相关疑难解决方法(0)

我正在开发一个带有Rest接口和dart前端的Spring Boot应用程序.

XMLHttpRequest确实执行一个完全正确处理的OPTIONS请求.在此之后,发出最终的GET("/ products")请求并失败:

请求的资源上不存在"Access-Control-Allow-Origin"标头.原产地" 的http://本地主机:63343 ",因此没有允许访问.

经过一些调试后,我发现了以下内容:为RepositoryRestHandlerMapping之外的所有子类填充了AbstractHandlerMapping.corsConfiguration.在RepositoryRestHandlerMapping中,没有corsConfiguration在创建时存在/设置,因此它不会被识别为cors路径/资源.
=>没有连接CORS标头
这可能是问题吗？我怎么设置它？

配置类:

@Configuration
public class RestConfiguration extends RepositoryRestMvcConfiguration {

    @Override
    public void addCorsMappings(CorsRegistry registry) {
        registry.addMapping("/**").allowCredentials(false).allowedOrigins("*").allowedMethods("PUT", "POST", "GET", "OPTIONS", "DELETE").exposedHeaders("Authorization", "Content-Type");
    }

   ...
}

我甚至尝试设置每个注释的Cors:

@CrossOrigin( methods = RequestMethod.GET, allowCredentials = "false")
public interface ProductRepository extends CrudRepository<Product, String> {


}

原始请求标头:

GET /products HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Cache-Control: max-age=0
authorization: Basic dXNlcjpwYXNzd29yZA==
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/43.0.2357.130 Chrome/43.0.2357.130 Safari/537.36
Content-Type: application/json
Accept: */*
Referer: …