iOS cookie的三种用法

在APP开发中，cookie也开始变的越来越重要了。为了更好的切换，注销和登录账户，就必须熟悉cookie的用法。

花了点时间把代码整理了一下，注释也都标上了

1，获取cookie

获取cookie只能在请求中获取cookie，否则时获取不到的，url就不给出了，大家用自己的url测试一下就行。

获取到cookie后把cookie进行归档保存到userDefaults里

#pragma mark 获取并保存cookie到userDefaults

- (void)getAndSaveCookie

{

NSLog(@"=============获取cookie==============");

NSString *urlString = @"";

//请求一个网址，即可分配到cookie

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];

manager.responseSerializer = [AFJSONResponseSerializer new];

[manager GET:urlString parameters:nil success:^(AFHTTPRequestOperation *operation, id responseObject) {

//获取cookie

NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];

for (NSHTTPCookie *tempCookie in cookies) {

//打印获得的cookie

NSLog(@"getCookie: %@", tempCookie);

}

/*

* 把cookie进行归档并转换为NSData类型

* 注意：cookie不能直接转换为NSData类型，否则会引起崩溃。

* 所以先进行归档处理，再转换为Data

*/

NSData *cookiesData = [NSKeyedArchiver archivedDataWithRootObject: [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies]];

//存储归档后的cookie

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

[userDefaults setObject: cookiesData forKey: @"cookie"];

NSLog(@"\n");

[self deleteCookie];

[self setCoookie];

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

nil;

}];

}

2，删除cookie

把获取到的cookie删除掉，该步骤可以用在注销或者切换账号里。

当前，我这里删除cookie是为了检测后面的通过本地存储的数据进行设置cookie是否成功

#pragma mark 删除cookie

- (void)deleteCookie

{

NSLog(@"============删除cookie===============");

NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];

NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];

//删除cookie

for (NSHTTPCookie *tempCookie in cookies) {

[cookieStorage deleteCookie:tempCookie];

}

//把cookie打印出来，检测是否已经删除

NSArray *cookiesAfterDelete = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];

for (NSHTTPCookie *tempCookie in cookiesAfterDelete) {

NSLog(@"cookieAfterDelete: %@", tempCookie);

}

NSLog(@"\n");

}

3，通过本地存储的数据设置cookie

把本地的cookie取出并反归档，设置到cookie中，并且检测cookie是否设置成功

#pragma mark 再取出保存的cookie重新设置cookie

- (void)setCoookie

{

NSLog(@"============再取出保存的cookie重新设置cookie===============");

//取出保存的cookie

NSUserDefaults *userDefaults = [NSUserDefaults standardUserDefaults];

//对取出的cookie进行反归档处理

NSArray *cookies = [NSKeyedUnarchiver unarchiveObjectWithData:[userDefaults objectForKey:@"cookie"]];

if (cookies) {

NSLog(@"有cookie");

//设置cookie

NSHTTPCookieStorage *cookieStorage = [NSHTTPCookieStorage sharedHTTPCookieStorage];

for (id cookie in cookies) {

[cookieStorage setCookie:(NSHTTPCookie *)cookie];

}

}else{

NSLog(@"无cookie");

}

//打印cookie，检测是否成功设置了cookie

NSArray *cookiesA = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookies];

for (NSHTTPCookie *cookie in cookiesA) {

NSLog(@"setCookie: %@", cookie);

}

NSLog(@"\n");

}