补充contenttype解决ie11验证码不出现问题

src/main/java/org/sss/presentation/noui/controller/VerifyCodeCreateController.java

@@ -97,6 +97,7 @@ public class VerifyCodeCreateController {
             log.info("key===" + kb);
             RedisUtil.set(kb, codes.toString(), vcsessionout);
 
+            response.setHeader("Content-Type","image/jpeg");
 //            request.getSession().setAttribute(Constants.VERIFYCODE, codes.toString());
             ImageIO.write(bi, "JPG", response.getOutputStream());
         } catch (Exception e) {