使用org.apache.wink RequestHandler记录REST请求

我需要记录REST请求和响应消息，所以我使用了ApacheWingRequestHandler。我可以用ResponseHandler得到响应。但无法在处理程序类中获取请求详细信息。你能帮我一下吗

public class RESTRequestHandler implements org.apache.wink.server.handlers.RequestHandler {

@Override
    public void handleRequest(MessageContext context, HandlersChain handlerChain)
            throws Throwable {
        //Unable to fetch the request details..Issue is here
        handlerChain.doChain(context);
            }

}

public class RESTResponseHandler implements org.apache.wink.server.handlers.ResponseHandler {
@Override
    public void handleResponse(MessageContext context, HandlersChain handlerChain)
            throws Throwable {
//Able to get the response details using the below code
   SampleResponseObject object=(SampleRespObject) context.getResponseEntity();
            }
}

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获取请求时出现了什么错误？