通过

PollyHttpClientBuilderExtensions.AddTransientHttpErrorPolicy 方法

  • 参考

定义

命名空间:
Microsoft.Extensions.DependencyInjection
程序集:
Microsoft.Extensions.Http.Polly.dll
包:
Microsoft.Extensions.Http.Polly v9.0.0-rc.2.24474.3

添加 PolicyHttpMessageHandler，它将使用通过执行提供的配置委托创建的 Policy 将请求执行涵盖在内。 策略生成器将预先配置为针对失败的请求（带有指示暂时性故障的条件）的策略的触发器应用程序。

public:
[System::Runtime::CompilerServices::Extension]
 static Microsoft::Extensions::DependencyInjection::IHttpClientBuilder ^ AddTransientHttpErrorPolicy(Microsoft::Extensions::DependencyInjection::IHttpClientBuilder ^ builder, Func<Polly::PolicyBuilder<System::Net::Http::HttpResponseMessage ^> ^, Polly::IAsyncPolicy<System::Net::Http::HttpResponseMessage ^> ^> ^ configurePolicy);
public static Microsoft.Extensions.DependencyInjection.IHttpClientBuilder AddTransientHttpErrorPolicy (this Microsoft.Extensions.DependencyInjection.IHttpClientBuilder builder, Func<Polly.PolicyBuilder<System.Net.Http.HttpResponseMessage>,Polly.IAsyncPolicy<System.Net.Http.HttpResponseMessage>> configurePolicy);
static member AddTransientHttpErrorPolicy : Microsoft.Extensions.DependencyInjection.IHttpClientBuilder * Func<Polly.PolicyBuilder<System.Net.Http.HttpResponseMessage>, Polly.IAsyncPolicy<System.Net.Http.HttpResponseMessage>> -> Microsoft.Extensions.DependencyInjection.IHttpClientBuilder
<Extension()>
Public Function AddTransientHttpErrorPolicy (builder As IHttpClientBuilder, configurePolicy As Func(Of PolicyBuilder(Of HttpResponseMessage), IAsyncPolicy(Of HttpResponseMessage))) As IHttpClientBuilder

参数

builder
IHttpClientBuilder

IHttpClientBuilder

configurePolicy
Func<PolicyBuilder<HttpResponseMessage>,IAsyncPolicy<HttpResponseMessage>>

用于创建 IAsyncPolicy`1 的委托。

返回

IHttpClientBuilder

可用于配置客户端的 IHttpClientBuilder。

注解

有关配置策略的指导，请参阅 上的 PolicyHttpMessageHandler 说明。

PolicyBuilder`1提供给 configurePolicy 的 已预配置错误，用于处理以下类别中的错误：

  • 网络故障 (为 HttpRequestException)
  • HTTP 5XX 状态代码 (服务器错误)
  • HTTP 408 状态代码 (请求超时)

创建的 configurePolicy 策略将按命名客户端无限期缓存。 策略通常设计为作为单一实例，并可在适当时共享。 若要在多个命名客户端之间共享策略，请先创建该策略，然后根据需要将其传递给多个调用 AddPolicyHandler(IHttpClientBuilder, IAsyncPolicy<HttpResponseMessage>) 。

适用于