如何解决Spring Cloud Gateway中请求跨域的问题？

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这篇文章主要介绍了Spring Cloud Gateway请求跨域问题解决方案，通过示例代码进行说明，内容非非常详细，适合对Spring Cloud Gateway有一定了解的学习者或工作者参考。以下为代码示例：

java@Configurationpublic class GlobalCorsConfig implements WebMvcConfigurer {

@Override public void addCorsMappings(CorsRegistry registry) { registry.addMapping(/**) .allowedOrigins(*) .allowedMethods(GET, POST, PUT, DELETE, OPTIONS) .allowedHeaders(*) .allowCredentials(true); }}

这篇文章主要介绍了spring cloud gateway请求跨域问题解决方案,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

代码如下

@Configuration public 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(); } 　　　//添加请求头　 @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); }; } 　　//将请求头中有多个值的去掉 这是该版本的一个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() { // 指定此过滤器位于NettyWriteResponseFilter之后 // 即待处理完响应体后接着处理响应头 return NettyWriteResponseFilter.WRITE_RESPONSE_FILTER_ORDER + 1; } }

此处的spring-cloud-gateway的版本是2.1.3.RELEASE

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持易盾网络。