spring cloud gateway 处理跨域问题

              Spring cloud gateway 设置https 和http同时支持

              Spring cloud gateway 拦截请求404 等HTTP 状态码

              Spring cloud gateway 修改response 截断问题，乱码问题解决

              Spring cloud gateway 详解和配置使用（文章较长） 

              Spring cloud Gateway 指定执行过滤器 （在配置文件中配置所需要过滤器）

任何操作都不需要，只需要把这代码加到启动类下即可

  @Beanpublic WebFilter corsFilter() {return (ServerWebExchange ctx, WebFilterChain chain) -> {ServerHttpRequest request = ctx.getRequest();if (!CorsUtils.isCorsRequest(request)) {return chain.filter(ctx);}HttpHeaders requestHeaders = request.getHeaders();ServerHttpResponse response = ctx.getResponse();HttpMethod requestMethod = requestHeaders.getAccessControlRequestMethod();HttpHeaders headers = response.getHeaders();headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, requestHeaders.getOrigin());headers.addAll(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, requestHeaders.getAccessControlRequestHeaders());if (requestMethod != null) {headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_METHODS, requestMethod.name());}headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true");headers.add(HttpHeaders.ACCESS_CONTROL_EXPOSE_HEADERS, ALL);headers.add(HttpHeaders.ACCESS_CONTROL_MAX_AGE, MAX_AGE);if (request.getMethod() == HttpMethod.OPTIONS) {response.setStatusCode(HttpStatus.OK);return Mono.empty();}return chain.filter(ctx);};}