我正在Objective-C中编写一个程序,我需要将Web请求发送到Web服务器,但异步地,我在Mac上是相当新的,我非常擅长
windows技术,但是我需要知道,如果我使用NSOperation在10.5中,我假设它不会在10.4 MAC中运行),或者如果它被实现,使用将在10.4上可用的系统线程？
或者我应该创建一个新的线程,创建一个新的runloop,还有如何使用cookies等,如果有人可以给我一个小例子,那将是很大的帮助.我想要这个样本也可以在mac 10.4上运行.
解决方法
有一个很好的例子,使用NSURLRequest和NSHTTPCookies做一个完整的Web应用程序登录网站的例子,存储SessionID cookie,并在将来的请求中重新提交.
通过logix812：
NSHTTPURLResponse * response;
NSError * error;
NSMutableURLRequest * request;
request = [[[NSMutableURLRequest alloc] initWithURL:[NSURL URLWithString:@"http://temp/gomh/authenticate.py?setCookie=1"]
cachePolicy:NSURLRequestReloadIgnoringCacheData
timeoutInterval:60] autorelease];
[NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(@"RESPONSE HEADERS: \n%@",[response allHeaderFields]);
// If you want to get all of the cookies:
NSArray * all = [NSHTTPCookie cookiesWithResponseHeaderFields:[response allHeaderFields] forURL:[NSURL URLWithString:@"http://temp"]];
NSLog(@"How many Cookies: %d",all.count);
// Store the cookies:
// NSHTTPCookieStorage is a Singleton.
[[NSHTTPCookieStorage sharedHTTPCookieStorage] setCookies:all forURL:[NSURL URLWithString:@"http://temp"] mainDocumentURL:nil];
// Now we can print all of the cookies we have:
for (NSHTTPCookie *cookie in all)
NSLog(@"Name: %@ : Value: %@,Expires: %@",cookie.name,cookie.value,cookie.expiresDate);
// Now lets go back the other way. We want the server to know we have some cookies available:
// this availableCookies array is going to be the same as the 'all' array above. We could
// have just used the 'all' array,but this shows you how to get the cookies back from the singleton.
NSArray * availableCookies = [[NSHTTPCookieStorage sharedHTTPCookieStorage] cookiesForURL:[NSURL URLWithString:@"http://temp"]];
NSDictionary * headers = [NSHTTPCookie requestHeaderFieldsWithCookies:availableCookies];
// we are just recycling the original request
[request setAllHTTPHeaderFields:headers];
request.URL = [NSURL URLWithString:@"http://temp/gomh/authenticate.py"];
error = nil;
response = nil;
NSData * data = [NSURLConnection sendSynchronousRequest:request returningResponse:&response error:&error];
NSLog(@"The server saw:\n%@",[[[NSString alloc] initWithData:data encoding: NSASCIIStringEncoding] autorelease]);
