OpenApiCustomiser.kt

import io.swagger.v3.oas.models.Paths
import io.swagger.v3.oas.models.OpenAPI
import org.springdoc.core.customizers.OpenApiCustomiser
import org.springframework.context.annotation.Bean
import org.springframework.context.annotation.Configuration
import java.util.TreeMap

@Configuration
class OpenApiConfig {

    @Bean
    fun sortPathsCustomiser(): OpenApiCustomiser {
        return OpenApiCustomiser { openApi: OpenAPI ->
            val paths = openApi.paths
            if (paths != null) {
                // Use TreeMap to sort paths alphabetically
                val sortedPaths = Paths()
                TreeMap(paths).forEach { (key, value) ->
                    sortedPaths.addPathItem(key, value)
                }
                openApi.paths = sortedPaths
            }
        }
    }
}