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• javax.servlet.http: Javadoc index of package javax.servlet.http.


Package Samples:

• javax.servlet.http: 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.  

Classes:

• HttpSession: Provides a way to identify a user across more than one page request or visit to a Web site and to store information about that user. The servlet container uses this interface to create a session between an HTTP client and an HTTP server. The session persists for a specified time period, across more than one connection or page request from the user. A session usually corresponds to one user, who may visit a site many times. The server can maintain a session in many ways such as using cookies or rewriting URLs. This interface allows servlets to View and manipulate information about a session, such ...
• Cookie: Creates a cookie, a small amount of information sent by a servlet to a Web browser, saved by the browser, and later sent back to the server. A cookie's value can uniquely identify a client, so cookies are commonly used for session management. A cookie has a name, a single value, and optional attributes such as a comment, path and domain qualifiers, a maximum age, and a version number. Some Web browsers have bugs in how they handle the optional attributes, so use them sparingly to improve the interoperability of your servlets. The servlet sends cookies to the browser by using the HttpServletResponse.addCookie(javax.servlet.http.Cookie) ...
• HttpServlet: Provides an abstract class to be subclassed to create an HTTP servlet suitable for a Web site. A subclass of HttpServlet must override at least one method, usually one of these: doGet , if the servlet supports HTTP GET requests doPost , for HTTP POST requests doPut , for HTTP PUT requests doDelete , for HTTP DELETE requests init and destroy , to manage resources that are held for the life of the servlet getServletInfo , which the servlet uses to provide information about itself There's almost no reason to override the service method. service handles standard HTTP requests by dispatching them to ...
• HttpSessionBindingEvent: Events of this type are either sent to an object that implements HttpSessionBindingListener when it is bound or unbound from a session, or to a HttpSessionAttributeListener that has been configured in the deployment descriptor when any attribute is bound, unbound or replaced in a session. The session binds the object by a call to HttpSession.setAttribute and unbinds the object by a call to HttpSession.removeAttribute .
• HttpServletResponse: Extends the javax.servlet.ServletResponse interface to provide HTTP-specific functionality in sending a response. For example, it has methods to access HTTP headers and cookies. The servlet container creates an HttpServletResponse object and passes it as an argument to the servlet's service methods ( doGet , doPost , etc).
• HttpSessionBindingListener: Causes an object to be notified when it is bound to or unbound from a session. The object is notified by an HttpSessionBindingEvent object. This may be as a result of a servlet programmer explicitly unbinding an attribute from a session, due to a session being invalidated, or due to a session timing out.
• HttpServletRequest: Extends the javax.servlet.ServletRequest interface to provide request information for HTTP servlets. The servlet container creates an HttpServletRequest object and passes it as an argument to the servlet's service methods ( doGet , doPost , etc).
• HttpSessionActivationListener: Objects that are bound to a session may listen to container events notifying them that sessions will be passivated and that session will be activated. A container that migrates session between VMs or persists sessions is required to notify all attributes bound to sessions implementing HttpSessionActivationListener.
• HttpServletResponseWrapper: Provides a convenient implementation of the HttpServletResponse interface that can be subclassed by developers wishing to adapt the response from a Servlet. This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped response object.
• HttpServletRequestWrapper: Provides a convenient implementation of the HttpServletRequest interface that can be subclassed by developers wishing to adapt the request to a Servlet. This class implements the Wrapper or Decorator pattern. Methods default to calling through to the wrapped request object.
• HttpSessionListener: Implementations of this interface are notified of changes to the list of active sessions in a web application. To receive notification events, the implementation class must be configured in the deployment descriptor for the web application.
• HttpSessionAttributeListener: This listener interface can be implemented in order to get notifications of changes to the attribute lists of sessions within this web application.
• HttpSessionContext: As of Java(tm) Servlet API 2.1 for security reasons, with no replacement. This interface will be removed in a future version of this API.
• HttpUtils: As of Java(tm) Servlet API 2.3. These methods were only useful with the default encoding and have been moved to the request interfaces.
• HttpSessionEvent: This is the class representing event notifications for changes to sessions within a web application.
• NoBodyResponse
• NoBodyOutputStream

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