Springboot将多个文件夹进行压缩（浏览器下载和另存为）_springboot 多文件压缩下载

1、将多个文件夹压缩成一个压缩包（压缩到固定目录）

import java.io.*;
import java.util.List;
import java.util.zip.ZipEntry;
import java.util.zip.ZipOutputStream;

public class FileZipper {
    public static void main(String[] args) {
        // 示例使用
        String zipFilePath = "C:\\Users\\guohu\\Desktop\\archive.zip";
        List<File> fileList = List.of(
                new File("C:\\Users\\guohu\\Desktop\\新建文件夹 (8)\\1657269583419039746"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夹 (8)\\1657269583419039747"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夹 (8)\\1657269583419039748")
        );

        // 将文件列表压缩成压缩包
        boolean result = zipFiles(fileList, zipFilePath);

        if (result) {
            System.out.println("文件压缩成功: " + zipFilePath);
        } else {
            System.out.println("压缩文件失败");
        }
    }

    public static boolean zipFiles(List<File> fileList, String zipFilePath) {
        try (ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(zipFilePath))) {
            for (File file : fileList) {
                if (file.exists()) {
                    compress(file, zos, file.getName(), true);
                }
            }
            return true;
        } catch (IOException e) {
            e.printStackTrace();
            return false;
        }
    }

    private static void compress(File sourceFile, ZipOutputStream zos, String name, boolean KeepDirStructure)
            throws IOException {
        byte[] buffer = new byte[4096];
        if (sourceFile.isFile()) {
            try (FileInputStream fis = new FileInputStream(sourceFile)) {
                ZipEntry zipEntry;
                if (KeepDirStructure) {
                    zipEntry = new ZipEntry(name);
                } else {
                    zipEntry = new ZipEntry(sourceFile.getName());
                }
                zos.putNextEntry(zipEntry);
                int length;
                while ((length = fis.read(buffer)) > 0) {
                    zos.write(buffer, 0, length);
                }
                zos.closeEntry();
            }
        } else if (sourceFile.isDirectory()) {
            File[] files = sourceFile.listFiles();
            if (files != null) {
                for (File file : files) {
                    if (KeepDirStructure) {
                        compress(file, zos, name + File.separator + file.getName(), KeepDirStructure);
                    } else {
                        compress(file, zos, file.getName(), KeepDirStructure);
                    }
                }
            }
        }
    }
}
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2、将多个文件夹压缩成一个压缩包（通过浏览器下载）

  List<File> fileList = Arrays.asList(
                new File("C:\\Users\\guohu\\Desktop\\新建文件夹 (8)\\1657269583419039746"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夹 (8)\\1657269583419039747"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夹 (8)\\1657269583419039748")
        );
        zipFiles(fileList, response,"学生资料");

    /**
     * 多个文件压缩成压缩包并下载工具类
     *
     * @param fileList
     * @param
     */
    public static void zipFiles(List<File> fileList, HttpServletResponse response, String zipFileName) {
        try {
            // 设置响应的头部信息
            response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(zipFileName+".zip", "utf-8"));
            // 设置响应内容的类型
            response.setContentType("application/octet-stream");

            // 将压缩文件写入输出流
            try (ZipOutputStream zos = new ZipOutputStream(response.getOutputStream())) {
                for (File file : fileList) {
                    if (file.exists()) {
                        compress(file, zos, file.getName(), true);
                    }
                }
            }

            response.flushBuffer();
            response.getOutputStream().close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static void compress(File sourceFile, ZipOutputStream zos, String name, boolean keepDirStructure)
            throws IOException {
        byte[] buffer = new byte[4096];
        if (sourceFile.isFile()) {
            try (FileInputStream fis = new FileInputStream(sourceFile)) {
                ZipEntry zipEntry;
                if (keepDirStructure) {
                    zipEntry = new ZipEntry(name);
                } else {
                    zipEntry = new ZipEntry(sourceFile.getName());
                }
                zos.putNextEntry(zipEntry);
                int length;
                while ((length = fis.read(buffer)) > 0) {
                    zos.write(buffer, 0, length);
                }
                zos.closeEntry();
            }
        } else if (sourceFile.isDirectory()) {
            File[] files = sourceFile.listFiles();
            if (files != null) {
                for (File file : files) {
                    if (keepDirStructure) {
                        compress(file, zos, name + File.separator + file.getName(), keepDirStructure);
                    } else {
                        compress(file, zos, file.getName(), keepDirStructure);
                    }
                }
            }
        }
    }
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