這個完全沒必要自己寫吧，直接用來源類庫就行了，要不讓封裝太多，有一個Flurl這個就很好用，下面是自己寫的方法。
一、WebRequest方式
引用dll
using System.IO;using System.Net;using System.Threading.Tasks;
public static string HttpPost(string url, string body){ Encoding encoding = Encoding.UTF8; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.Method = "POST"; request.Accept = "text/html, application/xhtml+xml, */*"; request.ContentType = "application/json";
byte[] buffer = encoding.GetBytes(body); request.ContentLength = buffer.Length; request.GetRequestStream().Write(buffer, 0, buffer.Length); HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)) { return reader.ReadToEnd(); }}
public static string HttpGet(string url){ Encoding encoding = Encoding.UTF8; HttpWebRequest request = (HttpWebRequest)WebRequest.Create(url); request.Method = "GET"; request.Accept = "text/html, application/xhtml+xml, */*"; request.ContentType = "application/json";
HttpWebResponse response = (HttpWebResponse)request.GetResponse(); using (StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.UTF8)) { return reader.ReadToEnd(); }}
WebRequest 核心概念與實現(xiàn)解析
WebRequest 是網(wǎng)絡(luò)編程中用于處理HTTP/HTTPS請求的核心機制，其在不同開發(fā)環(huán)境和編程語言中存在多種實現(xiàn)形式。以下是主要分類及技術(shù)要點：
WebRequest 的核心功能
?HTTP請求處理?
WebRequest 主要用于構(gòu)建HTTP請求報文（包含請求行、請求頭和請求體）?，并在服務(wù)端解析后存儲于Request對象中，便于后續(xù)參數(shù)獲取及業(yè)務(wù)處理?。同時，通過Response對象設(shè)置響應(yīng)數(shù)據(jù)，由服務(wù)器按HTTP協(xié)議格式返回客戶端?。
?請求生命周期管理?
包括建立連接、處理重定向、超時控制等。例如，C#的HttpWebRequest支持設(shè)置 AllowAutoRedirect 控制重定向，Timeout 設(shè)定超時限制?。
二、HttpClient 方式
static HttpClient client = new HttpClient();
static async Task<Uri> CreateProductAsync(Product product){ HttpResponseMessage response = await client.PostAsJsonAsync( "api/products", product); response.EnsureSuccessStatusCode();
return response.Headers.Location;}
static async Task<Product> GetProductAsync(string path){ Product product = null; HttpResponseMessage response = await client.GetAsync(path); if (response.IsSuccessStatusCode) { product = await response.Content.ReadAsAsync<Product>(); } return product;}
static async Task<Product> UpdateProductAsync(Product product){ HttpResponseMessage response = await client.PutAsJsonAsync( $"api/products/{product.Id}", product); response.EnsureSuccessStatusCode();
product = await response.Content.ReadAsAsync<Product>(); return product;}
static async Task<HttpStatusCode> DeleteProductAsync(string id){ HttpResponseMessage response = await client.DeleteAsync( $"api/products/{id}"); return response.StatusCode;}
static async Task RunAsync(){ client.BaseAddress = new Uri("http://localhost:64195/"); client.DefaultRequestHeaders.Accept.Clear(); client.DefaultRequestHeaders.Accept.Add( new MediaTypeWithQualityHeaderValue("application/json")); try { Product product = new Product { Name = "Gizmo", Price = 100, Category = "Widgets" }; var url = await CreateProductAsync(product); Console.WriteLine($"Created at {url}"); product = await GetProductAsync(url.PathAndQuery); ShowProduct(product); Console.WriteLine("Updating price..."); product.Price = 80; await UpdateProductAsync(product); product = await GetProductAsync(url.PathAndQuery); ShowProduct(product); var statusCode = await DeleteProductAsync(product.Id); Console.WriteLine($"Deleted (HTTP Status = {(int)statusCode})"); } catch (Exception e) { Console.WriteLine(e.Message); } Console.ReadLine();}
?C# HttpClient 核心功能與使用指南?
HttpClient 是 .NET 中用于發(fā)送 HTTP 請求和接收響應(yīng)的現(xiàn)代化工具，支持高性能、異步操作及靈活的配置?。以下是其關(guān)鍵特性與使用要點：
核心特性?
?異步支持?
- 所有方法均原生支持
async/await，適用于高并發(fā)場景（如微服務(wù)通信）?。 - 示例：
var response = await client.GetAsync("https://api.example.com/data");
?連接池管理?
- 每個
HttpClient 實例維護獨立的連接池，復(fù)用 TCP 連接以提升性能?。 - ?注意?：避免頻繁創(chuàng)建實例，推薦通過單例或
IHttpClientFactory 管理?。
?請求配置?
- 支持自定義請求頭、超時時間、認證方式（如 Basic、JWT、Cookie）?。
- 示例（設(shè)置請求頭）：
client.DefaultRequestHeaders.Authorization =
new AuthenticationHeaderValue("Bearer", "your_jwt_token");
?數(shù)據(jù)傳輸格式?
- 支持 JSON、表單、文件上傳等格式，需通過
StringContent、MultipartFormDataContent 等類封裝數(shù)據(jù)?。
該文章在 2025/5/14 9:18:36 編輯過
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