Apex Developer Guide

Apex Developer Guide
Getting Started with Apex
Writing Apex
Running Apex
Debugging, Testing, and Deploying Apex
Apex Language Reference
Apex DML Operations
ApexPages Namespace
AppLauncher Namespace
Approval Namespace
Auth Namespace
Cache Namespace
Canvas Namespace
ChatterAnswers Namespace
ConnectApi Namespace
Database Namespace
Datacloud Namespace
DataSource Namespace
Dom Namespace
EventBus Namespace
Flow Namespace
KbManagement Namespace
Messaging Namespace
Metadata Namespace
Process Namespace
QuickAction Namespace
Reports Namespace
Schema Namespace
Search Namespace
Sfc Namespace
Site Namespace
Support Namespace
System Namespace
Address Class
Answers Class
ApexPages Class
Approval Class
Blob Class
Boolean Class
BusinessHours Class
Cases Class
Comparable Interface
Continuation Class
Cookie Class
Cookie Constructors
Cookie Methods
Crypto Class
Custom Settings Methods
Database Class
Date Class
Datetime Class
Decimal Class
Double Class
EncodingUtil Class
Enum Methods
EventBus Class
Exception Class and Built-In Exceptions
FlexQueue Class
FeatureManagement Class
Http Class
HttpCalloutMock Interface
HttpRequest Class
HttpResponse Class
Id Class
Ideas Class
InstallHandler Interface
Integer Class
JSON Class
JSONGenerator Class
JSONParser Class
JSONToken Enum
Limits Class
List Class
Location Class
Long Class
Map Class
Matcher Class
Math Class
Messaging Class
MultiStaticResourceCalloutMock Class
Network Class
PageReference Class
Pattern Class
Queueable Interface
QueueableContext Interface
QuickAction Class
RemoteObjectController
ResetPasswordResult Class
RestContext Class
RestRequest Class
RestResponse Class
SandboxPostCopy Interface
Schedulable Interface
SchedulableContext Interface
Schema Class
Search Class
SelectOption Class
Set Class
Site Class
SObject Class
StaticResourceCalloutMock Class
String Class
StubProvider Interface
System Class
Test Class
Time Class
TimeZone Class
Trigger Class
TriggerOperation Enum
Type Class
UninstallHandler Interface
URL Class
UserInfo Class
UserManagement Class
Version Class
WebServiceCallout Class
WebServiceMock Interface
XmlStreamReader Class
XmlStreamWriter Class
TerritoryMgmt Namespace
TxnSecurity Namespace
UserProvisioning Namespace
VisualEditor Namespace
wave Namespace
Appendices
Glossary
PDF

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Cookie Class

The Cookie class lets you access cookies for your Salesforce site using Apex.

Namespace

System

Usage

Use the setCookies method of the PageReference Class to attach cookies to a page.
  • Cookie names and values set in Apex are URL encoded, that is, characters such as @ are replaced with a percent sign and their hexadecimal representation.
  • The setCookies method adds the prefix “apex__” to the cookie names.
  • Setting a cookie's value to null sends a cookie with an empty string value instead of setting an expired attribute.
  • After you create a cookie, the properties of the cookie can't be changed.
  • Be careful when storing sensitive information in cookies. Pages are cached regardless of a cookie value. If you use a cookie value to generate dynamic content, you should disable page caching. For more information, see “Cache Salesforce Sites Pages” in the Salesforce online help.

Important

Consider the following limitations when using the Cookie class:
  • The Cookie class can only be accessed using Apex that is saved using the Salesforce API version 19 and above.
  • The maximum number of cookies that can be set per Lightning Platform domain depends on your browser. Newer browsers have higher limits than older ones.
  • Cookies must be less than 4K, including name and attributes.

For more information on sites, see “Salesforce Sites” in the Salesforce online help.

Example

The following example creates a class, CookieController, which is used with a Visualforce page (see markup below) to update a counter each time a user displays a page. The number of times a user goes to the page is stored in a cookie.

The following is the Visualforce page that uses the CookieController Apex controller above. The action {!count} calls the getCount method in the controller above.