Intercept Web Traffic in Java EE Web Apps

摘要

Today the Web is dominated by the request/response architecture, wherein, a client sends an HTTP protocol request for some action and the server, after carrying out that action, responds with the HTTP response to the client. In this series, we'll use the Interceptor Filter and Decorator design patterns to intercept the incoming user requests and outgoing responses. The Intercepting Filter pattern can be classified as a presentation tier pattern because it deals with requests from the presentation tier. In this part, we'll leverage from the Interceptor Filter pattern and then club it with the Decorator (Wrapper) pattern in the second part.