HttpClient 配置
这部分是 HttpClient Factory 的内容，WebApiClientCore 完全支持 HttpClient 的各种配置。
基础配置
csharp
services.AddHttpApi<IUserApi>().ConfigureHttpClient(httpClient =>
{
httpClient.Timeout = TimeSpan.FromMinutes(1d);
httpClient.DefaultRequestVersion = HttpVersion.Version20;
httpClient.DefaultVersionPolicy = HttpVersionPolicy.RequestVersionOrLower;
});常用配置项
| 配置项 | 说明 |
|---|---|
Timeout | 请求超时时间 |
DefaultRequestVersion | 默认 HTTP 版本 |
DefaultVersionPolicy | HTTP 版本协商策略 |
BaseAddress | 基础地址（可替代 HttpHost 特性） |
DefaultRequestHeaders | 默认请求头 |
配置请求头
csharp
services.AddHttpApi<IUserApi>().ConfigureHttpClient(httpClient =>
{
httpClient.DefaultRequestHeaders.Add("X-Custom-Header", "value");
httpClient.DefaultRequestHeaders.UserAgent.ParseAdd("MyApp/1.0");
});共享 HttpClient 配置
如果多个接口需要共享相同的 HttpClient 配置（如 BaseAddress、默认请求头等），可以在注册时统一配置：
csharp
// 统一配置多个接口
services.AddHttpApi<IUserApi>().ConfigureHttpClient(httpClient =>
{
httpClient.BaseAddress = new Uri("http://api.example.com/");
httpClient.Timeout = TimeSpan.FromSeconds(30);
});
services.AddHttpApi<IOrderApi>().ConfigureHttpClient(httpClient =>
{
httpClient.BaseAddress = new Uri("http://api.example.com/");
httpClient.Timeout = TimeSpan.FromSeconds(30);
});提示：对于复杂的共享配置场景，建议封装为扩展方法或使用配置中心统一管理。
类型化 HttpClient
csharp
services.AddHttpApi<IOrderApi>().ConfigureHttpClient((sp, client) =>
{
var config = sp.GetRequiredService<IConfiguration>();
client.BaseAddress = new Uri(config["ApiSettings:OrderApi:BaseUrl"]);
});