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c#调用java 如何处理数据解压缩

小樊
81
2024-11-29 13:00:51
栏目: 编程语言

在C#中调用Java程序并处理数据解压缩,你可以使用以下步骤:

  1. 首先,确保你的Java程序已经实现了数据压缩和解压缩的功能。这里我们使用Java的DeflaterInflater类来实现压缩和解压缩。

  2. 在C#中,你可以使用Process类来启动Java程序并传递参数。为了处理解压缩后的数据,你需要在Java程序中将解压缩后的数据写入到一个文件中,然后在C#程序中读取这个文件。

下面是一个简单的示例:

Java程序(Compressor.java):

import java.io.*;

public class Compressor {
    public static void main(String[] args) {
        try {
            // 压缩数据
            byte[] inputData = "Hello, World!".getBytes();
            Deflater deflater = new Deflater();
            deflater.setInput(inputData);
            deflater.finish();

            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            byte[] buffer = new byte[1024];
            while (!deflater.finished()) {
                int compressedDataLength = deflater.deflate(buffer);
                outputStream.write(buffer, 0, compressedDataLength);
            }
            deflater.end();

            // 将压缩后的数据写入文件
            File outputFile = new File("compressed_data.bin");
            FileOutputStream fileOutputStream = new FileOutputStream(outputFile);
            fileOutputStream.write(outputStream.toByteArray());
            fileOutputStream.close();

            System.out.println("Data compressed and saved to " + outputFile.getAbsolutePath());
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

C#程序(Program.cs):

using System;
using System.Diagnostics;
using System.IO;

class Program
{
    static void Main()
    {
        // 启动Java程序并传递参数
        ProcessStartInfo startInfo = new ProcessStartInfo
        {
            FileName = "java",
            Arguments = "-cp . Compressor",
            RedirectStandardOutput = true,
            UseShellExecute = false,
            CreateNoWindow = true
        };

        using (Process process = new Process { StartInfo = startInfo })
        {
            process.Start();
            process.WaitForExit();
        }

        // 读取解压缩后的数据
        string compressedFilePath = "compressed_data.bin";
        string decompressedFilePath = "decompressed_data.txt";

        using (FileStream compressedFileStream = new FileStream(compressedFilePath, FileMode.Open))
        {
            using (FileStream decompressedFileStream = new FileStream(decompressedFilePath, FileMode.Create))
            {
                byte[] buffer = new byte[1024];
                int bytesRead;
                while ((bytesRead = compressedFileStream.Read(buffer, 0, buffer.Length)) > 0)
                {
                    // 解压缩数据
                    Inflater inflater = new Inflater();
                    inflater.SetInput(buffer, 0, bytesRead);
                    byte[] decompressedData = new byte[1024];
                    int decompressedDataLength;
                    while (!inflater.finished())
                    {
                        decompressedDataLength = inflater.inflate(decompressedData);
                        decompressedFileStream.Write(decompressedData, 0, decompressedDataLength);
                    }
                    inflater.end();
                }
            }
        }

        Console.WriteLine("Data decompressed and saved to " + decompressedFilePath);
    }
}

在这个示例中,Java程序将字符串"Hello, World!"压缩并保存到compressed_data.bin文件中。C#程序启动Java程序,读取压缩后的数据,并使用Inflater类将其解压缩,然后将解压缩后的数据保存到decompressed_data.txt文件中。

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