spring-app-java-r-svg-plot.java

@RequestMapping(value = "/load", produces = "image/svg+xml")
public ResponseEntity<String> load() {
  HttpHeaders responseHeaders = new HttpHeaders();
  responseHeaders.set("Refresh", "1");
  return new ResponseEntity<String>(
     plotFunction.apply(
       ManagementFactory.getOperatingSystemMXBean()
                        .getSystemLoadAverage()),
     responseHeaders,
     HttpStatus.OK);
}