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https://issues.apache.org/jira/browse/CAMEL-21339?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17889103#comment-17889103
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Olivier Jacquemart commented on CAMEL-21339:
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Thanks [~davsclaus] for the quick fix (y)
> camel-rest - Client request validation and empty body
> -----------------------------------------------------
>
> Key: CAMEL-21339
> URL: https://issues.apache.org/jira/browse/CAMEL-21339
> Project: Camel
> Issue Type: Bug
> Components: came-core
> Affects Versions: 4.8.0
> Reporter: Olivier Jacquemart
> Assignee: Claus Ibsen
> Priority: Minor
> Fix For: 4.8.1, 4.9.0
>
>
> If you enable the client request validation at a global level, and have a GET
> rest endpoint, there is no need for a body validation.
> The problem is if the client sends the Content-type aplication/json. The
> Content-Type is not needed tbut I got the issue because a client sends this
> header all the time and I can't change it.
> I faced the issue while upgrading an application from 3.20.6 to 4.8.0. I
> Here are curl examples:
> {code:java}
> # succeeds
> $ curl localhost:8080/api/hello
> {"message":"hello world"}
> # fails
> $ curl -H "Content-Type: application/json" localhost:8080/api/hello
> Invalid JSon payload.{code}
>
> In the problematic case, the
> [DefaultRestClientRequestValidator|https://github.com/apache/camel/blob/main/core/camel-support/src/main/java/org/apache/camel/support/processor/DefaultRestClientRequestValidator.java]
> will try to deserialize the json against an empty string and will fail
> because it's not a valid json.
>
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