name="logPathDebug" value="/usr/server/shop/logs/debug/"></property>
    <property name="logPathInfo" value="/usr/server/shop/logs/info/"></property>
    <property name="logPathWarn" value="/usr/server/shop/logs/warn/"></property>
    <property name="logPathError" value="/usr/server/shop/logs/error/"></property>
    <!-- 最大保存时间 -->
    <property name="maxHistory" value="30"/>
    <!-- 异步缓冲队列的深度,该值会影响性能.默认值为256 -->
    <property name="queueSize" value="512"></property>
    <!--日志文件名前缀-->
    <property name="name" value="shop_prod"></property>
 
    <appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
        <encoder>
            <pattern>%black(%contextName -) %red(%d{yyyy-MM-dd HH:mm:ss}) %green([%thread]) %highlight(%-5level) %boldMagenta(%logger{60}) - %gray(%msg%n)</pattern>
        </encoder>
    </appender>
 
    <appender name="FILE_DEBUG" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>DEBUG</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <file>${logPathDebug}/${name}_debug.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${logPathDebug}/${name}_debug.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>50MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
        </encoder>
    </appender>
 
    <appender name="FILE_INFO" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>INFO</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <file>${logPathInfo}/${name}_info.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${logPathInfo}/${name}_info.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>50MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
        </encoder>
    </appender>
 
    <appender name="FILE_WARN" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <file>${logPathWarn}/${name}_warn.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${logPathWarn}/${name}_warn.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>50MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
        </encoder>
    </appender>
 
    <appender name="FILE_ERROR" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>
        <file>${logPathError}/${name}_error.log</file>
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <fileNamePattern>${logPathError}/${name}_error.log.%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <maxHistory>${maxHistory}</maxHistory>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>50MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
        </rollingPolicy>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [ %thread ] - [ %-5level ] [ %logger{50} : %line ] - %msg%n</pattern>
        </encoder>
    </appender>
 
    <appender name="ASYNC_LOG_DEBUG" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>${queueSize}</queueSize>
        <appender-ref ref="FILE_DEBUG"/>
    </appender>
 
    <appender name="ASYNC_LOG_INFO" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>${queueSize}</queueSize>
        <appender-ref ref="FILE_INFO"/>
    </appender>
 
    <appender name="ASYNC_LOG_WARN" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>${queueSize}</queueSize>
        <appender-ref ref="FILE_WARN"/>
    </appender>
 
    <appender name="ASYNC_LOG_ERROR" class="ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold>0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>${queueSize}</queueSize>
        <appender-ref ref="FILE_ERROR"/>
    </appender>
 
    <root level="${logLevel}">
        <!-- appender referenced after it is defined -->
        <appender-ref ref="STDOUT"/>
        <appender-ref ref="ASYNC_LOG_DEBUG"/>
        <appender-ref ref="ASYNC_LOG_INFO"/>
        <appender-ref ref="ASYNC_LOG_WARN"/>
        <appender-ref ref="ASYNC_LOG_ERROR"/>
    </root>
 
</configuration>

Note: The path where the log is stored in

<property name="logPath" value="/usr/server/shop/logs/"></property>

is /usr/server/shop/logs /stored under.

How does the SpringBoot project save the runtime log of the service?

This problem is relatively simple. You only need to complete two steps.

Configure the log4j output log file

You need to quote the lombok dependency in the pom. The version can follow your springboot version.

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

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="60 seconds"
	debug="false">
	<contextName>StudentContext</contextName>
	<property name="log.path" value="./logs" />
	<!--输出到控制台 -->
	<appender name="console" class="ch.qos.logback.core.ConsoleAppender">
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
			<charset>UTF-8</charset>
		</encoder>
	</appender>
	<!-- 全部日志 -->
	<appender name="all" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>${log.path}/student/student.%d{yyyy-MM-dd}.log</fileNamePattern>
			<maxHistory>60</maxHistory>
		</rollingPolicy>
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
			<charset>UTF-8</charset>
		</encoder>
	</appender>
	<!-- 输出到warn -->
	<appender name="warn" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>${log.path}/student/student.warn.%d{yyyy-MM-dd}.log</fileNamePattern>
			<maxHistory>60</maxHistory>
		</rollingPolicy>
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
			<charset>UTF-8</charset>
		</encoder>
		<filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印WARN日志 -->
			<level>WARN</level>
			<onMatch>ACCEPT</onMatch>
			<onMismatch>DENY</onMismatch>
		</filter>
	</appender>
	
	<!-- 输出到error -->
	<appender name="error" class="ch.qos.logback.core.rolling.RollingFileAppender">
		<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
			<fileNamePattern>${log.path}/student/student.error.%d{yyyy-MM-dd}.log</fileNamePattern>
			<maxHistory>60</maxHistory>
		</rollingPolicy>
		<encoder>
			<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n</pattern>
			<charset>UTF-8</charset>
		</encoder>
		<filter class="ch.qos.logback.classic.filter.LevelFilter"><!-- 只打印ERROR日志 -->
			<level>ERROR</level>
			<onMatch>ACCEPT</onMatch>
			<onMismatch>DENY</onMismatch>
		</filter>
	</appender>
	<root level="info">
		<appender-ref ref="console" />
		<appender-ref ref="all" />
		<appender-ref ref="warn" />
		<appender-ref ref="error" />
	</root>
</configuration>

log4j output log file, just put it under resources. Note that the things in the fileNamePattern tag are replaced with logos Your microservice functions, such as the student management system I wrote, so I use student

Specify the location of this configuration file in the application

logging:
  level:
    com.netflix.discovery.shared.resolver.aws.ConfigClusterResolver: WARN
  config: classpath:logback-common.xml

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