iOS 清理某一個cookies 或者全部 cookies

原貼地址：http://blog.csdn.net/jinglijun/article/details/9048959

清除所有的cookie 方法：
[html]  view plain copy NSURL *url = [NSURL URLWithString:@"http://www.baidu.com"];       if (url) {           NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:url];           for (int i = 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： [html]  view plain copy 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緩衝的方法：

[html]  view plain copy [[NSURLCache sharedURLCache] removeCachedResponseForRequest:[NSURLRequest requestWithURL:url]];  

清除所有緩衝方法：        

[html]  view plain copy [[NSURLCache sharedURLCache] removeAllCachedResponses];