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byte[]、File、InputStream互转

雪域迷影 2023-09-21 阅读 32


1、将File、FileInputStream 转换为byte数组:

    File file = new File("file.txt");

    InputStream input = new FileInputStream(file);

    byte[] byt = new byte[input.available()];

    input.read(byt);

 

2、将byte数组转换为InputStream:

    byte[] byt = new byte[1024];

    InputStream input = new ByteArrayInputStream(byt);

 

3、将byte数组转换为File:

    File file = new File('');

    OutputStream output = new FileOutputStream(file);

    BufferedOutputStream bufferedOutput = new BufferedOutputStream(output);

    bufferedOutput.write(byt);

 

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