在C#中压缩JSON数据可以使用GZipStream类。以下是一个示例代码:
using System;
using System.IO;
using System.IO.Compression;
using System.Text;
public class JsonCompression
{
public static string Compress(string json)
{
byte[] buffer = Encoding.UTF8.GetBytes(json);
using (MemoryStream ms = new MemoryStream())
{
using (GZipStream zip = new GZipStream(ms, CompressionMode.Compress, true))
{
zip.Write(buffer, 0, buffer.Length);
}
ms.Position = 0;
byte[] compressed = new byte[ms.Length];
ms.Read(compressed, 0, compressed.Length);
byte[] gzBuffer = new byte[compressed.Length + 4];
System.Buffer.BlockCopy(compressed, 0, gzBuffer, 4, compressed.Length);
System.Buffer.BlockCopy(BitConverter.GetBytes(buffer.Length), 0, gzBuffer, 0, 4);
return Convert.ToBase64String(gzBuffer);
}
}
public static string Decompress(string compressedJson)
{
byte[] gzBuffer = Convert.FromBase64String(compressedJson);
using (MemoryStream ms = new MemoryStream())
{
int msgLength = BitConverter.ToInt32(gzBuffer, 0);
ms.Write(gzBuffer, 4, gzBuffer.Length - 4);
byte[] buffer = new byte[msgLength];
ms.Position = 0;
using (GZipStream zip = new GZipStream(ms, CompressionMode.Decompress))
{
zip.Read(buffer, 0, buffer.Length);
}
return Encoding.UTF8.GetString(buffer);
}
}
}
使用示例:
string json = "{\"name\": \"John\", \"age\": 30}";
string compressedJson = JsonCompression.Compress(json);
string decompressedJson = JsonCompression.Decompress(compressedJson);
Console.WriteLine($"Original JSON: {json}");
Console.WriteLine($"Compressed JSON: {compressedJson}");
Console.WriteLine($"Decompressed JSON: {decompressedJson}");
在上面的示例中,Compress方法将JSON数据压缩成Base64字符串,而Decompress方法将压缩后的Base64字符串解压缩为原始JSON数据。