记录处理跨域处理报错处理过程_the method addallowedoriginpattern(string) is unde

首先是参考：跨域理解
然后使用

@Configuration
public class CorsConfig {
    @Bean
    public CorsFilter corsFilter() {
        final UrlBasedCorsConfigurationSource urlBasedCorsConfigurationSource = new UrlBasedCorsConfigurationSource();
        final CorsConfiguration corsConfiguration = new CorsConfiguration();
        /*是否允许请求带有验证信息*/
        corsConfiguration.setAllowCredentials(true);
        /*允许访问的客户端域名*/
        corsConfiguration.addAllowedOrigin("*");
        /*允许服务端访问的客户端请求头*/
        corsConfiguration.addAllowedHeader("*");
        /*允许访问的方法名,GET POST等*/
        corsConfiguration.addAllowedMethod("*");
        urlBasedCorsConfigurationSource.registerCorsConfiguration("/**", corsConfiguration);
        return new CorsFilter(urlBasedCorsConfigurationSource);
    }
}
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报错

When allowCredentials is true, allowedOrigins cannot contain the special value "*“since that cannot be set on the “Access-Control-Allow-Origin” response header. To allow credentials to a set of origins, list them explicitly or consider using"allowedOriginPatterns” instead.
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错误描述
如果你的SpringBoot版本在2.0以上，在2.4版本以上需要改一下 corsConfiguration.addAllowedOrigin(“*”);
为addAllowedOriginPatterns（“”）

最后，以上方法均没有解决问题，又继续改

package yb.b2b.bd_product.core.config;

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;

import java.util.Collections;

@Configuration
public class CorsConfig {
    @Bean
    public CorsFilter corsFilter() {
        CorsConfiguration corsConfiguration = new CorsConfiguration();
        //1,允许任何来源
        corsConfiguration.setAllowedOriginPatterns(Collections.singletonList("*"));
        //2,允许任何请求头
        corsConfiguration.addAllowedHeader(CorsConfiguration.ALL);
        //3,允许任何方法
        corsConfiguration.addAllowedMethod(CorsConfiguration.ALL);
        //4,允许凭证
        corsConfiguration.setAllowCredentials(true);

        UrlBasedCorsConfigurationSource source = new UrlBasedCorsConfigurationSource();
        source.registerCorsConfiguration("/**", corsConfiguration);
        return new CorsFilter(source);
    }
}
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这个方法还是不能跨域

最后是是容器的配置中需要改变一个支持跨域的属性，也就是不熟悉导致。
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