解壓縮.zip 文件而不從響應 c# 寫入光盤

Question

讓我先聲明我對處理壓縮/解壓縮/讀取/讀取文件有點陌生。 話雖如此，我正在做一個 PoC，它將通過 api 檢索數據並將響應寫入數據庫。 響應是一個 zip 文件，在這個 zip 內部是 json 數據，我將讀取和寫入數據庫。

我在解壓縮和閱讀信息時遇到了一些麻煩。 請在下面找到代碼：

HttpClient client = new HttpClient();
            HttpRequestMessage request = new HttpRequestMessage
            {
                Method = HttpMethod.Get,
                RequestUri = new Uri(baseUrl),
                Headers =
                {
                    { "X-API-TOKEN", apiKey },
                },

            };

            using (var response = await client.SendAsync(request))
            {
                response.EnsureSuccessStatusCode();
                var body = await response.Content.ReadAsStringAsync();
               // here is where I am stuck - not sure how I would unzip and read the contents
            }

謝謝

Answer 1

假設您實際上有一個.zip文件，您不需要MemoryStream ，您只需將現有的 stream 傳遞給ZipArchive

static HttpClient client = new HttpClient();  // always keep static client

async Task GetZip()
{
    using var request = new HttpRequestMessage(HttpMethod.Get, new Uri(baseUrl))
    {
        Headers = {
            { "X-API-TOKEN", apiKey },
        },
    };
    using var response = await client.SendAsync(request, HttpCompletionOption.ResponseHeadersRead);

    response.EnsureSuccessStatusCode();
    using var stream = await response.Content.ReadAsStreamAsync();
    await ProcessZip(stream);
}

async Task ProcessZip(Stream zipStream)
{
    using var zip = new ZipArchive(zipStream, ZipArchiveMode.Read);
    foreach (var file in zip.Entries)
    {
        using var entryStream = file.Open();
        await ....; // do stuff here
    }
}

Answer 2

您可以將body轉換為byte數組，然后使用MemoryStream解壓縮。

    byte[] bytes = Encoding.ASCII.GetBytes(body);
    using (var mso = new MemoryStream(bytes)) {
        using (var gs = new GZipStream(msi, CompressionMode.Decompress)) {
            CopyTo(gs, mso);
        }

        return Encoding.UTF8.GetString(mso.ToArray());
    }