The Intercepting filter pattern wraps existing application resources with a filter that intercepts the reception of a request and the transmission of a response.
拦截过滤器模式用一个过滤器封装了已有应用资源，这个过滤器拦截了请求的接收及响应的传递。
2
The originating System Interface receives the request and sends a transmission response back to the target System Interface announcing whether or not it has successfully received the data.
原始系统接口接收请求，并向目标系统接口发送一个传输响应，以告知是否成功接收到相应数据。
3
The System Interface receives the request and provides a transmission response back to the Mediator announcing whether or not it has successfully received the data.