项目方案：Java zip文件流传输

概述

在Java中，使用zip文件压缩和解压缩是非常常见的操作。本方案将介绍如何将zip文件以流的形式进行传输，以确保高效的文件传输和解压缩过程。

方案步骤

1. 创建并压缩zip文件

首先，我们需要创建一个zip文件，并将要传输的文件添加到该文件中。以下是一个示例代码，演示如何创建并压缩一个zip文件：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class ZipUtils {

    public static void createZipFile(String sourceFilePath, String zipFilePath) throws Exception {
        FileOutputStream fos = new FileOutputStream(zipFilePath);
        ZipOutputStream zipOut = new ZipOutputStream(fos);

        File fileToZip = new File(sourceFilePath);
        zipFile(fileToZip, fileToZip.getName(), zipOut);

        zipOut.close();
        fos.close();
    }

    private static void zipFile(File fileToZip, String fileName, ZipOutputStream zipOut) throws Exception {
        if (fileToZip.isHidden()) {
            return;
        }
        if (fileToZip.isDirectory()) {
            File[] children = fileToZip.listFiles();
            for (File childFile : children) {
                zipFile(childFile, fileName + "/" + childFile.getName(), zipOut);
            }
            return;
        }
        FileInputStream fis = new FileInputStream(fileToZip);
        ZipEntry zipEntry = new ZipEntry(fileName);
        zipOut.putNextEntry(zipEntry);

        byte[] bytes = new byte[1024];
        int length;
        while ((length = fis.read(bytes)) >= 0) {
            zipOut.write(bytes, 0, length);
        }

        fis.close();
    }
}

2. 以流的形式传输zip文件

在发送方，我们需要将zip文件以流的形式传输给接收方。以下是一个示例代码，演示如何以流的形式发送zip文件：

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileInputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.Socket;

public class Sender {

    private static final int BUFFER_SIZE = 4096;

    public static void sendZipFile(String zipFilePath, String host, int port) throws Exception {
        Socket socket = new Socket(host, port);
        BufferedOutputStream bos = new BufferedOutputStream(socket.getOutputStream());

        FileInputStream fis = new FileInputStream(zipFilePath);
        BufferedInputStream bis = new BufferedInputStream(fis);

        byte[] buffer = new byte[BUFFER_SIZE];
        int bytesRead;
        while ((bytesRead = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, bytesRead);
        }

        bis.close();
        bos.close();
        socket.close();
    }
}

在接收方，我们需要接收来自发送方的流，并将其保存为zip文件。以下是一个示例代码，演示如何接收zip文件的流：

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.InputStream;
import java.io.OutputStream;
import java.net.ServerSocket;
import java.net.Socket;

public class Receiver {

    private static final int BUFFER_SIZE = 4096;

    public static void receiveZipFile(String saveFilePath, int port) throws Exception {
        ServerSocket serverSocket = new ServerSocket(port);
        Socket socket = serverSocket.accept();
        BufferedInputStream bis = new BufferedInputStream(socket.getInputStream());

        FileOutputStream fos = new FileOutputStream(saveFilePath);
        BufferedOutputStream bos = new BufferedOutputStream(fos);

        byte[] buffer = new byte[BUFFER_SIZE];
        int bytesRead;
        while ((bytesRead = bis.read(buffer)) != -1) {
            bos.write(buffer, 0, bytesRead);
        }

        bos.close();
        bis.close();
        serverSocket.close();
    }
}

3. 解压缩zip文件

在接收方，我们需要解压缩接收到的zip文件。以下是一个示例代码，演示如何解压缩zip文件：

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;

public class UnzipUtils {

    public static void unzipFile(String zipFilePath, String destDirectory) throws Exception {
        File destDir = new File(destDirectory);
        if (!destDir.exists()) {
            destDir.mkdir();
        }

        ZipInputStream zipIn = new ZipInputStream(new FileInputStream(zipFilePath));
        ZipEntry entry = zipIn.getNextEntry();

        while (entry != null) {
            String filePath = destDirectory + File.separator + entry.getName();
            if (!entry.isDirectory()) {
                extractFile(zipIn, filePath);
            } else {
                File dir = new File(filePath);
                dir.mkdir();
            }
            zipIn.closeEntry();