清除所有的cookie 方法：
NSURL *url= [NSURL URLWithString:@"http://www.baidu.com"];
if?(url)?{
NSArray?*cookies=?[[NSHTTPCookieStorage?sharedHTTPCookieStorage]?cookiesForURL:url];
for?(inti=0;?i<[cookies?count];?i++)?{
NSHTTPCookie?*cookie=?(NSHTTPCookie?*)[cookies?objectAtIndex:i];
[[NSHTTPCookieStorage?sharedHTTPCookieStorage]?deleteCookie:cookie];
}
清除某一個特定的cookie方法：
NSArray *cookArray= [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:[NSURL URLWithString:self.loadURL]]; NSString *successCode= @""; for (NSHTTPCookie*cookie in cookArray) { if ([cookie.name isEqualToString:@"cookiename"]) { [[NSHTTPCookieStorage sharedHTTPCookieStorage] deleteCookie:cookie]; } }
清除某一個url緩存的方法
[[NSURLCache sharedURLCache] removeCachedResponseForRequest:[NSURLRequest requestWithURL:url]];
