Springcloud gatewayドメイン間問題

gatewayはspringmvcではなくwebfluxを使用しているので、webfluxのcorsを閉じてからgatewayのfilterからcorsを設定すればいいです.
まずgatewayバージョン

 
            org.springframework.cloud
            spring-cloud-starter-gateway
            2.0.1.RELEASE
        
        
            org.springframework.cloud
            spring-cloud-gateway-core
            2.0.1.RELEASE
        

**ps:2.0.1.RELEASE以下のバージョンでバグがあり、Conten-Typeはリクエストが設定されていない場合、ポインタNPEに問題が報告されます.公式バージョン2.0.1で修復**

package com.shanhe.gateway.global;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;
import org.springframework.web.util.pattern.PathPatternParser;

/**
 * @ClassName CorsConfig
 * @Author dlh
 * @Date 2019/5/7 0007    4:55
 * @Version 1.0
 **/
@Configuration
public class CorsConfig {
    @Bean
    public CorsWebFilter corsFilter() {
        CorsConfiguration config = new CorsConfiguration();
        config.addAllowedMethod("*");
        config.addAllowedOrigin("*");
        config.addAllowedHeader("*");

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource(new PathPatternParser());
        source.registerCorsConfiguration("/**", config);

        return new CorsWebFilter(source);
    }
}

ゲートウェイの前にグローバルfilterが設定されています

package com.shanhe.gateway.global;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.core.Ordered;
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.server.ServerWebExchange;
import reactor.core.publisher.Mono;

/**
 * @ClassName CrossOriginFilter
 * @Author dlh
 * @Date 2019/5/7 0007    4:50
 * @Version 1.0
 **/
@Component
public class CrossOriginFilter implements GlobalFilter, Ordered {

    private static Logger logger = LoggerFactory.getLogger(CrossOriginFilter.class);

    private static final String ALL = "*";
    private static final String MAX_AGE = "18000L";


    @Override
    public Mono filter(ServerWebExchange serverWebExchange, GatewayFilterChain gatewayFilterChain) {
        logger.info("gateway   ");
        ServerHttpRequest request = serverWebExchange.getRequest();
        ServerHttpResponse response = serverWebExchange.getResponse();
        HttpHeaders headers = response.getHeaders();
        headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_ORIGIN, "*");
        headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_METHODS, "POST, GET, PUT, OPTIONS, DELETE, PATCH");
        headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_CREDENTIALS, "true");
        headers.add(HttpHeaders.ACCESS_CONTROL_ALLOW_HEADERS, "*");
        headers.add(HttpHeaders.ACCESS_CONTROL_EXPOSE_HEADERS, ALL);
        headers.add(HttpHeaders.ACCESS_CONTROL_MAX_AGE, MAX_AGE);
        logger.info("      headers:{}",headers);
        if (request.getMethod() == HttpMethod.OPTIONS) {
            response.setStatusCode(HttpStatus.OK);
            return Mono.empty();
        }
        return gatewayFilterChain.filter(serverWebExchange);
    }

    @Override
    public int getOrder() {
        return -300;
    }
}

転載するhttps://www.jianshu.com/p/a46e62f9ad1c