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Java Standard Edition (SE)

CookieHandler


compact1, compact2, compact3
java.net

Class CookieHandler

  • Direct Known Subclasses:
    CookieManager


    public abstract class CookieHandler
    extends Object
    A CookieHandler object provides a callback mechanism to hook up a HTTP state management policy implementation into the HTTP protocol handler. The HTTP state management mechanism specifies a way to create a stateful session with HTTP requests and responses.

    A system-wide CookieHandler that to used by the HTTP protocol handler can be registered by doing a CookieHandler.setDefault(CookieHandler). The currently registered CookieHandler can be retrieved by calling CookieHandler.getDefault(). For more information on HTTP state management, see RFC 2965: HTTP State Management Mechanism

    Since:
    1.5
    • Constructor Detail

      • CookieHandler

        public CookieHandler()
    • Method Detail

      • getDefault

        public static CookieHandler getDefault()
        Gets the system-wide cookie handler.
        Returns:
        the system-wide cookie handler; A null return means there is no system-wide cookie handler currently set.
        Throws:
        SecurityException - If a security manager has been installed and it denies NetPermission("getCookieHandler")
        See Also:
        setDefault(CookieHandler)
      • setDefault

        public static void setDefault(CookieHandler cHandler)
        Sets (or unsets) the system-wide cookie handler. Note: non-standard http protocol handlers may ignore this setting.
        Parameters:
        cHandler - The HTTP cookie handler, or null to unset.
        Throws:
        SecurityException - If a security manager has been installed and it denies NetPermission("setCookieHandler")
        See Also:
        getDefault()
      • get

        public abstract Map<String,List<String>> get(URI uri,
                                                     Map<String,List<String>> requestHeaders)
                                              throws IOException
        Gets all the applicable cookies from a cookie cache for the specified uri in the request header.

        The URI passed as an argument specifies the intended use for the cookies. In particular the scheme should reflect whether the cookies will be sent over http, https or used in another context like javascript. The host part should reflect either the destination of the cookies or their origin in the case of javascript.

        It is up to the implementation to take into account the URI and the cookies attributes and security settings to determine which ones should be returned.

        HTTP protocol implementers should make sure that this method is called after all request headers related to choosing cookies are added, and before the request is sent.

        Parameters:
        uri - a URI representing the intended use for the cookies
        requestHeaders - - a Map from request header field names to lists of field values representing the current request headers
        Returns:
        an immutable map from state management headers, with field names "Cookie" or "Cookie2" to a list of cookies containing state information
        Throws:
        IOException - if an I/O error occurs
        IllegalArgumentException - if either argument is null
        See Also:
        put(URI, Map)
      • put

        public abstract void put(URI uri,
                                 Map<String,List<String>> responseHeaders)
                          throws IOException
        Sets all the applicable cookies, examples are response header fields that are named Set-Cookie2, present in the response headers into a cookie cache.
        Parameters:
        uri - a URI where the cookies come from
        responseHeaders - an immutable map from field names to lists of field values representing the response header fields returned
        Throws:
        IOException - if an I/O error occurs
        IllegalArgumentException - if either argument is null
        See Also:
        get(URI, Map)


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