Servlet::Servlet - servlet interface
my $config = $servlet->getServletConfig();
A servlet is a Perl component that runs within a servlet container. Servlets receive and respond to requests from Web clients, usually across HTTP.
To implement this interface, you can write a generic servlet that extends Servlet::GenericServlet or an HTTP servlet that extends Servlet::Http::HttpServlet.
This interface deinfes methods to initialize a servlet, to service requests, and to remove a servlet from the server. These are known as life-cycle methods and are called in the following sequence:
In addition to the life-cycle methods, this interface provides the
getServletConfig method, which the servlet can use to get any startup
getServletInfo(), which allows the servlet to
return basic information about itself, such as author, version and
service()method have exited or after a timeout period has passed. After the servlet container calls this method, it will not call
service()again on this servlet.
This method gives the servlet an opportunity to clean up any resources that are being held (for example, memory, file handles, threads) and make sure that any persistent state is synchronized with the servlet's current state in memory.
Implementations of this interface are responsible for storing the object so that this method can return it. The Servlet::GenericServlet class, which implements this interface, already does this.
The string that this method returns should be plain text and not markup of any kind (such as HTML, XML etc).
The servlet container calls the
init() method exactly once after
instantiating the servlet. The
init() method must complete
successfully before the servlet can receive any requests.
The servlet container cannot place the servlet into service if
This method is only called after the servlet's
init() method has
Servlets may run inside multithreaded servlet containers that can handle multiple requests concurrently. Developers must be aware to synchronize ac cess to any shared resources such as files, network connections, and as well the servlet's class and instance variables.
the Servlet::GenericServlet manpage, the Servlet::ServletConfig manpage, the Servlet::ServletException manpage, the Servlet::ServletRequest manpage, the Servlet::ServletResponse manpage
Brian Moseley, email@example.com