javascript - 不允许使用 Gulp、Restangular、Java EE 和 Wildfly 8 访问 Origin 'http://localhost:8888'

Question

Restangular 可以与 post() 或 get() 配合使用，但如果我想删除某些内容，则会出现以下错误:

No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin 'http://localhost:8888' is therefore not allowed access.

我尝试了此网站上的解决方案:

How to enable Cross domain requests on JAX-RS web services?

@Provider
public class CORSFilter implements ContainerResponseFilter {

    @Override
    public void filter(final ContainerRequestContext requestContext,
                       final ContainerResponseContext cres) throws IOException {

        cres.getHeaders().add("Access-Control-Allow-Origin", "*");
        cres.getHeaders().add("Access-Control-Allow-Headers", "origin, content-type, accept, authorization");
        cres.getHeaders().add("Access-Control-Allow-Credentials", "true");
        cres.getHeaders().add("Access-Control-Allow-Methods", "GET, POST, PUT, DELETE, OPTIONS, HEAD");
        cres.getHeaders().add("Access-Control-Max-Age", "1209600");
    }

}

但是后来我得到了以下错误:

The 'Access-Control-Allow-Origin' header contains multiple values 'http://localhost:8888, *', but only one is allowed. Origin 'http://localhost:8888' is therefore not allowed access.

我不太明白这个错误是什么意思以及如何修复它？谢谢!

localhost:8888 是在 Gulp 中定义的。

Answer 1

“Access-Control-Allow-Origin” header 必须为“http://localhost:8888” '

线程中的第二个答案对此进行了很好的解释:
Why is jquery's .ajax() method not sending my session cookie?