Java-InputStream常用转换(字符串,字节数组)

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InputStream转字符串

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    public static String readIoToStr(InputStream is) {
        String result = null;
        try {
            byte[] data = new byte[is.available()];
            is.read(data);
            BASE64Encoder encoder = new BASE64Encoder();
            result = encoder.encode(data);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return result;
    }

字符串转InputStream

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    public static InputStream strToIo(String str) {
        try {
            return new ByteArrayInputStream(str.getBytes("UTF-8"));
        } catch (UnsupportedEncodingException e) {
            e.printStackTrace();
        }
        return null;
    }

byte[] 转InputStream

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    public static InputStream byteToIo(byte[] bytes) {
   return new ByteArrayInputStream(bytes);
    }

InputStream 转 byte[]

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    @SneakyThrows
    public static byte[] inputStreamTobyte(InputStream inputStream) {
        ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
        int available = inputStream.available();
        byte[] buff = new byte[available]; //buff用于存放循环读取的临时数据
        int rc = 0;
        while ((rc = inputStream.read(buff, 0, available)) > 0) {
            swapStream.write(buff, 0, rc);
        }
        return swapStream.toByteArray();
    }