springcloud zuul网关和微服务层同时支持跨域解决方案

1.每个微服务支持跨域，

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.config.annotation.CorsRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurerAdapter;

/**
 * 跨域处理
 * @date 18/10/12
 */

@Configuration
public class WebConfiguration extends WebMvcConfigurerAdapter {

    /**
     * 跨域处理
     *
     * @param registry
     */
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**").allowedHeaders("*").allowedMethods("*").allowedOrigins("*");
    }
}

2.zuul网关支持跨域

/**
	 * 处理跨域问题
	 * @return
	 */
	@Bean
	public CorsFilter corsFilter() {
		final UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
		final CorsConfiguration corsConfiguration = new CorsConfiguration();
        corsConfiguration.setAllowCredentials(true);
		corsConfiguration.addAllowedHeader("*");
		corsConfiguration.addAllowedOrigin("*");
		corsConfiguration.addAllowedMethod("*");
		source.registerCorsConfiguration("/**", corsConfiguration);
		return new CorsFilter(source);
	}

3.如果需要同时支持跨域，需要在zuul网关的application.yml配置中忽略头部

zuul:
  sensitive-headers: Access-Control-Allow-Origin
  ignored-headers: Access-Control-Allow-Credentials,Access-Control-Allow-Origin,Vary,X-Frame-Options,token