Defines a generic, protocol-independent
servlet.
Returns the object bound with the specified name in this session, or
null if no object is bound under the name.
Returns the servlet container attribute with the given name,
or null if there is no attribute by that name.
Returns the value of the named attribute as an Object,
or null if no attribute of the given name exists.
The default behavior of this method is to call getAttribute(String name)
on the wrapped request object.
Returns an Enumeration of String objects
containing the names of all the objects bound to this session.
Returns an Enumeration containing the
attribute names available
within this servlet context.
Returns an Enumeration containing the
names of the attributes available to this request.
The default behavior of this method is to return getAttributeNames()
on the wrapped request object.
Returns the name of the authentication scheme used to protect
the servlet.
The default behavior of this method is to return getAuthType()
on the wrapped request object.
Returns the actual buffer size used for the response.
The default behavior of this method is to return getBufferSize()
on the wrapped response object.
Returns the name of the character encoding used in the body of this
request.
The default behavior of this method is to return getCharacterEncoding()
on the wrapped request object.
Returns the name of the character encoding (MIME charset)
used for the body sent in this response.
The default behavior of this method is to return getCharacterEncoding()
on the wrapped response object.
Returns the comment describing the purpose of this cookie, or
null if the cookie has no comment.
Returns the length, in bytes, of the request body
and made available by the input stream, or -1 if the
length is not known.
The default behavior of this method is to return getContentLength()
on the wrapped request object.
Returns the MIME type of the body of the request, or
null if the type is not known.
The default behavior of this method is to return getContentType()
on the wrapped request object.
Returns the content type used for the MIME body
sent in this response.
The default behavior of this method is to return getContentType()
on the wrapped response object.
Returns a ServletContext object that
corresponds to a specified URL on the server.
Returns the portion of the request URI that indicates the context
of the request.
The default behavior of this method is to return getContextPath()
on the wrapped request object.
Returns an array containing all of the Cookie
objects the client sent with this request.
The default behavior of this method is to return getCookies()
on the wrapped request object.
Returns the time when this session was created, measured
in milliseconds since midnight January 1, 1970 GMT.
Returns the value of the specified request header
as a long value that represents a
Date object.
The default behavior of this method is to return getDateHeader(String name)
on the wrapped request object.
Returns the domain name set for this cookie.
Returns the filter-name of this filter as defined in the deployment descriptor.
Returns the value of the specified request header
as a String.
The default behavior of this method is to return getHeader(String name)
on the wrapped request object.
Returns an enumeration of all the header names
this request contains.
The default behavior of this method is to return getHeaderNames()
on the wrapped request object.
Returns all the values of the specified request header
as an Enumeration of String objects.
The default behavior of this method is to return getHeaders(String name)
on the wrapped request object.
Returns a string containing the unique identifier assigned
to this session.
Returns a String containing the value of the
named initialization parameter, or null if
the parameter does not exist.
Returns a String containing the value of the named
initialization parameter, or null if the parameter does
not exist.
Returns a String containing the value of the
named initialization parameter, or null if
the parameter does not exist.
Returns a String containing the value of the named
context-wide initialization parameter, or null if the
parameter does not exist.
Returns the names of the filter's initialization parameters
as an Enumeration of String objects,
or an empty Enumeration if the filter has
no initialization parameters.
Returns the names of the servlet's initialization parameters
as an Enumeration of String objects,
or an empty Enumeration if the servlet has no
initialization parameters.
Returns the names of the servlet's initialization parameters
as an Enumeration of String objects,
or an empty Enumeration if the servlet has
no initialization parameters.
Returns the names of the context's initialization parameters as an
Enumeration of String objects, or an
empty Enumeration if the context has no initialization
parameters.
The default behavior of this method is to return getInputStream()
on the wrapped request object.
Returns the value of the specified request header
as an int.
The default behavior of this method is to return getIntHeader(String name)
on the wrapped request object.
Returns the last time the client sent a request associated with
this session, as the number of milliseconds since midnight
January 1, 1970 GMT, and marked by the time the container received the request.
Returns the time the HttpServletRequest
object was last modified,
in milliseconds since midnight January 1, 1970 GMT.
Returns the Internet Protocol (IP) address of the interface on
which the request was received.
The default behavior of this method is to return
getLocalAddr() on the wrapped request object.
Returns the preferred Locale that the client will
accept content in, based on the Accept-Language header.
The default behavior of this method is to return getLocale()
on the wrapped request object.
The default behavior of this method is to return getLocale()
on the wrapped response object.
Returns an Enumeration of Locale objects
indicating, in decreasing order starting with the preferred locale, the
locales that are acceptable to the client based on the Accept-Language
header.
The default behavior of this method is to return getLocales()
on the wrapped request object.
Returns the host name of the Internet Protocol (IP) interface on
which the request was received.
The default behavior of this method is to return
getLocalName() on the wrapped request object.
Returns the Internet Protocol (IP) port number of the interface
on which the request was received.
The default behavior of this method is to return
getLocalPort() on the wrapped request object.
Returns the major version of the Java Servlet API that this
servlet container supports.
Returns the maximum age of the cookie, specified in seconds,
By default, -1 indicating the cookie will persist
until browser shutdown.
Returns the maximum time interval, in seconds, that
the servlet container will keep this session open between
client accesses.
Returns the name of the HTTP method with which this
request was made, for example, GET, POST, or PUT.
The default behavior of this method is to return getMethod()
on the wrapped request object.
Returns the MIME type of the specified file, or null if
the MIME type is not known.
Returns the minor version of the Servlet API that this
servlet container supports.
Returns the name of the cookie.
Returns the name with which the attribute is bound to or
unbound from the session.
Return the name of the attribute that changed on the ServletContext.
Return the name of the attribute that changed on the ServletRequest.
The default behavior of this method is to return getOutputStream()
on the wrapped response object.
Returns the value of a request parameter as a String,
or null if the parameter does not exist.
The default behavior of this method is to return getParameter(String name)
on the wrapped request object.
Returns a java.util.Map of the parameters of this request.
The default behavior of this method is to return getParameterMap()
on the wrapped request object.
Returns an Enumeration of String
objects containing the names of the parameters contained
in this request.
The default behavior of this method is to return getParameterNames()
on the wrapped request object.
Returns an array of String objects containing
all of the values the given request parameter has, or
null if the parameter does not exist.
The default behavior of this method is to return getParameterValues(String name)
on the wrapped request object.
Returns the path on the server
to which the browser returns this cookie.
Returns any extra path information associated with
the URL the client sent when it made this request.
The default behavior of this method is to return getPathInfo()
on the wrapped request object.
Returns any extra path information after the servlet name
but before the query string, and translates it to a real
path.
The default behavior of this method is to return getPathTranslated()
on the wrapped request object.
Returns the name and version of the protocol the request uses
in the form protocol/majorVersion.minorVersion, for
example, HTTP/1.1.
The default behavior of this method is to return getProtocol()
on the wrapped request object.
Returns the query string that is contained in the request
URL after the path.
The default behavior of this method is to return getQueryString()
on the wrapped request object.
Retrieves the body of the request as character data using
a BufferedReader.
The default behavior of this method is to return getReader()
on the wrapped request object.
Returns a String containing the real path
for a given virtual path.
The default behavior of this method is to return getRealPath(String path)
on the wrapped request object.
Returns the Internet Protocol (IP) address of the client
or last proxy that sent the request.
The default behavior of this method is to return getRemoteAddr()
on the wrapped request object.
Returns the fully qualified name of the client
or the last proxy that sent the request.
The default behavior of this method is to return getRemoteHost()
on the wrapped request object.
Returns the Internet Protocol (IP) source port of the client
or last proxy that sent the request.
The default behavior of this method is to return
getRemotePort() on the wrapped request object.
Returns the login of the user making this request, if the
user has been authenticated, or null if the user
has not been authenticated.
The default behavior of this method is to return getRemoteUser()
on the wrapped request object.
Return the wrapped request object.
Returns a
RequestDispatcher object that acts
as a wrapper for the resource located at the given path.
Returns a
RequestDispatcher object that acts as a wrapper for
the resource located at the given path.
The default behavior of this method is to return getRequestDispatcher(String path)
on the wrapped request object.
Returns the session ID specified by the client.
The default behavior of this method is to return getRequestedSessionId()
on the wrapped request object.
Returns the part of this request's URL from the protocol
name up to the query string in the first line of the HTTP request.
The default behavior of this method is to return getRequestURI()
on the wrapped request object.
Reconstructs the URL the client used to make the request.
The default behavior of this method is to return getRequestURL()
on the wrapped request object.
Reconstructs the URL the client used to make the request,
using information in the HttpServletRequest object.
Returns a URL to the resource that is mapped to a specified
path.
Returns the resource located at the named path as
an InputStream object.
Returns a directory-like listing of all the paths to resources within the web application whose longest sub-path
matches the supplied path argument.
Return the wrapped ServletResponse object.
Returns the exception that caused this servlet exception.
Returns the name of the scheme used to make this request,
for example,
http, https, or ftp.
The default behavior of this method is to return getScheme()
on the wrapped request object.
Returns true if the browser is sending cookies
only over a secure protocol, or false if the
browser can send cookies using any protocol.
Returns the name and version of the servlet container on which
the servlet is running.
Returns the host name of the server to which the request was sent.
The default behavior of this method is to return getServerName()
on the wrapped request object.
Returns the port number to which the request was sent.
The default behavior of this method is to return getServerPort()
on the wrapped request object.
Returns a
ServletConfig object, which contains
initialization and startup parameters for this servlet.
Returns a reference to the
ServletContext in which the caller
is executing.
Returns a reference to the
ServletContext in which this servlet
is running.
Returns the ServletContext to which this session belongs.
Returns a reference to the
ServletContext in which the caller
is executing.
Return the ServletContext that changed.
Returns the ServletContext of this web application.
Returns the name of this web application corresponding to this ServletContext as specified in the deployment
descriptor for this web application by the display-name element.
Returns information about the servlet, such as
author, version, and copyright.
Returns information about the servlet, such
as author, version, and copyright.
Returns the name of this servlet instance.
Returns the name of this servlet instance.
Returns the part of this request's URL that calls
the servlet.
The default behavior of this method is to return getServletPath()
on the wrapped request object.
Returns the ServletRequest that is changing.
Returns the current session associated with this request,
or if the request does not have a session, creates one.
The default behavior of this method is to return getSession()
on the wrapped request object.
Return the session that changed.
Return the session that changed.
Returns the current HttpSession
associated with this request or, if there is no
current session and create is true, returns
a new session.
The default behavior of this method is to return getSession(boolean create)
on the wrapped request object.
Returns the number of seconds the servlet expects to
be temporarily unavailable.
Returns a java.security.Principal object containing
the name of the current authenticated user.
The default behavior of this method is to return getUserPrincipal()
on the wrapped request object.
Returns the value of the cookie.
Returns the value of the attribute that has been added, removed or replaced.
Returns the value of the attribute that has been added, removed, or replaced.
Returns the value of the attribute that has been added, removed or
replaced.
Returns the version of the protocol this cookie complies
with.
Returns a PrintWriter object that
can send character text to the client.
The default behavior of this method is to return getWriter()
on the wrapped response object.
Status code (202) indicating that a request was accepted for
processing, but was not completed.
Status code (502) indicating that the HTTP server received an
invalid response from a server it consulted when acting as a
proxy or gateway.
Status code (400) indicating the request sent by the client was
syntactically incorrect.
Status code (409) indicating that the request could not be
completed due to a conflict with the current state of the
resource.
Status code (100) indicating the client can continue.
Status code (201) indicating the request succeeded and created
a new resource on the server.
Status code (417) indicating that the server could not meet the
expectation given in the Expect request header.
Status code (403) indicating the server understood the request
but refused to fulfill it.
Status code (302) indicating that the resource reside
temporarily under a different URI.
Status code (504) indicating that the server did not receive
a timely response from the upstream server while acting as
a gateway or proxy.
Status code (410) indicating that the resource is no longer
available at the server and no forwarding address is known.
Status code (505) indicating that the server does not support
or refuses to support the HTTP protocol version that was used
in the request message.
Status code (500) indicating an error inside the HTTP server
which prevented it from fulfilling the request.
Status code (411) indicating that the request cannot be handled
without a defined Content-Length.
Status code (405) indicating that the method specified in the
Request-Line is not allowed for the resource
identified by the Request-URI.
Status code (301) indicating that the resource has permanently
moved to a new location, and that future references should use a
new URI with their requests.
Status code (302) indicating that the resource has temporarily
moved to another location, but that future references should
still use the original URI to access the resource.
Status code (300) indicating that the requested resource
corresponds to any one of a set of representations, each with
its own specific location.
Status code (204) indicating that the request succeeded but that
there was no new information to return.
Status code (203) indicating that the meta information presented
by the client did not originate from the server.
Status code (406) indicating that the resource identified by the
request is only capable of generating response entities which have
content characteristics not acceptable according to the accept
headers sent in the request.
Status code (404) indicating that the requested resource is not
available.
Status code (501) indicating the HTTP server does not support
the functionality needed to fulfill the request.
Status code (304) indicating that a conditional GET operation
found that the resource was available and not modified.
Status code (200) indicating the request succeeded normally.
Status code (206) indicating that the server has fulfilled
the partial GET request for the resource.
Status code (402) reserved for future use.
Status code (412) indicating that the precondition given in one
or more of the request-header fields evaluated to false when it
was tested on the server.
Status code (407) indicating that the client MUST first
authenticate itself with the proxy.
Status code (413) indicating that the server is refusing to process
the request because the request entity is larger than the server is
willing or able to process.
Status code (408) indicating that the client did not produce a
request within the time that the server was prepared to wait.
Status code (414) indicating that the server is refusing to service
the request because the Request-URI is longer
than the server is willing to interpret.
Status code (416) indicating that the server cannot serve the
requested byte range.
Status code (205) indicating that the agent SHOULD reset
the document view which caused the request to be sent.
Status code (303) indicating that the response to the request
can be found under a different URI.
Status code (503) indicating that the HTTP server is
temporarily overloaded, and unable to handle the request.
Status code (101) indicating the server is switching protocols
according to Upgrade header.
Status code (307) indicating that the requested resource
resides temporarily under a different URI.
Status code (401) indicating that the request requires HTTP
authentication.
Status code (415) indicating that the server is refusing to service
the request because the entity of the request is in a format not
supported by the requested resource for the requested method.
Status code (305) indicating that the requested resource
MUST be accessed through the proxy given by the
Location field.
Sends an error response to the client using the specified status
code and clearing the buffer.
The default behavior of this method is to call sendError(int sc)
on the wrapped response object.
Sends an error response to the client using the specified
status.
The default behavior of this method is to call sendError(int sc, String msg)
on the wrapped response object.
Sends a temporary redirect response to the client using the
specified redirect location URL.
The default behavior of this method is to return sendRedirect(String location)
on the wrapped response object.
Receives standard HTTP requests from the public
service method and dispatches
them to the doXXX methods defined in
this class.
Called by the servlet container to allow the servlet to respond to
a request.
Dispatches client requests to the protected
service method.
Called by the servlet container to allow the servlet to respond to
a request.
Defines methods that all servlets must implement.
A servlet configuration object used by a servlet container
to pass information to a servlet during initialization.
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.
This is the event class for notifications about changes to the attributes of the
servlet context of a web application.
Construct a ServletContextAttributeEvent from the given context for the
given attribute name and attribute value.
Implementations of this interface receive notifications of
changes to the attribute list on the servlet context of a web application.
This is the event class for notifications about changes to
the servlet context of a web application.
Construct a ServletContextEvent from the given context.
Implementations of this interface receive notifications about
changes to the servlet context of the web application they are
part of.
Defines a general exception a servlet can throw when it
encounters difficulty.
Constructs a new servlet exception.
Constructs a new servlet exception with the
specified message.
Constructs a new servlet exception when the servlet
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation, including a description message.
Constructs a new servlet exception when the servlet
needs to throw an exception and include a message
about the "root cause" exception that interfered with its
normal operation.
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.
Does nothing, because this is an abstract class.
Provides an output stream for sending binary data to the
client.
Does nothing, because this is an abstract class.
Defines an object to provide client request information to a servlet.
This is the event class for notifications of changes to the
attributes of the servlet request in an application.
Construct a ServletRequestAttributeEvent giving the servlet context
of this web application, the ServletRequest whose attributes are
changing and the name and value of the attribute.
A ServletRequestAttributeListener can be implemented by the
developer interested in being notified of request attribute
changes.
Events of this kind indicate lifecycle
events for a ServletRequest.
Construct a ServletRequestEvent for the given ServletContext
and ServletRequest.
A ServletRequestListener can be implemented by the developer
interested in being notified of requests coming in and out of
scope in a web component.
Provides a convenient implementation of the ServletRequest interface that
can be subclassed by developers wishing to adapt the request to a Servlet.
Creates a ServletRequest adaptor wrapping the given request object.
Defines an object to assist a servlet in sending a response to the client.
Provides a convenient implementation of the ServletResponse interface that
can be subclassed by developers wishing to adapt the response from a Servlet.
Creates a ServletResponse adaptor wrapping the given response object.
Notification that a session was created.
Notification that a session is about to be invalidated.
Notification that the session has just been activated.
Notification that the session is about to be passivated.
Binds an object to this session, using the name specified.
Binds an object to a given attribute name in this servlet context.
Stores an attribute in this request.
The default behavior of this method is to return setAttribute(String name, Object o)
on the wrapped request object.
Sets the preferred buffer size for the body of the response.
The default behavior of this method is to call setBufferSize(int size)
on the wrapped response object.
Overrides the name of the character encoding used in the body of this
request.
The default behavior of this method is to set the character encoding
on the wrapped request object.
Sets the character encoding (MIME charset) of the response
being sent to the client, for example, to UTF-8.
The default behavior of this method is to call setCharacterEncoding(String charset)
on the wrapped response object.
Specifies a comment that describes a cookie's purpose.
Sets the length of the content body in the response
In HTTP servlets, this method sets the HTTP Content-Length header.
The default behavior of this method is to call setContentLength(int len)
on the wrapped response object.
Sets the content type of the response being sent to
the client, if the response has not been committed yet.
The default behavior of this method is to call setContentType(String type)
on the wrapped response object.
Sets a response header with the given name and
date-value.
The default behavior of this method is to call setDateHeader(String name, long date)
on the wrapped response object.
Specifies the domain within which this cookie should be presented.
Sets a response header with the given name and value.
The default behavior of this method is to return setHeader(String name, String value)
on the wrapped response object.
Sets a response header with the given name and
integer value.
The default behavior of this method is to call setIntHeader(String name, int value)
on the wrapped response object.
Sets the locale of the response, if the response has not been
committed yet.
The default behavior of this method is to call setLocale(Locale loc)
on the wrapped response object.
Sets the maximum age of the cookie in seconds.
Specifies the time, in seconds, between client requests before the
servlet container will invalidate this session.
Specifies a path for the cookie
to which the client should return the cookie.
Sets the request object being wrapped.
Sets the response being wrapped.
Indicates to the browser whether the cookie should only be sent
using a secure protocol, such as HTTPS or SSL.
Sets the status code for this response.
The default behavior of this method is to call setStatus(int sc)
on the wrapped response object.
The default behavior of this method is to call setStatus(int sc, String sm)
on the wrapped response object.
Assigns a new value to a cookie after the cookie is created.
Sets the version of the cookie protocol this cookie complies
with.
Ensures that servlets handle
only one request at a time.