byte[]和InputStream的相互转换
1：byte[]转换为InputStream流
InputStream sbs = new ByteArrayInputStream(byte[] buf);
2：InputStream转换为byte[]数组
ByteArrayOutputStream swapStream = new ByteArrayOutputStream();byte[] buff = new byte[100]; //buff用于存放循环读取的临时数据int rc = 0;while ((rc = inStream.read(buff, 0, 100)) > 0) { swapStream.write(buff, 0, rc);}byte[] in2b = swapStream.toByteArray(); //in_b为转换之后的结果