Java：将JAR中的二进制文件读入标量，而不是原始字节[]

Question

I have a binary file, in my jar, and I want to slurp its contents in binary mode, not into a string of characters. Following this example

private byte[] readBinaryFile(String fileName) throws IOException {
    InputStream input = getClass().getResourceAsStream(fileName);
    ByteArrayOutputStream output = new ByteArrayOutputStream();

    for (int read = input.read(); read >= 0; read = input.read())
        output.write(read);

    byte[] buffer = output.toByteArray();

    input.close ();
    output.close();

    return buffer;
}

It's pretty trivial, but the calling context is expecting and Object. How do I pass this binary contents back to the caller, but not as a primitive array? I am trying to deliver this binary data as a response to a web service using jaxrs.

Answer 1

As @Jon notes, the caller should be just fine:

byte[] b = new byte[10];
Object o = b;

That works because as he points out a byte[] is an instance of Object .

Don't confuse bytes themselves, which are indeed primitives, with the array. All arrays are objects no matter what they contain.

So the caller should receive his Object and then send it back to his caller as application/octet-stream .