How to save console logs in SpringBoot project

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></property>
    <!-- 日志地址 -->
    <property></property>
    <property></property>
    <property></property>
    <property></property>
    <property></property>
    <!-- 最大保存时间 -->
    <property></property>
    <!-- 异步缓冲队列的深度,该值会影响性能.默认值为256 -->
    <property></property>
    <!--日志文件名前缀-->
    <property></property>
 
    <appender>
        <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>
        <filter>
            <level>DEBUG</level>
            <onmatch>ACCEPT</onmatch>
            <onmismatch>DENY</onmismatch>
        </filter>
        <file>${logPathDebug}/${name}_debug.log</file>
        <rollingpolicy>
            <filenamepattern>${logPathDebug}/${name}_debug.log.%d{yyyy-MM-dd}.%i.log</filenamepattern>
            <maxhistory>${maxHistory}</maxhistory>
            <timebasedfilenamingandtriggeringpolicy>
                <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>
        <filter>
            <level>INFO</level>
            <onmatch>ACCEPT</onmatch>
            <onmismatch>DENY</onmismatch>
        </filter>
        <file>${logPathInfo}/${name}_info.log</file>
        <rollingpolicy>
            <filenamepattern>${logPathInfo}/${name}_info.log.%d{yyyy-MM-dd}.%i.log</filenamepattern>
            <maxhistory>${maxHistory}</maxhistory>
            <timebasedfilenamingandtriggeringpolicy>
                <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>
        <filter>
            <level>WARN</level>
            <onmatch>ACCEPT</onmatch>
            <onmismatch>DENY</onmismatch>
        </filter>
        <file>${logPathWarn}/${name}_warn.log</file>
        <rollingpolicy>
            <filenamepattern>${logPathWarn}/${name}_warn.log.%d{yyyy-MM-dd}.%i.log</filenamepattern>
            <maxhistory>${maxHistory}</maxhistory>
            <timebasedfilenamingandtriggeringpolicy>
                <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>
        <filter>
            <level>ERROR</level>
            <onmatch>ACCEPT</onmatch>
            <onmismatch>DENY</onmismatch>
        </filter>
        <file>${logPathError}/${name}_error.log</file>
        <rollingpolicy>
            <filenamepattern>${logPathError}/${name}_error.log.%d{yyyy-MM-dd}.%i.log</filenamepattern>
            <maxhistory>${maxHistory}</maxhistory>
            <timebasedfilenamingandtriggeringpolicy>
                <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>
        <!-- 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></appender-ref>
    </appender>
 
    <appender>
        <!-- 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></appender-ref>
    </appender>
 
    <appender>
        <!-- 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></appender-ref>
    </appender>
 
    <appender>
        <!-- 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></appender-ref>
    </appender>
 
    <root>
        <!-- appender referenced after it is defined -->
        <appender-ref></appender-ref>
        <appender-ref></appender-ref>
        <appender-ref></appender-ref>
        <appender-ref></appender-ref>
        <appender-ref></appender-ref>
    </root>
 
</configuration>

Note: The path where the log is stored in

<property></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>

	StudentContext
	<property></property>
	
	
		
			%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n
			UTF-8
		
	
	
	
		
			${log.path}/student/student.%d{yyyy-MM-dd}.log
			60
		
		
			%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n
			UTF-8
		
	
	
	
		
			${log.path}/student/student.warn.%d{yyyy-MM-dd}.log
			60
		
		
			%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n
			UTF-8
		
		
			WARN
			ACCEPT
			DENY
		
	
	
	
	
		
			${log.path}/student/student.error.%d{yyyy-MM-dd}.log
			60
		
		
			%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%thread] %logger{76}.%M\(%line\) - %msg%n
			UTF-8
		
		
			ERROR
			ACCEPT
			DENY
		
	
	
		
		
		
		
	

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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