servlet

JavaServlet


Package javax.servlet

Interface Summary
Filter A filter is an object than perform filtering tasks on either the request to a resource (a servlet or static content), or on the response from a resource, or both.

Filters perform filtering in the doFilter method.
FilterChain A FilterChain is an object provided by the servlet container to the developer giving a view into the invocation chain of a filtered request for a resource.
FilterConfig A filter configuration object used by a servlet container used to pass information to a filter during initialization.
RequestDispatcher Defines an object that receives requests from the client and sends them to any resource (such as a servlet, HTML file, or JSP file) on the server.
Servlet Defines methods that all servlets must implement.
ServletConfig A servlet configuration object used by a servlet container used to pass information to a servlet during initialization.
ServletContext Defines a set of methods that a servlet uses to communicate with its servlet container, for example, to get the MIME type of a file, dispatch requests, or write to a log file.
ServletContextAttributeListener Implementations of this interface recieve notifications of changes to the attribute list on the servlet context of a web application.
ServletContextListener Implementations of this interface recieve notifications about changes to the servlet context of the web application they are part of.
ServletRequest Defines an object to provide client request information to a servlet.
ServletResponse Defines an object to assist a servlet in sending a response to the client.
SingleThreadModel Ensures that servlets handle only one request at a time.
 

Class Summary
GenericServlet Defines a generic, protocol-independent servlet.
ServletContextAttributeEvent This is the event class for notifications about changes to the attributes of the servlet context of a web application.
ServletContextEvent This is the event class for notifications about changes to the servlet context of a web application.
ServletInputStream Provides an input stream for reading binary data from a client request, including an efficient readLine method for reading data one line at a time.
ServletOutputStream Provides an output stream for sending binary data to the client.
ServletRequestWrapper Provides a convenient implementation of the ServletRequest interface that can be subclassed by developers wishing to adapt the request to a Servlet.
ServletResponseWrapper Provides a convenient implementation of the ServletResponse interface that can be subclassed by developers wishing to adapt the response from a Servlet.
 

Exception Summary
ServletException Defines a general exception a servlet can throw when it encounters difficulty.
UnavailableException Defines an exception that a servlet or filter throws to indicate that it is permanently or temporarily unavailable.