SSM影院购票系统项目跨域问题

点击登陆后出现network error
Access to XMLHttpRequest at 'http://edy45u.natappfree.cc/user/login' from origin 'http://localhost:8080' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.

在后台WebMvcConfigurer的配置类里面添加跨域处理，代码如下。

//允许跨域访问
    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**")
                .allowedOrigins("*")
                .allowCredentials(true)
                .allowedMethods("GET", "POST", "PUT", "DELETE", "OPTIONS", "HEAD")
                .maxAge(3600);
    }

在controller加一个注解就行了吧