如何实现Springboot项目保存本地系统日志文件，超详细，你值得拥有！【附源码】

冷不防 2023-01-13 06:27 232阅读 0赞

> 背景：我们都知道springboot默认日志是打印在控制台中的，不会以文件的形式进行保存。那么日后系统上线肯定是有需要对日志进行定位分析问题的，那么如何实现将控制台输出的日志保存起来？
> 
> **话不多说，实际效果如下，如果是你预期的那样，咱们接着往下看。**
> 
> **如果最后觉得日志工具对你有所帮助，请不要吝啬你的赞，直接pia的点亮就完了啦，up up up！！！**
> 
> 现在我把它分享出来，如下就是全码，拿走！不谢！

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70][]

如下是集成，按步骤来：

1、**在项目的resources目录下创建一个名为logback-spring.xml的日志配置文件，配置文件名最好跟我一样；**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 1][]

**2、编写xml文件内容：**

**code中每句都给出了注释，方便你们理解。**

<?xml version="1.0" encoding="utf-8"?>
    <configuration>
        
        <include resource="org/springframework/boot/logging/logback/defaults.xml"/>
    
        
        <springProperty scope="context" name="springAppName" source="spring.application.name"/>
        
        <springProperty scope="context" name="logback.fileInfoLog.maxFileSize" source="logback.fileInfoLog.maxFileSize" defaultValue="200MB" />
        
        <springProperty scope="context" name="logback.fileInfoLog.maxHistory" source="logback.fileInfoLog.maxHistory" defaultValue="15" />
        
        <springProperty scope="context" name="logback.fileInfoLog.totalSizeCap" source="logback.fileInfoLog.totalSizeCap" defaultValue="100GB" />
    
        
        <springProperty scope="context" name="logback.fileErrorLog.maxFileSize" source="logback.fileErrorLog.maxFileSize" defaultValue="200MB" />
        
        <springProperty scope="context" name="logback.fileErrorLog.maxHistory" source="logback.fileErrorLog.maxHistory" defaultValue="15" />
        
        <springProperty scope="context" name="logback.fileErrorLog.totalSizeCap" source="logback.fileErrorLog.totalSizeCap" defaultValue="100GB" />
    
        
        <springProperty scope="context" name="logback.fileHttpLog.maxFileSize" source="logback.fileHttpLog.maxFileSize" defaultValue="200MB" />
        
        <springProperty scope="context" name="logback.fileHttpLog.maxHistory" source="logback.fileHttpLog.maxHistory" defaultValue="15" />
        
        <springProperty scope="context" name="logback.fileHttpLog.totalSizeCap" source="logback.fileHttpLog.totalSizeCap" defaultValue="100GB" />
        
        <springProperty scope="context" name="logback.rootDir" source="logback.rootDir" defaultValue="logs"/>
        
        <property name="CONSOLE_LOG_PATTERN"
                  value="%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${LOG_LEVEL_PATTERN:-%5p}) %clr(${PID:- }){magenta} %clr(---){faint} %clr([%15.15t]){faint} %clr(%-40.40logger{39}){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}"/>
        
        <property name="FILE_LOG_PATTERN"
                  value="%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p %t [%c:%L]-%m%n"/>
        
        <appender name="consoleLog" class="ch.qos.logback.core.ConsoleAppender">
            <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>${CONSOLE_LOG_PATTERN}</pattern>
            </layout>
        </appender>
        
        <appender name="fileInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>ERROR</level>
                <onMatch>DENY</onMatch>
                <onMismatch>ACCEPT</onMismatch>
            </filter>
            <encoder>
                <pattern>${FILE_LOG_PATTERN}</pattern>
            </encoder>
            <file>${logback.rootDir}/${springAppName}.log</file>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy" >
                
                <fileNamePattern>${logback.rootDir}/%d{yyyy-MM,aux}/%d{yyyy-MM-dd,aux}/${springAppName}-%d{yyyy-MM-dd}.%i.log.zip</fileNamePattern>
                <maxFileSize>${logback.fileInfoLog.maxFileSize}</maxFileSize>
                <maxHistory>${logback.fileInfoLog.maxHistory}</maxHistory>
                <totalSizeCap>${logback.fileInfoLog.totalSizeCap}</totalSizeCap>
                <cleanHistoryOnStart>true</cleanHistoryOnStart>
            </rollingPolicy>
        </appender>
    
        
        <appender name="fileErrorLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
                <level>ERROR</level>
            </filter>
            <encoder>
                <pattern>${FILE_LOG_PATTERN}</pattern>
            </encoder>
            <file>${logback.rootDir}/${springAppName}-error.log</file>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy" >
                
                <fileNamePattern>${logback.rootDir}/%d{yyyy-MM,aux}/%d{yyyy-MM-dd,aux}/${springAppName}-error-%d{yyyy-MM-dd}.%i.log.zip</fileNamePattern>
                <maxFileSize>${logback.fileErrorLog.maxFileSize}</maxFileSize>
                <maxHistory>${logback.fileErrorLog.maxHistory}</maxHistory>
                <totalSizeCap>${logback.fileErrorLog.totalSizeCap}</totalSizeCap>
                <cleanHistoryOnStart>true</cleanHistoryOnStart>
            </rollingPolicy>
        </appender>
    
        
        <appender name="httpInfoLog" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <encoder>
                <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5p %m%n</pattern>
            </encoder>
            <file>${logback.rootDir}/${springAppName}-http.log</file>
            
            <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
                
                <fileNamePattern>${logback.rootDir}/%d{yyyy-MM,aux}/%d{yyyy-MM-dd,aux}/${springAppName}-http-%d{yyyy-MM-dd}.%i.log.zip</fileNamePattern>
                <maxFileSize>${logback.fileHttpLog.maxFileSize}</maxFileSize>
                <maxHistory>${logback.fileHttpLog.maxHistory}</maxHistory>
                <totalSizeCap>${logback.fileHttpLog.totalSizeCap}</totalSizeCap>
                <cleanHistoryOnStart>true</cleanHistoryOnStart>
            </rollingPolicy>
        </appender>
    
        <appender name="ASYNC_consoleLog" class="ch.qos.logback.classic.AsyncAppender">
            <appender-ref ref="consoleLog"/>
        </appender>
        <appender name="ASYNC_fileInfoLog" class="ch.qos.logback.classic.AsyncAppender">
            <appender-ref ref="fileInfoLog"/>
        </appender>
        <appender name="ASYNC_fileErrorLog" class="ch.qos.logback.classic.AsyncAppender">
            <appender-ref ref="fileErrorLog"/>
        </appender>
        <appender name="ASYNC_httpInfoLog" class="ch.qos.logback.classic.AsyncAppender">
            <appender-ref ref="httpInfoLog"/>
        </appender>
    
        <root level="info">
            <appender-ref ref="ASYNC_consoleLog" />
            <appender-ref ref="ASYNC_fileInfoLog" />
            <appender-ref ref="ASYNC_fileErrorLog" />
        </root>
        <logger name="log_http" additivity="false" level="INFO">
            <appender-ref ref="ASYNC_httpInfoLog"/>
        </logger>
    
    </configuration>

3、配置日志配置中所提到的springAppName；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 2][]

4、**使用这个默认不用配置pom依赖，最新的spring-boot-starter-web中已经集成了。如下，重启下项目就能自动生成日志文件了，而且是实时写入的，控制台输出什么，立马就更新进到该xxx.log里头。**

**记得，配置日志完后，记得刷新下maven或者关闭下项目重新打开，以免误导大家以为日志配置没用。**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 3][]  
**总结：启动项目，直接将logback-spring.xml文件复制到resources目录下就可以实现日志文件记录。是不是非常非常方便。**

--------------------

**另外：**

想要在控制台打印sql，如下：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 4][]

在配置文件中，加上这句就好了；

###sql打印
    logging.level.com.system.xiaoma.mapper=debug

--------------------

为了帮助更多小白从零打造java开发工程师，特地从CSDN官方那讨来了一套 ***《Java 工程师学习成长知识图谱》***！

官方出品必属精品！有兴趣的小伙伴可以了解一下！*特价优惠，限时限量，抓紧时间哦~*

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 5][]

--------------------

> ❤如果文章对您有所帮助，就在文章的右上角或者文章的末尾点个赞吧！(づ￣ 3￣)づ 
> 
> ❤如果喜欢大白兔分享的文章，就给大白兔点个关注吧！(๑′ᴗ‵๑)づ╭❤～
> 
> ❤对文章有任何问题欢迎小伙伴们下方留言或者入群探讨【群号：708072830】
> 
> ❤鉴于个人经验有限，所有观点及技术研点，如有异议，请直接回复讨论(请勿发表攻击言）

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70]: /images/20221022/8b15d0e317bb47c38e4a3519c37b395b.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 1]: /images/20221022/a8711dd7c8d54a13972959e5700f6422.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 2]: /images/20221022/de8f29185740468f9ad2be543f74a8e4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 3]: /images/20221022/4aa30269b60145e480e7f9b9ee39c2e1.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 4]: /images/20221022/9f2e4408f3324146b75d5e215ebf12fe.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80Mzk3MDc0Mw_size_16_color_FFFFFF_t_70 5]: /images/20221022/af8973b60cd3498a917aae2bbcc6d7c8.png