文件读写操作inputStream转为byte[] , 将InputStream写入本地文件

 将InputStream写入本地文件

    /**
     * 将InputStream写入本地文件
     *
     * @param destination 写入本地目录
     * @param input       输入流
     * @throws IOException IOException
     */
    public static void writeToLocal(String destination, InputStream input)
            throws IOException {
        int index;
        byte[] bytes = new byte[1024];
        FileOutputStream downloadFile = new FileOutputStream(destination);
        while ((index = input.read(bytes)) != -1) {
            downloadFile.write(bytes, 0, index);
            downloadFile.flush();
        }
        input.close();
        downloadFile.close();
    }

inputStream转为byte[]

    /**
     * inputStream转为byte[]
     *
     * @param inStream
     * @return byte[]
     * @throws IOException
     */
    public byte[] convert2ByteArray(InputStream inStream) throws IOException {
        ByteArrayOutputStream swapStream = new ByteArrayOutputStream();
        byte[] buff = new byte[1024];
        int rc = 0;
        while ((rc = inStream.read(buff, 0, 1024)) > 0) {
            swapStream.write(buff, 0, rc);
        }
        byte[] in_b = swapStream.toByteArray();// in_b为转换之后的结果
        return in_b;
    }