在ContainerResponseFilter的获取响应（JAX-RS 2） [英] Getting Response in ContainerResponseFilter's (JAX-RS 2)

问题描述

我尝试移除此CORS过滤器到JAX-RS 2。

I am trying to port this CORS filter to JAX-RS 2.

但是，我看不到如何获取 Response 对象（如旧代码中的）从 ContainerResponseContext 我得到传递的覆盖方法< a href =https://jersey.java.net/apidocs/latest/jersey/javax/ws/rs/container/ContainerResponseFilter.html =nofollow> ContainerResponseFilter 。

However, I do not see how to get the Response object (as in the old code) from the ContainerResponseContext I get passed in the overridden method of ContainerResponseFilter.

如果有一个更优雅的方式来做CORS与JAX-RS 2，这当然是首选。提前感谢。

If there is a more elegant way to do CORS with JAX-RS 2, that would be preferrable of course. Thanks in advance.

推荐答案

可直接访问 ContainerResponseContext ：

@Provider
public class ResponseCorsFilter implements ContainerResponseFilter{

    @Override
    public void filter(ContainerRequestContext requestContext,
            ContainerResponseContext responseContext) throws IOException {
           responseContext.getHeaders()
                .putSingle("Access-Control-Allow-Origin","*");
           responseContext.getHeaders()
                 .putSingle("Access-Control-Allow-Methods",
                     "GET, POST, PUT, DELETE");
           List<String> reqHead=requestContext.getHeaders()
                     .get("Access-Control-Request-Headers");
           if(null != reqHead){
                responseContext.getHeaders()
                   .put("Access-Control-Allow-Headers", 
                        new ArrayList<Object>(reqHead));
           }
    }

}

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