說下cookie，cookie在webView需要登錄的時候，webView會根據(jù)這個cookie胀茵，自動登錄：

    NSArray * cookieArr = [[NSHTTPCookieStorage sharedHTTPCookieStorage]cookies];//獲取cookie
    for (NSHTTPCookie * cookie in array) {          //遍歷cookie
      [cookie name]//輸出所有cookie的key
      [cookie value]//輸出所有cookie的value
    }

由于我這是從后臺獲得的cookie吐句，要想當(dāng)遇到網(wǎng)頁的時候胁后，讓網(wǎng)頁自動讀取cookie，我要先把它加入cookie中
把從后臺獲取的cookie加入到系統(tǒng)的cookie隊列：

由于后臺傳過來的是一個字典嗦枢，{cookieName:name,cookiePasswd:passed}

NSMutableDictionary * cookiePreperties = [NSMutableDictionary dictionary];
[cookiePreperties setObject:@"cookieName" forKey:NSHTTPCookieName];
[cookiePreperties setObject:name forKey:NSHTTPCookieValue];
[cookiePreperties setObject:@"http://" forKey:NSHTTPCookieDomain];//http后面跟需要cookie登錄的那個網(wǎng)址
[cookiePreperties setObject:@"http://" forKey:NSHTTPCookieOriginURL];
[cookiePreperties setObject:@"/" forKey:NSHTTPCookiePath];
[cookiePreperties setObject:@"0" forKey:NSHTTPCookieVersion];
NSHTTPCookie * cookie = [NSHTTPCookie cookieWithProperties:cookiePreperties];
            
NSMutableDictionary * cookiePrepertiess = [NSMutableDictionary dictionary];
[cookiePrepertiess setObject:@"cookiePasswd" forKey:NSHTTPCookieName];
[cookiePrepertiess setObject:passwd forKey:NSHTTPCookieValue];
[cookiePrepertiess setObject:@"http://" forKey:NSHTTPCookieDomain];
[cookiePrepertiess setObject:@"http://" forKey:NSHTTPCookieOriginURL];
[cookiePrepertiess setObject:@"/" forKey:NSHTTPCookiePath];
[cookiePrepertiess setObject:@"0" forKey:NSHTTPCookieVersion];
NSHTTPCookie * cookies = [NSHTTPCookie cookieWithProperties:cookiePrepertiess];

[[NSHTTPCookieStorage sharedHTTPCookieStorage]setCookie:cookie];
[[NSHTTPCookieStorage sharedHTTPCookieStorage]setCookie:cookies];

然后在輸出cookie择同，其中就有加進(jìn)去的那對cookie；
添加了cookie就有讀取cookie：

    NSString *userstring;
    NSString * passString;
    NSMutableArray *  cookArray = [[NSMutableArray alloc]init];
    NSArray * array = [[NSHTTPCookieStoragesharedHTTPCookieStorage]cookies];
    //輸出cookie
    for (NSHTTPCookie * cookie in array) {
       [cookArray addObject:[cookie name]];
      if ([[cookie name] isEqualToString:@"cookieName"]) {
       userstring = [cookie value];
      }if ([[cookie name] isEqualToString:@"cookiePasswd"]) {
       passString = [cookie value];
      }
    }

    //添加cookie净宵，用戶名
    NSArray * heardCookie = [NSHTTPCookie cookiesWithResponseHeaderFields:[NSDictionary
    dictionaryWithObject:[[NSString alloc] 
    initWithFormat:@"cookieName=%@", userstring] //這里的cookieName要后臺給
    forKey:@"Set-Cookie"] 
    forURL:[NSURL URLWithString:@"http://"]];

    [[NSHTTPCookieStorage sharedHTTPCookieStorage]setCookies:heardCookie forURL:[NSURL URLWithString:@"http://"] mainDocumentURL:nil];

    //passwd
    NSArray * heardCookie = [NSHTTPCookie cookiesWithResponseHeaderFields:[NSDictionary 
    dictionaryWithObject:[[NSString alloc] 
    initWithFormat:@"cookiePasswd =%@", passString] //cookiePasswd也是后臺給
    forKey:@"Set-Cookie"] 
    forURL:[NSURL URLWithString:@"http://"]];

    [[NSHTTPCookieStorage sharedHTTPCookieStorage]setCookies:heardCookie forURL:[NSURL URLWithString:@"http://"] mainDocumentURL:nil];

end