@GetMapping(path = "/modifyResponse")
    public Mono<String> modifyResponse(final ServerWebExchange exchange) {
        exchange.getResponse().getHeaders().add("useByModifyResponse", String.valueOf(true));
        exchange.getResponse().getHeaders().add("setHeadersExist", String.valueOf(true));
        exchange.getResponse().getHeaders().add("replaceHeaderKeys", String.valueOf(true));
        exchange.getResponse().getHeaders().add("removeHeaderKeys", String.valueOf(true));
        final Map<String, Boolean> body = ImmutableMap.<String, Boolean>builder()
            .put("originReplaceBodyKeys", true)
            .put("removeBodyKeys", true)
            .build();
        return Mono.just(GsonUtils.getInstance().toJson(body));
    }
modify response.

@param exchange exchange
@return response mono
shenyu-examples/shenyu-examples-http-swagger3/src/main/java/org/apache/shenyu/examples/http/controller/HttpTestController.java