如何从asp.net中间件发出http请求？

using System.Net.Http;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Http;

public class MyMiddleware
{
    private readonly RequestDelegate _next;
    private readonly HttpClient _httpClient;

    public MyMiddleware(RequestDelegate next)
    {
        _next = next;
        _httpClient = new HttpClient();
    }

    public async Task Invoke(HttpContext context)
    {
        // 创建一个HTTP请求
        var request = new HttpRequestMessage(HttpMethod.Get, "https://example.com/api/data");

        // 发送HTTP请求并获取响应
        var response = await _httpClient.SendAsync(request);

        // 处理响应
        if (response.IsSuccessStatusCode)
        {
            var content = await response.Content.ReadAsStringAsync();
            // 处理响应内容
        }
        else
        {
            // 处理错误情况
        }

        // 调用下一个中间件
        await _next(context);
    }
}