跨域问题 之浏览器报No 'Access-Cotrol-Allow-Origin‘

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.web.cors.CorsConfiguration;
import org.springframework.web.cors.UrlBasedCorsConfigurationSource;
import org.springframework.web.filter.CorsFilter;

@Configuration
public class GlobalCorsConfig {

    @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coolie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
        return  new CorsFilter(configSource);

    }
}