NSURL *url = [NSURL URLWithString:@"http://www.baidu.com/s?tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709"]; 
   
  NSLog(@"Scheme: %@", [url scheme]); 
   
  NSLog(@"Host: %@", [url host]); 
   
  NSLog(@"Port: %@", [url port]); 
   
  NSLog(@"Path: %@", [url path]); 
   
  NSLog(@"Relative path: %@", [url relativePath]); 
   
  NSLog(@"Path components as array: %@", [url pathComponents]); 
   
  NSLog(@"Parameter string: %@", [url parameterString]); 
   
  NSLog(@"Query: %@", [url query]); 
   
  NSLog(@"Fragment: %@", [url fragment]); 
   
  NSLog(@"User: %@", [url user]); 
   
  NSLog(@"Password: %@", [url password]); 

2012-08-29 15:52:23.781 NSurl[3560:f803] Scheme: http 
2012-08-29 15:52:32.793 NSurl[3560:f803] Host: www.baidu.com 
2012-08-29 15:52:39.102 NSurl[3560:f803] Port: (null) 
2012-08-29 15:52:42.590 NSurl[3560:f803] Path: /s 
2012-08-29 15:52:52.516 NSurl[3560:f803] Relative path: /s 
2012-08-29 15:53:05.576 NSurl[3560:f803] Path components as array: ( 
  "/", 
  s 
) 
2012-08-29 15:53:32.861 NSurl[3560:f803] Parameter string: (null) 
2012-08-29 15:53:37.528 NSurl[3560:f803] Query: tn=baiduhome_pg&bs=NSRUL&f=8&rsv_bp=1&rsv_spt=1&wd=NSurl&inputT=2709 
2012-08-29 15:53:52.942 NSurl[3560:f803] Fragment: (null) 
2012-08-29 15:53:54.539 NSurl[3560:f803] User: (null) 
2012-08-29 15:53:57.808 NSurl[3560:f803] Password: (null)