Failure to load spring.cloud.vault.token when running with spring boot 2.3+

Describe the bug When starting up, spring throws an exception java.lang.IllegalArgumentException: Token (spring.cloud.vault.token) must not be empty. This is with a hard-coded token. I also tried setting it with a system property directly.

Debugging shows that the appropriate setter for the token field in org.springframework.cloud.vault.config.VaultProperties is never called.

The issue is present in spring boot 2.3 and 2.4. It works with spring boot 2.2.

Sample Create a simple spring boot app with spring initializr or similar with 2.3+. The exception will be thrown.

Here is my bootstrap.yaml (redacted, of course):

spring:
  application:
    name: myApp

  cloud:
    vault:
      uri: https://vault.sample.url
      authentication: token
      token: 'abcd.1234'
      kv:
        enabled: true
        application-name: myApp

[mp911de]

With Spring Cloud Vault 3.0, we’ve moved away from the bootstrap context. The bootstrap context is deprecated and requires opt-in. Please define your properties in the application.(properties|yaml) file instead.

[mp911de]

Closing due to lack of activity. If you would like us to look at this issue, please provide additional information and we will re-open the issue.