GWT RPC响应头

有没有办法在RPC响应中读取GWT客户端收到的头信息？

Response header
Server                 Apache-Coyote/1.1
Set-Cookie             JSESSIONID=3379B1E57BEB2FE227EDC1F57BF550ED; Path=/GWT
Content-Encoding       gzip
Content-Disposition    attachment
Content-Type           application/json;charset=utf-8
Content-Length         209
Date                   Fri, 05 Nov 2010 13:07:31 GMT

我特别感兴趣的是确定客户端何时在其标头上收到Set-Cookie属性.

有没有办法在GWT上做到这一点？

我发现了

com.google.gwt.user.client.rpc.impl.RequestCallbackAdapter<T>

存在方法

public void onResponseReceived(Request request, Response response) { ... }

在参数Response似乎有我需要的信息.这是存在某种方式来获得,而不“绞乱”GWT编译器代码？

谢谢

JuDaC

您可以尝试覆盖RpcRequestBuilder.doSetCallback方法并强制您的服务使用它：

MyServiceAsync service = GWT.create(MyService.clas);
((ServiceDefTarget) service).setRpcRequestBuilder(new RpcRequestBuilder() {
    @Override
    protected void doSetCallback(RequestBuilder rb, final RequestCallback callback) {
        super.doSetCallback(rb, new RequestCallback() {

            @Override
            public void onResponseReceived(Request request, Response response) {
                String headerValue = response.getHeader("my-header");
                // do sth...
                callback.onResponseReceived(request, response);
            }

            @Override
            public void onError(Request request, Throwable exception) {
                callback.onError(request, exception);
            }
        });
    }
});

受到http://stuffthathappens.com/blog/2009/12/22/custom-http-headers-with-gwt-rpc/的启发