在springCloud gateway网关层解决跨域问题

最新推荐文章于 2024-05-30 16:49:01 发布

原创最新推荐文章于 2024-05-30 16:49:01 发布

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本文介绍了如何在SpringCloudGateway网关层配置WebFilter，处理跨域请求。通过设置响应头，允许特定的源、方法、头部和凭证，实现了CORS（跨源资源共享）功能，确保了API服务对不同源的访问支持。

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在springCloud gateway网关层解决跨域问题


@SpringBootApplication
@ComponentScan("com.xxcq")
public class GatewayModelProviderApplication {

    public static void main(String[] args) {
        SpringApplication.run(GatewayModelProviderApplication.class, args);
    }
    @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);
        };
    }

}