Class HttpContext

java.lang.Object

com.sun.net.httpserver.HttpContext

public abstract class HttpContext
extends Object

HttpContext represents a mapping between the root URI path of an application to a HttpHandler which is invoked to handle requests destined for that path on the associated HttpServer or HttpsServer.

HttpContext instances are created by the create methods in HttpServer and HttpsServer.

A chain of Filter objects can be added to a HttpContext. All exchanges processed by the context can be pre- and post-processed by each Filter in the chain.

Since:

1.6

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	HttpContext()	Constructor for subclasses to call.

Method Summary

Modifier and Type	Method	Description
abstract Map<String,Object>	getAttributes()	Returns a mutable Map, which can be used to pass configuration and other data to Filter modules and to the context's exchange handler.
abstract Authenticator	getAuthenticator()	Returns the currently set Authenticator for this context if one exists.
abstract List<Filter>	getFilters()	Returns this context's List of filters.
abstract HttpHandler	getHandler()	Returns the handler for this context.
abstract String	getPath()	Returns the path this context was created with.
abstract HttpServer	getServer()	Returns the server this context was created with.
abstract Authenticator	setAuthenticator(Authenticator auth)	Sets the Authenticator for this HttpContext.
abstract void	setHandler(HttpHandler handler)	Sets the handler for this context, if not already set.

Methods declared in class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Modifier and Type	Method	Description
protected Object	clone()	Answers a new instance of the same class as the receiver, whose slots have been filled in with the values in the slots of the receiver.
boolean	equals(Object o)	Compares the argument to the receiver, and answers true if they represent the same object using a class specific comparison.
protected void	finalize()	Deprecated, for removal: This API element is subject to removal in a future version. May cause performance issues, deadlocks and hangs.
final Class<? extends Object>	getClass()	Answers the unique instance of java.lang.Class which represents the class of the receiver.
int	hashCode()	Answers an integer hash code for the receiver.
final void	notify()	Causes one thread which is waiting on the receiver to be made ready to run.
final void	notifyAll()	Causes all threads which are waiting on the receiver to be made ready to run.
String	toString()	Answers a string containing a concise, human-readable description of the receiver.
final void	wait()	Causes the thread which sent this message to be made not ready to run pending some change in the receiver (as indicated by notify or notifyAll).
final void	wait(long time)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.
final void	wait(long time, int frac)	Causes the thread which sent this message to be made not ready to run either pending some change in the receiver (as indicated by notify or notifyAll) or the expiration of the timeout.

Constructor Details

HttpContext

protected HttpContext()

Constructor for subclasses to call.

Method Details

getHandler

public abstract HttpHandler getHandler()

Returns the handler for this context.

Returns:

the HttpHandler for this context

setHandler

public abstract void setHandler(HttpHandler handler)

Sets the handler for this context, if not already set.

Parameters:

handler - the handler to set for this context

Throws:

IllegalArgumentException - if the context for this handler is already set.

NullPointerException - if handler is null

getPath

public abstract String getPath()

Returns the path this context was created with.

Returns:

the context of this path

getServer

public abstract HttpServer getServer()

Returns the server this context was created with.

Returns:

the context of this server

getAttributes

public abstract Map<String,Object> getAttributes()

Returns a mutable Map, which can be used to pass configuration and other data to Filter modules and to the context's exchange handler.

Every attribute stored in this Map will be visible to every HttpExchange processed by this context.

Returns:

a Map containing the attributes of this context

getFilters

public abstract List<Filter> getFilters()

Returns this context's List of filters. This is the actual list used by the server when dispatching requests so modifications to this list immediately affect the handling of exchanges.

Returns:

a List containing the filters of this context

setAuthenticator

public abstract Authenticator setAuthenticator(Authenticator auth)

Sets the Authenticator for this HttpContext. Once an authenticator is established on a context, all client requests must be authenticated, and the given object will be invoked to validate each request. Each call to this method replaces any previous value set.

Parameters:

auth - the Authenticator to set. If null then any previously set Authenticator is removed, and client authentication will no longer be required.

Returns:

the previous Authenticator, if any set, or null otherwise.

getAuthenticator

public abstract Authenticator getAuthenticator()

Returns the currently set Authenticator for this context if one exists.

Returns:

this HttpContext's Authenticator, or null if none is set