C#WebAPI如何處理數據壓縮解壓

在C# Web API中處理數據壓縮和解壓，可以使用.NET內置的System.IO.Compression命名空間中的GzipStream類。下面是一個簡單的示例，展示了如何在Web API中實現數據的壓縮和解壓。

1. 首先，確保在項目中引用了System.IO.Compression命名空間。

2. 創建一個GzipCompressor類，用于處理數據的壓縮和解壓：

using System.IO;
using System.IO.Compression;
using System.Threading.Tasks;

public class GzipCompressor
{
    public static async Task<byte[]> CompressAsync(byte[] data)
    {
        using (var memoryStream = new MemoryStream())
        {
            using (var gzipStream = new GZipStream(memoryStream, CompressionMode.Compress))
            {
                gzipStream.Write(data, 0, data.Length);
            }

            return memoryStream.ToArray();
        }
    }

    public static async Task<byte[]> DecompressAsync(byte[] compressedData)
    {
        using (var memoryStream = new MemoryStream(compressedData))
        {
            using (var gzipStream = new GZipStream(memoryStream, CompressionMode.Decompress))
            {
                using (var memoryStreamForDecompressedData = new MemoryStream())
                {
                    gzipStream.CopyTo(memoryStreamForDecompressedData);
                    return memoryStreamForDecompressedData.ToArray();
                }
            }
        }
    }
}

3. 在Web API控制器中，使用GzipCompressor類處理數據的壓縮和解壓：

using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;

[ApiController]
[Route("api/[controller]")]
public class DataController : ControllerBase
{
    [HttpPost("compress")]
    public async Task<IActionResult> Compress([FromBody] byte[] data)
    {
        var compressedData = await GzipCompressor.CompressAsync(data);
        return Ok(compressedData);
    }

    [HttpPost("decompress")]
    public async Task<IActionResult> Decompress([FromBody] byte[] compressedData)
    {
        var decompressedData = await GzipCompressor.DecompressAsync(compressedData);
        return Ok(decompressedData);
    }
}

現在，當客戶端向/api/data/compress發送POST請求時，數據將被壓縮并作為響應返回。當客戶端向/api/data/decompress發送POST請求時，壓縮的數據將被解壓并作為響應返回。