java server/client将downloadad文件保存为HDD

Question

我通过这个代码收到一个文件,"bos.write"将它保存到我的硬盘上.一切都很好.由于我在几秒内发送文件,我以为我可以将文件存储在内存而不是硬盘.现在我该怎么做？

File path = new File("C://anabella//test1.txt");
    BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(path));
    int size = 1024;
    int val = 0;
    byte[] buffer = new byte[1024];
        while (fileSize >0) {
       val = in.read(buffer, 0, size);
       bos.write(buffer, 0, val);
       fileSize -= val;
       if (fileSize < size)
       size = (int) fileSize;
    }

Answer 1

如果您提前知道大小，您甚至不需要 ByteArrayOutputStream

 InputStream is = socket.getInputStream(); // or where ever the inputstream comes from.
 DataInputStream in = new DataInputStream(is);
 byte[] bytes = new byte[fileSize];
 in.readFully(bytes);

将字节发送到任何 OutputStream，例如

 OutputStream os = ...
 os.write(bytes);

这些字节将包含文件的内容。