[
https://issues.apache.org/jira/browse/NIFI-4962?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16397236#comment-16397236
]
ASF GitHub Bot commented on NIFI-4962:
--------------------------------------
Github user pvillard31 commented on the issue:
https://github.com/apache/nifi/pull/2538
````
[WARNING]
src/main/java/org/apache/nifi/processors/standard/FlattenJson.java:[21,8]
(imports) UnusedImports: Unused import -
com.github.wnameless.json.flattener.CharSequenceTranslatorFactory.
[WARNING]
src/main/java/org/apache/nifi/processors/standard/FlattenJson.java:[25,8]
(imports) UnusedImports: Unused import -
org.apache.commons.text.translate.CharSequenceTranslator.
[INFO]
------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO]
------------------------------------------------------------------------
[INFO] Total time: 04:39 min
[INFO] Finished at: 2018-03-13T17:43:28+01:00
[INFO]
------------------------------------------------------------------------
[ERROR] Failed to execute goal
org.apache.maven.plugins:maven-checkstyle-plugin:2.17:check (check-style) on
project nifi-standard-processors: You have 2 Checkstyle violations. -> [Help 1]
````
> FlattenJson processor add unexpected backslash after flatten
> ------------------------------------------------------------
>
> Key: NIFI-4962
> URL: https://issues.apache.org/jira/browse/NIFI-4962
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.5.0
> Reporter: Deon Huang
> Assignee: Deon Huang
> Priority: Minor
> Fix For: 1.6.0
>
> Attachments: 34BFD277-F8FA-4ACE-BE1F-536B0BD6D10A.png,
> 35E5F7FD-DD79-4556-8BF0-021EEF948520.png,
> CEECDC79-7CA2-468C-A057-7A3264EB46BB.png
>
>
> Flatten Json will unexpectedly prefix slash with a backslash.
> This cause data miss match problem after flatten when json value contains url
> or other slash character.
> Detail example are in the attachments.
>
> Input, output example
> {"col3":["http://localhost:8080/nifi31","http://localhost:8080/nifi32"]}
> after flatten-
> {"col3":["http:\/\/localhost:8080\/nifi31","http:\/\/localhost:8080\/nifi32"]}
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