OpenAPIGenerator

基于 NSwagStudio 改写的 WebAPI 转 OpenAPI 代理生成工具，按需自定义生成调用代理方法， NSwag是一个用于.NET、TypeScript和其他平台的Swagger 2.0 API工具链，用C#编写。其中OpenAPI/Swagger规范使用JSON和JSON模式来描述RESTful web API。该项目提供了从这些Swagger自动生成客户端代码的工具并将这一代集成到现工作流中.

关于NSwag

NSwag | NJsonSchema | Apimundo | Namotion.Reflection

使用OpenAPIGenerator生成代理客户端

//----------------------
// <auto-generated>
//     Generated using the CRB.TPM.OpenAPIGenerator v1.0.0.0 
// </auto-generated>
//----------------------

using System.CodeDom.Compiler;
using System.Globalization;

[GeneratedCode("CRB.TPM", "CRB.TPM.OpenAPIGenerator v1.0.0.0")]
public partial class CommonClient
{
    private string _baseUrl = "http://localhost:6220";
    private HttpClient _httpClient;
    private System.Lazy<JsonSerializerSettings> _settings;

    public CommonClient(HttpClient httpClient)
    {
        _httpClient = httpClient;
        _settings = new System.Lazy<JsonSerializerSettings>(CreateSerializerSettings);
    }

    private JsonSerializerSettings CreateSerializerSettings()
    {
        var settings = new JsonSerializerSettings();
        UpdateJsonSerializerSettings(settings);
        return settings;
    }

    public string BaseUrl
    {
        get { return _baseUrl; }
        set { _baseUrl = value; }
    }

    protected JsonSerializerSettings JsonSerializerSettings { get { return _settings.Value; } }

    partial void UpdateJsonSerializerSettings(JsonSerializerSettings settings);

    partial void PrepareRequest(HttpClient client, HttpRequestMessage request, string url);
    partial void PrepareRequest(HttpClient client, HttpRequestMessage request, System.Text.StringBuilder urlBuilder);
    partial void ProcessResponse(HttpClient client, HttpResponseMessage response);

    /// <summary>
    /// 账户类型下拉列表
    /// </summary>
    /// <exception cref="ApiException">A server side error occurred.</exception>
    public virtual Task<ResultModel<dynamic>> AccountTypeSelectAsync()
    {
        return AccountTypeSelectAsync(System.Threading.CancellationToken.None);
    }

    protected struct ObjectResponseResult<T>
    {
        public ObjectResponseResult(T responseObject, string responseText)
        {
            this.Object = responseObject;
            this.Text = responseText;
        }

        public T Object { get; }

        public string Text { get; }
    }

    public bool ReadResponseAsString { get; set; }

    protected virtual async Task<ObjectResponseResult<T>> ReadObjectResponseAsync<T>(HttpResponseMessage response, IReadOnlyDictionary<string, IEnumerable<string>> headers, System.Threading.CancellationToken cancellationToken)
    {
        if (response == null || response.Content == null)
        {
            return new ObjectResponseResult<T>(default(T), string.Empty);
        }

        if (ReadResponseAsString)
        {
            var responseText = await response.Content.ReadAsStringAsync().ConfigureAwait(false);
            try
            {
                var typedBody = JsonConvert.DeserializeObject<T>(responseText, JsonSerializerSettings);
                return new ObjectResponseResult<T>(typedBody, responseText);
            }
            catch (JsonException exception)
            {
                var message = "Could not deserialize the response body string as " + typeof(T).FullName + ".";
                throw new ApiException(message, (int)response.StatusCode, responseText, headers, exception);
            }
        }
        else
        {
            try
            {
                using (var responseStream = await response.Content.ReadAsStreamAsync().ConfigureAwait(false))
                using (var streamReader = new System.IO.StreamReader(responseStream))
                using (var jsonTextReader = new JsonTextReader(streamReader))
                {
                    var serializer = JsonSerializer.Create(JsonSerializerSettings);
                    var typedBody = serializer.Deserialize<T>(jsonTextReader);
                    return new ObjectResponseResult<T>(typedBody, string.Empty);
                }
            }
            catch (JsonException exception)
            {
                //Could not create an instance of type CRB.TPM.Mod.Admin.IResultModel. Type is an interface or abstract class and cannot be instantiated. Path 'successful', line 1, position 14.”

                var message = "Could not deserialize the response body stream as " + typeof(T).FullName + ".";
                throw new ApiException(message, (int)response.StatusCode, string.Empty, headers, exception);
            }
        }
    }

    private string ConvertToString(object value, CultureInfo cultureInfo)
    {
        if (value == null)
        {
            return "";
        }

        if (value is System.Enum)
        {
            var name = System.Enum.GetName(value.GetType(), value);
            if (name != null)
            {
                var field = IntrospectionExtensions.GetTypeInfo(value.GetType()).GetDeclaredField(name);
                if (field != null)
                {
                    var attribute = CustomAttributeExtensions.GetCustomAttribute(field, typeof(System.Runtime.Serialization.EnumMemberAttribute))
                        as System.Runtime.Serialization.EnumMemberAttribute;
                    if (attribute != null)
                    {
                        return attribute.Value != null ? attribute.Value : name;
                    }
                }

                var converted = System.Convert.ToString(System.Convert.ChangeType(value, System.Enum.GetUnderlyingType(value.GetType()), cultureInfo));
                return converted == null ? string.Empty : converted;
            }
        }
        else if (value is bool)
        {
            return System.Convert.ToString((bool)value, cultureInfo).ToLowerInvariant();
        }
        else if (value is byte[])
        {
            return System.Convert.ToBase64String((byte[])value);
        }
        else if (value.GetType().IsArray)
        {
            var array = Enumerable.OfType<object>((System.Array)value);
            return string.Join(",", Enumerable.Select(array, o => ConvertToString(o, cultureInfo)));
        }

        var result = System.Convert.ToString(value, cultureInfo);
        return result == null ? "" : result;
    }
}

客户端调用接口

namespace OpenAPI.Tests
{
    using CRB.TPM.Mod.Admin;
    using CommonClient = CRB.TPM.Mod.Admin.CommonClient;

    public class AdminTest
    {
        protected CommonClient _commonClient;

        [SetUp]
        public void Setup()
        {
            var http = new HttpClient(new HttpClientHandler());
            http.DefaultRequestHeaders.Add("ApiKey", "8e421ff965cb4935ba56ef7833bf4750");
            _commonClient = new CommonClient(http)
            {
                ReadResponseAsString = true
            };

        }

        [Test]
        public async Task AccountClientTest()
        {
            var result = await _commonClient.AccountTypeSelectAsync();
            Assert.True(result.Successful);
        }
    }
}