When allowCredentials is true, allowedOrigins cannot contain the special value "*" since that cannot be set on the "Access-Control-Al low-Origin" response header. To allow credentialicitl.

spring boot 2.4版本跨域问题 

报错信息：

When allowCredentials is true, allowedOrigins cannot contain the special value "*" since that cannot be set on the "Access-Control-Al    low-Origin" response header. To allow credentials to a set of origins, list them explicitly or consider using "allowedOriginPatterns" instead

解决办法：跨域配置报错，将.allowedOrigins替换成.allowedOriginPatterns即可。

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOriginPatterns("*")
                .allowedMethods("*")
                .allowCredentials(false)
                .maxAge(3600);
    }