小編給大家分享一下如何解決springcloudgateway請求跨域問題,相信大部分人都還不怎么了解,因此分享這篇文章給大家參考一下,希望大家閱讀完這篇文章后大有收獲,下面讓我們一起去了解一下吧!
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代碼如下
@Configurationpublic class CorsConfig implements GlobalFilter, Ordered { private static final String ALL = "*"; private static final String MAX_AGE = "18000L"; @Bean public RouteDefinitionLocator discoveryClientRouteDefinitionLocator(DiscoveryClient discoveryClient, DiscoveryLocatorProperties properties) { return new DiscoveryClientRouteDefinitionLocator(discoveryClient, properties); } @Bean public ServerCodecConfigurer serverCodecConfigurer() { return new DefaultServerCodecConfigurer(); } //添加請求頭 @Bean public 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); }; } //將請求頭中有多個(gè)值的去掉 這是該版本的一個(gè)bug @Override public Mono<Void> filter(ServerWebExchange exchange, GatewayFilterChain chain) { return chain.filter(exchange).then(Mono.defer(() -> { exchange.getResponse().getHeaders().entrySet().stream() .filter(kv -> (kv.getValue() != null && kv.getValue().size() > 1)) .filter(kv -> (kv.getKey().equals(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN) || kv.getKey().equals(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS))) .forEach(kv -> { kv.setValue(new ArrayList<String>() {{ add(kv.getValue().get(0)); }}); }); return chain.filter(exchange); })); } @Override public int getOrder() { // 指定此過濾器位于NettyWriteResponseFilter之后 // 即待處理完響應(yīng)體后接著處理響應(yīng)頭 return NettyWriteResponseFilter.WRITE_RESPONSE_FILTER_ORDER + 1; }}
此處的spring-cloud-gateway的版本是2.1.3.RELEASE
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