一直以为ios的http请求这块很简单应该不支持记录,保存,或者使用cookie,可是想当然归想当然,真用的时候,真研究了一下发现还真强大。经过一番的研究简单说一下我的理解:当你访问一个网站时,不管你愿意或者不愿意,NSURLRequest都会帮你主动记录下来你访问的站点设置的cookie,而且很负责任的,当你下次再访问这个站点时,NSURLRequest会拿着上次保存下来了的cookie继续去请求。这规律同样适用于ASIHTTPRequest。所以当你做一些基于认证的网络请求时,cookie不失为一个完美的解决方案。
那么怎么查看cookie呢?很简单:
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [cookieJar cookies]) {
NSLog(@"%@", cookie);
}
这样就列出了所有已保存的cookie,如果当前为空怎么办呢?随便请求一个url喽
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://blog.cnrainbird.com"]
cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData
timeoutInterval:3];
[NSURLConnection sendSynchronousRequest:request
returningResponse:nil
error:nil];
NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [cookieJar cookies]) {
NSLog(@"%@", cookie);
}
是不是得到了类似:
<NSHTTPCookie version:0 name:"PHPSESSID" value:"evf5rcboo8th1dnl53fs4ukmt2" expiresDate:(null) created:2012-03-13 14:28:13 +0000 (3.53342e+08) sessionOnly:TRUE domain:"blog.cnrainbird.com" path:"/" isSecure:FALSE>
的东东?这就是cookie啦
怎么清空cookie呢?
NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];
[cookieProperties setObject:@"username" forKey:NSHTTPCookieName];
[cookieProperties setObject:@"rainbird" forKey:NSHTTPCookieValue];
[cookieProperties setObject:@"cnrainbird.com" forKey:NSHTTPCookieDomain];
[cookieProperties setObject:@"cnrainbird.com" forKey:NSHTTPCookieOriginURL];
[cookieProperties setObject:@"/" forKey:NSHTTPCookiePath];
[cookieProperties setObject:@"0" forKey:NSHTTPCookieVersion];
NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieProperties];
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];
这样就可以了。输入一下,是不是得到了下面这样的结果:
<NSHTTPCookie version:0 name:"username" value:"rainbird" expiresDate:(null) created:2012-03-13 14:36:53 +0000 (3.53342e+08) sessionOnly:TRUE domain:"cnrainbird.com" path:"/" isSecure:FALSE>
其实ios的cookie就这么简单。如果mac也支持这么干的话,那以后写点登陆的脚本不是简单多了:)
本文出自 “rainbird” 博客,请务必保留此出处http://rainbird.blog.51cto.com/211214/805173
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