LoggingEventCompositeJsonEncoder [ignore] message field error.

[Liudapeng]

Is your feature request related to a problem? Please describe.
I can't ignore the message field with the encoder LoggingEventCompositeJsonEncoder. Is it because it is used incorrectly?

Describe the solution you'd like

Describe alternatives you've considered

Additional context

[philsttr]

Hi @Liudapeng

To ignore the message field when using LoggingEventCompositeJsonEncoder, do not configure the message json provider.

This example includes the message provider. Therefore, the message field will be written.

<encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
  <providers>
    <timestamp/>
    <version/>
    <logLevel/>
    <loggerName/>
    <message/>
    <mdc/>
    <stackTrace/>
  </providers>
</encoder>

And this example does NOT include the message provider. Therefore, the message field will NOT be written.

<encoder class="net.logstash.logback.encoder.LoggingEventCompositeJsonEncoder">
  <providers>
    <timestamp/>
    <version/>
    <logLevel/>
    <loggerName/>
    <mdc/>
    <stackTrace/>
  </providers>
</encoder>

[Liudapeng]

@philsttr Ok, got it, thank you very much