java 解压多级目录 zip 压缩包

关键在于  

zipEntry.isDirectory()  

用于判断压缩包内的条目是不是文件夹

  /**
     * 解压 zip
     *
     * @param zipFile
     * @param descDir
     */
    public static void unpack(File zipFile, File descDir) {
        try (ZipInputStream inputStream = new ZipInputStream(new FileInputStream(zipFile), Charset.forName("GBK"))) {
            if (!descDir.exists()) {
                descDir.mkdirs();
            }
            ZipEntry zipEntry = null;
            File outfile = null;
            while ((zipEntry = inputStream.getNextEntry()) != null) {
                outfile = checkFileDir(descDir, zipEntry.getName());
                if (zipEntry.isDirectory()) {
                    outfile.mkdirs();
                } else {
                    OutputStream os = null;
                    try {
                        os = new BufferedOutputStream(new FileOutputStream(new File(descDir, zipEntry.getName())));
                        IOUtils.copy(inputStream, os);
                    } finally {
                        IOUtils.closeQuietly(os);
                    }
                }
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * zip 条目覆盖漏洞校验
     * 防止压缩包内文件名称包含路径 例：../a.jpg
     *
     * @param destDir
     * @param fileName
     * @return
     */
    public static File checkFileDir(File destDir, String fileName) {
        File destFile = new File(destDir, fileName);
        String destDirPath = "";
        String destFilePath = "";
        try {
            destDirPath = destDir.getCanonicalPath();
            destFilePath = destFile.getCanonicalPath();
        } catch (IOException e) {
            throw new RuntimeException(e.getMessage());
        }
        if (!destFilePath.startsWith(destDirPath + File.separator)) {
            throw new RuntimeException("文件不在许可目录内！");
        }
        // 防止压缩包一级目录只有文件夹时，解压报错找不到文件
        File parentDir = destFile.getParentFile();
        if(!parentDir.exists()){
	        parentDir.mkdirs();
        }
        return destFile;
    }

解压过程提示报错：java.lang.IllegalArgumentException: MALFORMED

java.lang.IllegalArgumentException: MALFORMED
	at java.util.zip.ZipCoder.toString(ZipCoder.java:58)
	at java.util.zip.ZipInputStream.readLOC(ZipInputStream.java:300)
	at java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:122)

原因

windows环境下，默认字符集为GBK，ZipFile默认使用UTF-8字符集，当文件名存在中文时，处理时就会报错

解决方法

创建 ZipInputStream 时，设置字符集为GBK

ZipInputStream inputStream = new ZipInputStream(new FileInputStream(zipFile), Charset.forName("GBK")