spring cloud gateway网关处理跨域

最新推荐文章于 2025-04-21 10:53:19 发布

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最新推荐文章于 2025-04-21 10:53:19 发布

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本文链接：https://blog.youkuaiyun.com/qq_42151769/article/details/105192413

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本文介绍了在Spring Cloud Gateway中遇到的跨域问题，指出在Spring Boot 2.1.x以上版本存在的一个bug可能导致配置无效。提供了解决该问题的方法，即在Gateway中过滤掉部分配置，并给出了具体的配置类代码，通过这种方式成功解决了跨域请求的错误。

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首先,gateway中不能引入web的依赖:

在网上找到的跨域配置如下:

package com.wm.blog_gateway.config;

import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.cloud.gateway.discovery.DiscoveryClientRouteDefinitionLocator;
import org.springframework.cloud.gateway.discovery.DiscoveryLocatorProperties;
import org.springframework.cloud.gateway.filter.GatewayFilterChain;
import org.springframework.cloud.gateway.filter.GlobalFilter;
import org.springframework.cloud.gateway.filter.NettyWriteResponseFilter;
import org.springframework.cloud.gateway.route.RouteDefinitionLocator;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
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.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;

import java.util.ArrayList;


/**
 * 跨域处理,线上使用nginx替代
 */
@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 DiscoveryClientRouteDefinition

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