Spring-Boot server: compilation error in generated interface (missing semicolon)

[jhberges]

Description

Using io.swagger:swagger-codegen-cli:2.4.19 with configuration:

{
  "modelPackage": "irrellevant",
  "apiPackage": "irrellevant",
  "invokerPackage": "irrellevant",
  "library": "spring-boot",
  "interfaceOnly" : true,
  "defaultInterfaces" : false,
  "dateLibrary": "java8",
  "hideGenerationTimestamp": true
}

An interface is produced that's missing the semicolon after the operation/method definition.

Sounds very similar to #8976

Swagger-codegen version

io.swagger:swagger-codegen-cli:2.4.19

Swagger declaration file content or url

swagger: '2.0'
info:
   title: minimal
basePath: /v1/minimal
parameters:
paths:
  /:
    get:
      responses:
        200:
          description: Successful
          type: string

Command line used for generation

Via https://plugins.gradle.org/plugin/org.hidetake.swagger.generator

Command line from debug output:

Starting process 'command 'C:\Program Files\Java\jdk-11.0.9\bin\java.exe''. Working directory: **** Command: C:\Program Files\Java\jdk-11.0.9\bin\java.exe -Dapis -Dmodels -Dorg.slf4j.simpleLogger.defaultLogLevel=INFO -Dfile.encoding=UTF-8 -Duser.country=US -Duser.language=en -Duser.variant -cp C:\***\.gradle\caches\modules-2\files-2.1\io.swagger\swagger-codegen-cli\2.4.19\709dba4857869f264c61f533f34f964c24ccc456\swagger-codegen-cli-2.4.19.jar io.swagger.codegen.SwaggerCodegen generate -l spring -i C:\git\****\src\main\swagger\minimal.yaml -o C:\git\****\build\generated\src\main\java -c C:\git\*****\swagger-gen-config.json

Steps to reproduce

Generate code from above YAML.

Produces the following Java code, which is missing a semicolon on the third last line (after rootGet()):

/**
 * NOTE: This class is auto generated by the swagger code generator program (2.4.19).
 * https://github.com/swagger-api/swagger-codegen
 * Do not edit the class manually.
 */
package irrelevant;

import com.fasterxml.jackson.databind.ObjectMapper;
import io.swagger.annotations.*;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.annotation.Validated;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestHeader;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RequestPart;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletRequest;
import javax.validation.Valid;
import javax.validation.constraints.*;
import java.io.IOException;
import java.util.List;
import java.util.Optional;

@Validated
@Api(value = "default", description = "the default API")
@RequestMapping(value = "/v1/minimal")
public interface DefaultApi {

    Logger log = LoggerFactory.getLogger(DefaultApi.class);

    default Optional<ObjectMapper> getObjectMapper() {
        return Optional.empty();
    }

    default Optional<HttpServletRequest> getRequest() {
        return Optional.empty();
    }

    default Optional<String> getAcceptHeader() {
        return getRequest().map(r -> r.getHeader("Accept"));
    }

    @ApiOperation(value = "", nickname = "rootGet", notes = "", tags={  })
    @ApiResponses(value = { 
        @ApiResponse(code = 200, message = "Successful") })
    @RequestMapping(value = "/",
        method = RequestMethod.GET)
    ResponseEntity<Void> rootGet()

}

Related issues/PRs

#8976

Suggest a fix/enhancement

[jhberges]

FYI: Workaround for Gradle that works for my specific case.
Might need tweaking if there's more than one operation in each XxxApi.java file.

var swaggerPojos by extra("${buildDir}/generated/src/main/java/")
//...
tasks {
    register("correctSwaggerStubs") {
        dependsOn("generateSwaggerCode")
        doLast {
            ant.withGroovyBuilder(){
                "replaceregexp"("match" to "^}$", "replace"  to ";}", "flags" to "g", "byline" to "true" ) {
                    "fileset"("dir" to swaggerPojos, "includes" to "**/*Api.java")
                } 
	    }
        }
     }
    compileJava {
        dependsOn("correctSwaggerStubs")
    }
//...
}