Showing how to stream an image back from a Spring MVC Controller

gistfile1.java

    @RequestMapping("/minuteGraph.htm")
    public ResponseEntity <byte []> getUpdatesByMinuteGraph() {
        HttpStatus responseCode = HttpStatus.OK;
        byte [] image = new byte[0];
        Map <String,Long> updatesByMinute = reportDao.loadUpdateCountsByMinute(15);
        try {
            image = this.getUpdateCountByMinuteGraph(updatesByMinute);
        } catch (Exception e) {
            responseCode = HttpStatus.INTERNAL_SERVER_ERROR;
        }
        return new ResponseEntity<byte[]>(image, responseCode);
    }