浅谈因为项目中的Logback于Nacos的Logback冲突导致的项目启动失败 ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CO

问题: 

环境 :  Nacos 2.2.1   ,   Spring-cloud   Hoxton.SR1 , com.alibaba.cloud.version  2.2.8 (留意这个版本)

        最近新搭建了一次虚拟机, 然后重新部署了Nacos , 同时也在一个新项目里引入了Nacos 的服务注册功能 , 以下是服务Pom版本管理配置

    <properties>
        <java.version>1.8</java.version>
        <file_encoding>UTF-8</file_encoding>
        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
        <com.alibaba.cloud.version>2.2.8.RELEASE</com.alibaba.cloud.version>
    </properties>


 <dependencyManagement>
        <dependencies>
            <!--spring boot 2.2.2-->
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>2.2.2.RELEASE</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <dependency>
                <groupId>org.springframework.cloud</groupId>
                <artifactId>spring-cloud-dependencies</artifactId>
                <version>${spring-cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
            <!--spring cloud alibaba 2.2.8.RELEASE-->
            <dependency>
                <groupId>com.alibaba.cloud</groupId>
                <artifactId>spring-cloud-alibaba-dependencies</artifactId>
                <version>${com.alibaba.cloud.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

然后再实际使用模块pom文件中引入服务注册和配置管理 

    <dependencies>
        <!-- Nacos依赖-->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-discovery</artifactId>
        </dependency>
       <!-- 在没有引入一下pom时候服务注册是正常的 -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
        </dependency>
    </dependencies>

application.ymal 的配置如下 

spring:
  profiles: dev
  cloud:
    nacos:
      username: nacos
      password: nacos
      discovery:
        server-addr: 192.168.30.128:8848
        namespace: 281222d0-6848-4017-8768-c81df219e12
      config:
        bootstrap:
          enabled: true
        server-addr: ${spring.cloud.nacos.discovery.server-addr}
        file-extension: yml
        namespace: 281222d0-6848-4017-8768-c81df219e12
        auto-refresh: true

此时启动项目问题就显露了 , 在没有加上  spring-cloud-starter-alibaba-nacos-config 这个maven配置的时候服务是可以正常启动的 , 然后加了之后 服务根本就启动不起来 , 报错如下 

2023-03-31 10:30:06.710 ERROR 40924 --- [           main]o.s.boot.SpringApplication              : 826 : Application run failed

java.lang.IllegalStateException: Logback configuration error detected: 
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CONFIG_LOG_FILE] - 'File' option has the same value "C:\Users\huang\logs/nacos/config.log" as that given for appender [CONFIG_LOG_FILE] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CONFIG_LOG_FILE] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CONFIG_LOG_FILE] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[NAMING_LOG_FILE] - 'File' option has the same value "C:\Users\huang\logs/nacos/naming.log" as that given for appender [NAMING_LOG_FILE] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[NAMING_LOG_FILE] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[NAMING_LOG_FILE] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[REMOTE_LOG_FILE] - 'File' option has the same value "C:\Users\huang\logs/nacos/remote.log" as that given for appender [REMOTE_LOG_FILE] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[REMOTE_LOG_FILE] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[REMOTE_LOG_FILE] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CONFIG_LOG_FILE] - 'File' option has the same value "C:\Users\huang\logs/nacos/config.log" as that given for appender [CONFIG_LOG_FILE] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CONFIG_LOG_FILE] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[CONFIG_LOG_FILE] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[NAMING_LOG_FILE] - 'File' option has the same value "C:\Users\huang\logs/nacos/naming.log" as that given for appender [NAMING_LOG_FILE] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[NAMING_LOG_FILE] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[NAMING_LOG_FILE] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[REMOTE_LOG_FILE] - 'File' option has the same value "C:\Users\huang\logs/nacos/remote.log" as that given for appender [REMOTE_LOG_FILE] defined earlier.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[REMOTE_LOG_FILE] - Collisions detected with FileAppender/RollingAppender instances defined earlier. Aborting.
ERROR in ch.qos.logback.core.rolling.RollingFileAppender[REMOTE_LOG_FILE] - For more information, please visit http://logback.qos.ch/codes.html#earlier_fa_collision
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.loadConfiguration(LogbackLoggingSystem.java:169)
	at org.springframework.boot.logging.AbstractLoggingSystem.initializeWithConventions(AbstractLoggingSystem.java:80)
	at org.springframework.boot.logging.AbstractLoggingSystem.initialize(AbstractLoggingSystem.java:60)
	at org.springframework.boot.logging.logback.LogbackLoggingSystem.initialize(LogbackLoggingSystem.java:118)
	at org.springframework.boot.context.logging.LoggingApplicationListener.initializeSystem(LoggingApplicationListener.java:313)
	at org.springframework.boot.context.logging.LoggingApplicationListener.initialize(LoggingApplicationListener.java:288)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEnvironmentPreparedEvent(LoggingApplicationListener.java:246)
	at org.springframework.boot.context.logging.LoggingApplicationListener.onApplicationEvent(LoggingApplicationListener.java:223)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.doInvokeListener(SimpleApplicationEventMulticaster.java:172)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:165)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:139)
	at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:127)
	at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:76)
	at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:53)
	at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:345)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:308)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226)
	at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215)
	at com.ko.assy.db.ms.KoAssyDbApplication.main(KoAssyDbApplication.java:29)

看表象 , 是Logback 引起的问题 , 初步怀疑是可能因为冲突了 , 因为我本地也使用了 Logback 的配置 ,  Logbak内容入如下

<?xml version="1.0" encoding="UTF-8"?>
<configuration scan="true" scanPeriod="10 seconds">
    <contextName>logback</contextName>
    <springProperty scope="context" name="logDir" source="log.dir" defaultValue=""/>
    <property name="log.path" value="${logDir}"/>
    <conversionRule conversionWord="clr" converterClass="org.springframework.boot.logging.logback.ColorConverter"/>
    <conversionRule conversionWord="wex"
                    converterClass="org.springframework.boot.logging.logback.WhitespaceThrowableProxyConverter"/>
    <conversionRule conversionWord="wEx"
                    converterClass="org.springframework.boot.logging.logback.ExtendedWhitespaceThrowableProxyConverter"/>
    <!-- 彩色日志格式 -->
    <property name="CONSOLE_LOG_PATTERN"
              value="${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}:%4line){cyan} %clr(:){faint} %m%n${LOG_EXCEPTION_CONVERSION_WORD:-%wEx}}"/>

    <!--1. 输出到控制台-->
    <appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
        <!--此日志appender是为开发使用，只配置最底级别，控制台输出的日志级别是大于或等于此级别的日志信息-->
        <!--        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">-->
        <filter class="ch.qos.logback.classic.filter.ThresholdFilter">
            <level>DEBUG</level>
        </filter>
        <encoder>
            <Pattern>${CONSOLE_LOG_PATTERN}</Pattern>
            <!-- 设置字符集 -->
            <charset>UTF-8</charset>
        </encoder>
    </appender>

    <appender name="ALL_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}/web-all.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%15.15thread]%-40.40logger{39}:%4line: %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>

        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 日志归档 -->
            <fileNamePattern>${log.path}/web-all-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文档保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
    </appender>

    <appender name="TRACE_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}/web-trace.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%15.15thread]%-40.40logger{39}:%4line: %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>

        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 日志归档 -->
            <fileNamePattern>${log.path}/web-trace-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文档保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
    </appender>

    <appender name="WARN_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}/web-warn.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%15.15thread]%-40.40logger{39}:%4line: %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>

        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 日志归档 -->
            <fileNamePattern>${log.path}/web-warn-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文档保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>WARN</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>

    </appender>

    <appender name="ERROR_FILE" class="ch.qos.logback.core.rolling.RollingFileAppender">
        <file>${log.path}/web-error.log</file>
        <encoder>
            <pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} %-5level [%15.15thread]%-40.40logger{39}:%4line: %msg%n</pattern>
            <charset>UTF-8</charset>
        </encoder>

        <!-- 日志记录器的滚动策略，按日期，按大小记录 -->
        <rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
            <!-- 日志归档 -->
            <fileNamePattern>${log.path}/web-error-%d{yyyy-MM-dd}.%i.log</fileNamePattern>
            <timeBasedFileNamingAndTriggeringPolicy class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                <maxFileSize>100MB</maxFileSize>
            </timeBasedFileNamingAndTriggeringPolicy>
            <!--日志文档保留天数-->
            <maxHistory>15</maxHistory>
        </rollingPolicy>
        <filter class="ch.qos.logback.classic.filter.LevelFilter">
            <level>ERROR</level>
            <onMatch>ACCEPT</onMatch>
            <onMismatch>DENY</onMismatch>
        </filter>

    </appender>
    <!--  忽略Nacos配置中心长轮询日志  -->
    <logger name="com.alibaba.nacos.client.config.impl" level="WARN"/>
    <!--  Mybatis SQL 输出  -->
    <logger name="org.mybatis" level="DEBUG">
        <appender-ref ref="CONSOLE"/>
        <appender-ref ref="ALL_FILE"/>
    </logger>


    <root level="info">
        <appender-ref ref="CONSOLE"/>
        <appender-ref ref="ALL_FILE"/>
        <appender-ref ref="WARN_FILE"/>
        <appender-ref ref="ERROR_FILE"/>
    </root>

</configuration>

问题排查解决

问题原因大概猜测是因为配置冲突引起的, 我就去看jar的内容 , 看看是nacos 的那个pom 再用logback , 最终在 nacos-config  -> nacos-client 2.1.0 中发现了Logback 的配置文件 

 罪魁祸首找到了 , 那么久来处理掉这个冲突 , 最直接最简洁的方式就是 , 直接在config 的pom 中屏蔽掉他的nacos-client 

        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-starter-alibaba-nacos-config</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>com.alibaba.nacos</groupId>
                    <artifactId>nacos-client</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

事实证明 , 无效,,,,,,, ,    此路不通  ,,,  就换条路  ,   去搜百度,  也是资料少的要死 ,  索性直接去GitHub上找Nacos  仓库 找 issues , 抱着试一试的态度 , 万幸 , 找到了一个2022年6月份提交的一个bug

 这个Issues 说得就是 nacos-logback 和  项目中的logback冲突 ,   并且这位仁兄还放出了报错信息 , 看报错内容是不是眼熟 , 嗯哼 ?  拨云见"日"了 ,  继续往下看 , 可以发现这就是一个 Nacos的Bug , 然后给出的临时解决方案就是 , 吧项目中的Logback 的 scan 属性 , set  = false ; 

 然后再次重启项目  , 豁然 启动了 , 为什么这样就可以了呢 ??

        <configuration> 元素中的 scan 属性可以用来控制 logback 是否自动扫描配置文件的变化并重新加载配置。该属性的默认值是 true，表示 logback 会周期性地检查配置文件的变化，并在检测到变化时重新加载配置文件。

具体来说，scan 属性的原理是通过启动一个单独的线程来监视配置文件的变化，一旦检测到配置文件发生了变化，就会重新读取配置文件并更新 logback 的内部状态。这样可以避免在修改配置文件后需要手动重启应用程序的情况，从而提高开发效率。

需要注意的是，如果您的配置文件较大，或者您的应用程序的日志记录量很大，那么频繁地重新加载配置文件可能会带来一定的性能开销。因此，在生产环境中建议将 scan 属性设置为 false，并在必要时手动重启应用程序以更新配置文件。

至此 , 问题算是临时性解决了 , 但是总让人感觉不满意,  总感觉是治标不治本 ,  nacos 高版本是否会解决这个问题呢  ?? 抱着好奇的态度 , 去 Mvn 中央仓库看看Nacos 的pom 版本 现在到那个版本了. ps: 我现在的项目使用的是 2.2.8  , 截止目前最新的版本是 2022.0.0.0-RC-1 

 从这里看 , client 的版本也更新了 , 

 那么 , 试试呗,  升级项目中管理的  spring-cloud-alibaba-dependencies 版本  ,

        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
<!--        <com.alibaba.cloud.version>2.2.8.RELEASE</com.alibaba.cloud.version>-->
        <com.alibaba.cloud.version>2022.0.0.0-RC1</com.alibaba.cloud.version>

果不其然,   出问题了 ,,,,,,真  tm  X蛋  , 最新版本的nacos pom  居然是 jdk 17  ,  我以为我11 都够新的了 , ,,,,,,,,,  搞到这里 , 如果大家不想继续搞了的话,  就用前面的解决办法 ,  把scan 设置为 false , ,,,  什么治标不治本 , 先启动再说 ,,,,爱咋滴咋滴,,,,,,有时间再搞 ,   

挣扎10分钟 , 决定还是不让这篇文章烂尾 ,  决心要处理下 

重新打开 mvn 中央仓库 , 大丈夫能屈能伸 ,  退而求其次 , 选个 使用量多的 , 低一版的 , 2021.1

 好奇看了一眼 , 这个nacos-client到底咋回事 ,  点进去一看,  豁.... 好家活,,,  

 废话少说 , pom 再一次换版本 ,  

        <spring-cloud.version>Hoxton.SR1</spring-cloud.version>
        <!--        nacos-client 的 logback 会和项目的logback 冲突  -->
        <!--        <com.alibaba.cloud.version>2.2.8.RELEASE</com.alibaba.cloud.version> -->
        <!--        ncom/alibaba/cloud/nacos/discovery/logging/NacosLoggingListener has been compiled by a more recent version of the Java Runtime (class file version 61.0), this version of the Java Runtime only recognizes class file versions up to 55.0  -->
        <!--        最新包需要jdk17编译  -->
        <!--        <com.alibaba.cloud.version>2022.0.0.0-RC1</com.alibaba.cloud.version> -->
        <com.alibaba.cloud.version>2021.1</com.alibaba.cloud.version>

完美启动文章来源地址https://www.toymoban.com/news/detail-456750.html

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