byte[]跟InputStream的相互转换

byte[]和InputStream的相互转换
1：byte[]转换为InputStream流

InputStream sbs = new ByteArrayInputStream(byte[] buf);

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