1、HTTP HEAD方法NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url cachePolicy:0 timeoutInterval:kTimeout];request.HTTPMethod = @"HEAD";[NSURLConnection sendAsynchronousRequest:request queue:self.myQueue completionHandler:^(NSURLResponse *response, NSData *data, NSError *connec ......
本文摘自 :https://www.cnblogs.com/


