场景：

代码中存在使用logger.info输出数据到指定的文件中，然后用logstash去收集需要的数据插入到es中。

现象： 

logger.info输出的记录打断点在控制台上显示，但是在配置的日志输出文件中却找不到日志输出的内容。

log4j配置

如下：

打断点排查

 logger.info在控制台有打印输出，但是配置的日志输出文件中却什么也没有

14:53:02.737 [http-nio-8082-exec-3] INFO com.gisquest.platform.modules.funcmgr.web.FuncGroupItemController - {"opertion":"删除菜单分组\u201c在办办件1\u201d","ip":"192.168.100.88","staffname":"系统管理员","model":"菜单定制","id":"分组id:5b2a9f1e-828e-11ed-971c-3c7c3fba0919","userid":"8c7d3682-c080-4d4a-947f-af08e64576a2","url":"http://GisqPlatformDesigner-Rest.gisquest.com:8082/GisqPlatformDesigner-Rest/service//funcmgr/delete-group-item/5b2a9f1e-828e-11ed-971c-3c7c3fba0919","mac":"","object":"分组id:5b2a9f1e-828e-11ed-971c-3c7c3fba0919;分组名称:在办办件1;父分组:菜单管理","username":"admin"}

原因分析：

分析一：按道理讲我的日志输出在控制能看到了，按理说也会写入platform.log配置的文件中去。

 分析二：jar包冲突 网上提示说是日志包冲突了，我看了一下项目中的日志包如下，多出来了两个logback的包。

logback-core-1.2.3.jar
logback-class-1.2.3.jar

log4j-1.2.17.jar
log4j-api-2.17.2,jar
log4j-core-2.17.2.jar

slf4-api-1.17.10.jar
slf4j-kig4j12-1.7.10.jar
jcl-over-slf4j-1.7.10.jar
jul-to-slf4j-1.7.10.jar

排查一：logback的包是那个依赖中引进去的？

借助idea工具使用mvn dependency:tree 命令将依赖树打印出来，

定位：发现logback是gisquest-log-client-Spring4:jar中被引入进去了。

] +- com.gisquest.cloud:gisquest-log-client-Spring4:jar:1.0:compile
[INFO] |  \- com.gisquest.cloud:gisquest-log-client-common:jar:1.0:compile
[INFO] |     +- com.alibaba:fastjson:jar:1.2.83:compile
[INFO] |     +- org.projectlombok:lombok:jar:1.18.10:compile
[INFO] |     +- com.gisquest.cloud:gisquest-log-common:jar:1.0:compile
[INFO] |     |  +- org.codehaus.jackson:jackson-mapper-asl:jar:1.9.12:compile
[INFO] |     |  |  \- org.codehaus.jackson:jackson-core-asl:jar:1.9.12:compile
[INFO] |     |  \- cn.hutool:hutool-core:jar:5.6.6:compile
[INFO] |     +- com.gisquest.cloud:gisquest-log-autoscan:jar:1.0:compile
[INFO] |     |  \- com.gisquest.cloud:gisquest-log-entity:jar:1.0:compile
[INFO] |     |     +- com.baomidou:mybatis-plus-annotation:jar:3.4.2:compile
[INFO] |     |     \- io.swagger:swagger-annotations:jar:1.5.22:compile
[INFO] |     +- ch.qos.logback:logback-core:jar:1.2.3:compile
[INFO] |     +- ch.qos.logback:logback-classic:jar:1.2.3:compile
[INFO] |     \- cn.hutool:hutool-all:jar:5.8.3:compile
[INFO] +- com.gisquest:GisqPlatform-Apollo:jar:1.0.0:compile
[INFO] |  +- com.ctrip.framework.apollo:apollo-client:jar:1.3.0:compile
[INFO] |  |  \- com.google.inject:guice:jar:4.1.0:compile
[INFO] |  |     +- javax.inject:javax.inject:jar:1:compile
[INFO] |  |     \- aopalliance:aopalliance:jar:1.0:compile
[INFO] |  \- com.ctrip.framework.apollo:apollo-core:jar:1.3.0:compile
[INFO] |     \- com.google.code.gson:gson:jar:2.8.0:compile
[INFO] \- com.gisquest.wcspsdk:wcspsdk-server:jar:2.3.0.4-RELEASE:compile

解决方式：将该包中的logback排除掉

   <!-- 日志中心客户端 -->
        <dependency>
            <groupId>com.gisquest.cloud</groupId>
            <artifactId>gisquest-log-client-Spring4</artifactId>
            <version>1.0</version>
            <exclusions>
                <exclusion>
                   <groupId>ch.qos.logback</groupId>
                   <artifactId>logback-classic</artifactId>
               </exclusion>
               <exclusion>
                   <groupId>ch.qos.logback</groupId>
                   <artifactId>logback-core</artifactId>
               </exclusion>
              </exclusions>
        </dependency>

排除后再次测试，一切正常

 

2022-12-23 15:00:13,529 INFO  [platform.modules.funcmgr.web.FuncGroupItemController] - {"opertion":"删除菜单分组\u201c在办办件1\u201d","ip":"192.168.100.88","staffname":"系统管理员","model":"菜单定制","id":"分组id:5b2a9f1e-828e-11ed-971c-3c7c3fba0919","userid":"8c7d3682-c080-4d4a-947f-af08e64576a2","url":"http://GisqPlatformDesigner-Rest.gisquest.com:8082/GisqPlatformDesigner-Rest/service//funcmgr/delete-group-item/5b2a9f1e-828e-11ed-971c-3c7c3fba0919","mac":"","object":"分组id:5b2a9f1e-828e-11ed-971c-3c7c3fba0919;分组名称:在办办件1;父分组:菜单管理","username":"admin"}

参考：

彻底解决SLF4J的日志冲突的问题_zy苦行僧的博客-CSDN博客_日志冲突