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https://issues.apache.org/jira/browse/LOG4J2-3278?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17464703#comment-17464703
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Richard Gomez commented on LOG4J2-3278:
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I believe this is because 2.17.0 limited lookups to the Java protocol.
[https://logging.apache.org/log4j/2.x/changes-report.html#a2.17.0]
> SpringLookup log4j2 2.17.0 version Invalidation
> ------------------------------------------------
>
> Key: LOG4J2-3278
> URL: https://issues.apache.org/jira/browse/LOG4J2-3278
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.17.0
> Reporter: ZhangZhichun
> Priority: Major
> Attachments: image-2021-12-23-14-20-54-699.png,
> image-2021-12-23-14-22-17-392.png, image-2021-12-23-15-04-36-171.png
>
>
> SpringLookup 2.16.0 is ok,Invalid after update to 2.17.0.
> ${spring:spring.application.name} in log could not be resolved.
> my springboot version 2.4.12
> !image-2021-12-23-14-20-54-699.png!
> !image-2021-12-23-15-04-36-171.png!
> show log result:
> !image-2021-12-23-14-22-17-392.png!
>
>
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