java工具类文件zip压缩 base64 加密，base64解密 zip解压

分手后的思念是犯贱 2022-10-16 02:00 262阅读 0赞

**代码：**

package com.cfam.utils;
    
    import java.io.BufferedOutputStream;
    import java.io.ByteArrayInputStream;
    import java.io.ByteArrayOutputStream;
    import java.io.File;
    import java.io.FileInputStream;
    import java.io.FileOutputStream;
    import java.io.IOException;
    import java.util.ArrayList;
    import java.util.Base64;
    import java.util.List;
    import java.util.zip.ZipEntry;
    import java.util.zip.ZipInputStream;
    import java.util.zip.ZipOutputStream;
    
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    /**
     * <p>
     * Title: ZipToBase64.java<／p>
     * <p>
     * Description: 压缩 转 base64 网络传输<／p>
     * 
     * @author ken chen
     * @date 2019年7月26日
     * @param srcFiles 需要压缩的文件
     * @return Base64 压缩文件后进行base64编码
     * @version 1.0
     */
    public class ZipToBase64 {
    
        private static final int BUFFER_SIZE = 2 * 1024;
    
        private static final Logger log = LoggerFactory.getLogger(ZipToBase64.class);
    
        public static String toBase64Zip(List<File> srcFiles) throws RuntimeException {
            log.info("开始压缩文件    [{}]", srcFiles);
            long start = System.currentTimeMillis();
            String base64toZip = "";
            ZipOutputStream zos = null;
            ByteArrayOutputStream baos = new ByteArrayOutputStream();
            try {
                zos = new ZipOutputStream(baos);
                for (File srcFile : srcFiles) {
                    byte[] buf = new byte[BUFFER_SIZE];
                    log.info("压缩的文件名称    [{}]   ", srcFile.getName() + "压缩的文件大小      [{}] ", srcFile.length());
                    zos.putNextEntry(new ZipEntry(srcFile.getName()));
                    int len;
                    FileInputStream in = new FileInputStream(srcFile);
                    while ((len = in.read(buf)) != -1) {
                        zos.write(buf, 0, len);
                    }
                    zos.closeEntry();
                    in.close();
                }
                long end = System.currentTimeMillis();
                log.info("压缩完成，耗时：    [{}] ms", (end - start));
            } catch (Exception e) {
                throw new RuntimeException("zip error from ZipToBase64", e);
            } finally {
                if (zos != null) {
                    try {
                        zos.close();
                    } catch (IOException e) {
                        e.printStackTrace();
                    }
                }
            }
            
            byte[] refereeFileBase64Bytes =Base64.getEncoder().encode(baos.toByteArray());
            try {
                base64toZip = new String(refereeFileBase64Bytes, "UTF-8");
            } catch (Exception e) {
                throw new RuntimeException("压缩流出现异常", e);
            }
            return base64toZip;
        }
    
        /**
         * <p>
         * Title: ZipToBase64.java<／p>
         * <p>
         * Description: Base64 解密 zip 解压缩 <／p>
         * 
         * @author ken chen
         * @date 2019年7月26日
         * @param path   解压文件夹路径 文件夹父文件可更改
         * @param base64 base64加密字符
         * @return Base64 压缩文件后进行base64编码
         * @version 1.0
         */
        public static void Base64ToFile(String base64, String path) throws RuntimeException {
            log.info("解压文件地址" + path);
            try {
                byte[] byteBase64 =Base64.getDecoder().decode(base64);
                ByteArrayInputStream byteArray = new ByteArrayInputStream(byteBase64);
                ZipInputStream zipInput = new ZipInputStream(byteArray);
                ZipEntry entry = zipInput.getNextEntry();
                File fout = null;
                File file = new File(path);
                String parent = file.getParent();
                while (entry != null && !entry.isDirectory()) {
                    log.info("文件名称:    [{}]", entry.getName());
                    fout = new File(parent, entry.getName());
                    if (!fout.exists()) {
                        (new File(fout.getParent())).mkdirs();
                    }
                    BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(fout));
                    int offo = -1;
                    byte[] buffer = new byte[BUFFER_SIZE];
                    while ((offo = zipInput.read(buffer)) != -1) {
                        bos.write(buffer, 0, offo);
                    }
                    bos.close();
                    // 获取 下一个文件
                    entry = zipInput.getNextEntry();
                }
                zipInput.close();
                byteArray.close();
            } catch (Exception e) {
                throw new RuntimeException("解压流出现异常", e);
            }
    
        }
    
        public static void main(String[] args) {
            // 文件压缩
            List<File> fileList = new ArrayList<File>();
            fileList.add(new File("C:\\Users\\cjy\\Desktop\\qqq\\担保合同附件.pdf"));
            fileList.add(new File("C:\\Users\\cjy\\Desktop\\qqq\\融资申请表.xls"));
            fileList.add(new File("C:\\Users\\cjy\\Desktop\\qqq\\其他附件.jpg"));
            String base64 = ZipToBase64.toBase64Zip(fileList);
            log.info("文件base 64 加密：" + base64);
            ZipToBase64.Base64ToFile(base64, "C:\\Users\\cjy\\Desktop\\qqq\\新建文件夹\\a");
    
        }
    }