Lombok @Slf4j 使用和配置

淩亂°似流年 2023-10-03 14:59 4阅读 0赞

### Lombok ###

**官方介绍**：Lombok项目是一个Java库，会自动插入编辑器和构建工具中，从而为您的Java增光添彩。永远不要再写另一个getter或equals方法，带有一个注释的您的类有一个功能全面的生成器，自动化您的日志记录变量等等。理解一下，使用Lombok，通过注解类，让你不再需要编写getter、equals等方法，减少样板代码的编写。

### @Slf4j ###

也可以叫：沙拉否J。SLF4J，即简单日志门面（Simple Logging Facade for Java），不是具体的日志解决方案，它只服务于各种各样的日志系统。按照官方的说法，SLF4J是一个用于日志系统的简单Facade，允许最终用户在部署其应用时使用其所希望的日志系统。

### Logback ###

logback 用于日志记录，可以将日志输出到控制台、文件、数据库和邮件等，相比其它所有的日志系统，logback 更快并且更小，包含了许多独特并且有用的特性。

logback 被分成三个不同的模块：`logback-core`，`logback-classic`，`logback-access`。

*  `logback-core`： 是其它两个模块的基础。
 *  `logback-classic`： 模块可以看作是 log4j 的一个优化版本，它天然的支持 SLF4J。
 *  `logback-access`： 提供了 http 访问日志的功能，可以与 Servlet 容器进行整合，例如：Tomcat、Jetty。

1.  pom依赖

<dependency>
        <groupId>org.projectlombok</groupId>
        <artifactId>lombok</artifactId>
        <version>1.18.12</version>
    </dependency>

1.  `resources`下`logback.xml`配置，也可通过`application.properties`进行日志配置

<?xml version="1.0" encoding="UTF-8"?>
    <configuration debug="false">
        
        <property name="LOG_HOME" value="/datalog/logs"/>
        
        <property name="LOG_NAME" value="testservice"/>
        
        
        
        <conversionRule conversionWord="clr"
                        converterClass="org.springframework.boot.logging.logback.ColorConverter"/>
        <conversionRule conversionWord="wex"
                        converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter"/>
        <conversionRule conversionWord="wEx"
                        converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter"/>
        
        <property name="CONSOLE_LOG_PATTERN"
                  value="${CONSOLE_LOG_PATTERN:-%clr(%d{yyyy-MM-dd HH:mm:ss.SSS}){faint} %clr(${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="%-12(%d{yyyy-MM-dd HH:mm:ss.SSS}) |-%-5level [%thread] %c [%L] -| %msg%n"/>
        
        <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
            <encoder>
                <pattern>${CONSOLE_LOG_PATTERN}</pattern>
                
            </encoder>
        </appender>
    
        
        <appender name="FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <File>${LOG_HOME}/${LOG_NAME}.log</File>
            <rollingPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedRollingPolicy">
                
                <FileNamePattern>${LOG_HOME}/${LOG_NAME}.log.%d{yyyy-MM-dd}.%i.log</FileNamePattern>
                
                <maxFileSize>200MB</maxFileSize>
                <maxHistory>3</maxHistory>
                <totalSizeCap>20GB</totalSizeCap>
            </rollingPolicy>
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${FILE_LOG_PATTERN}</pattern>
            </encoder>
        </appender>
    
        <logger name="org.apache" level="INFO"/>
        <logger name="httpclient" level="INFO"/>
        <logger name="sun.rmi" level="INFO"/>
        <logger name="javax.management" level="INFO"/>
        <logger name="org.springframework.beans" level="INFO"/>
        
        <logger name="org.springframework.core" level="INFO"/>
        <logger name="org.springframework" level="INFO"/>
    
        
        <root level="INFO">
            <appender-ref ref="CONSOLE"/>
            <appender-ref ref="FILE"/>
        </root>
    
    </configuration>

**再贴一个群友发的配置文件，这个更详细，springboot使用的话也可以叫：logback-spring.xml**

`logback.xml`一般用于非Spring Boot项目，`logback-spring.xml`用于Spring Boot项目；  
`logback-spring.xml` 只有在Spring应用程序运行的时候才生效，即带有`@SpringBootApplication`注解的类启动的时候才会生效。目前主流框架当然还属：`Spring`

<?xml version="1.0" encoding="UTF-8"?>
    <configuration debug="false" scan="true" scanPeriod="1000 seconds">
        <springProperty scope="context" name="spring.application.name" source="spring.application.name" defaultValue="app"/>
        <timestamp key="date" datePattern="yyyyMMdd"/>
        <property name="colorfulPattern"
                  value="%blue(%d{MM-dd HH:mm:ss}) [%boldYellow(%thread)] | %highlight(%-5level) | %boldGreen(%logger) %X{clientIp} %X{operateId} - %highlight(%msg) %n"/>
        <property name="defaultPattern"
                  value="%d{MM-dd HH:mm:ss} [%thread] | %-5level | %logger %X{clientIp} %X{operateId} - %msg %n"/>
        <property name="log.base_path" value="logs"/>
        
        <property name="log.max.size" value="100MB"/>
    
        
        <appender name="stdout" class="ch.qos.logback.core.ConsoleAppender">
            <encoder class="ch.qos.logback.classic.encoder.PatternLayoutEncoder">
                <pattern>${colorfulPattern}</pattern>
                
            </encoder>
        </appender>
    
        <appender name="trace.appender" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${log.base_path}/${spring.application.name}/trace.${spring.application.name}.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>
                    ${log.base_path}/archive/${spring.application.name}/trace.${spring.application.name}.%d{yyyyMMdd}.%i.log.zip
                </fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy
                        class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>${log.max.size}</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>${defaultPattern}</pattern>
            </layout>
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>TRACE</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
    
        <appender name="info.appender" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${log.base_path}/${spring.application.name}/info.${spring.application.name}.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>
                    ${log.base_path}/archive/${spring.application.name}/info.${spring.application.name}.%d{yyyyMMdd}.%i.log.zip
                </fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy
                        class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>${log.max.size}</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>${defaultPattern}</pattern>
            </layout>
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>INFO</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
    
        <appender name="debug.appender" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${log.base_path}/${spring.application.name}/debug.${spring.application.name}.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>
                    ${log.base_path}/archive/${spring.application.name}/debug.${spring.application.name}.%d{yyyyMMdd}.%i.log.zip
                </fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy
                        class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>${log.max.size}</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>${defaultPattern}</pattern>
            </layout>
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>DEBUG</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
    
        <appender name="error.appender" class="ch.qos.logback.core.rolling.RollingFileAppender">
            <file>${log.base_path}/${spring.application.name}/error.${spring.application.name}.log</file>
            <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                <fileNamePattern>
                    ${log.base_path}/archive/${spring.application.name}/error.${spring.application.name}.%d{yyyyMMdd}.%i.log.zip
                </fileNamePattern>
                <timeBasedFileNamingAndTriggeringPolicy
                        class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                    <maxFileSize>${log.max.size}</maxFileSize>
                </timeBasedFileNamingAndTriggeringPolicy>
            </rollingPolicy>
            <layout class="ch.qos.logback.classic.PatternLayout">
                <pattern>${defaultPattern}</pattern>
            </layout>
            
            <filter class="ch.qos.logback.classic.filter.LevelFilter">
                <level>ERROR</level>
                <onMatch>ACCEPT</onMatch>
                <onMismatch>DENY</onMismatch>
            </filter>
        </appender>
        
        
        
        <appender name="trace.async" class="ch.qos.logback.classic.AsyncAppender">
            <discardingThreshold>0</discardingThreshold>
            <queueSize>256</queueSize>
            <includeCallerData>true</includeCallerData>
            <appender-ref ref="trace.appender"/>
        </appender>
        
        <logger name="cn.felord.common.http.RestBodyAdvice" level="TRACE"/>
        <logger name="cn.felord.app.mapper" level="DEBUG"/>
        
        <springProfile name="dev">
            <logger name="org.springframework.security" level="TRACE" additivity="false" >
                <appender-ref ref="stdout"/>
            </logger>
            <logger name="org.springframework.security.oauth2" level="DEBUG" additivity="false" >
                <appender-ref ref="stdout"/>
            </logger>
            <logger name="org.springframework.web" level="TRACE" additivity="false" >
                <appender-ref ref="stdout"/>
            </logger>
        </springProfile>
    
        <root level="info">
            <appender-ref ref="stdout"/>
            <appender-ref ref="info.appender"/>
            <appender-ref ref="debug.appender"/>
            <appender-ref ref="error.appender"/>
            <appender-ref ref="trace.async"/>
        </root>
    </configuration>

1.  在需要使用日志的类上加@Slf4j 注解  
    log.info(“logindata：–》\{\}–》\{\}–》\{\}”, “111”, “222”, “333”);