Apache Commons Compress 实现zip文件分卷压缩代码示例

以下是使用 Apache Commons Compress 实现zip文件分卷压缩的示例代码：

import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;
import org.apache.commons.compress.archivers.zip.ZipArchiveEntry;
import org.apache.commons.compress.archivers.zip.ZipArchiveOutputStream;
import org.apache.commons.compress.utils.IOUtils;

public class ZipFileSplitter {

    public static void main(String[] args) throws IOException {
        String sourceFile = "path/to/source/file";
        String outputDir = "path/to/output/directory";
        int partSizeInBytes = 1024 * 1024; // 1MB

        splitZipFile(sourceFile, outputDir, partSizeInBytes);
    }

    public static void splitZipFile(String sourceFile, String outputDir, int partSizeInBytes)
            throws IOException {
        File inputFile = new File(sourceFile);
        long fileSize = inputFile.length();

        int partNum = (int) Math.ceil((double) fileSize / partSizeInBytes);

        try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(inputFile))) {
            for (int i = 0; i < partNum; i++) {
                String outputFilePath = outputDir + File.separator + inputFile.getName() + "." + i;
                try (ZipOutputStream zos = new ZipArchiveOutputStream(
                        new BufferedOutputStream(new FileOutputStream(outputFilePath)))) {
                    ZipArchiveEntry zipEntry = new ZipArchiveEntry(inputFile.getName());
                    zos.putArchiveEntry(zipEntry);

                    int bytesRead = 0;
                    int totalBytesRead = 0;
                    byte[] buffer = new byte[partSizeInBytes];
                    while ((bytesRead = bis.read(buffer)) != -1 && totalBytesRead < partSizeInBytes) {
                        zos.write(buffer, 0, bytesRead);
                        totalBytesRead += bytesRead;
                    }
                    zos.closeArchiveEntry();
                }
            }
        }
    }
}

该代码将文件分成指定大小的部分，并将每个部分压缩为一个 ZIP 文件。每个 ZIP 文件都包含源文件的完整副本。请注意，该代码使用 Apache Commons Compress 的 `ZipArchiveOutputStream` 类来创建压缩文件，并使用 `ZipArchiveEntry` 类来设置 ZIP 文件中的条目。