如何获取cookie并将其用于POST（iOS）等其他请求？

我之前的问题是关于每次loginWeb服务（如发布链接或上传图片）时都必须login的问题。 菲利普回答说，我必须使用Cookie而不是每个请求的login过程。 我发现这种获取cookie的方法：

- (void)getCookies { NSHTTPURLResponse * response; NSError * error; NSMutableURLRequest *request; request = [[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://MyWebsite.com/login.php"] cachePolicy:NSURLRequestReloadIgnoringCacheData timeoutInterval:120]; NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error]; NSLog(@"%@", [[NSString alloc] initWithData:data encoding:NSASCIIStringEncoding]); NSArray * all = [NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:[NSURL URLWithString:@"http://MyWebsite.com/login.php"]]; NSLog(@"%d", all.count); for (NSHTTPCookie *cookie in all) { NSLog(@"Name: %@ : Value: %@", cookie.name, cookie.value); NSLog(@"Comment: %@ : CommentURL: %@", cookie.comment, cookie.commentURL); NSLog(@"Domain: %@ : ExpiresDate: %@", cookie.domain, cookie.expiresDate); NSLog(@"isHTTPOnly: %c : isSecure: %c", cookie.isHTTPOnly, cookie.isSecure); NSLog(@"isSessionOnly: %c : path: %@", cookie.isSessionOnly, cookie.path); NSLog(@"portList: %@ : properties: %@", cookie.portList, cookie.properties); NSLog(@"version: %u", cookie.version); } } 

我也发现这个代码使用这些cookie，但我不知道如何使用它：

 [[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookie:cookies]; 

这里是我发布的方法，我正在使用RestKit API：

 - (IBAction)addLinkPressed:(UIButton *)sender { [RKClient clientWithBaseURLString:@"http://MyWebsite.com"]; NSDictionary* params = [NSDictionary dictionaryWithObjectsAndKeys: self.linkField.text, @"url", self.linkTitleField.text, @"title", self.linkSummaryField.text, @"summary", nil]; RKRequest *request = [[RKClient sharedClient] post:@"/send_link.php" params:params delegate:self]; [request setUserData:@"sendLink"]; } 

问题：我应该存储哪些cookies属性来用于login信息，以及我应该在哪里存放我的代码？

Answer 1

我以一种低效的方式解决了这个问题。 这里是我的方法：首先，我尝试发布到Web服务，发布后我parsing返回的HTML，看看是否成功张贴。 如果发布成功，我会给用户一个合适的信息，告诉用户您发布的是成功的，但是如果发布不成功，可能有两个原因：第一：执行后有错误第二：用户没有login。我认识到第一和第二错误的区别只是parsingHTML的响应。 这是我用于这种方法的代码（这是用户想要更改密码的时间）

 - (void)objectLoader:(RKObjectLoader*)objectLoader didFailWithError:(NSError*)error { NSRange range = [[error localizedDescription] rangeOfString:@"-1012"]; if (range.length > 0){ //First error occurs here } RKLogError(@"Hit error: %@", error); } - (IBAction)requestToChangePasswordPressed { MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; hud.labelText = @"Loading"; [RKClient clientWithBaseURLString:@"http://WebServiceDomain.com"]; NSDictionary* params = [NSDictionary dictionaryWithObjectsAndKeys: self.oldPasswordField.text, @"oldPassword", self.passwordNew.text, @"newPassword", self.confirmPasswordField.text, @"confirmPassword", nil]; RKRequest *request = [[RKClient sharedClient] post:@"/change_password.php" params:params delegate:self]; [request setUserData:@"changePassword"]; [self.view endEditing:YES]; [MBProgressHUD hideHUDForView:self.view animated:YES]; } - (void)autoLogin { [RKClient clientWithBaseURLString:@"http://WebServiceDomain.com"]; [RKObjectManager sharedManager].client=[RKClient sharedClient]; RKParams *parameters = [RKParams params]; [parameters setValue:[[NSUserDefaults standardUserDefaults] objectForKey:@"defaultUsername"] forParam:@"username"]; [parameters setValue:[[NSUserDefaults standardUserDefaults] objectForKey:@"defaultPassword"] forParam:@"password"]; [[RKClient sharedClient] setAuthenticationType:RKRequestAuthenticationTypeHTTP]; // because we have two POSTs and we want to use the same method for both of the for didLoadResponse: we set the UserDate like bellow RKRequest *request = [[RKClient sharedClient] post:@"/login.php" params:parameters delegate:self]; [request setUserData:@"login"]; } - (void)request:(RKRequest*)request didLoadResponse:(RKResponse*)response { MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; hud.labelText = @"Loading"; id userData = [request userData]; if ([userData isEqual:@"login"]) { if ([request isGET]) { // Handling GET /foo.xml if ([response isOK]) { // Success! Let's take a look at the data NSLog(@"Retrieved XML: %@", [response bodyAsString]); } } else if ([request isPOST]) { // Handling POST /other.json if ([response isJSON]) { NSLog(@"Got a JSON response back from our POST!"); } } else if ([request isDELETE]) { // Handling DELETE /missing_resource.txt if ([response isNotFound]) { NSLog(@"The resource path '%@' was not found.", [request resourcePath]); } } } else if ([userData isEqual:@"sendLink"]) { NSData *addLinksHtmlData = response.body; // 2 TFHpple *addlinksParser = [TFHpple hppleWithHTMLData:addLinksHtmlData]; // 3 NSString *errorLinksXpathQueryString = @"//div[@class='errorBox']/ul/li"; NSArray *errorLinksNodes = [addlinksParser searchWithXPathQuery:errorLinksXpathQueryString]; // 4 NSMutableArray *newErrorLinks = [[NSMutableArray alloc] initWithCapacity:0]; for (TFHppleElement *element in errorLinksNodes) { // 5 AllModels *errorTitle = [[AllModels alloc] init]; [newErrorLinks addObject:errorTitle]; // 6 errorTitle.errorTitle = [[element firstChild] content]; } // 8 self.linkErrorObjects = newErrorLinks; NSString *successLinksXpathQueryString = @"//div[@class='successBox']"; NSArray *successLinksNodes = [addlinksParser searchWithXPathQuery:successLinksXpathQueryString]; // 4 NSMutableArray *newSuccessLinks = [[NSMutableArray alloc] initWithCapacity:0]; for (TFHppleElement *element in successLinksNodes) { // 5 AllModels *successTitle = [[AllModels alloc] init]; [newSuccessLinks addObject:successTitle]; // 6 successTitle.successTitle = [[element firstChild] content]; } // 8 self.linkSuccessObjects = newSuccessLinks; } else { NSLog(@"HTTP status code: %d", response.statusCode); NSLog(@"HTTP status message: %@", [response localizedStatusCodeString]); NSLog(@"Header fields: %@", response.allHeaderFields); NSLog(@"Body: %@", response.bodyAsString); NSData *HtmlData = response.body; // 2 TFHpple *addParser = [TFHpple hppleWithHTMLData:HtmlData]; // 3 NSString *errorXpathQueryString = @"//div[@class='errorBox']/ul/li"; NSArray *errorNodes = [addParser searchWithXPathQuery:errorXpathQueryString]; // 4 NSMutableArray *newError = [[NSMutableArray alloc] initWithCapacity:0]; for (TFHppleElement *element in errorNodes) { // 5 AllModels *errorTitle = [[AllModels alloc] init]; [newError addObject:errorTitle]; // 6 errorTitle.errorTitle = [[element firstChild] content]; } // 8 self.ErrorObjects = newError; NSString *successXpathQueryString = @"//div[@class='successBox']"; NSArray *successNodes = [addParser searchWithXPathQuery:successXpathQueryString]; // 4 NSMutableArray *newSuccess = [[NSMutableArray alloc] initWithCapacity:0]; for (TFHppleElement *element in successNodes) { // 5 AllModels *successTitle = [[AllModels alloc] init]; [newSuccess addObject:successTitle]; // 6 successTitle.successTitle = [[element firstChild] content]; } // 8 self.successObjects = newSuccess; [self errorCheck]; } [MBProgressHUD hideHUDForView:self.view animated:YES]; [MBProgressHUD hideHUDForView:self.view animated:YES]; } - (void)errorCheck { MBProgressHUD *hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES]; hud.labelText = @"Loading"; if(self.errorObjects.count > 0) { AllModels *errorlink = [self.errorObjects objectAtIndex:0]; UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"There is a problem" message:errorlink.errorTitle delegate:nil cancelButtonTitle:@"Ok" otherButtonTitles:nil , nil]; [alert show]; } else { if(self.linkErrorObjects.count > 0) { [self autoLogin]; [self requestToChangePasswordPressed]; } else { AllModels *successlink = [self.successObjects objectAtIndex:0]; self.successLabel.hidden = NO; self.successLabel.text = successlink.successTitle; NSLog(@"Success Title: %@",successlink.successTitle); [UIView animateWithDuration:3.0 delay:0.0 options:UIViewAnimationOptionBeginFromCurrentState animations:^{ self.successLabel.alpha = 0.0; } completion:^(BOOL fin) { if (fin) [self.successLabel removeFromSuperview]; }]; [self performSelector:@selector(dismissModalViewController) withObject:nil afterDelay:1.0]; } } [MBProgressHUD hideHUDForView:self.view animated:YES]; [MBProgressHUD hideHUDForView:self.view animated:YES]; }