![](/img/trans.png)
[英]how to set non-standard HttpStatus in Spring reactive's ServerHttpResponse?
[英]reactive ServerHttpResponse how to return jpg?
我的控制器代码:
@RestController
public class CaptchaService {
@GetMapping(value="/verify")
public void captchaService(ServerHttpResponse response, WebSession webSession) throws IOException {
BufferedImage image = new BufferedImage(61, 20, BufferedImage.TYPE_INT_RGB);
Graphics g = image.getGraphics();
Random r = new Random();
g.setColor(new Color(r.nextInt(255), r.nextInt(255), r.nextInt(255)));
g.fillRect(0, 0, 61, 20);
String code = getNumber();
webSession.getAttributes().put("captcha", code);
g.setFont(new Font(Font.SANS_SERIF, Font.BOLD, 20));
g.setColor(new Color(r.nextInt(255), r.nextInt(255), r.nextInt(255)));
g.drawString(code, 5, 18);
response.getHeaders().setContentType(MediaType.IMAGE_JPEG);
OutputStream os = response.bufferFactory().allocateBuffer().asOutputStream();
ImageIO.write(image, "jpeg", os);
}
}
我收到
localhost:8080/verify", return content-length: 0 Content-Type: image/jpeg,
为什么会这样,图片在哪里?
这将正常工作! 我已经在我的项目中使用过它:
@GetMapping("/world")
public Mono<Void> world(ServerWebExchange exchange) throws Exception {
ServerHttpResponse response = exchange.getResponse();
response.setStatusCode(HttpStatus.OK);
response.getHeaders().setContentType(MediaType.IMAGE_JPEG);
DataBufferFactory dataBufferFactory = new DefaultDataBufferFactory();
fileToByte(new File("F:\\1.jpg"));
DataBuffer dataBuffer = dataBufferFactory.wrap(bytes);
return response.writeWith(Flux.just(dataBuffer));
}
声明:本站的技术帖子网页,遵循CC BY-SA 4.0协议,如果您需要转载,请注明本站网址或者原文地址。任何问题请咨询:yoyou2525@163.com.