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.net core 中 WebApiClientCore的使用示例代碼

瀏覽：192日期：2022-06-09 09:02:59

WebApiClient

接口注冊與選項(xiàng)

1 配置文件中配置HttpApiOptions選項(xiàng)

配置示例

 "IUserApi": {
    "HttpHost": "http://www.webappiclient.com/",
    "UseParameterPropertyValidate": false,
    "UseReturnValuePropertyValidate": false,
    "JsonSerializeOptions": {
      "IgnoreNullValues": true,
      "WriteIndented": false
    }
  }

2 Service注冊

示例

services
    .ConfigureHttpApi<IUserApi>(Configuration.GetSection(nameof(IUserApi)))
    .ConfigureHttpApi<IUserApi>(o =>
    {
// 符合國情的不標(biāo)準(zhǔn)時(shí)間格式，有些接口就是這么要求必須不標(biāo)準(zhǔn)
o.JsonSerializeOptions.Converters.Add(new JsonDateTimeConverter("yyyy-MM-dd HH:mm:ss"));
    });

HttpApiOptions詳細(xì)展示

/// <summary>
/// 表示HttpApi選項(xiàng)
/// </summary>
public class HttpApiOptions
{
    /// <summary>
    /// 獲取或設(shè)置Http服務(wù)完整主機(jī)域名
    /// 例如http://www.abc.com/或http://www.abc.com/path/
    /// 設(shè)置了HttpHost值，HttpHostAttribute將失效
    /// </summary>
    public Uri? HttpHost { get; set; }

    /// <summary>
    /// 獲取或設(shè)置是否使用的日志功能
    /// </summary>
    public bool UseLogging { get; set; } = true;

    /// <summary>
    /// 獲取或設(shè)置請求頭是否包含默認(rèn)的UserAgent
    /// </summary>
    public bool UseDefaultUserAgent { get; set; } = true;

    /// <summary>
    /// 獲取或設(shè)置是否對參數(shù)的屬性值進(jìn)行輸入有效性驗(yàn)證
    /// </summary>
    public bool . { get; set; } = true;

    /// <summary>
    /// 獲取或設(shè)置是否對返回值的屬性值進(jìn)行輸入有效性驗(yàn)證
    /// </summary>
    public bool UseReturnValuePropertyValidate { get; set; } = true;



    /// <summary>
    /// 獲取json序列化選項(xiàng)
    /// </summary>
    public JsonSerializerOptions JsonSerializeOptions { get; } = CreateJsonSerializeOptions();

    /// <summary>
    /// 獲取json反序列化選項(xiàng)
    /// </summary>
    public JsonSerializerOptions JsonDeserializeOptions { get; } = CreateJsonDeserializeOptions();

    /// <summary>
    /// xml序列化選項(xiàng)
    /// </summary>
    public XmlWriterSettings XmlSerializeOptions { get; } = new XmlWriterSettings();

    /// <summary>
    /// xml反序列化選項(xiàng)
    /// </summary>
    public XmlReaderSettings XmlDeserializeOptions { get; } = new XmlReaderSettings();

    /// <summary>
    /// 獲取keyValue序列化選項(xiàng)
    /// </summary>
    public KeyValueSerializerOptions KeyValueSerializeOptions { get; } = new KeyValueSerializerOptions();

    /// <summary>
    /// 獲取自定義數(shù)據(jù)存儲(chǔ)的字典
    /// </summary>
    public Dictionary<object, object> Properties { get; } = new Dictionary<object, object>();

    /// <summary>
    /// 獲取接口的全局過濾器集合
    /// </summary>
    public IList<IApiFilter> GlobalFilters { get; } = new List<IApiFilter>();


    /// <summary>
    /// 創(chuàng)建序列化JsonSerializerOptions
    /// </summary> 
    private static JsonSerializerOptions CreateJsonSerializeOptions()
    {
return new JsonSerializerOptions
{
    PropertyNameCaseInsensitive = true,
    PropertyNamingPolicy = JsonNamingPolicy.CamelCase,
    DictionaryKeyPolicy = JsonNamingPolicy.CamelCase,
    Encoder = JavaScriptEncoder.UnsafeRelaxedJsonEscaping
};
    }

    /// <summary>
    /// 創(chuàng)建反序列化JsonSerializerOptions
    /// </summary>
    /// <returns></returns>
    private static JsonSerializerOptions CreateJsonDeserializeOptions()
    {
var options = CreateJsonSerializeOptions();
options.Converters.Add(JsonCompatibleConverter.EnumReader);
options.Converters.Add(JsonCompatibleConverter.DateTimeReader);
return options;
    }
}

Uri(url)拼接規(guī)則

所有的Uri拼接都是通過Uri(Uri baseUri, Uri relativeUri)這個(gè)構(gòu)造器生成。

帶/結(jié)尾的baseUri

http://a.com/ + b/c/d = http://a.com/b/c/d
http://a.com/path1/ + b/c/d = http://a.com/path1/b/c/d
http://a.com/path1/path2/ + b/c/d = http://a.com/path1/path2/b/c/d

不帶/結(jié)尾的baseUri

http://a.com + b/c/d = http://a.com/b/c/d
http://a.com/path1 + b/c/d = http://a.com/b/c/d
http://a.com/path1/path2 + b/c/d = http://a.com/path1/b/c/d

事實(shí)上http://a.com與http://a.com/是完全一樣的，他們的path都是/，所以才會(huì)表現(xiàn)一樣。為了避免低級錯(cuò)誤的出現(xiàn)，請使用的標(biāo)準(zhǔn)baseUri書寫方式，即使用/作為baseUri的結(jié)尾的第一種方式。

OAuths&Token

推薦使用自定義TokenProvider

 public class TestTokenProvider : TokenProvider
    {
private readonly IConfiguration _configuration;
public TestTokenProvider(IServiceProvider services,IConfiguration configuration) : base(services)
{
    _configuration = configuration;
}

protected override Task<TokenResult> RefreshTokenAsync(IServiceProvider serviceProvider, string refresh_token)
{
   return this.RefreshTokenAsync(serviceProvider, refresh_token);
}

protected override async Task<TokenResult> RequestTokenAsync(IServiceProvider serviceProvider)
{
    LoginInput login = new LoginInput();
    login.UserNameOrEmailAddress = "admin";
    login.Password = "bb123456";
    var result = await serviceProvider.GetRequiredService<ITestApi>().RequestToken(login).Retry(maxCount: 3);
    return result;
}
    }

TokenProvider的注冊

services.AddTokenProvider<ITestApi,TestTokenProvider>();

OAuthTokenHandler

可以自定義OAuthTokenHandler官方定義是屬于http消息處理器，功能與OAuthTokenAttribute一樣，除此之外，如果因?yàn)橐馔獾脑驅(qū)е路?wù)器仍然返回未授權(quán)(401狀態(tài)碼)，其還會(huì)丟棄舊token，申請新token來重試一次請求。

OAuthToken在webapiclient中一般是保存在http請求的Header的Authrization

當(dāng)token在url中時(shí)我們需要自定義OAuthTokenHandler

class UriQueryOAuthTokenHandler : OAuthTokenHandler
{
    /// <summary>
    /// token應(yīng)用的http消息處理程序
    /// </summary>
    /// <param name="tokenProvider">token提供者</param> 
    public UriQueryOAuthTokenHandler(ITokenProvider tokenProvider)
: base(tokenProvider)
    {
    }

    /// <summary>
    /// 應(yīng)用token
    /// </summary>
    /// <param name="request"></param>
    /// <param name="tokenResult"></param>
    protected override void UseTokenResult(HttpRequestMessage request, TokenResult tokenResult)
    {
// var builder = new UriBuilder(request.RequestUri);
// builder.Query += "mytoken=" + Uri.EscapeDataString(tokenResult.Access_token);
// request.RequestUri = builder.Uri;

var uriValue = new UriValue(request.RequestUri).AddQuery("myToken", tokenResult.Access_token);
request.RequestUri = uriValue.ToUri();
    }
}

AddQuery是請求的的url中攜帶token的key

自定義OAuthTokenHandler的使用

services
    .AddHttpApi<IUserApi>()
    .AddOAuthTokenHandler((s, tp) => new UriQueryOAuthTokenHandler(tp));
//自定義TokoenProvider使用自定義OAuthTokenHandler
 apiBulider.AddOAuthTokenHandler<UrlTokenHandler>((sp,token)=>
    {
token=sp.GetRequiredService<TestTokenProvider>();
return new UrlTokenHandler(token);
    },WebApiClientCore.Extensions.OAuths.TypeMatchMode.TypeOrBaseTypes);

OAuthToken 特性

OAuthToken可以定義在繼承IHttpApi的接口上也可以定義在接口的方法上

在使用自定義TokenProvier時(shí)要注意OAuthToken特性不要定義在具有請求token的Http請求定義上

Patch請求

json patch是為客戶端能夠局部更新服務(wù)端已存在的資源而設(shè)計(jì)的一種標(biāo)準(zhǔn)交互，在RFC6902里有詳細(xì)的介紹json patch，通俗來講有以下幾個(gè)要點(diǎn)：

使用HTTP PATCH請求方法；
請求body為描述多個(gè)opration的數(shù)據(jù)json內(nèi)容；
請求的Content-Type為application/json-patch+json；

聲明Patch方法

public interface IUserApi
{
    [HttpPatch("api/users/{id}")]
    Task<UserInfo> PatchAsync(string id, JsonPatchDocument<User> doc);
}

實(shí)例化JsonPatchDocument

var doc = new JsonPatchDocument<User>();
doc.Replace(item => item.Account, "laojiu");
doc.Replace(item => item.Email, "[email protected]");

請求內(nèi)容

PATCH /api/users/id001 HTTP/1.1
Host: localhost:6000
User-Agent: WebApiClientCore/1.0.0.0
Accept: application/json; q=0.01, application/xml; q=0.01
Content-Type: application/json-patch+json

[{"op":"replace","path":"/account","value":"laojiu"},{"op":"replace","path":"/email","value":"[email protected]"}]

異常處理

try
{
    var model = await api.GetAsync();
}
catch (HttpRequestException ex) when (ex.InnerException is ApiInvalidConfigException configException)
{
    // 請求配置異常
}
catch (HttpRequestException ex) when (ex.InnerException is ApiResponseStatusException statusException)
{
    // 響應(yīng)狀態(tài)碼異常
}
catch (HttpRequestException ex) when (ex.InnerException is ApiException apiException)
{
    // 抽象的api異常
}
catch (HttpRequestException ex) when (ex.InnerException is SocketException socketException)
{
    // socket連接層異常
}
catch (HttpRequestException ex)
{
    // 請求異常
}
catch (Exception ex)
{
    // 異常
}

請求重試

使用ITask<>異步聲明，就有Retry的擴(kuò)展，Retry的條件可以為捕獲到某種Exception或響應(yīng)模型符合某種條件。

 GetNumberTemplateForEditOutput put = new GetNumberTemplateForEditOutput();
    var res = await _testApi.GetForEdit(id).Retry(maxCount: 1).WhenCatchAsync<ApiResponseStatusException>(async p =>
    {
if (p.StatusCode == HttpStatusCode.Unauthorized)
{
    await Token();//當(dāng)http請求異常時(shí)報(bào)錯(cuò),重新請求一次，保證token一直有效
}
    });
    put = res.Result;
    return put;

API接口處理

使用ITask<>異步聲明

[HttpHost("請求地址")]//請求地址域名
    public interface ITestApi : IHttpApi
    {
[OAuthToken]//權(quán)限
[JsonReturn]//設(shè)置返回格式
[HttpGet("/api/services/app/NumberingTemplate/GetForEdit")]//請求路徑
ITask<AjaxResponse<GetNumberTemplateForEditOutput>> GetForEdit([Required] string id);//請求參數(shù)聲明

[HttpPost("api/TokenAuth/Authenticate")]
ITask<string> RequestToken([JsonContent] AuthenticateModel login);
    }

基于WebApiClient的擴(kuò)展類

擴(kuò)展類聲明

/// <summary>
    /// WebApiClient擴(kuò)展類
    /// </summary>
    public static class WebApiClientExentions
    {
public static IServiceCollection AddWebApiClietHttp<THttp>(this IServiceCollection services, Action<HttpApiOptions>? options = null) where THttp : class, IHttpApi
{
    HttpApiOptions option = new HttpApiOptions();
    option.JsonSerializeOptions.Converters.Add(new JsonDateTimeConverter("yyyy-MM-dd HH:mm:ss"));
    option.UseParameterPropertyValidate = true;
    if(options != null)
    {
options.Invoke(option);
    }
    services.AddHttpApi<THttp>().ConfigureHttpApi(p => p = option);
    return services;
}

public static IServiceCollection AddWebApiClietHttp<THttp>(this IServiceCollection services,IConfiguration configuration) where THttp : class, IHttpApi
{
    services.AddHttpApi<THttp>().ConfigureHttpApi((Microsoft.Extensions.Configuration.IConfiguration)configuration);
    return services;
}

public static IServiceCollection AddWebApiClientHttpWithTokeProvider<THttp, TTokenProvider>(this IServiceCollection services, Action<HttpApiOptions>? options = null) where THttp : class, IHttpApi
    where TTokenProvider : class, ITokenProvider
{
    services.AddWebApiClietHttp<THttp>(options);
    services.AddTokenProvider<THttp,TTokenProvider>();
    return services;
}

public static IServiceCollection AddWebApiClientHttpWithTokeProvider<THttp, TTokenProvider>(this IServiceCollection services, IConfiguration configuration) where THttp : class, IHttpApi
    where TTokenProvider : class, ITokenProvider
{
    services.AddWebApiClietHttp<THttp>(configuration);
    services.AddTokenProvider<THttp, TTokenProvider>();
    return services;
}
    }

擴(kuò)展類使用

services.AddWebApiClientHttpWithTokeProvider<ITestApi, TestTokenProvider>();

到此這篇關(guān)于.net core 中 WebApiClientCore的使用示例代碼的文章就介紹到這了,更多相關(guān).net core 中 WebApiClientCore使用內(nèi)容請搜索以前的文章或繼續(xù)瀏覽下面的相關(guān)文章希望大家以后多多支持！

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