using System;
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using System.Collections.Generic;
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using System.IO.Compression;
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using System.IO;
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using System.Linq;
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using System.Runtime.Serialization.Formatters.Binary;
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using System.Text;
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using System.Threading.Tasks;
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using System.Windows.Forms;
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using System.Collections.Concurrent;
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using MessagePack;
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using MessagePack.Resolvers;
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using System.Runtime.CompilerServices;
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using System.Runtime.Serialization;
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//using NPOI.SS.Formula.Functions;
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namespace CommonBase
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{
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public class Base64Helper
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{
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public static void SaveCompressedBase64ToFile<T>(T obj, string filePath)
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{
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// 将对象序列化为字节数组
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var formatter = new BinaryFormatter();
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using (var memoryStream = new MemoryStream())
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{
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formatter.Serialize(memoryStream, obj);
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byte[] compressedData;
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// 使用 GZip 压缩字节数组
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using (var outputStream = new MemoryStream())
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{
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using (var gzipStream = new GZipStream(outputStream, CompressionMode.Compress))
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{
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memoryStream.Position = 0;
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memoryStream.CopyTo(gzipStream);
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}
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compressedData = outputStream.ToArray();
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}
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// 将压缩后的字节数组转为 Base64 字符串
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var base64String = Convert.ToBase64String(compressedData);
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// 将 Base64 字符串写入文件
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File.WriteAllText(filePath, base64String);
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}
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}
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public static T ReadCompressedBase64FromFile<T>(string filePath)
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{
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// 从文件中读取 Base64 字符串
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var base64String = File.ReadAllText(filePath);
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// 将 Base64 字符串转为压缩后的字节数组
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byte[] compressedData = Convert.FromBase64String(base64String);
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// 使用 GZip 解压缩字节数组
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using (var inputStream = new MemoryStream(compressedData))
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using (var outputStream = new MemoryStream())
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{
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using (var gzipStream = new GZipStream(inputStream, CompressionMode.Decompress))
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{
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gzipStream.CopyTo(outputStream);
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}
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// 将解压缩后的字节数组反序列化为对象
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var formatter = new BinaryFormatter();
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outputStream.Position = 0;
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var obj = (T)formatter.Deserialize(outputStream);
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return obj;
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}
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}
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}
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}
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