We've added a new Java Vert.x Web server generator to OpenAPI Generator (https://github.com/OpenAPITools/openapi-generator). To generate server stubs for Java Vert.x-Web given an OpenAPI/Swagger specification file, please follow 3 simple steps below:<p>1. Download the Java JAR (http://central.maven.org/maven2/org/openapitools/openapi-generator-cli/4.2.0/openapi-generator-cli-4.2.0.jar)<p>2. Rename the JAR as "openapi-generator-cli.jar"<p>3. Run the following command to generate a Java Vert.x Web server stub for the Petstore API (https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/modules/openapi-generator/src/test/resources/2_0/petstore.yaml):<p>Mac/Linux:<p>$ java -jar openapi-generator-cli.jar generate -g java-vertx-web -i https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/modules/openapi-generator/src/test/resources/2_0/petstore.yaml -o /var/tmp/java-vertx/<p>Windows:<p>$ java -jar openapi-generator-cli.jar generate -g java-vertx-web -i https://raw.githubusercontent.com/OpenAPITools/openapi-generator/master/modules/openapi-generator/src/test/resources/2_0/petstore.yaml -o C:\tmp\java-vertx<p>If you've any feedback or question, please let us know via https://github.com/OpenAPITools/openapi-generator/issues/new