How to mask sensitive values (e.g., passwords, API keys) in structured logs in Spring Boot 3.4?

[mehrdadbozorgmehr]

I’m using Spring Boot 3.4 with structured logging (via JsonWriterStructuredLogFormatter), and I want to mask sensitive data such as passwords, API keys, and tokens from the message field in the logs.

What I've tried: I'm using the default structured logging setup. logstash format

I created a StructuredLoggingJsonMembersCustomizer and modified the message field by applying regex masking. but I can't change or override the content value of "message" key

[wilkinsona]

Please don't cross-post between Stack Overflow and the issue tracker as it risks wasting the time of people trying to help in one place without realising you've already got some help in another.

[mehrdadbozorgmehr]

Please don't cross-post between Stack Overflow and the issue tracker as it risks wasting the time of people trying to help in one place without realising you've already got some help in another.

But This is a issue of spring