在ContainerResponseFilter的（JAX-RS 2）獲取響應

Question

我試圖端口this CORS filter到JAX-RS 2.

不過，我看不出如何讓Response對象（如舊代碼）從ContainerResponseContext我通過了ContainerResponseFilter的覆蓋方法。

如果有一種更優雅的方式來使用JAX-RS 2來執行CORS，那當然會更好。提前致謝。

Answer 1

THRE的反應是直接訪問爲的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)); 
      } 
    } 

}