spring cloud gateway 跨域配置

古城微笑少年丶 2022-10-20 14:57 7阅读 0赞

spring cloud 版本为  Greenwich.SR1

加入一个类即可

import org.springframework.context.annotation.Bean;
    import org.springframework.http.HttpHeaders;
    import org.springframework.http.HttpMethod;
    import org.springframework.http.HttpStatus;
    import org.springframework.http.server.reactive.ServerHttpRequest;
    import org.springframework.http.server.reactive.ServerHttpResponse;
    import org.springframework.stereotype.Component;
    import org.springframework.web.cors.reactive.CorsUtils;
    import org.springframework.web.server.ServerWebExchange;
    import org.springframework.web.server.WebFilter;
    import org.springframework.web.server.WebFilterChain;
    import reactor.core.publisher.Mono;
    
    @Component
    public class CrosFilter {
        private static final String ALLOWED_HEADERS = "x-requested-with, authorization, Content-Type, Authorization, credential, X-XSRF-TOKEN,token,username,client, ETag,If-None-Match";
        private static final String ALLOWED_METHODS = "GET, PUT, POST, DELETE, OPTIONS";
        private static final String ALLOWED_ORIGIN = "*";
        private static final String MAX_AGE = "18000L";
    
        @Bean
        public WebFilter corsFilter() {
            return (ServerWebExchange ctx, WebFilterChain chain) -> {
                ServerHttpRequest request = ctx.getRequest();
                //允许所有请求跨域
                if (CorsUtils.isCorsRequest(request)) {
                    ServerHttpResponse response = ctx.getResponse();
                    HttpHeaders headers = response.getHeaders();
                    headers.add("Access-Control-Allow-Origin", ALLOWED_ORIGIN);
                    headers.add("Access-Control-Allow-Methods", ALLOWED_METHODS);
                    headers.add("Access-Control-Max-Age", MAX_AGE);
                    headers.add("Access-Control-Allow-Headers", ALLOWED_HEADERS);
                    headers.add("Access-Control-Expose-Headers", "ETag");
                    headers.add("Access-Control-Allow-Credentials", "true");
                    if (request.getMethod() == HttpMethod.OPTIONS) {
                        response.setStatusCode(HttpStatus.OK);
                        return Mono.empty();
                    }
                }
                return chain.filter(ctx);
            };
        }
    }