我可以直接从文件夹创建一个byte []吗？

A web Service expects a byte[] coming from a zip file.

Web服务需要来自zip文件的byte []。

I have some files in a folder that I zip with Java and then I get the byte[] from this zip file.

我在一个文件夹中有一些文件,我用Java压缩,然后从这个zip文件中获取byte []。

Is this necessary or can I create the byte[] straight from the folder?

这是必要的还是可以直接从文件夹创建byte []?

2 个解决方案

#1

I think something like this would allow you to do what you want without writing as long as the files are not going to be very big.

我认为只要文件不会很大,这样的东西就可以让你在不写的情况下做你想做的事。

String[] sourceFiles = { "C:/file1", "C:/file2" };

ByteArrayOutputStream baos = new ByteArrayOutputStream();
ZipOutputStream zout = new ZipOutputStream(baos);

byte[] buffer = new byte[4096];

for (int i = 0; i < sourceFiles.length; i++)
{
    FileInputStream fin = new FileInputStream(sourceFiles[i]);
    zout.putNextEntry(new ZipEntry(sourceFiles[i]));

    int length;
    while ((length = fin.read(buffer)) > 0)
    {
        zout.write(buffer, 0, length);
    }

    zout.closeEntry();
    fin.close();
}

zout.close();

byte[] bytes = baos.toByteArray();

#2

A folder is a collection of files. It is a container. It does not have a byte stream to get in the first place.

文件夹是文件的集合。这是一个容器。它首先没有字节流。

On the other hand, a ZIP (or any archive) is a file. The information about the different files is stored within the ZIP file itself

另一方面,ZIP(或任何存档)是一个文件。有关不同文件的信息存储在ZIP文件本身中

However, you can iterate through the folder contents, cook up a byte array and then use it (you are doing that anyways while creating the ZIP).

但是,您可以遍历文件夹内容,烹饪一个字节数组然后使用它(在创建ZIP时,您仍然这样做)。

#1