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Interface Acme.Serve.servlet.Servlet

public interface Servlet

Servlets are little Java programs that can be hooked into a server and run in response to requests.

Servlet has to be an interface so that things that must inherit from another object, such as RMI, can also be Servlets. However, most of the time a Servlet will not need to be anything else, and it will be somewhat more convenient to extend GenericServlet.

This is taken from JavaSoft's Servlet API documentation.

Fetch the software.
Fetch the entire Acme package.

See Also:

GenericServlet, HttpServlet, SampleServlet, Serve

destroy()

Destroys the servlet and cleans up whatever resources are being held.

getServletConfig()

Returns a servlet config object, which contains any initialization parameters and startup configuration for this servlet.

getServletInfo()

Returns a string containing information about the author, version, and copyright of the servlet.

init(ServletConfig)

Initializes the servlet.

service(ServletRequest, ServletResponse)

Services a single request from the client.

 public abstract void init(ServletConfig config) throws ServletException

Initializes the servlet. This is called by the system when the servlet is first loaded.

Parameters:

config - servlet initialization information

Throws: ServletException

when an exception has occurred

 public abstract ServletConfig getServletConfig()

Returns a servlet config object, which contains any initialization parameters and startup configuration for this servlet.

 public abstract void service(ServletRequest req,
                              ServletResponse res) throws ServletException, IOException

Services a single request from the client.

Note that the server only creates a single instance of your Servlet subclass, and calls the service() method of that one instance multiple times, possibly at the same time in different threads. This is somewhat unusual in the Java world. The implication is that any instance variables in your class behave more like class variables - they are shared among multiple concurrent calls. So, be careful.

Parameters:

req - the servlet request

req - the servlet response

Throws: ServletException

when a servlet exception has occurred

Throws: IOException

when an I/O exception has occurred

 public abstract String getServletInfo()

Returns a string containing information about the author, version, and copyright of the servlet.

 public abstract void destroy()

Destroys the servlet and cleans up whatever resources are being held. This is called by the system when the servlet is being destroyed.

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