是否有一种方法显示所有枚举作为他们的字符串值在swagger而不是他们的int值?
我希望能够提交POST动作，并根据它们的字符串值放置枚举，而不必每次都查看enum。
我尝试了DescribeAllEnumsAsStrings，但服务器然后接收字符串而不是enum值，这不是我们要寻找的。
有人解决了吗?
编辑:
public class Letter
{
[Required]
public string Content {get; set;}
[Required]
[EnumDataType(typeof(Priority))]
public Priority Priority {get; set;}
}
public class LettersController : ApiController
{
[HttpPost]
public IHttpActionResult SendLetter(Letter letter)
{
// Validation not passing when using DescribeEnumsAsStrings
if (!ModelState.IsValid)
return BadRequest("Not valid")
..
}
// In the documentation for this request I want to see the string values of the enum before submitting: Low, Medium, High. Instead of 0, 1, 2
[HttpGet]
public IHttpActionResult GetByPriority (Priority priority)
{
}
}
public enum Priority
{
Low,
Medium,
High
}
这在标准的OpenAPI中是不可能的。枚举只使用它们的字符串值进行描述。
幸运的是，您可以使用客户机生成器使用的一些非标准扩展来实现这一点。
NSwag支持x-enumNames
AutoRest支持x-ms-enum。
Openapi-generator支持x-enum-varnames
其他生成器可能支持这些扩展之一或有自己的扩展。
要为NSwag生成x-enumNames，请创建以下模式过滤器:
public class EnumSchemaFilter : ISchemaFilter
{
public void Apply(OpenApiSchema schema, SchemaFilterContext context)
{
if (context.Type.IsEnum)
{
var array = new OpenApiArray();
array.AddRange(Enum.GetNames(context.Type).Select(n => new OpenApiString(n)));
// NSwag
schema.Extensions.Add("x-enumNames", array);
// Openapi-generator
schema.Extensions.Add("x-enum-varnames", array);
}
}
}
并将其注册为:
services.AddSwaggerGen(options =>
{
options.SchemaFilter<EnumSchemaFilter>();
});
ASP。NET Core 3与Microsoft JSON库(System.Text.Json)
在Startup.cs / ConfigureServices ():
services
.AddControllersWithViews(...) // or AddControllers() in a Web API
.AddJsonOptions(options =>
options.JsonSerializerOptions.Converters.Add(new JsonStringEnumConverter()));
ASP。NET Core 3和Json。NET (Newtonsoft.Json)库
安装Swashbuckle.AspNetCore.Newtonsoft包。
在Startup.cs / ConfigureServices ():
services
.AddControllersWithViews(...)
.AddNewtonsoftJson(options =>
options.SerializerSettings.Converters.Add(new StringEnumConverter()));
// order is vital, this *must* be called *after* AddNewtonsoftJson()
services.AddSwaggerGenNewtonsoftSupport();
ASP。NET Core 2
在Startup.cs / ConfigureServices ():
services
.AddMvc(...)
.AddJsonOptions(options =>
options.SerializerSettings.Converters.Add(new StringEnumConverter()));
Pre-ASP。网络核心
httpConfiguration
.EnableSwagger(c =>
{
c.DescribeAllEnumsAsStrings();
});
我已经修改了Hosam Rehani的答案，以使用可空枚举和枚举的收集。只有当属性的名称与其类型完全一致时，前面的答案才有效。下面的代码解决了所有这些问题。
它适用于。net core 3。X和swagger。
在某些情况下，不搜索enum类型两次会更有效。
class SwaggerAddEnumDescriptions : IDocumentFilter
{
public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context)
{
// add enum descriptions to result models
foreach (var property in swaggerDoc.Components.Schemas.Where(x => x.Value?.Enum?.Count > 0))
{
IList<IOpenApiAny> propertyEnums = property.Value.Enum;
if (propertyEnums != null && propertyEnums.Count > 0)
{
property.Value.Description += DescribeEnum(propertyEnums, property.Key);
}
}
// add enum descriptions to input parameters
foreach (var pathItem in swaggerDoc.Paths)
{
DescribeEnumParameters(pathItem.Value.Operations, swaggerDoc, context.ApiDescriptions, pathItem.Key);
}
}
private void DescribeEnumParameters(IDictionary<OperationType, OpenApiOperation> operations, OpenApiDocument swaggerDoc, IEnumerable<ApiDescription> apiDescriptions, string path)
{
path = path.Trim('/');
if (operations != null)
{
var pathDescriptions = apiDescriptions.Where(a => a.RelativePath == path);
foreach (var oper in operations)
{
var operationDescription = pathDescriptions.FirstOrDefault(a => a.HttpMethod.Equals(oper.Key.ToString(), StringComparison.InvariantCultureIgnoreCase));
foreach (var param in oper.Value.Parameters)
{
var parameterDescription = operationDescription.ParameterDescriptions.FirstOrDefault(a => a.Name == param.Name);
if (parameterDescription != null && TryGetEnumType(parameterDescription.Type, out Type enumType))
{
var paramEnum = swaggerDoc.Components.Schemas.FirstOrDefault(x => x.Key == enumType.Name);
if (paramEnum.Value != null)
{
param.Description += DescribeEnum(paramEnum.Value.Enum, paramEnum.Key);
}
}
}
}
}
}
bool TryGetEnumType(Type type, out Type enumType)
{
if (type.IsEnum)
{
enumType = type;
return true;
}
else if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(Nullable<>))
{
var underlyingType = Nullable.GetUnderlyingType(type);
if (underlyingType != null && underlyingType.IsEnum == true)
{
enumType = underlyingType;
return true;
}
}
else
{
Type underlyingType = GetTypeIEnumerableType(type);
if (underlyingType != null && underlyingType.IsEnum)
{
enumType = underlyingType;
return true;
}
else
{
var interfaces = type.GetInterfaces();
foreach (var interfaceType in interfaces)
{
underlyingType = GetTypeIEnumerableType(interfaceType);
if (underlyingType != null && underlyingType.IsEnum)
{
enumType = underlyingType;
return true;
}
}
}
}
enumType = null;
return false;
}
Type GetTypeIEnumerableType(Type type)
{
if (type.IsGenericType && type.GetGenericTypeDefinition() == typeof(IEnumerable<>))
{
var underlyingType = type.GetGenericArguments()[0];
if (underlyingType.IsEnum)
{
return underlyingType;
}
}
return null;
}
private Type GetEnumTypeByName(string enumTypeName)
{
return AppDomain.CurrentDomain
.GetAssemblies()
.SelectMany(x => x.GetTypes())
.FirstOrDefault(x => x.Name == enumTypeName);
}
private string DescribeEnum(IList<IOpenApiAny> enums, string proprtyTypeName)
{
List<string> enumDescriptions = new List<string>();
var enumType = GetEnumTypeByName(proprtyTypeName);
if (enumType == null)
return null;
foreach (OpenApiInteger enumOption in enums)
{
int enumInt = enumOption.Value;
enumDescriptions.Add(string.Format("{0} = {1}", enumInt, Enum.GetName(enumType, enumInt)));
}
return string.Join(", ", enumDescriptions.ToArray());
}
}
添加c.DocumentFilter< swaggeraddenumdescripts> ();在Startup.cs中配置。
为了得到Swagger和. net版本6的答案，我遇到了一些问题。x工作。我想继续为枚举使用整数值，但也要显示可能值的列表(以可读的格式)。所以这是我的修改版本(包括一些答案的部分)，也许它可以为你们节省一些时间;)
附注:还有一些改进的空间，你也应该检查方法“GetEnumTypeByName”的逻辑是否适合你。在我的情况下，我想主要更新描述仅为项目内部和唯一的枚举。
using System;
using System.Collections.Generic;
using System.Linq;
using Microsoft.OpenApi.Any;
using Microsoft.OpenApi.Models;
using Models.Api;
using Swashbuckle.AspNetCore.SwaggerGen;
/// <summary>
/// Add enum value descriptions to Swagger
/// </summary>
public class SwaggerEnumDocumentFilter : IDocumentFilter
{
public void Apply(OpenApiDocument swaggerDoc, DocumentFilterContext context)
{
// add enum descriptions to result models
foreach (var property in swaggerDoc.Components.Schemas)
{
var propertyEnums = property.Value.Enum;
if (propertyEnums is { Count: > 0 })
{
property.Value.Description += DescribeEnum(propertyEnums, property.Key);
}
}
if (swaggerDoc.Paths.Count <= 0)
{
return;
}
// add enum descriptions to input parameters
foreach (var pathItem in swaggerDoc.Paths.Values)
{
DescribeEnumParameters(pathItem.Parameters);
var affectedOperations = new List<OperationType> { OperationType.Get, OperationType.Post, OperationType.Put };
foreach (var operation in pathItem.Operations)
{
if (affectedOperations.Contains(operation.Key))
{
DescribeEnumParameters(operation.Value.Parameters);
}
}
}
}
private static void DescribeEnumParameters(IList<OpenApiParameter> parameters)
{
if (parameters == null) return;
foreach (var param in parameters)
{
if (param.Schema.Reference != null)
{
param.Description += DescribeEnum(param.Schema.Reference.Id);
}
}
}
private static Type GetEnumTypeByName(string enumTypeName)
{
if (string.IsNullOrEmpty(enumTypeName))
{
return null;
}
try
{
var projectNamespaceRoot = "MyProject.";
return AppDomain.CurrentDomain
.GetAssemblies()
.SelectMany(x => x.GetTypes())
.Single(x => x.FullName != null
&& x.FullName.StartsWith(projectNamespaceRoot)
&& x.Name == enumTypeName);
}
catch (InvalidOperationException _)
{
throw new ApiException($"SwaggerDoc: Can not find a unique Enum for specified typeName '{enumTypeName}'. Please provide a more unique enum name.");
}
}
private static string DescribeEnum(IEnumerable<IOpenApiAny> enums, string propertyTypeName)
{
var enumType = GetEnumTypeByName(propertyTypeName);
if (enumType == null)
{
return null;
}
var parsedEnums = new List<OpenApiInteger>();
foreach (var @enum in enums)
{
if (@enum is OpenApiInteger enumInt)
{
parsedEnums.Add(enumInt);
}
}
return string.Join(", ", parsedEnums.Select(x => $"{x} = {Enum.GetName(enumType, x.Value)}"));
}
}
正如其他人已经提到的，你必须在你的Swagger设置中注册这个过滤器:
services.AddSwaggerGen(options =>
{
options.SwaggerDoc("v1", new OpenApiInfo
{
// some configuration
});
options.DocumentFilter<SwaggerEnumDocumentFilter>();
});
为了生成有名称和值的枚举，可以使用此解决方案。
先决条件:
你正在使用NSwag或Openapi-generator来生成API客户端
你有一个旧的Web Api项目(pre . net Core)并使用Swashbuckle。WebApi包
SchemaFilter登记:
GlobalConfiguration.Configuration
.EnableSwagger("/swagger", c =>
{
c.SchemaFilter<EnumSchemaFilter>();
});
EnumSchemaFilter:
public class EnumSchemaFilter : ISchemaFilter
{
public void Apply(Schema schema, SchemaRegistry schemaRegistry, Type type)
{
var enumProperties = schema.properties?.Where(p => p.Value.@enum != null);
if(enumProperties != null)
{
foreach (var property in enumProperties)
{
var array = Enum.GetNames(type.GetProperty(property.Key).PropertyType).ToArray();
property.Value.vendorExtensions.Add("x-enumNames", array); // NSwag
property.Value.vendorExtensions.Add("x-enum-varnames", array); // Openapi-generator
}
}
}
}
我想在. net Core应用程序中使用rory_za的答案，但我必须对其进行一些修改才能使其工作。下面是我为。net Core设计的实现。
我还修改了它，这样它就不会假设底层类型是int，并在值之间使用了新的行，以便于阅读。
/// <summary>
/// Add enum value descriptions to Swagger
/// </summary>
public class EnumDocumentFilter : IDocumentFilter {
/// <inheritdoc />
public void Apply(SwaggerDocument swaggerDoc, DocumentFilterContext context) {
// add enum descriptions to result models
foreach (var schemaDictionaryItem in swaggerDoc.Definitions) {
var schema = schemaDictionaryItem.Value;
foreach (var propertyDictionaryItem in schema.Properties) {
var property = propertyDictionaryItem.Value;
var propertyEnums = property.Enum;
if (propertyEnums != null && propertyEnums.Count > 0) {
property.Description += DescribeEnum(propertyEnums);
}
}
}
if (swaggerDoc.Paths.Count <= 0) return;
// add enum descriptions to input parameters
foreach (var pathItem in swaggerDoc.Paths.Values) {
DescribeEnumParameters(pathItem.Parameters);
// head, patch, options, delete left out
var possibleParameterisedOperations = new List<Operation> {pathItem.Get, pathItem.Post, pathItem.Put};
possibleParameterisedOperations.FindAll(x => x != null)
.ForEach(x => DescribeEnumParameters(x.Parameters));
}
}
private static void DescribeEnumParameters(IList<IParameter> parameters) {
if (parameters == null) return;
foreach (var param in parameters) {
if (param is NonBodyParameter nbParam && nbParam.Enum?.Any() == true) {
param.Description += DescribeEnum(nbParam.Enum);
} else if (param.Extensions.ContainsKey("enum") && param.Extensions["enum"] is IList<object> paramEnums &&
paramEnums.Count > 0) {
param.Description += DescribeEnum(paramEnums);
}
}
}
private static string DescribeEnum(IEnumerable<object> enums) {
var enumDescriptions = new List<string>();
Type type = null;
foreach (var enumOption in enums) {
if (type == null) type = enumOption.GetType();
enumDescriptions.Add($"{Convert.ChangeType(enumOption, type.GetEnumUnderlyingType())} = {Enum.GetName(type, enumOption)}");
}
return $"{Environment.NewLine}{string.Join(Environment.NewLine, enumDescriptions)}";
}
}
然后将它添加到Startup.cs中的ConfigureServices方法中:
c.DocumentFilter<EnumDocumentFilter>();
