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一直以為ios的http請求這塊很簡單應(yīng)該不支持記錄,保存,或者使用cookie,可是想當(dāng)然歸想當(dāng)然,真用的時候,真研究了一下發(fā)現(xiàn)還真強大。經(jīng)過一番的研究簡單說一下我的理解:當(dāng)你訪問一個網(wǎng)站時,不管你愿意或者不愿意,NSURLRequest都會幫你主動記錄下來你訪問的站點設(shè)置的cookie,而且很負責(zé)任的,當(dāng)你下次再訪問這個站點時,NSURLRequest會拿著上次保存下來了的cookie繼續(xù)去請求。這規(guī)律同樣適用于ASIHTTPRequest。所以當(dāng)你做一些基于認證的網(wǎng)絡(luò)請求時,cookie不失為一個完美的解決方案。
那么怎么查看cookie呢?很簡單:
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NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
for (NSHTTPCookie *cookie in [cookieJar cookies]) { NSLog(@"%@", cookie); } |
這樣就列出了所有已保存的cookie,如果當(dāng)前為空怎么辦呢?隨便請求一個url嘍。
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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); } |
是不是得到了類似:
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<NSHTTPCookie version:0 name:"PHPSESSID" value:"evf5rcboo8th2dnl53fs4ukmt2" expiresDate:(null) created:2012-03-13 14:28:13 +0000 (3.53342e+08) sessionOnly:TRUE domain:"blog.cnrainbird.com" path:"/" isSecure:FALSE>
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的東東?這就是cookie啦
怎么清空cookie呢?
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NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];
NSArray *_tmpArray = [NSArray arrayWithArray:[cookieJar cookies]]; for (id obj in _tmpArray) { [cookieJar deleteCookie:obj]; } |
這樣cookie就消失的一干二凈了。
會查看cookie了,也會清空cookie了,怎么設(shè)置指定的cookie呢?
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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]; |
這樣就可以了。輸入一下,是不是得到了下面這樣的結(jié)果:
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<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>
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其實ios的cookie就這么簡單。如果mac也支持這么干的話,那以后寫點登陸的腳本不是簡單多了:)
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