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See:
Description
| Interface Summary | |
| Filter | A filter is an object that performs 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 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 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 receive notifications of changes to the attribute list on the servlet context of a web application. |
| ServletContextListener | Implementations of this interface receive 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. |
| ServletRequestAttributeListener | A ServletRequestAttributeListener can be implemented by the developer interested in being notified of request attribute changes. |
| ServletRequestListener | A ServletRequestListener can be implemented by the developer interested in being notified of requests coming in and out of scope in a web component. |
| ServletResponse | Defines an object to assist a servlet in sending a response to the client. |
| SingleThreadModel | Deprecated. As of Java Servlet API 2.4, with no direct replacement. |
| 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. |
| ServletRequestAttributeEvent | This is the event class for notifications of changes to the attributes of ServletRequest in an application. |
| ServletRequestEvent | Events of this kind indicate lifecycle events for a ServletRequest. |
| 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. |
This chapter describes the javax.servlet package. The chapter includes content that is generated automatically from javadoc embedded in the actual Java classes and interfaces. This allows the creation of a single, authoritative, specification document.
The javax.servlet package contains a number of classes and interfaces that describe and define the contracts between a servlet class and the runtime environment provided for an instance of such a class by a conforming servlet container.
The Servlet interface is the central abstraction of the servlet API. All servlets implement this interface either directly, or more commonly, by extending a class that implements the interface. The two classes in the servlet API that implement the Servlet interface are GenericServlet and HttpServlet . For most purposes, developers will extend HttpServlet to implement their servlets while implementing web applications employing the HTTP protocol.
The basic Servlet interface defines a service method for handling client requests. This method is called for each request that the servlet container routes to an instance of a servlet.
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