Cookie クラス

1// A Visualforce controller class that creates a cookie
2// used to keep track of how often a user displays a page
3public class CookieController {
4
5    public CookieController() {
6        Cookie counter = ApexPages.currentPage().getCookies().get('counter');
7    
8        // If this is the first time the user is accessing the page, 
9        // create a new cookie with name 'counter', an initial value of '1', 
10        // path 'null', maxAge '-1', and isSecure 'false'. 
11        if (counter == null) {
12            counter = new Cookie('counter','1',null,-1,false);
13        } else {
14        // If this isn't the first time the user is accessing the page
15        // create a new cookie, incrementing the value of the original count by 1
16            Integer count = Integer.valueOf(counter.getValue());
17            counter = new Cookie('counter', String.valueOf(count+1),null,-1,false);
18        }
19    
20        // Set the new cookie for the page
21        ApexPages.currentPage().setCookies(new Cookie[]{counter});
22    }
23
24    // This method is used by the Visualforce action {!count} to display the current 
25    // value of the number of times a user had displayed a page. 
26    // This value is stored in the cookie.
27    public String getCount() {
28        Cookie counter = ApexPages.currentPage().getCookies().get('counter');
29        if(counter == null) {
30            return '0';
31        }
32        return counter.getValue();
33    }
34}

1// Test class for the Visualforce controller
2@isTest
3private class CookieControllerTest {
4  // Test method for verifying the positive test case
5  static testMethod void testCounter() {
6    //first page view
7    CookieController controller = new CookieController();
8    System.assert(controller.getCount() == '1');
9
10    //second page view       
11    controller = new CookieController();
12    System.assert(controller.getCount() == '2');
13  }
14}