java 文件压缩zip【两种方式】

一、普通方式

package com.hebta.source.code.util;

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

public class ZipUtils {

    /**
     * @param files 传入需要压缩的文件数组 例如 ["/woke/file/1.jpg", "/woke/file/2.jpg"...]
     * @return
     */
    public String createZip(String[] files) {

        String zipFileName = "zipName.zip";
        // zipName为上一步文件打包zip时传入的zipName
        File zipFile = new File("/woke/file/" + zipFileName);
        if (!zipFile.getParentFile().exists()) {
            zipFile.getParentFile().mkdirs();
        }
        if (!zipFile.exists()) {
            try {
                zipFile.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }

        zip(files, zipFile);
        return zipFileName;
    }

    /**
     *
     * @param files 需要压缩的文件 例如 ["/woke/file/1.jpg", "/woke/file/2.jpg"...]
     * @param zipFile 压缩后输出的文件
     */
    public void zip(String[] files, File zipFile) {

        FileInputStream fileInputStream = null;
        FileOutputStream fileOutputStream = null;
        ZipOutputStream zipOutputStream = null;
        BufferedInputStream bufferInputStream = null;
        try {
            // zipFileName为压缩文件的名称（xx.zip），首先在某个目录下（C:/temp/路径可以根据自己的需求进行修改）创建一个.zip结尾的文件
            fileOutputStream = new FileOutputStream(zipFile);
            zipOutputStream = new ZipOutputStream(new BufferedOutputStream(fileOutputStream));
            // 创建读写缓冲区
            byte[] bufs = new byte[1024 * 10];
            for (String file : files) {
                File voiceFile = new File(file);
                if (voiceFile.exists()) {
                    ZipEntry zipEntry;
                    // 压缩文件下的目录分级，如果不分目录可以直接用fileName.文件后缀
                    zipEntry = new ZipEntry("path/folderName/fileName." + getFileExtension(voiceFile));

                    // 创建ZIP实体，并添加进压缩包
                    zipOutputStream.putNextEntry(zipEntry);

                    // 读取待压缩的文件并写进压缩包里
                    fileInputStream = new FileInputStream(voiceFile);
                    bufferInputStream = new BufferedInputStream(fileInputStream, 1024 * 10);
                    int read = 0;
                    while ((read = bufferInputStream.read(bufs, 0, 1024 * 10)) != -1) {
                        zipOutputStream.write(bufs, 0, read);
                    }

                }

            }

        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (bufferInputStream != null) {
                    bufferInputStream.close();
                }
                if (zipOutputStream != null) {
                    zipOutputStream.close();
                }

            } catch (IOException e) {
                e.printStackTrace();
            }

        }
    }

    /**
     * 获取文件后缀名
     * @param file
     * @return
     */
    private static String getFileExtension(File file) {
        String fileName = file.getName();
        if (fileName.lastIndexOf(".") != -1 && fileName.lastIndexOf(".") != 0)
            return fileName.substring(fileName.lastIndexOf(".") + 1);
        else return " ";
    }
}

二、使用zip4j方式

引入jar：

        <dependency>
            <groupId>net.lingala.zip4j</groupId>
            <artifactId>zip4j</artifactId>
            <version>2.8.0</version>
        </dependency>

代码块：

package com.hebta.source.code.util;

import lombok.extern.slf4j.Slf4j;
import net.lingala.zip4j.ZipFile;
import net.lingala.zip4j.exception.ZipException;
import net.lingala.zip4j.model.ZipParameters;
import net.lingala.zip4j.model.enums.AesKeyStrength;
import net.lingala.zip4j.model.enums.EncryptionMethod;

import java.io.File;
import java.util.ArrayList;
import java.util.List;
@Slf4j
public class ZipUtils {

    /**
     *
     * @param files 需要压缩的文件
     * @param zipName 文件名称
     * @param pwd 密码
     * @return
     */
    public static void createZip(List<String> files, String zipName, String pwd) {

        ZipParameters zipParameters = new ZipParameters();
        zipParameters.setEncryptFiles(true);
        zipParameters.setEncryptionMethod(EncryptionMethod.AES);
        // Below line is optional. AES 256 is used by default. You can override it to use AES 128. AES 192 is supported only for extracting.
        zipParameters.setAesKeyStrength(AesKeyStrength.KEY_STRENGTH_256);
        List<File> filesToAdd = new ArrayList<>();
        for (String file : files) {
            filesToAdd.add(new File(file));
        }
//        将文件夹添加到压缩文件
//        new ZipFile("filename.zip").addFolder(new File("/users/some_user/folder_to_add"));
        ZipFile zipFile = new ZipFile(zipName, pwd.toCharArray());
        try {
            zipFile.addFiles(filesToAdd, zipParameters);
        } catch (ZipException e) {
            log.info("生成zip失败：" + e.getMessage());
            e.printStackTrace();
        }

    }

    /**
     * 压缩文件夹加密
     * @param inputFile  D:\\test  要打包的文件夹
     * @param outputFile  D:\test1.zip 生成的压缩包的名字
     * @param pwd  压缩密码
     */
    public static void zipFileWithPwd(String inputFile,String outputFile, String pwd) {
        // 生成的压缩文件
        try {
            ZipFile zipFile = new ZipFile(outputFile, pwd.toCharArray());
            ZipParameters zipParameters = new ZipParameters();
            zipParameters.setEncryptFiles(true);
            zipParameters.setEncryptionMethod(EncryptionMethod.AES);
            zipParameters.setAesKeyStrength(AesKeyStrength.KEY_STRENGTH_256);
            // 要打包的文件夹
            File currentFile = new File(inputFile);
            File[] fs = currentFile.listFiles();
            // 遍历test文件夹下所有的文件、文件夹
            for (File f : fs) {
                if (f.isDirectory()) {
                    zipFile.addFolder(f, zipParameters);
                } else {
                    zipFile.addFile(f, zipParameters);
                }
            }
        } catch (ZipException e) {
            e.printStackTrace();
        }

    }

}