spring boot + apache camel + mongodb integration issue
The problem is that RelaxedPropertyResolver has been removed in the latest release of spring-boot (2.0.0.RELEASE). However, the latest camel-spring-boot-starter module (2.20.2 when writing this) still depends on the missing RelaxedPropertyResolver.
To solve the issue until there is a new version of Camel you need to downgrade spring-boot to 1.5.10.RELEASE.