Question

This is what I have so far,

Socket clientSocket = new Socket(HOST, PORT);

ByteArrayOutputStream buffer = new ByteArrayOutputStream();

InputStream is = socket.getInputStream();
byte[] byteChunk = new byte[1024];

int c = is.read(byteChunk);

while (c != -1){
    buffer.write(byteChunk, 0, c);
    c = is.read(byteChunk);
}

BufferedImage bufferedImage = ImageIO.read(new ByteArrayInputStream(buffer.toByteArray()));

My problem with my code is ImageIO.read() returns null.

When I print the content of ByteArrayOutputStream object what i get is header part

HTTP/1.1 200 OK
Date: Fri, 30 Dec 2011 11:34:19 GMT
Server: Apache/2.2.3 (Debian) ...........
Last-Modified: Tue, 20 Dec 2011 19:12:23 GMT
ETag: "502812-490e-4b48ad8d273c0"
Accept-Ranges: bytes
Content-Length: 18702
Connection: close
Content-Type: image/jpeg

followed with a empty line plus many lines with different characters such as Àã$sU,e6‡Í~áŸP;Öã….

Again my problem is ImageIO.read() function returns null.

Thanks in advance.

Answer 1

Why you don’t want to use simple http URL to get image from host?
I mean:

URL imageURL = new URL("http://host:port/address");
BufferedImage bufferedImage = ImageIO.read(imageURL);

If you want to use plain socket you have to parse http response and extract data from the http reply manually: read/skip headers, read binary data and pass it to ImageIO.read (or seek stream to correct position and pass stream to ImageIO.read).