InputStream、byte[] 互转

InputStream转byte[]

private byte[] getBytesFromInputStream(InputStream is) throws IOException {
ByteArrayOutputStream bytestream = new ByteArrayOutputStream();
int ch;
while ((ch = is.read()) != -1) {
bytestream.write(ch);
}
byte imgdata[] = bytestream.toByteArray();
bytestream.close();
return imgdata;
}

byte[]转InputStream

byte[] data;
InputStream is = new ByteArrayInputStream(data);

http://mingkg21.javaeye.com/blog/431067