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package com.xiaobu.test.InputStream;import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.nio.charset.StandardCharsets;/** * @author xiaobu * @version JDK1.8.0_171 * @date on  2019/3/28 16:00 * @description V1.0 byte数组和InputStream的相互转换 */public class Byte2InputStream {    /**     * 功能描述: byte数组转 InputStream     *     * @param bytes byte数组     * @return java.io.InputStream     * @author xiaobu     * @date 2019/3/28 16:01     * @version 1.0     */    public static InputStream byte2InputStream(byte[] bytes) {        return new ByteArrayInputStream(bytes);    }    /**     * 功能描述:     *     * @param inputStream 输入流     * @return byte[] 数组     * @author xiaobu     * @date 2019/3/28 16:03     * @version 1.0     */    public static byte[] inputStream2byte(InputStream inputStream) throws IOException {        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();        byte[] buff = new byte[100];        int rc = 0;        while ((rc = inputStream.read(buff, 0, 100)) > 0) {            byteArrayOutputStream.write(buff, 0, rc);        }        return byteArrayOutputStream.toByteArray();    }    public static void main(String[] args) {        String str = "你好呀";        byte[] bytes = str.getBytes();        InputStream inputStream = byte2InputStream(bytes);        try {            byte[] bytes1 = inputStream2byte(inputStream);            String string = new String(bytes1, StandardCharsets.UTF_8);            System.out.println("string = " + string);        } catch (IOException e) {            e.printStackTrace();        }    }}

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