NSwag 在使用 OpenApi 3.0 JSON 文件时生成多个同名函数答案

【问题标题】：NSwag generates multiple functions with the same name when using OpenApi 3.0 JSON fileNSwag 在使用 OpenApi 3.0 JSON 文件时生成多个同名函数
【发布时间】：2019-11-15 22:12:33
【问题描述】：

我正在尝试使用 NSwag CLI 在 .NET Core 和 TypeScript 中生成客户端代码：

nswag run options.nswag

这适用于各种 Swagger 2.0 JSON 文件，但会为 OpenApi 3.0 JSON 文件生成多个名称完全相同的函数。

我的 options.swag 文件包含以下 .NET 内容（TypeScript 以类似的方式生成并遇到相同的问题）：

{
  "runtime": "NetCore21",
  "defaultVariables": null,
  "documentGenerator": {
    "fromDocument": {
      "url": "https://somedomain.com/openapi.json",
      "output": null
    }
  },
  "codeGenerators": {
    "openApiToCSharpClient": {
      "clientBaseClass": null,
      "configurationClass": null,
      "generateClientClasses": true,
      "generateClientInterfaces": false,
      "injectHttpClient": true,
      "disposeHttpClient": true,
      "protectedMethods": [],
      "generateExceptionClasses": true,
      "exceptionClass": "ClientApiException",
      "wrapDtoExceptions": true,
      "useHttpClientCreationMethod": false,
      "httpClientType": "System.Net.Http.HttpClient",
      "useHttpRequestMessageCreationMethod": false,
      "useBaseUrl": true,
      "generateBaseUrlProperty": true,
      "generateSyncMethods": false,
      "exposeJsonSerializerSettings": false,
      "clientClassAccessModifier": "public",
      "typeAccessModifier": "public",
      "generateContractsOutput": false,
      "contractsNamespace": "DataLake",
      "contractsOutputFilePath": null,
      "parameterDateTimeFormat": "s",
      "generateUpdateJsonSerializerSettingsMethod": true,
      "serializeTypeInformation": false,
      "queryNullValue": "",
      "className": "{controller}Client",
      "operationGenerationMode": "MultipleClientsFromOperationId",
      "additionalNamespaceUsages": [],
      "additionalContractNamespaceUsages": [],
      "generateOptionalParameters": false,
      "generateJsonMethods": false,
      "enforceFlagEnums": false,
      "parameterArrayType": "System.Collections.Generic.IEnumerable",
      "parameterDictionaryType": "System.Collections.Generic.IDictionary",
      "responseArrayType": "System.Collections.Generic.ICollection",
      "responseDictionaryType": "System.Collections.Generic.IDictionary",
      "wrapResponses": false,
      "wrapResponseMethods": [],
      "generateResponseClasses": true,
      "responseClass": "SwaggerResponse",
      "namespace": "SwaggerApiClientGenerationToolTest",
      "requiredPropertiesMustBeDefined": true,
      "dateType": "System.DateTimeOffset",
      "jsonConverters": null,
      "anyType": "object",
      "dateTimeType": "System.DateTimeOffset",
      "timeType": "System.TimeSpan",
      "timeSpanType": "System.TimeSpan",
      "arrayType": "System.Collections.Generic.ICollection",
      "arrayInstanceType": "System.Collections.ObjectModel.Collection",
      "dictionaryType": "System.Collections.Generic.IDictionary",
      "dictionaryInstanceType": "System.Collections.Generic.Dictionary",
      "arrayBaseType": "System.Collections.ObjectModel.Collection",
      "dictionaryBaseType": "System.Collections.Generic.Dictionary",
      "classStyle": "Poco",
      "generateDefaultValues": true,
      "generateDataAnnotations": true,
      "excludedTypeNames": [],
      "excludedParameterNames": [],
      "handleReferences": false,
      "generateImmutableArrayProperties": false,
      "generateImmutableDictionaryProperties": false,
      "jsonSerializerSettingsTransformationMethod": null,
      "inlineNamedArrays": false,
      "inlineNamedDictionaries": false,
      "inlineNamedTuples": true,
      "inlineNamedAny": false,
      "generateDtoTypes": true,
      "templateDirectory": null,
      "typeNameGeneratorType": null,
      "propertyNameGeneratorType": null,
      "enumNameGeneratorType": null,
      "serviceHost": null,
      "serviceSchemes": null,
      "output": "TheClient.cs"
    }
}

有没有办法让我控制函数名称的生成，从而增加一些判别式（类似于 className，它依赖于 {controller} 令牌）？

问题：如何避免NSwag在使用OpenApi 3.0 JSON文件时生成多个同名函数？

【问题讨论】：

请同时发布您的 OpenAPI JSON 文件。
@Helen - 一旦我能够混淆它，我就会发布它。听起来很奇怪，但我无法找到执行此操作的在线工具。谢谢。

标签： openapi nswag

【解决方案1】：

如果您使用 Swashbuckle 生成 API swagger 元数据，您可以将 Route 或 HttpPost/Get/Delete 属性的 Name 属性设置为类似

Name="[Controller][Action]"

然后，如果您确保 C# 中的方法名称是唯一的，并避免在名称中使用下划线，那么您也可以获得友好的 NSwag 客户端名称。

【讨论】：

【解决方案2】：

如果没有 OpenAPI.json 文件，很难为您的案例提供答案。但是你应该可以通过改变OperationGenerationMode来实现不同的方法命名。

public enum OperationGenerationMode
{
    /// <summary>Multiple clients from the Swagger operation ID in the form '{controller}_{action}'.</summary>
    MultipleClientsFromOperationId,

    /// <summary>From path segments (operation name = last segment, client name = second to last segment).</summary>
    MultipleClientsFromPathSegments,

    /// <summary>From the first operation tag and path segments (operation name = last segment, client name = first operation tag).</summary>
    MultipleClientsFromFirstTagAndPathSegments,

    /// <summary>From the first operation tag and operation ID (operation name = operation ID, client name = first operation tag).</summary>
    MultipleClientsFromFirstTagAndOperationId,

    /// <summary>From the Swagger operation ID.</summary>
    SingleClientFromOperationId,

    /// <summary>From path segments suffixed by HTTP operation name</summary>
    SingleClientFromPathSegments,
}

https://github.com/RicoSuter/NSwag/blob/master/src/NSwag.Commands/Commands/CodeGeneration/OperationGenerationMode.cs

【讨论】：