Java IO(5) 字节流 BufferedInputStream和BufferedOutputStream实现文件拷贝

BufferedInputStream方法：

BufferedOutputStream方法：

@Test
@DisplayName("每次读取1024个字节")
public void testFileReader() {
    String inputImgPath = "src/main/resources/static/test1.jpg";
    String outputImgPath = "src/main/resources/static/test1_copy.jpg";
    try (BufferedInputStream bis = new BufferedInputStream(new FileInputStream(inputImgPath));
         BufferedOutputStream bos = new BufferedOutputStream(new FileOutputStream(outputImgPath))
    ) {
        byte[] buff = new byte[1024];
        int readLength;
        while ((readLength = bis.read(buff)) != -1) {
            bos.write(buff, 0, readLength);
        }
    } catch (FileNotFoundException e) {
        throw new RuntimeException(e);
    } catch (IOException e) {
        throw new RuntimeException(e);
    }
}