4 Being a Servlet: request AND response Servlets live to service clients. A servlet’s job is to take a client’s request and send back a response. The request.

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Presentation transcript:

4 Being a Servlet: request AND response Servlets live to service clients. A servlet’s job is to take a client’s request and send back a response. The request might be simple: “get me the Welcome page.” Or it might be complex: “Complete my shopping cart check-out.” The request carries crucial data, and your servlet code has to know how to fi nd it and how to use it. The response carries the info the browser needs to render a page (or download bytes), and your servlet code has to know how to send it. Or not... your servlet can decide to pass the request to something else (another page, servlet, or JSP) instead.

Objects of the Chapter

More about the servlet’s lift

Lifecycle and Methods