Good afternoon,
With Jetty 9.4.21.v20190926 I run a custom servlet (a WAR-file), which is
able to generate images like this one:
https://slova.de/ws/puzzle2?mid=669600
by the following code:
@Override
protected void doGet(HttpServletRequest httpReq, HttpServletResponse
httpResp) throws ServletException, IOException {
BufferedImage image = new BufferedImage(512, 512,
BufferedImage.TYPE_INT_RGB);
Graphics2D g = image.createGraphics();
// ...drawing code skipped here...
g.dispose();
httpResp.setStatus(HttpServletResponse.SC_OK);
httpResp.setContentType("image/png");
ImageIO.write(image, "png", httpResp.getOutputStream());
}
This works well and now I would like to add another feature to my servlet:
uploading the same image by HTTP POST to another website.
I understand, that I should use MultiPartContentProvider and the following
code:
MultiPartContentProvider multiPart = new MultiPartContentProvider();
multiPart.addFilePart("attached_media", "img.png", new
PathContentProvider(Paths.get("/tmp/img.png")), null);
multiPart.close();
however I do not want to save the generated image as a temporary file.
Instead I would like to use ByteBufferContentProvider or maybe
InputStreamContentProvider… but how to marry them with ImageIO.write call?
Thank you
Alex
P.S. I have also asked this question at
https://stackoverflow.com/questions/58713134/how-to-upload-a-bufferedimage-using-jetty-http-client-and-multipartcontentprovid
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