spring: kafka: bootstrap-servers: :9092 consumer: group-id: multi auto-offset-reset: earliest value-deserializer: org.springframework.kafka.support.serializer.JsonDeserializer properties: spring.json.type.mapping: "foo:de.juplo.kafka.Foo,bar:de.juplo.kafka.Bar" spring.json.trusted.packages: "de.juplo.kafka" logging: level: root: INFO