java 创建大小的InputStream

Posted 2021-05-08

    private static final Integer BYTE_IN_MEGABYTE = 1000000;

    public static InputStream createInputStreamOfSize(final Integer sizeInMb) {
        byte[] file = new byte[BYTE_IN_MEGABYTE * sizeInMb];
        Arrays.fill(file, (byte) 1);
        return new ByteArrayInputStream(file);
    }