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SpringBoot將多個文件夾進行壓縮的兩種方法(瀏覽器下載和另存為)

更新時間：2024年07月26日 09:57:40 作者：一紙紅塵輕似夢

Spring Boot項目通常不會自動對文件夾進行壓縮,不過,在打包應(yīng)用時,如果你使用了Maven或Gradle這樣的構(gòu)建工具,并且配置了相應(yīng)的插件,可以在打成jar或war包的時候?qū)⒁蕾嚨膸煳募喜⒉嚎s,本文介紹了SpringBoot將多個文件夾進行壓縮的兩種方法

1、將多個文件夾壓縮成一個壓縮包（壓縮到固定目錄）

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\\新建文件夾 (8)\\1657269583419039746"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夾 (8)\\1657269583419039747"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夾 (8)\\1657269583419039748")
        );

        // 將文件列表壓縮成壓縮包
        boolean result = zipFiles(fileList, zipFilePath);

        if (result) {
            System.out.println("文件壓縮成功: " + zipFilePath);
        } else {
            System.out.println("壓縮文件失敗");
        }
    }

    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);
                    }
                }
            }
        }
    }
}

2、將多個文件夾壓縮成一個壓縮包（通過瀏覽器下載）


  List<File> fileList = Arrays.asList(
                new File("C:\\Users\\guohu\\Desktop\\新建文件夾 (8)\\1657269583419039746"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夾 (8)\\1657269583419039747"),
                new File("C:\\Users\\guohu\\Desktop\\新建文件夾 (8)\\1657269583419039748")
        );
        zipFiles(fileList, response,"學(xué)生資料");

    /**
     * 多個文件壓縮成壓縮包并下載工具類
     *
     * @param fileList
     * @param
     */
    public static void zipFiles(List<File> fileList, HttpServletResponse response, String zipFileName) {
        try {
            // 設(shè)置響應(yīng)的頭部信息
            response.setHeader("Access-Control-Expose-Headers", "Content-Disposition");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(zipFileName+".zip", "utf-8"));
            // 設(shè)置響應(yīng)內(nèi)容的類型
            response.setContentType("application/octet-stream");

            // 將壓縮文件寫入輸出流
            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);
                    }
                }
            }
        }
    }

以上就是SpringBoot將多個文件夾進行壓縮的兩種方法(瀏覽器下載和另存為)的詳細內(nèi)容，更多關(guān)于SpringBoot文件夾壓縮的資料請關(guān)注腳本之家其它相關(guān)文章！

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