网络请求 cookie的添加

来源：互联网发布：tensorflow 下载编辑：程序博客网时间：2024/05/16 18:12

当你访问一个网站时，NSURLRequest都会帮你主动记录下来你访问的站点设置的cookie，如果 Cookie 存在的话，会把这些信息放在 NSHTTPCookieStorage 容器中共享，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。
同样适用于ASIHTTPRequest,AFNetworking, Webview等,cookie常用于一些基于认证的网络请求

认识下NSHTTPCookieStorage
NSHTTPCookieStorage 实现了一个管理cookie的单例对象(只有一个实例)，每个cookie都是NSHTTPCookie类的实例，最为一个规则，cookie在所有应用之间共享并在不同进程之间保持同步。Session cookie(一个isSessionOnly方法返回YES的cookie)只能在单一进程中使用。

Cookie
Cookie是由服务器端生成，发送给User-Agent（一般是浏览器或者客户端），浏览器会将Cookie的key/value保存到某个目录下的文本文件内，下次请求同一网站地址时就发送该Cookie给服务器

HTTP header
HTTP header中包含HTTP请求与响应的操作参数. header属性定义了所传输数据的各种特性. header属性以属性名开始,以冒号结尾,最后是属性值.属性名及值会因应用的不同

ios htttp网络请求cookie的读取与写入:
1.原生NSURLConnection写法

- (IBAction)cookieTouched:(id)sender {

NSURL *url = [NSURL URLWithString:@"http://api.skyfox.org/api-test.php"];

NSURLRequest *request = [NSURLRequest requestWithURL:url]

cachePolicy:NSURLRequestReloadIgnoringLocalAndRemoteCacheData

timeoutInterval:3];

NSOperationQueue *queue = [[NSOperationQueue alloc]init];

[NSURLConnection sendAsynchronousRequest:request

queue:queue

completionHandler:^(NSURLResponse *response, NSData *data, NSError *error){

//转换NSURLResponse成为HTTPResponse

NSHTTPURLResponse *HTTPResponse = (NSHTTPURLResponse *)response;

//获取headerfields

NSDictionary *fields = [HTTPResponse allHeaderFields];//原生NSURLConnection写法

// NSDictionary *fields = [operation.response allHeaderFields]; //afnetworking写法

NSLog(@"fields = %@",[fields description]);

//获取cookie方法1

// NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:fields forURL:url];

//获取cookie方法2

//NSString *cookieString = [[HTTPResponse allHeaderFields] valueForKey:@"Set-Cookie"];

//获取cookie方法3

NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];

for (NSHTTPCookie *cookiein [cookieJar cookies]) {

NSLog(@"cookie%@", cookie);

}

}];

}

2.AFNetworking 写法

[[APIClient sharedClient] postPath:@"http://api.skyfox.org/api-test.php" parameters:p success:^(AFHTTPRequestOperation *operation,id JSON) {

NSDictionary *fields = [operation.response allHeaderFields]; //afnetworking写法

NSLog(@"fields = %@",[fields description]);

NSURL *url = [NSURL URLWithString:@"http://api.skyfox.org/api-test.php"];

//获取cookie方法1

NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:fields forURL:url];

//获取cookie方法2

//NSString *cookieString = [[HTTPResponse allHeaderFields] valueForKey:@"Set-Cookie"];

} failure:^(AFHTTPRequestOperation *operation, NSError *error) {

}];

二.清空cookie

NSHTTPCookieStorage *cookieJar = [NSHTTPCookieStorage sharedHTTPCookieStorage];

NSArray *cookieArray = [NSArray arrayWithArray:[cookieJar cookies]];

for (id objin cookieArray) {

[cookieJar deleteCookie:obj];

}

三.手动设置cookie

第一次请求手动设置个cookie

-(void)test1:(NSString*)urlString{

NSURL *url = [NSURL URLWithString:@"http://api.skyfox.org/cookie.php"];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

NSMutableDictionary *cookieProperties = [NSMutableDictionary dictionary];

[cookieProperties setObject:@"username" forKey:NSHTTPCookieName];

[cookieProperties setObject:@"my ios cookie" forKey:NSHTTPCookieValue];

[cookieProperties setObject:@"api.skyfox.org" forKey:NSHTTPCookieDomain];

[cookieProperties setObject:@"api.skyfox.org" forKey:NSHTTPCookieOriginURL];

[cookieProperties setObject:@"/" forKey:NSHTTPCookiePath];

[cookieProperties setObject:@"0" forKey:NSHTTPCookieVersion];

NSHTTPCookie *cookie = [NSHTTPCookie cookieWithProperties:cookieProperties];

[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookie];

[self.myWebView loadRequest:request];

}

//第二次请求会自动带上cookie

- (IBAction)test2:(id)sender {

NSURL *url = [NSURL URLWithString:@"http://api.skyfox.org/cookie.php"];

NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];

[self.mywebview2 loadRequest:request];

}

AFNetworking 3.0

request还可以这样设置个cookie

[request setHTTPShouldHandleCookies:YES];

[request setValue:[NSString stringWithFormat:@"%@=%@", [cookie name], [cookie value]] forHTTPHeaderField:@"Cookie

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