.NET核心Web API从内存流返回Zip文件

using System.IO;
using System.IO.Compression;
using System.Net.Http;
using Microsoft.AspNetCore.Mvc;

[Route("api/[controller]")]
[ApiController]
public class ZipController : ControllerBase
{
    [HttpGet]
    public HttpResponseMessage GetZipFile()
    {
        // 创建一个内存流对象
        using (MemoryStream memoryStream = new MemoryStream())
        {
            // 使用ZipArchive将文件写入内存流中
            using (ZipArchive zipArchive = new ZipArchive(memoryStream, ZipArchiveMode.Create, true))
            {
                // 添加要打包的文件到ZipArchive对象中
                // 这里假设有一个名为"example.txt"的文件需要打包
                ZipArchiveEntry entry = zipArchive.CreateEntry("example.txt");
                using (StreamWriter writer = new StreamWriter(entry.Open()))
                {
                    writer.WriteLine("This is an example file.");
                }
            }

            // 将内存流的位置重置为起始位置
            memoryStream.Position = 0;

            // 创建一个HttpResponseMessage对象
            HttpResponseMessage response = new HttpResponseMessage();

            // 将内存流作为响应内容设置给HttpResponseMessage对象
            response.Content = new StreamContent(memoryStream);

            // 设置响应的Content-Type为"application/zip"
            response.Content.Headers.ContentType = new System.Net.Http.Headers.MediaTypeHeaderValue("application/zip");

            // 返回HttpResponseMessage对象
            return response;
        }
    }
}