iPhone发出POST请求，处理cookie [英] iPhone Make POST request, handle cookie

问题描述

我希望有人能够阐明以下几点，我想我正在朝着正确的方向前进。我想用一个用户/密码组合登录到我的服务器，然后我需要能够告诉我是否正确登录（应该删除一个cookie），如果是这种情况，我会提出另一个请求。

任何帮助表示感谢，继承人我正在使用的代码：

  [[ NSHTTPCookieStorage sharedHTTPCookieStorage] setCookieAcceptPolicy：NSHTTPCookieAcceptPolicyAlways]; 
 
 NSString * post = [NSString stringWithFormat：@name =％@&pass =％@，@foo，@bar]; 
 NSData * postData = [post dataUsingEncoding：NSASCIIStringEncoding allowLossyConversion：YES]; 
 NSString * postLength = [NSString stringWithFormat：@％d，[postData length]]; 
 
 NSMutableURLRequest * request = [[[[NSMutableURLRequest alloc] init] autorelease]; 
 [request setURL：[NSURL URLWithString：@http://www.mywebserver.com/login.php]]; 
 [request setHTTPMethod：@POST]; 
 [request setValue：postLength forHTTPHeaderField：@Content-Length]; 
 [request setValue：@application / x-www-form-urlencodedforHTTPHeaderField：@Content-Type]; 
 [request setHTTPBody：postData]; 
 
 NSError *错误; 
 NSURLResponse *响应; 
 NSData * urlData = [NSURLConnection sendSynchronousRequest：request returningResponse：& response error：& error]; 
 NSString * data = [[NSString alloc] initWithData：urlData encoding：NSUTF8StringEncoding]; 
 NSLog（data）; 
 
 //如何检查Cookie是否被删除？ 
 
 
 //发出另一个请求.. 
  

解决方案

这应该可以工作：

  NSDictionary * headerFields = [（NSHTTPURLResponse *）response allHeaderFields]; 
 NSURL * url = [NSURL URLWithString：@http://www.mywebserver.com/login.php]; 
 NSArray * cookies = [NSHTTPCookie cookiesWithResponseHeaderFields：headerFields forURL：url]; 
  

然后您就可以知道 cookies 数组包含你想要的cookie。

您也可以在收到回复后调用它：

  NSArray * cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL：url]; 
  

I'm hoping someone can shed some light on the following, I think I am heading in the right direction with this. I want to login to my server with a user/pass combo, then I need to be able to tell If I logged in correctly (a cookie should be dropped), then I will make another request if this is the case.

Any help appreciated, heres the code I am working with:

[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookieAcceptPolicy:NSHTTPCookieAcceptPolicyAlways];

NSString *post =[NSString stringWithFormat:@"name=%@&pass=%@",@"foo", @"bar"];
NSData *postData = [post dataUsingEncoding:NSASCIIStringEncoding allowLossyConversion:YES];
NSString *postLength = [NSString stringWithFormat:@"%d", [postData length]];

NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:@"http://www.mywebserver.com/login.php"]];
[request setHTTPMethod:@"POST"];
[request setValue:postLength forHTTPHeaderField:@"Content-Length"];
[request setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
[request setHTTPBody:postData];

NSError *error;
NSURLResponse *response;
NSData *urlData=[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSString *data=[[NSString alloc]initWithData:urlData encoding:NSUTF8StringEncoding];
NSLog(data);

// HOW to Check if there was a Cookie dropped??


// Make another request..

解决方案

This should work:

NSDictionary *headerFields = [(NSHTTPURLResponse*)response allHeaderFields]; 
NSURL *url = [NSURL URLWithString:@"http://www.mywebserver.com/login.php"];   
NSArray *cookies = [NSHTTPCookie cookiesWithResponseHeaderFields:headerFields forURL:url];

Then you can know if the cookies array contains the cookie you want.

You could also call this after receiving the response:

NSArray *cookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:url];

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