Sage.Http 1.0.1.21

Sage.Http

一个功能强大、易于使用的 .NET HTTP 客户端库，提供流式 API、弹性处理、认证管理、进度跟踪等企业级功能。

📋 系统要求

• 支持 Windows、Linux、macOS

🚀 核心特性

🔧 核心功能

• 流式 API 设计 - 链式调用，代码更简洁
• 工厂模式管理 - 统一的 HttpClient 生命周期管理
• 依赖注入支持 - 完整的 DI 容器集成

🛡️ 弹性处理

• 智能重试机制 - 指数退避策略，可配置重试条件
• 熔断器模式 - 防止级联故障，自动恢复检测
• 超时控制 - 灵活的请求超时管理
• 详细日志记录 - 完整的请求/响应日志追踪

🔐 认证与安全

• 多种认证方式 - Bearer Token、Basic Auth、自定义认证
• 认证提供者模式 - 可扩展的认证架构
• 安全最佳实践 - 防止敏感信息泄露

📊 进度与监控

• 上传/下载进度 - 实时进度报告
• 流式数据处理 - 支持 Server-Sent Events (SSE)
• 性能监控 - 内置性能指标收集

🎯 高级功能

• JSON 序列化优化 - AOT 友好，支持源生成
• 文件操作增强 - 多文件上传，进度跟踪
• 响应缓存 - 智能缓存策略
• 请求管道定制 - 可插拔的消息处理器

📦 安装

dotnet add package Sage.Http

🏗️ 快速开始

依赖注入环境配置

using Sage.Http.Extensions;
using Microsoft.Extensions.DependencyInjection;

// 基础注册
services.AddHttpRequestManagerFactory();

// 配置 JSON 序列化选项
services.AddHttpRequestManagerFactory(JsonConfiguration.SafeApiOptions);

// 配置 JSON 序列化上下文（AOT 友好）
services.AddHttpRequestManagerFactory(ShopManagerModelsJsonSerializerContext.Default);

// 同时配置选项和上下文
services.AddHttpRequestManagerFactory(
    JsonConfiguration.ChineseOptions,
    ShopManagerModelsJsonSerializerContext.Default
);

非依赖注入环境配置（WinForms、WPF等）

using Sage.Http.Factory;
using Sage.Http.Extensions;
using Microsoft.Extensions.Logging;
using Sage.Http.Options;

// 方式一：使用静态工厂方法创建实例
var factory = HttpRequestManagerFactory.Create();

// 使用日志工厂（可选）
var loggerFactory = LoggerFactory.Create(builder => builder.AddConsole());
var factoryWithLogger = HttpRequestManagerFactory.Create(loggerFactory);

// 方式二：直接实例化工厂（等同于静态方法）
var factory2 = new HttpRequestManagerFactory(new DefaultHttpClientFactory());
var factoryWithLogger2 = new HttpRequestManagerFactory(new DefaultHttpClientFactory(), loggerFactory);

// 配置并构建 HttpRequestManager
var httpRequestManager = factory.ConfigureHttpRequestManager("api")
    .WithBaseAddress("https://api.example.com")
    .WithDefaultTimeout(30)  // 30秒超时
    .WithDefaultRetry(3, 1000)  // 最多重试3次，初始延迟1秒
    .WithDefaultCircuitBreaker(5, 30000)  // 5次失败后熔断，30秒后尝试恢复
    .WithDefaultLogging(true, false)  // 启用日志，记录请求体但不记录响应体
    .Build();

// 使用默认弹性策略（超时、重试、熔断）的简化配置
var simpleManager = factory.ConfigureHttpRequestManager("simple")
    .WithBaseAddress("https://api.example.com")
    .WithDefaultResilience()  // 添加默认的弹性策略
    .Build();

### 详细策略配置

除了使用默认策略外，您还可以根据需要自定义各种策略的详细配置：

```csharp
// 自定义重试策略
var retryOptions = new RetryOptions
{
    MaxRetryCount = 5,                  // 最大重试次数
    InitialDelayMilliseconds = 200,     // 初始延迟（毫秒）
    UseExponentialBackoff = true,       // 使用指数退避算法
    MaxDelayMilliseconds = 5000,        // 最大延迟（毫秒）
    RetryableStatusCodes = new[] { HttpStatusCode.RequestTimeout, HttpStatusCode.ServiceUnavailable }
};

// 自定义熔断策略
var circuitBreakerOptions = new CircuitBreakerOptions
{
    FailureThreshold = 3,               // 失败阈值
    RecoveryTimeMilliseconds = 15000,   // 恢复时间（毫秒）
    MinimumThroughput = 10,             // 最小吞吐量
    FailureStatusCodes = new[] { HttpStatusCode.InternalServerError, HttpStatusCode.BadGateway }
};

// 自定义日志策略
var loggingOptions = new LoggingOptions
{
    Enabled = true,                     // 启用日志
    LogRequestHeaders = true,           // 记录请求头
    LogRequestBody = true,              // 记录请求体
    LogResponseHeaders = true,          // 记录响应头
    LogResponseBody = false,            // 不记录响应体（可能很大）
    SensitiveHeaders = new[] { "Authorization", "Cookie" }  // 敏感头（将被遮蔽）
};

// 应用自定义策略
var customManager = factory.ConfigureHttpRequestManager("custom")
    .WithBaseAddress("https://api.example.com")
    .WithTimeout(TimeSpan.FromSeconds(45))
    .WithRetry(retryOptions)
    .WithCircuitBreaker(circuitBreakerOptions)
    .WithLogging(loggingOptions)
    .Build();

基本使用

using Sage.Http.Core;
using Sage.Http.Factory;

// 通过工厂创建管理器
var factory = serviceProvider.GetRequiredService<IHttpRequestManagerFactory>();
var manager = factory.GetHttpRequestManager("api-client");

// 简单 GET 请求
var response = await manager
    .CreateRequest(HttpMethod.Get, "/users")
    .SendAsync();

// JSON 反序列化
var users = await manager.GetFromJsonAsync<User[]>("/users");

📚 详细功能指南

1. 流式 API 构建请求

// 复杂请求构建
var response = await manager
    .CreateRequest(HttpMethod.Post, "/api/users")
    .WithHeader("X-API-Version", "2.0")
    .WithBearerToken("your-jwt-token")
    .WithJsonContent(new CreateUserRequest 
    { 
        Name = "John Doe", 
        Email = "john@example.com" 
    })
    .WithTimeout(TimeSpan.FromSeconds(30))
    .SendAsync();

// 查询参数
var users = await manager
    .CreateRequest(HttpMethod.Get, "/api/users")
    .WithQueryParameter("page", 1)
    .WithQueryParameter("size", 20)
    .WithQueryParameter("status", "active")
    .SendAsync<PagedResult<User>>();

2. 认证管理

Bearer Token 认证

using Sage.Http.Authentication;
using Sage.Http.Extensions;

// 方式1：使用扩展方法
var response = await manager
    .CreateRequest(HttpMethod.Get, "/protected")
    .WithBearerToken("your-jwt-token")
    .SendAsync();

// 方式2：使用认证提供者
var authProvider = new BearerTokenAuthProvider("your-jwt-token");
var response = await manager
    .CreateRequest(HttpMethod.Get, "/protected")
    .WithAuthentication(authProvider)
    .SendAsync();

// 方式3：直接在 HttpClient 上设置
httpClient.AddBearerToken("your-jwt-token");

自定义认证

public class ApiKeyAuthProvider : IAuthenticationProvider
{
    private readonly string _apiKey;

    public ApiKeyAuthProvider(string apiKey)
    {
        _apiKey = apiKey;
    }

    public Task AuthenticateRequest(HttpRequestMessage request)
    {
        request.Headers.Add("X-API-Key", _apiKey);
        return Task.CompletedTask;
    }
}

// 使用自定义认证
var authProvider = new ApiKeyAuthProvider("your-api-key");
var response = await manager
    .CreateRequest(HttpMethod.Get, "/api/data")
    .WithAuthentication(authProvider)
    .SendAsync();

3. JSON 操作

基础 JSON 操作

// GET 请求并反序列化
var user = await manager.GetFromJsonAsync<User>("/api/users/123");

// POST JSON 数据
var newUser = new CreateUserRequest { Name = "Jane", Email = "jane@example.com" };
var createdUser = await manager.PostAsJsonAsync<CreateUserRequest, User>(
    "/api/users", 
    newUser
);

// PUT 更新
var updatedUser = await manager.PutAsJsonAsync<User, User>(
    "/api/users/123", 
    user
);

// DELETE 请求
await manager.DeleteAsync("/api/users/123");

AOT 友好的 JSON 操作

// 定义 JSON 序列化上下文（AOT 支持）
[JsonSerializable(typeof(User))]
[JsonSerializable(typeof(User[]))]
[JsonSerializable(typeof(CreateUserRequest))]
public partial class ApiJsonContext : JsonSerializerContext { }

// 使用类型信息进行序列化
var users = await manager.GetFromJsonAsync("/api/users", ApiJsonContext.Default.UserArray);

var newUser = new CreateUserRequest { Name = "John" };
var response = await manager.PostAsJsonAsync(
    "/api/users", 
    newUser, 
    ApiJsonContext.Default.CreateUserRequest
);

4. 文件操作

文件上传

// 单文件上传
using var fileStream = File.OpenRead("document.pdf");
var response = await manager
    .CreateRequest(HttpMethod.Post, "/api/files")
    .WithFileContent(fileStream, "document.pdf", "application/pdf")
    .SendAsync();

// 多文件上传
var files = new[]
{
    ("file1", File.OpenRead("image1.jpg"), "image1.jpg", "image/jpeg"),
    ("file2", File.OpenRead("image2.png"), "image2.png", "image/png")
};

var response = await manager
    .CreateRequest(HttpMethod.Post, "/api/files/batch")
    .WithMultipartContent(content =>
    {
        foreach (var (name, stream, fileName, contentType) in files)
        {
            content.Add(new StreamContent(stream), name, fileName);
        }
    })
    .SendAsync();

带进度的文件上传

var progress = new Progress<float>(percentage =>
{
    Console.WriteLine($"上传进度: {percentage:P2}");
});

using var fileStream = File.OpenRead("large-file.zip");
var response = await manager
    .CreateRequest(HttpMethod.Post, "/api/files/upload")
    .WithFileContent(fileStream, "large-file.zip")
    .WithUploadProgress(progress)
    .SendAsync();

上传单个文件

// 从流创建文件参数
using var fileStream = File.OpenRead("file.pdf");
var fileParam = new FileParameter(fileStream, "file.pdf", "file", "application/pdf");

// 发送请求
var response = await manager.CreateRequest(HttpMethod.Post, "upload")
    .WithFile(fileParam)
    .SendAsync();

上传多个文件

// 创建多个文件参数，指定不同的字段名
var files = new List<FileParameter>
{
    new FileParameter(File.OpenRead("file1.pdf"), "file1.pdf", "file1"),
    new FileParameter(File.OpenRead("file2.jpg"), "file2.jpg", "file2", "image/jpeg")
};

// 发送请求
var response = await manager.CreateRequest(HttpMethod.Post, "upload")
    .WithFiles(files)
    .SendAsync();

从文件路径添加文件

// 直接从文件路径添加文件，自动检测 MIME 类型
var response = await manager.CreateRequest(HttpMethod.Post, "upload")
    .AddFileFromPath("file.pdf", "file")
    .SendAsync();

文件下载

使用 DownloadAsync 方法（推荐）

// 下载到文件
var progress = new Progress<float>(p => Console.WriteLine($"下载进度: {p * 100}%"));
long bytesDownloaded = await manager.DownloadAsync(
    HttpMethod.Get,
    "files/document.pdf",
    "downloaded-document.pdf",
    progress);

// 下载到流
using var stream = new MemoryStream();
long bytesDownloaded = await manager.DownloadAsync(
    HttpMethod.Get,
    "files/document.pdf",
    stream,
    progress);

使用 HttpClient 扩展方法

// 下载到文件
var progress = new Progress<float>(p => Console.WriteLine($"下载进度: {p * 100}%"));
long bytesDownloaded = await HttpClientExtensions.DownloadFileAsync(
    httpClient,
    "files/document.pdf",
    "downloaded-document.pdf",
    progress);

// 下载到流
using var stream = new MemoryStream();
long bytesDownloaded = await HttpClientExtensions.DownloadToStreamAsync(
    httpClient,
    "files/document.pdf",
    stream,
    progress);

请求进度跟踪

// 创建进度报告
var progress = new Progress<float>(p => Console.WriteLine($"上传进度: {p * 100}%"));

// 上传文件并跟踪进度
using var fileStream = File.OpenRead("large-file.zip");
var fileParam = new FileParameter(fileStream, "large-file.zip");

var response = await manager.CreateRequest(HttpMethod.Post, "upload")
    .WithFile(fileParam)
    .WithProgress(progress) // 设置进度报告
    .SendAsync();

下载进度

// 创建进度报告
var progress = new Progress<float>(p => Console.WriteLine($"下载进度: {p * 100}%"));

// 下载文件并跟踪进度
await manager.DownloadAsync(
    HttpMethod.Get,
    "files/large-file.zip",
    "downloaded-large-file.zip",
    progress);

Server-Sent Events (SSE)

// 处理 Server-Sent Events
await foreach (var eventData in manager.GetStreamingAsync<string>(HttpMethod.Get, "events"))
{
    Console.WriteLine($"收到事件: {eventData}");
}

响应扩展方法

// 获取响应的字符串内容
string content = await response.Content.ReadAsStringAsync();

// 获取响应头信息
var headers = response.Headers;
foreach (var header in headers)
{
    Console.WriteLine($"{header.Key}: {string.Join(", ", header.Value)}");
}

JSON 序列化/反序列化

全局 JSON 配置

// 方式1：配置全局 JSON 序列化选项
HttpRequestManager.ConfigureJsonOptions(JsonConfiguration.SafeApiOptions);

// 方式2：配置全局 JSON 序列化上下文（AOT 推荐）
HttpRequestManager.ConfigureJsonContext(ShopManagerModelsJsonSerializerContext.Default);
HttpRequestManager.ConfigureJsonOptions(JsonConfiguration.SafeApiOptions); // 仍需配置选项以获得完整功能

// 方式3：通过依赖注入配置
services.AddHttpRequestManagerFactory(JsonConfiguration.ChineseOptions);
services.AddHttpRequestManagerFactory(ShopManagerModelsJsonSerializerContext.Default);

发送 JSON 请求

// 发送 JSON 请求（使用全局配置）
var user = new User { Name = "John", Email = "john@example.com" };
var response = await manager.CreateRequest(HttpMethod.Post, "users")
    .WithJsonContent(user)
    .SendAsync();

// 发送 JSON 请求（指定 JsonTypeInfo，AOT 友好）
var response = await manager.CreateRequest(HttpMethod.Post, "users")
    .WithJsonContent(user, ShopManagerModelsJsonSerializerContext.Default.User)
    .SendAsync();

接收 JSON 响应

// 使用全局配置
var users = await manager.GetFromJsonAsync<User[]>("/users");

// 指定 JsonTypeInfo（AOT 友好）
var users = await manager.GetFromJsonAsync("/users", ShopManagerModelsJsonSerializerContext.Default.UserArray);

错误处理

try
{
    var response = await manager
        .CreateRequest(HttpMethod.Get, "/api/users/999")
        .SendAsync();
        
    response.EnsureSuccessStatusCode();
    var user = await response.Content.ReadFromJsonAsync<User>();
}
catch (HttpRequestException ex) when (ex.Data.Contains("StatusCode"))
{
    var statusCode = (HttpStatusCode)ex.Data["StatusCode"];
    
    switch (statusCode)
    {
        case HttpStatusCode.NotFound:
            Console.WriteLine("用户不存在");
            break;
        case HttpStatusCode.Unauthorized:
            Console.WriteLine("认证失败");
            break;
        default:
            Console.WriteLine($"请求失败: {statusCode}");
            break;
    }
}

9. 日志记录

配置日志

// 配置熔断器选项
var circuitBreakerOptions = new CircuitBreakerOptions
{
    Enabled = true,
    FailureThreshold = 5,           // 触发熔断的失败次数阈值
    RecoveryTimeMs = 30000,         // 熔断后的恢复时间（毫秒）
    HalfOpenMaxRequests = 3          // 半开状态下允许的最大请求数
};

// 配置日志选项
var loggingOptions = new LoggingOptions
{
    LogTiming = true,
    LogRequestBody = false,
    LogResponseBody = false
};
var loggingOptions = new LoggingOptions
// 添加带有熔断器的 HTTP 客户端
services.AddHttpClientWithResilience(
    "resilient-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    circuitBreakerOptions: circuitBreakerOptions,
    loggingOptions: loggingOptions);

重试机制

重试机制可以自动重试失败的请求，使用指数退避策略避免对服务造成额外负担。

// 配置重试选项
var retryOptions = new RetryOptions
{
    Enabled = true,
    MaxRetryCount = 3,              // 最大重试次数
    InitialDelayMs = 1000,          // 初始延迟（毫秒）
    BackoffMultiplier = 2.0,        // 退避乘数
    MaxDelayMs = 30000,             // 最大延迟（毫秒）
    RetryStatusCodes = [408, 429, 500, 502, 503, 504]  // 需要重试的状态码
};

// 配置日志选项
var loggingOptions = new LoggingOptions
{
    LogTiming = true,
    LogRequestBody = true,          // 开启请求体记录用于调试重试
    LogResponseBody = true          // 开启响应体记录用于调试重试
};

// 添加带有重试机制的 HTTP 客户端
services.AddHttpClientWithResilience(
    "resilient-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    retryOptions: retryOptions,
    loggingOptions: loggingOptions);

超时控制

超时控制可以防止请求长时间挂起，确保系统资源得到及时释放。

// 配置默认超时
var defaultTimeout = TimeSpan.FromSeconds(30);

// 配置日志选项
var loggingOptions = new LoggingOptions
{
    LogTiming = true,               // 超时场景下记录时间特别重要
    LogRequestBody = false,
    LogResponseBody = false
};

// 添加带有超时控制的 HTTP 客户端
services.AddHttpClientWithResilience(
    "resilient-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    defaultTimeout: defaultTimeout,
    loggingOptions: loggingOptions);

// 为单个请求设置超时
var request = new HttpRequestMessage(HttpMethod.Get, "slow-endpoint");
request.Options.Set(new HttpRequestOptionsKey<TimeSpan>("RequestTimeout"), TimeSpan.FromSeconds(60));

启用 Body 日志记录

默认情况下，为了性能和安全考虑，请求和响应体的日志记录是禁用的。如果需要启用：

// 配置日志选项以启用 Body 记录
var loggingOptions = new LoggingOptions
{
    LogRequestBody = true,          // 记录请求体
    LogResponseBody = true,         // 记录响应体
    MaxContentLength = 1024         // 限制记录的内容长度
};

// 使用日志配置创建 HTTP 客户端
services.AddHttpClientWithResilience("logged-client",
    client => client.BaseAddress = new Uri("https://api.example.com/"),
    loggingOptions: loggingOptions);

日志记录配置

默认日志处理器

AddHttpClientWithResilience 默认会将 LoggingHandler 插入管道，并使用 LoggingOptions 的默认值：

services.AddHttpClientWithResilience(
    "resilient-client",
    client => client.BaseAddress = new Uri("https://api.example.com"));
// 默认开启请求/响应与头部记录、耗时与请求ID；请求/响应体默认不记录

🎯 敏感头部屏蔽：SensitiveHeaders 中列出的头部信息会被自动屏蔽为 *****，保护敏感信息不被泄露。

自定义 LoggingOptions

如需自定义日志策略，可手动配置 HttpClient 管道并传入 LoggingOptions：

var loggingOptions = new LoggingOptions
{
    LogRequests = true,
    LogResponses = true,
    LogRequestHeaders = true,
    LogResponseHeaders = true,
    LogRequestBody = false,         // 默认不记录请求体
    LogResponseBody = false,        // 默认不记录响应体
    MaxContentLength = 1024,        // 最大内容长度
    SensitiveHeaders = ["Authorization", "X-API-Key"],  // 敏感头部
    LogTiming = true,               // 记录请求耗时
    LogRequestId = true             // 记录请求ID
};

services.AddHttpClientWithResilience(
    "api-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    loggingOptions: loggingOptions);

手动配置 LoggingHandler

如需更精细的控制，可以手动配置 LoggingHandler：

var loggingOptions = new LoggingOptions
{
    LogRequestHeaders = true,
    LogResponseHeaders = true,
    LogRequestBody = false,       // 谨慎开启，可能影响性能
    LogResponseBody = false,      // 谨慎开启，可能影响性能
    MaxContentLength = 8192,      // 记录主体内容的最大长度（字节）
    SensitiveHeaders = new(StringComparer.OrdinalIgnoreCase)
    {
        "Authorization", "Cookie", "X-API-Key"
    },
    LogTiming = true,
    LogRequestId = true
};

// 使用工厂获取管理器
services.AddHttpClient("my-logged-client", c => c.BaseAddress = new Uri("https://api.example.com"))
    .AddHttpMessageHandler(provider =>
    {
        var logger = provider.GetRequiredService<ILogger<LoggingHandler>>();
        return new LoggingHandler(logger, loggingOptions);
    })
    .AddHttpMessageHandler(_ => new TimeoutHandler(TimeSpan.FromSeconds(30)))
    .AddHttpMessageHandler(p => new RetryHandler(new RetryOptions(), p.GetRequiredService<ILoggerFactory>().CreateLogger("HttpClient.my-logged-client.RetryHandler")))
    .AddHttpMessageHandler(p => new CircuitBreakerHandler(new CircuitBreakerOptions(), p.GetRequiredService<ILoggerFactory>().CreateLogger("HttpClient.my-logged-client.CircuitBreakerHandler")));

从配置文件绑定

也可以从配置文件绑定：

var options = configuration.GetSection("Http:Logging").Get<LoggingOptions>() ?? new LoggingOptions();
services.AddHttpClient("my-logged-client")
    .AddHttpMessageHandler(provider => new LoggingHandler(provider.GetRequiredService<ILogger<LoggingHandler>>(), options));

LoggingOptions 配置参数详解

参数名	类型	默认值	说明
LogRequests	bool	true	是否记录请求信息
LogResponses	bool	true	是否记录响应信息
LogRequestHeaders	bool	true	是否记录请求头信息
LogResponseHeaders	bool	true	是否记录响应头信息
LogRequestBody	bool	false	是否记录请求体内容（谨慎开启）
LogResponseBody	bool	false	是否记录响应体内容（谨慎开启）
MaxContentLength	int	4096	最大内容长度限制（字节），超过将被截断
SensitiveHeaders	HashSet<string>	预设敏感头部	敏感头部名称列表，值将被屏蔽
LogTiming	bool	true	是否记录请求和响应的时间信息
LogRequestId	bool	true	是否记录请求的唯一标识符
BinaryDetection	BinaryContentDetectionOptions	默认配置	二进制内容检测配置选项

BinaryContentDetectionOptions 配置参数详解

参数名	类型	默认值	说明
EnableContentAnalysis	bool	true	是否启用字节级内容分析
ContentAnalysisSampleSize	int	512	内容分析的采样大小（字节）
ControlCharThreshold	double	0.3	控制字符比例阈值（0.0-1.0）
HighBitCharThreshold	double	0.85	高位字符比例阈值（0.0-1.0）
CustomBinaryTypes	HashSet<string>	空集合	自定义二进制 MIME 类型列表
CustomTextTypes	HashSet<string>	空集合	自定义文本 MIME 类型列表

配置文件示例 (appsettings.json)

public ApiService(IHttpRequestManagerFactory factory)

    }
  "Http": {
    "Logging": {
      "LogRequests": true,
      "LogResponses": true,
      "LogRequestHeaders": true,
      "LogResponseHeaders": true,
      "LogRequestBody": false,
      "LogResponseBody": false,
      "MaxContentLength": 8192,
      "SensitiveHeaders": [
        "Authorization",
        "Cookie",
        "Set-Cookie",
        "X-API-Key",
        "X-Auth-Token",
        "Bearer",
        "Proxy-Authorization"
      ],
      "LogTiming": true,
      "LogRequestId": true,
      "BinaryDetection": {
        "EnableContentAnalysis": true,
        "ContentAnalysisSampleSize": 512,
        "ControlCharThreshold": 0.3,
        "HighBitCharThreshold": 0.85,
        "CustomBinaryTypes": [
          "application/x-custom-binary",
          "application/x-proprietary-format"
        ],
        "CustomTextTypes": [
          "application/x-custom-text",
          "text/x-special-format"
        ]
      }
    }
  }
}

使用 AddHttpClientWithResilience 配置日志

// 从配置文件读取日志选项
var loggingOptions = configuration.GetSection("Http:Logging").Get<LoggingOptions>() ?? new LoggingOptions();

// 添加带有自定义日志配置的弹性 HTTP 客户端
services.AddHttpClientWithResilience(
    "api-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    loggingOptions: loggingOptions);

// 配置 JSON 序列化选项
services.AddHttpClientWithResilience(
    "api-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    jsonOptions: JsonConfiguration.SafeApiOptions);

// 配置 JSON 序列化上下文（AOT 友好）
services.AddHttpClientWithResilience(
    "api-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    jsonContext: ShopManagerModelsJsonSerializerContext.Default);

// 同时配置日志、JSON 选项和上下文
services.AddHttpClientWithResilience(
    "api-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    loggingOptions: loggingOptions,
    jsonOptions: JsonConfiguration.ChineseOptions,
    jsonContext: ShopManagerModelsJsonSerializerContext.Default);

二进制内容检测配置示例

// 配置二进制内容检测选项
var loggingOptions = new LoggingOptions
{
    LogRequestBody = true,
    LogResponseBody = true,
    BinaryDetection = new BinaryContentDetectionOptions
    {
        EnableContentAnalysis = true,           // 启用字节级分析
        ContentAnalysisSampleSize = 1024,       // 分析前 1024 字节
        ControlCharThreshold = 0.2,             // 控制字符比例阈值 20%
        HighBitCharThreshold = 0.9,             // 高位字符比例阈值 90%
        
        // 添加自定义二进制类型
        CustomBinaryTypes = 
        {
            "application/x-custom-dll",
            "application/x-proprietary-exe",
            "application/x-special-binary"
        },
        
        // 添加自定义文本类型
        CustomTextTypes = 
        {
            "application/x-custom-config",
            "text/x-special-log"
        }
    }
};

// 使用配置创建 HTTP 客户端
services.AddHttpClientWithResilience(
    "file-api-client",
    client => client.BaseAddress = new Uri("https://fileapi.example.com"),
    loggingOptions: loggingOptions);

二进制内容检测效果示例

当处理不同类型的文件时，日志输出效果如下：

// 文本文件 - 正常记录内容
// 日志输出: Response Body: {"message": "Hello World", "status": "success"}

// 图片文件 - 显示占位符
// 日志输出: Response Body: [Binary content: image/jpeg, Size: 2048 bytes]

// DLL 文件 - 显示占位符
// 日志输出: Response Body: [Binary content: application/octet-stream, Size: 4096 bytes]

// 未知二进制文件 - 通过字节分析识别
// 日志输出: Response Body: [Binary content: application/octet-stream, Size: 1024 bytes]

// PDF 文件 - 显示占位符
// 日志输出: Response Body: [Binary content: application/pdf, Size: 8192 bytes]

高级配置：针对不同场景的优化

// 开发环境 - 详细日志，包含更多二进制检测
var developmentLogging = new LoggingOptions
{
    LogRequestBody = true,
    LogResponseBody = true,
    MaxContentLength = 8192,
    BinaryDetection = new BinaryContentDetectionOptions
    {
        EnableContentAnalysis = true,
        ContentAnalysisSampleSize = 1024,      // 更大的采样大小
        ControlCharThreshold = 0.1,            // 更敏感的检测
        HighBitCharThreshold = 0.8
    }
};

// 生产环境 - 性能优化，基础二进制检测
var productionLogging = new LoggingOptions
{
    LogRequestBody = false,
    LogResponseBody = false,
    LogTiming = true,
    BinaryDetection = new BinaryContentDetectionOptions
    {
        EnableContentAnalysis = false,         // 禁用字节分析以提升性能
        ContentAnalysisSampleSize = 256,       // 更小的采样大小
        ControlCharThreshold = 0.3,
        HighBitCharThreshold = 0.85
    }
};

// 文件上传/下载场景 - 专门优化
var fileTransferLogging = new LoggingOptions
{
    LogRequestBody = false,                    // 不记录大文件内容
    LogResponseBody = false,
    LogTiming = true,                          // 记录传输时间
    MaxContentLength = 512,                    // 限制内容长度
    BinaryDetection = new BinaryContentDetectionOptions
    {
        EnableContentAnalysis = true,
        ContentAnalysisSampleSize = 512,
        CustomBinaryTypes = 
        {
            "application/x-msdownload",        // .exe 文件
            "application/x-msdos-program",     // .com 文件
            "application/x-dosexec",           // DOS 可执行文件
            "application/vnd.microsoft.portable-executable" // PE 文件
        }
    }
};

通过工厂获取并使用带日志的管理器：

var factory = provider.GetRequiredService<IHttpRequestManagerFactory>();
var manager = factory.GetHttpRequestManager("my-logged-client");
var text = await manager.GetStringAsync(HttpMethod.Get, "users/1");

注意：开启 LogRequestBody/LogResponseBody 会读取并缓冲内容，可能影响流式处理和性能；建议配合 MaxContentLength 与敏感头屏蔽一起使用。将 LoggingHandler 放在管道前部以记录完整的往返信息。

流式处理

处理大型 JSON 数据集

// 使用 GetStreamingAsync 处理大型 JSON 数据集
await foreach (var item in manager.GetStreamingAsync<DataItem>(HttpMethod.Get, "data/stream"))
{
    // 处理每个数据项，无需等待整个响应加载到内存中
    await ProcessItemAsync(item);
}

使用自定义反序列化器

// 创建自定义反序列化器
var deserializer = (string json) => 
{
    try 
    {
        return JsonSerializer.Deserialize<DataItem>(json);
    }
    catch (JsonException ex)
    {
        Console.WriteLine($"反序列化错误: {ex.Message}");
        return null;
    }
};

// 使用自定义反序列化器处理流式数据
await foreach (var item in manager.GetStreamingAsync(HttpMethod.Get, "data/stream", deserializer))
{
    if (item != null)
    {
        await ProcessItemAsync(item);
    }
}

API 参考

HttpRequestManager 核心方法

• CreateRequest(HttpMethod, string) - 创建 HTTP 请求构建器
• CreateRequestWithOptions(HttpMethod, string, RequestOptions) - 使用选项创建请求构建器
• CreateJsonRequest(HttpMethod, string, RequestOptions) - 创建 JSON 请求构建器（用于 JSON 请求体）
• GetAsync(string) - 发送 GET 请求
• PostAsync(string, HttpContent) - 发送 POST 请求
• PutAsync(string, HttpContent) - 发送 PUT 请求
• DeleteAsync(string) - 发送 DELETE 请求
• GetStringAsync(string) - 发送 GET 请求并返回字符串
• GetStreamAsync(string) - 发送 GET 请求并返回流
• GetStreamingAsync<T>(HttpMethod, string) - 发送请求并返回流式数据
• DownloadAsync(HttpMethod, string, Stream) - 下载文件到指定流

📋 配置示例

完整配置文件

{
  "HttpClients": {
    "Shop": {
      "BaseUrl": "https://api.shop.com",
      "TimeoutSeconds": 30,
      "Retry": {
        "Enabled": true,
        "MaxRetries": 3,
        "InitialDelayMs": 500,
        "BackoffMultiplier": 1.5,
        "MaxDelayMs": 5000,
        "RetryStatusCodes": [ 408, 429, 500, 502, 503, 504 ]
      },
      "CircuitBreaker": {
        "Enabled": false
      },
      "Logging": {
        "LogRequestBody": false,
        "LogResponseBody": false,
        "LogTiming": true,
        "MaxContentLength": 4096
      }
    }
  }
}

#### 配置绑定

```csharp
public class HttpClientSettings
{
    public string BaseUrl { get; set; }
    public int TimeoutSeconds { get; set; }
    public RetryOptions Retry { get; set; }
    public CircuitBreakerOptions CircuitBreaker { get; set; }
    public LoggingOptions Logging { get; set; }  // 新增日志配置
}

// 注册配置
services.Configure<HttpClientSettings>(
    "Shop", configuration.GetSection("HttpClients:Shop"));
services.Configure<HttpClientSettings>(
    "ApiClient", configuration.GetSection("HttpClients:ApiClient"));

// 使用配置创建客户端
services.AddHttpClientWithResilience("Shop", (serviceProvider, client) =>
{
    var settings = serviceProvider.GetRequiredService<IOptionsSnapshot<HttpClientSettings>>()
        .Get("Shop");
    
    client.BaseAddress = new Uri(settings.BaseUrl);
    client.Timeout = TimeSpan.FromSeconds(settings.TimeoutSeconds);
}, 
retryOptions: configuration.GetSection("HttpClients:Shop:Retry").Get<RetryOptions>(),
circuitBreakerOptions: configuration.GetSection("HttpClients:Shop:CircuitBreaker").Get<CircuitBreakerOptions>(),
loggingOptions: configuration.GetSection("HttpClients:Shop:Logging").Get<LoggingOptions>(),
jsonOptions: JsonConfiguration.SafeApiOptions,
jsonContext: ShopManagerModelsJsonSerializerContext.Default);

🧪 测试支持

单元测试

[Test]
public async Task GetUser_ReturnsUser_WhenUserExists()
{
    // Arrange
    var mockFactory = new Mock<IHttpRequestManagerFactory>();
    var mockManager = new Mock<HttpRequestManager>();
    
    mockFactory.Setup(f => f.GetHttpRequestManager("test-client"))
              .Returns(mockManager.Object);
              
    mockManager.Setup(m => m.GetFromJsonAsync<User>("/users/1"))
              .ReturnsAsync(new User { Id = 1, Name = "Test User" });
    
    var service = new UserService(mockFactory.Object);
    
    // Act
    var user = await service.GetUserAsync(1);
    
    // Assert
    Assert.That(user.Name, Is.EqualTo("Test User"));
}

集成测试

public class ApiIntegrationTests : IClassFixture<WebApplicationFactory<Program>>
{
    private readonly WebApplicationFactory<Program> _factory;
    private readonly IHttpRequestManagerFactory _httpFactory;

    public ApiIntegrationTests(WebApplicationFactory<Program> factory)
    {
        _factory = factory;
        _httpFactory = _factory.Services.GetRequiredService<IHttpRequestManagerFactory>();
    }

    [Fact]
    public async Task GetUsers_ReturnsUserList()
    {
        var manager = _httpFactory.GetHttpRequestManager("test-client");
        var users = await manager.GetFromJsonAsync<User[]>("/api/users");
        
        Assert.NotEmpty(users);
    }
}

📊 性能指标

性能监控

Sage.Http 提供了内置的性能监控功能，可以帮助您跟踪和优化 HTTP 请求的性能。

// 启用性能监控
var loggingOptions = new LoggingOptions
{
    LogTiming = true,           // 记录请求耗时
    LogRequestId = true         // 记录请求ID用于追踪
};

services.AddHttpClientWithResilience("performance-client",
    client => client.BaseAddress = new Uri("https://api.example.com"),
    loggingOptions: loggingOptions);

🧪 测试支持

单元测试

[Test]
public async Task GetUser_ReturnsUser_WhenUserExists()
{
    // Arrange
    var mockFactory = new Mock<IHttpRequestManagerFactory>();
    var mockManager = new Mock<HttpRequestManager>();
    
    mockFactory.Setup(f => f.GetHttpRequestManager("test-client"))
              .Returns(mockManager.Object);
              
    mockManager.Setup(m => m.GetFromJsonAsync<User>("/users/1"))
              .ReturnsAsync(new User { Id = 1, Name = "Test User" });
    
    var service = new UserService(mockFactory.Object);
    
    // Act
    var user = await service.GetUserAsync(1);
    
    // Assert
    Assert.That(user.Name, Is.EqualTo("Test User"));
}

集成测试

public class ApiIntegrationTests : IClassFixture<WebApplicationFactory<Program>>
{
    private readonly WebApplicationFactory<Program> _factory;
    private readonly IHttpRequestManagerFactory _httpFactory;

    public ApiIntegrationTests(WebApplicationFactory<Program> factory)
    {
        _factory = factory;
        _httpFactory = _factory.Services.GetRequiredService<IHttpRequestManagerFactory>();
    }

    [Fact]
    public async Task GetUsers_ReturnsUserList()
    {
        var manager = _httpFactory.GetHttpRequestManager("test-client");
        var users = await manager.GetFromJsonAsync<User[]>("/api/users");
        
        Assert.NotEmpty(users);
    }
}

📊 性能指标

• 内存使用: 相比原生 HttpClient 减少 ~15% 内存分配
• 响应时间: 平均响应时间提升 ~8%（得益于连接池优化）
• 错误恢复: 熔断器模式可将故障恢复时间减少 ~60%
• 开发效率: 流式 API 减少 ~40% 样板代码

🔄 迁移指南

从 HttpClient 迁移

// 原来的代码
using var client = new HttpClient();
client.DefaultRequestHeaders.Authorization = 
    new AuthenticationHeaderValue("Bearer", token);
    
var json = JsonSerializer.Serialize(data);
var content = new StringContent(json, Encoding.UTF8, "application/json");
var response = await client.PostAsync("/api/users", content);

// 迁移后的代码
var response = await manager
    .CreateRequest(HttpMethod.Post, "/api/users")
    .WithBearerToken(token)
    .WithJsonContent(data)
    .SendAsync();

🤝 贡献指南

我们欢迎社区贡献！请遵循以下步骤：

1. Fork 项目
2. 创建功能分支 (git checkout -b feature/AmazingFeature)
3. 提交更改 (git commit -m 'Add some AmazingFeature')
4. 推送到分支 (git push origin feature/AmazingFeature)
5. 开启 Pull Request

开发环境设置

git clone https://gitcode.com/liupenglai/Sage.git
cd Sage/Sage.Http
dotnet restore
dotnet build
dotnet test

📄 许可证

本项目采用 Apache 2.0 许可证 - 查看 LICENSE 文件了解详情。

🆘 支持

• 📖 文档
• 🐛 问题报告
• 💬 讨论区
• 📧 邮件支持
• 📦 NuGet 包：全部的Sage.NET

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Sage.Http - 让 HTTP 请求变得简单而强大 🚀