java代码如何将拆分后的zip文件合并一个zip文件呢?

今天接到一个需求,需将一个200MB的zip文件合并
当初压缩时，分了8个小的zip文件，那么如何实现这个zip文件合并的需求呢?下文笔者将一一道来，如下所示

合并ZIP的实现思路

1.定义ZipFile对象
2.生成ZipEntry对象
  向ZipFile对象中添加文件
采用这种方式,即可实现Zip文件的合并操作

合并ZIP的示例

 public static void splitZip(String zipName, String location, String NewZip) throws IOException{
    FileInputStream fis  = new FileInputStream(location);
    ZipInputStream zipInputStream = new ZipInputStream(fis);
    ZipEntry entry = null;
    int currentChunkIndex = 0;
    long entrySize = 0;
    ZipFile zipFile = new ZipFile(location);
    Enumeration enumeration = zipFile.entries();
    String copDest = zipCopyDest + "\\" + NewZip + "_" + currentChunkIndex +".zip";
    FileOutputStream fos = new FileOutputStream(new File(copDest));
    BufferedOutputStream bos = new BufferedOutputStream(fos);
    ZipOutputStream zos = new ZipOutputStream(bos);
    long currentSize = 0; 
    try {
        while ((entry = zipInputStream.getNextEntry()) != null && enumeration.hasMoreElements()) {
            ZipEntry zipEntry = (ZipEntry) enumeration.nextElement();

            System.out.println(zipEntry.getName());
            System.out.println(zipEntry.getSize());
            
			entrySize = zipEntry.getSize();
            ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
            if((currentSize + entrySize) > MAX_FILE_SIZE) {
                zos.close();
                currentChunkIndex++;
                zos = getOutputStream(currentChunkIndex, NewZip);
                currentSize = 0;
            }else{
                currentSize += entrySize;
                zos.putNextEntry(new ZipEntry(entry.getName()));
                byte[] buffer = new byte[8192];
                int length = 0;
                while ((length = zipInputStream.read(buffer)) > 0) {
                    outputStream.write(buffer, 0, length);
                }
                byte[] unzippedFile = outputStream.toByteArray();
                zos.write(unzippedFile);
                unzippedFile = null;
                outputStream.close();
                zos.closeEntry();
            }
        }
    } finally {
        zos.close();
    }
}