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本文介紹了被CORS阻止的Spring Gateway請求(No Acces0Control-Allow-Orgin Header)的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學(xué)習(xí)吧！

問題描述

我有一個角度前端、Spring云網(wǎng)關(guān)和一個Spring Web服務(wù)。當(dāng)我嘗試通過網(wǎng)關(guān)將GET/POST數(shù)據(jù)發(fā)送到Spring Web服務(wù)時，我得到以下錯誤：CORS error。當(dāng)將數(shù)據(jù)直接發(fā)送到Web服務(wù)時，它工作得很好，所以我認(rèn)為問題出在網(wǎng)關(guān)。

在網(wǎng)關(guān)中，我必須使用以下文件：

@Configuration
@CrossOrigin(origins = "*")
public class SpringCloudConfig {

    @Bean
    public RouteLocator gatewayRoutes(RouteLocatorBuilder builder){
        return builder.routes()
                .route(r -> r.path("/users/**")
                .uri("http://localhost:8081/")
                .id("userService"))

                .route(r -> r.path("/posts/**")
                        .uri("http://localhost:8082/")
                        .id("postService"))

                .route(r -> r.path("/auth/**")
                        .uri("http://localhost:8083/")
                        .id("securityService"))
                .build();
    }

}

應(yīng)用程序.屬性：我以為服務(wù)器：Cloud：等。會奏效，但不會

server.port=8080

spring:
cloud:
gateway:
globalcors:
corsConfigurations:
'[/**]':
allowedOrigins: "*"
allowedMethods:
- GET
- POST

Pom.xml

    <?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.2.6.RELEASE</version>
    <relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.cloudGateway</groupId>
<artifactId>gateway</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>gateway</name>
<description>Gateway project for Spring Boot</description>

<properties>
    <java.version>1.8</java.version>
    <spring-cloud.version>Hoxton.SR3</spring-cloud.version>
</properties>

<dependencies>
    <dependency>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-gateway</artifactId>
    </dependency>

    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-test</artifactId>
        <scope>test</scope>
        <exclusions>
            <exclusion>
                <groupId>org.junit.vintage</groupId>
                <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
</dependencies>

<dependencyManagement>
    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-dependencies</artifactId>
            <version>${spring-cloud.version}</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

<build>
    <plugins>
        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>
    </plugins>
</build>

CorsConfiguration文件：

package com.cloudGateway.gateway;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.reactive.CorsWebFilter;
import org.springframework.web.cors.reactive.UrlBasedCorsConfigurationSource;

import java.util.Arrays;
import java.util.Collections;

@Configuration
public class CorsConfiguration extends org.springframework.web.cors.CorsConfiguration {

    @Bean
    public CorsWebFilter corsWebFilter() {

    final CorsConfiguration corsConfig = new CorsConfiguration();
    corsConfig.setAllowedOrigins(Collections.singletonList("*"));
    corsConfig.setMaxAge(3600L);
    corsConfig.setAllowedMethods(Arrays.asList("GET", "POST"));
    corsConfig.addAllowedHeader("*");

    final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
    source.registerCorsConfiguration("/**", corsConfig);

    return new CorsWebFilter(source);
}

網(wǎng)關(guān)回購：https://github.com/KylevanRaaij/Gateway

要連接的服務(wù)：https://github.com/KylevanRaaij/UserService(此服務(wù)在直接連接時起作用)(例如我的角度項目)

推薦答案

Spring文檔告訴它足以在Application.yml中聲明這樣的配置

spring:
  cloud:
    gateway:
      globalcors:
        corsConfigurations:
          '[/**]':
            allowedOrigins: "*"
            allowedMethods:
            - GET
            - POST

您還可以定義您的自定義CorsConfiguration：

@Configuration
public class CorsConfiguration{
    @Bean
    public CorsWebFilter corsWebFilter() {

        final CorsConfiguration corsConfig = new CorsConfiguration();
        corsConfig.setAllowedOrigins(Collections.singletonList("*"));
        corsConfig.setMaxAge(3600L);
        corsConfig.setAllowedMethods(Arrays.asList("GET", "POST"));
        corsConfig.addAllowedHeader("*");

        final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", corsConfig);

        return new CorsWebFilter(source);
    }  
}

這篇關(guān)于被CORS阻止的Spring Gateway請求(No Acces0Control-Allow-Orgin Header)的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，