Cross-domain issue has been resolved [

• 问题：
  ‘http://xxxxx.yyyyy.com’ has been blocked by CORS policy: No ‘Access-Control-Allow-Origin’ header is present on on the requested resource.
• The reason:
  there is cross-domain issues
• Solution:

In fact, SpringMVChas been written to help us CORScross-domain filters: CorsFilterinterior has been achieved just mentioned decision logic, we directly use the output.
In excellent-gatewaywriting a configuration class, and registration CorsFilter:

Write CorsConfig profile in the routing gateway project, as shown below:

@Configuration
public class ExcellentCorsConfig {
    @Bean
    public CorsFilter corsFilter() {
        //1.添加CORS配置信息
        CorsConfiguration config = new CorsConfiguration();
        //1) 允许的域,不要写*，否则cookie就无法使用了
        config.addAllowedOrigin("http://manage.leyou.com");
        //2) 是否发送Cookie信息
        config.setAllowCredentials(true);
        //3) 允许的请求方式
        config.addAllowedMethod("OPTIONS");
        config.addAllowedMethod("HEAD");
        config.addAllowedMethod("GET");
        config.addAllowedMethod("PUT");
        config.addAllowedMethod("POST");
        config.addAllowedMethod("DELETE");
        config.addAllowedMethod("PATCH");
        // 4）允许的头信息
        config.addAllowedHeader("*");

        //2.添加映射路径，我们拦截一切请求
        UrlBasedCorsConfigurationSource configSource = new UrlBasedCorsConfigurationSource();
        configSource.registerCorsConfiguration("/**", config);

        //3.返回新的CorsFilter，参数：cors的配置员对象
        return new CorsFilter(configSource);
    }
}