Encounter classdefnotfound error for reactivetransactionmanager class after upgrading spring-fox swagger to Open-api doc

Question

I am trying to upgrade from swagger spring-fox to open-api in a spring-boot application and I am encountering below error.

caused by java.lang.noclassdeffounderror org/springframework/transaction/reactivetransactionmanager. I tried adding implementation 'org.springframework:spring-tx:5.2.4.RELEASE' in gradle but after adding that I see Caused by: java.lang.ClassNotFoundException: org.springframework.jdbc.support.JdbcTransactionManager which did not solve by adding implementation 'org.springframework:spring-jdbc:5.2.4.RELEASE'. Can someone suggest on how we can resolve this? I am using folowwing versions

implementation "org.springframework.boot:spring-boot:2.1.9.RELEASE" implementation "org.springframework.boot:spring-boot-starter-web:2.1.9.RELEASE" implementation "org.springframework.boot:spring-boot-starter-actuator:2.1.9.RELEASE" implementation 'org.springdoc:springdoc-openapi-ui:1.6.14' implementation "org.springframework.boot:spring-boot-starter-jdbc:2.2.5.RELEASE" implementation 'org.springframework:spring-tx:5.2.4.RELEASE' implementation 'org.springframework:spring-jdbc:5.2.4.RELEASE'

Answer 1

Goodnight friend,

• according to the documentation, https://springdoc.org/#what-is-the-compatibility-matrix-of-springdoc-openapi-with-spring-boot , springdoc-openapi-ui should be compatible with Spring Boot 2.6.x.
• however, it loads spring-boot 2.7.0, overwrites the version specified in the project and makes it incompatible with many other spring dependencies still in 2.6.x versions
• this causes exceptions like the one below at startup: