java代码实现分卷压缩成多个文件

您可以使用 Java 中的 ZipOutputStream 类来实现分卷压缩成多个文件的功能。以下是一个示例代码，用于将一个大的文件分成多个大小相等的文件进行压缩：

import java.io.*;
import java.util.zip.*;

public class ZipSplitter {

    public static void splitAndZip(String fileName, int chunkSize) throws IOException {
        byte[] buffer = new byte[1024];

        // Create a ZipOutputStream object for the output file
        ZipOutputStream out = new ZipOutputStream(new FileOutputStream(fileName + ".zip"));

        // Read the input file and split it into chunks
        FileInputStream in = new FileInputStream(fileName);
        int partCount = 0;
        while (true) {
            // Create a new ZipEntry for the chunk
            ZipEntry entry = new ZipEntry(fileName + ".z" + partCount);
            out.putNextEntry(entry);

            // Write the chunk to the output file
            int count = in.read(buffer);
            if (count == -1) {
                break;
            }
            out.write(buffer, 0, count);

            // Close the entry
            out.closeEntry();

            // If the chunk is larger than the specified chunk size, split it into smaller chunks
            if (out.getBytesWritten() > chunkSize) {
                out.finish();
                out.close();
                out = new ZipOutputStream(new FileOutputStream(fileName + ".z" + ++partCount + ".zip"));
            }
        }

        // Close the input and output streams
        in.close();
        out.finish();
        out.close();
    }

    public static void main(String[] args) throws IOException {
        // Split and zip the file "largefile.txt" into chunks of size 1 MB
        splitAndZip("largefile.txt", 1024 * 1024);
    }
}

这段代码将输入文件 "largefile.txt" 分成大小为 1 MB 的多个文件，并将它们压缩成多个 zip 文件（例如 "largefile.txt.z0.zip"、"largefile.txt.z1.zip"、"largefile.txt.z2.zip" 等）。您可以根据需要调整文件大小和文件名的格式。