可能是我不使用
我正在用org.openapitools:openapi-generator-maven-plugin生成一个Scala客户端jar，以便我的齐柏林飞艇能够执行这个示例代码，
openapi-generator-maven-plugin提供的Scala生成器很少，建议选择scala-akka。
需要生成一段复杂的客户端代码:
%spark
import java.util.Map;
import fr.ecoemploi.application.etude.swagger.invoker._
import fr.ecoemploi.application.etude.swagger.model.Commune;
import fr.ecoemploi.application.etude.swagger.api.CogControllerApi;
import fr.ecoemploi.application.etude.swagger.invoker.CollectionFormats._
import fr.ecoemploi.application.etude.swagger.invoker.ApiKeyLocations._
import akka.actor.ActorSystem
import akka.stream.ActorMaterializer
import scala.concurrent.ExecutionContext.Implicits.global
import scala.concurrent.Future
import scala.util.{Failure, Success}
implicit val system = ActorSystem("system")
implicit val executionContext = system.dispatcher
implicit val materializer: ActorMaterializer = ActorMaterializer()
val apiInvoker = ApiInvoker()
val cogService = CogControllerApi("http://localhost:9090")
val request = cogService.obtenirCommunes(2022);
val response = apiInvoker.execute(request)
response.onComplete {
case Success(ApiResponse(code, content, headers)) =>
System.out.println(s"Status code: $code}")
System.out.println(s"Response headers: ${headers.mkString(", ")}")
System.out.println(s"Response body: $content")
case Failure(error @ ApiError(code, message, responseContent, cause, headers)) =>
System.err.println("Exception when calling CogControllerApi#obtenirCommunes")
System.err.println(s"Status code: $code}")
System.err.println(s"Reason: $responseContent")
System.err.println(s"Response headers: ${headers.mkString(", ")}")
error.printStackTrace();
case Failure(exception) =>
System.err.println("Exception when calling CogControllerApi#obtenirCommunes")
exception.printStackTrace();
}
最终齐柏林飞艇在下运行失败:
java.lang.NoSuchMethodError: 'scala.collection.generic.CanBuildFrom scala.collection.compat.package$.canBuildFromIterableViewMapLike()'
at fr.ecoemploi.application.etude.swagger.invoker.ApiInvoker.makeUri(ApiInvoker.scala:213)
at fr.ecoemploi.application.etude.swagger.invoker.ApiInvoker.execute(ApiInvoker.scala:226)
... 44 elided
我是如何管理事情的:
其生成的openapi.jar具有以下内容:
jar tf openapi-client-1.0.0.jar
META-INF/
META-INF/MANIFEST.MF
fr/
fr/ecoemploi/
fr/ecoemploi/application/
fr/ecoemploi/application/etude/
fr/ecoemploi/application/etude/swagger/
fr/ecoemploi/application/etude/swagger/model/
fr/ecoemploi/application/etude/swagger/api/
fr/ecoemploi/application/etude/swagger/invoker/
fr/ecoemploi/application/etude/swagger/model/Commune$.class
fr/ecoemploi/application/etude/swagger/model/Commune.class
fr/ecoemploi/application/etude/swagger/api/CogControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/ComptesCollectivitesControllerApi.class
fr/ecoemploi/application/etude/swagger/api/ComptesCollectivitesControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/EnumsSerializers$.class
fr/ecoemploi/application/etude/swagger/api/EnumsSerializers.class
fr/ecoemploi/application/etude/swagger/api/CovidControllerApi.class
fr/ecoemploi/application/etude/swagger/api/EquipementControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/CovidControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/EnumsSerializers$EnumNameSerializer.class
fr/ecoemploi/application/etude/swagger/api/IntercoControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/ActivitesControllerApi.class
fr/ecoemploi/application/etude/swagger/api/EnumsSerializers$EnumNameSerializer$$anonfun$deserialize$1.class
fr/ecoemploi/application/etude/swagger/api/ActivitesControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/AssociationsControllerApi$.class
fr/ecoemploi/application/etude/swagger/api/IntercoControllerApi.class
fr/ecoemploi/application/etude/swagger/api/EnumsSerializers$EnumNameSerializer$$anonfun$serialize$1.class
fr/ecoemploi/application/etude/swagger/api/EquipementControllerApi.class
fr/ecoemploi/application/etude/swagger/api/CogControllerApi.class
fr/ecoemploi/application/etude/swagger/api/AssociationsControllerApi.class
fr/ecoemploi/application/etude/swagger/invoker/ApiRequest$.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormat.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$LocalDateSerializer$.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$DateTimeSerializer$$anonfun$$lessinit$greater$1.class
fr/ecoemploi/application/etude/swagger/invoker/NumericValue.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyCredentials.class
fr/ecoemploi/application/etude/swagger/invoker/CustomContentTypes.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyValue.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$DateTimeSerializer$$anonfun$$lessinit$greater$1$$anonfun$apply$1.class
fr/ecoemploi/application/etude/swagger/invoker/ApiError$$anonfun$$lessinit$greater$1.class
fr/ecoemploi/application/etude/swagger/invoker/Credentials.class
fr/ecoemploi/application/etude/swagger/invoker/ParametersMap$.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats$CSV$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyCredentials$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiModel.class
fr/ecoemploi/application/etude/swagger/invoker/ApiMethods.class
fr/ecoemploi/application/etude/swagger/invoker/ParametersMap.class
fr/ecoemploi/application/etude/swagger/invoker/BasicCredentials.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$DateTimeSerializer$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiMethod.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyLocations$HEADER$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyValue$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiInvoker$$anonfun$unmarshallApiResponse$4.class
fr/ecoemploi/application/etude/swagger/invoker/ApiSettings.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyLocations$QUERY$.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats$SSV$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiInvoker$.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$LocalDateSerializer$$anonfun$$lessinit$greater$2.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$DateTimeSerializer$$anonfun$$lessinit$greater$1$$anonfun$apply$2.class
fr/ecoemploi/application/etude/swagger/invoker/ApiResponse.class
fr/ecoemploi/application/etude/swagger/invoker/ApiRequest.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyLocation.class
fr/ecoemploi/application/etude/swagger/invoker/ApiInvoker$ApiRequestImprovements.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats$PIPES$.class
fr/ecoemploi/application/etude/swagger/invoker/UnitJSONSupport.class
fr/ecoemploi/application/etude/swagger/invoker/BearerToken$.class
fr/ecoemploi/application/etude/swagger/invoker/BasicCredentials$.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$.class
fr/ecoemploi/application/etude/swagger/invoker/NumericValue$.class
fr/ecoemploi/application/etude/swagger/invoker/MergedArrayFormat.class
fr/ecoemploi/application/etude/swagger/invoker/ApiResponse$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyLocations$COOKIE$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiMethod$.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$LocalDateSerializer$$anonfun$$lessinit$greater$2$$anonfun$apply$4.class
fr/ecoemploi/application/etude/swagger/invoker/BearerToken.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyLocations.class
fr/ecoemploi/application/etude/swagger/invoker/ResponseState$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiInvoker.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats$TSV$.class
fr/ecoemploi/application/etude/swagger/invoker/ArrayValues.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats$.class
fr/ecoemploi/application/etude/swagger/invoker/ResponseState$Error$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiError$.class
fr/ecoemploi/application/etude/swagger/invoker/ParametersMap$ParametersMapImprovements.class
fr/ecoemploi/application/etude/swagger/invoker/ApiMethods$.class
fr/ecoemploi/application/etude/swagger/invoker/CollectionFormats$MULTI$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiInvoker$ApiMethodExtensions.class
fr/ecoemploi/application/etude/swagger/invoker/ApiKeyLocations$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiReturnWithHeaders.class
fr/ecoemploi/application/etude/swagger/invoker/ApiSettings$.class
fr/ecoemploi/application/etude/swagger/invoker/ResponseState.class
fr/ecoemploi/application/etude/swagger/invoker/ApiError.class
fr/ecoemploi/application/etude/swagger/invoker/ResponseState$Success$.class
fr/ecoemploi/application/etude/swagger/invoker/ApiError$$anonfun$$lessinit$greater$2.class
fr/ecoemploi/application/etude/swagger/invoker/ArrayValues$.class
fr/ecoemploi/application/etude/swagger/invoker/Serializers$LocalDateSerializer$$anonfun$$lessinit$greater$2$$anonfun$apply$3.class
reference.conf
META-INF/maven/
META-INF/maven/org.openapitools/
META-INF/maven/org.openapitools/openapi-client/
META-INF/maven/org.openapitools/openapi-client/pom.xml
META-INF/maven/org.openapitools/openapi-client/pom.properties
在编译生成的源代码时，lib文件夹包含以下内容:
akka-actor_2.12-2.6.12.jar json4s-core_2.12-3.6.7.jar scalatest-core_2.12-3.2.3.jar
akka-http_2.12-10.2.3.jar json4s-ext_2.12-3.6.7.jar scalatest-diagrams_2.12-3.2.3.jar
akka-http-core_2.12-10.2.3.jar json4s-jackson_2.12-3.6.7.jar scalatest-featurespec_2.12-3.2.3.jar
akka-http-json4s_2.12-1.27.0.jar json4s-scalap_2.12-3.6.7.jar scalatest-flatspec_2.12-3.2.3.jar
akka-parsing_2.12-10.2.3.jar junit-4-13_2.12-3.2.3.0.jar scalatest-freespec_2.12-3.2.3.jar
akka-protobuf-v3_2.12-2.6.12.jar junit-4.13.jar scalatest-funspec_2.12-3.2.3.jar
akka-stream_2.12-2.6.12.jar paranamer-2.8.jar scalatest-funsuite_2.12-3.2.3.jar
config-1.4.1.jar reactive-streams-1.0.3.jar scalatest-matchers-core_2.12-3.2.3.jar
hamcrest-core-1.3.jar scala-collection-compat_2.12-2.4.1.jar scalatest-mustmatchers_2.12-3.2.3.jar
hpack-1.0.2.jar scalactic_2.12-3.2.3.jar scalatest-propspec_2.12-3.2.3.jar
jackson-annotations-2.9.0.jar scala-java8-compat_2.12-0.8.0.jar scalatest-refspec_2.12-3.2.3.jar
jackson-core-2.9.8.jar scala-library-2.12.13.jar scalatest-shouldmatchers_2.12-3.2.3.jar
jackson-databind-2.9.8.jar scala-parser-combinators_2.12-1.1.2.jar scalatest-wordspec_2.12-3.2.3.jar
joda-convert-2.2.0.jar scala-reflect-2.12.12.jar scala-xml_2.12-1.2.0.jar
joda-time-2.10.1.jar scalatest_2.12-3.2.3.jar ssl-config-core_2.12-0.4.2.jar
json4s-ast_2.12-3.6.7.jar scalatest-compatible-3.2.3.jar
似乎在ZeppelinScala解释器的spark.jars属性中，我不仅要添加openapi-client-1.0.0.jar，还要添加列出的一些jar。
但不是所有的，当然…我已经将它们连接到齐柏林飞艇的spark.jars属性:
spark.jars /home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/openapi-client-1.0.0.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-actor_2.12-2.6.12.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-http_2.12-10.2.3.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-http-core_2.12-10.2.3.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-http-json4s_2.12-1.27.0.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-parsing_2.12-10.2.3.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-protobuf-v3_2.12-2.6.12.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/akka-stream_2.12-2.6.12.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/config-1.4.1.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/hamcrest-core-1.3.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/hpack-1.0.2.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/paranamer-2.8.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/reactive-streams-1.0.3.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/jackson-annotations-2.9.0.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/jackson-core-2.9.8.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/jackson-databind-2.9.8.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/joda-convert-2.2.0.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/joda-time-2.10.1.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/json4s-ast_2.12-3.6.7.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/json4s-core_2.12-3.6.7.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/json4s-ext_2.12-3.6.7.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/json4s-jackson_2.12-3.6.7.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/json4s-scalap_2.12-3.6.7.jar,
/home/lebihan/dev/Java/comptes-france/metier-et-gestion/dev/GenerationOpenAPI/target/generated-sources/swagger/scala/target/lib/ssl-config-core_2.12-0.4.2.jar
可能是我不使用scala-akka的客户端生成器?
或者，我是否在错误的生成方式上，并且Apache Zeppelin需要scala-akka的另一个生成器选择，以便openapi-client.jar与之一起使用?
结语
Scala是一个不兼容的jar，即使在2.12.x或2.13.x版本中间。
碰巧Spark(由Apache Zeppelin使用)使用了来自scala.collection.compat包的不兼容的Scala jar，其中一些来自com.google.protobuf，我知道了吗?
client-openapi.jar。
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<executions>
<execution>
<phase>package</phase>
<goals>
<goal>shade</goal>
</goals>
<configuration>
<transformers>
<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
<mainClass></mainClass>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
<resource>reference.conf</resource>
</transformer>
<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
</transformers>
<filters>
<filter>
<artifact>*:*</artifact>
<excludes>
<exclude>META-INF/maven/**</exclude>
<exclude>META-INF/*.SF</exclude>
<exclude>META-INF/*.DSA</exclude>
<exclude>META-INF/*.RSA</exclude>
</excludes>
</filter>
</filters>
<relocations>
<relocation>
<pattern>com</pattern>
<shadedPattern>repackaged.com.google.common</shadedPattern>
<includes>
<include>com.google.common.**</include>
</includes>
</relocation>
<relocation>
<pattern>com.google.protobuf</pattern>
<shadedPattern>com.shaded.protobuf</shadedPattern>
<includes>
<include>com.google.protobuf.**</include>
</includes>
</relocation>
<relocation>
<pattern>scala.collection.compat</pattern>
<shadedPattern>scala.shaded.compat</shadedPattern>
<includes>
<include>scala.collection.compat.**</include>
</includes>
</relocation>
<relocation>
<pattern>shapeless</pattern>
<shadedPattern>shapelessshaded</shadedPattern>
<includes>
<include>shapeless.**</include>
</includes>
</relocation>
</relocations>
</configuration>
</execution>
</executions>
</plugin>