Module jakarta.servlet

Package jakarta.servlet

Interface SessionCookieConfig

public interface SessionCookieConfig

Class that may be used to configure various properties of cookies used for session tracking purposes.

An instance of this class is acquired by a call to ServletContext.getSessionCookieConfig().

Since:

Servlet 3.0

Method Summary

Modifier and Type	Method	Description
String	getAttribute(String name)	Obtain the value for a given session cookie attribute.
Map<String,String>	getAttributes()	Obtain the Map (keys are case insensitive) of all attributes and values, including those set via the attribute specific setters, (excluding version) for this SessionCookieConfig.
String	getComment()	Deprecated, for removal: This API element is subject to removal in a future version. This is no longer required with RFC 6265
String	getDomain()	Gets the domain name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
int	getMaxAge()	Gets the lifetime (in seconds) of the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
String	getName()	Gets the name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
String	getPath()	Gets the path that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
boolean	isHttpOnly()	Checks if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired will be marked as HttpOnly.
boolean	isSecure()	Checks if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired will be marked as secure even if the request that initiated the corresponding session is using plain HTTP instead of HTTPS.
void	setAttribute(String name, String value)	Sets the value for the given session cookie attribute.
void	setComment(String comment)	Deprecated, for removal: This API element is subject to removal in a future version. This is no longer required with RFC 6265
void	setDomain(String domain)	Sets the domain name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
void	setHttpOnly(boolean httpOnly)	Marks or unmarks the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired as HttpOnly.
void	setMaxAge(int maxAge)	Sets the lifetime (in seconds) for the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
void	setName(String name)	Sets the name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
void	setPath(String path)	Sets the path that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.
void	setSecure(boolean secure)	Marks or unmarks the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired as secure.

Method Details

setName

void setName(String name)

Sets the name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

NOTE: Changing the name of session tracking cookies may break other tiers (for example, a load balancing frontend) that assume the cookie name to be equal to the default JSESSIONID, and therefore should only be done cautiously.

Parameters:

name - the cookie name to use

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

getName

String getName()

Gets the name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

By default, JSESSIONID will be used as the cookie name.

Returns:

the cookie name set via setName(java.lang.String), or null if setName(java.lang.String) was never called

See Also:

• Cookie.getName()

setDomain

void setDomain(String domain)

Sets the domain name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

Parameters:

domain - the cookie domain to use

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

See Also:

• Cookie.setDomain(String)

getDomain

String getDomain()

Gets the domain name that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

Returns:

the cookie domain set via setDomain(java.lang.String), or null if setDomain(java.lang.String) was never called

See Also:

• Cookie.getDomain()

setPath

void setPath(String path)

Sets the path that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

Parameters:

path - the cookie path to use

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

See Also:

• Cookie.setPath(String)

getPath

String getPath()

Gets the path that will be assigned to any session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

By default, the context path of the ServletContext from which this SessionCookieConfig was acquired will be used.

Returns:

the cookie path set via setPath(java.lang.String), or null if setPath(java.lang.String) was never called

See Also:

• Cookie.getPath()

setComment

@Deprecated(since="Servlet 6.0",
            forRemoval=true)
void setComment(String comment)

Deprecated, for removal: This API element is subject to removal in a future version.

This is no longer required with RFC 6265

With the adoption of support for RFC 6265, this method should no longer be used.

If called, this method has no effect.

Parameters:

comment - ignore

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

See Also:

• Cookie.setComment(String)
• Cookie.getVersion()

getComment

@Deprecated(since="Servlet 6.0",
            forRemoval=true)
String getComment()

Deprecated, for removal: This API element is subject to removal in a future version.

This is no longer required with RFC 6265

With the adoption of support for RFC 6265, this method should no longer be used.

Returns:

Always null

See Also:

• Cookie.getComment()

setHttpOnly

void setHttpOnly(boolean httpOnly)

Marks or unmarks the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired as HttpOnly.

A cookie is marked as HttpOnly by adding the HttpOnly attribute to it. HttpOnly cookies are not supposed to be exposed to client-side scripting code, and may therefore help mitigate certain kinds of cross-site scripting attacks.

Parameters:

httpOnly - true if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired shall be marked as HttpOnly, false otherwise

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

See Also:

• Cookie.setHttpOnly(boolean)

isHttpOnly

boolean isHttpOnly()

Checks if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired will be marked as HttpOnly.

Returns:

true if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired will be marked as HttpOnly, false otherwise

See Also:

• Cookie.isHttpOnly()

setSecure

void setSecure(boolean secure)

Marks or unmarks the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired as secure.

One use case for marking a session tracking cookie as secure, even though the request that initiated the session came over HTTP, is to support a topology where the web container is front-ended by an SSL offloading load balancer. In this case, the traffic between the client and the load balancer will be over HTTPS, whereas the traffic between the load balancer and the web container will be over HTTP.

Parameters:

secure - true if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired shall be marked as secure even if the request that initiated the corresponding session is using plain HTTP instead of HTTPS, and false if they shall be marked as secure only if the request that initiated the corresponding session was also secure

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

See Also:

• Cookie.setSecure(boolean)
• ServletRequest.isSecure()

isSecure

boolean isSecure()

Checks if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired will be marked as secure even if the request that initiated the corresponding session is using plain HTTP instead of HTTPS.

Returns:

true if the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired will be marked as secure even if the request that initiated the corresponding session is using plain HTTP instead of HTTPS, and false if they will be marked as secure only if the request that initiated the corresponding session was also secure

See Also:

• Cookie.getSecure()
• ServletRequest.isSecure()

setMaxAge

void setMaxAge(int maxAge)

Sets the lifetime (in seconds) for the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

Parameters:

maxAge - the lifetime (in seconds) of the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

Throws:

IllegalStateException - if the ServletContext from which this SessionCookieConfig was acquired has already been initialized

See Also:

• Cookie.setMaxAge(int)

getMaxAge

int getMaxAge()

Gets the lifetime (in seconds) of the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired.

By default, -1 is returned.

Returns:

the lifetime (in seconds) of the session tracking cookies created on behalf of the application represented by the ServletContext from which this SessionCookieConfig was acquired, or -1 (the default)

See Also:

• Cookie.getMaxAge()

setAttribute

void setAttribute(String name,
 String value)

Sets the value for the given session cookie attribute. When a value is set via this method, the value returned by the attribute specific getter (if any) must be consistent with the value set via this method.

Parameters:

name - Name of attribute to set, case insensitive

value - Value of attribute

Throws:

IllegalStateException - if the associated ServletContext has already been initialised

IllegalArgumentException - If the attribute name is null or contains any characters not permitted for use in Cookie names.

NumberFormatException - If the attribute is known to be numerical but the provided value cannot be parsed to a number.

Since:

Servlet 6.0

getAttribute

String getAttribute(String name)

Obtain the value for a given session cookie attribute. Values returned from this method must be consistent with the values set and returned by the attribute specific getters and setters in this class.

Parameters:

name - Name of attribute to return, case insensitive

Returns:

Value of specified attribute

Since:

Servlet 6.0

getAttributes

Map<String,String> getAttributes()

Obtain the Map (keys are case insensitive) of all attributes and values, including those set via the attribute specific setters, (excluding version) for this SessionCookieConfig.

Returns:

A read-only Map of attributes to values, excluding version.

Since:

Servlet 6.0