post_request_in_objc.m

NSURL *url = [NSURL URLWithString:@"http://api.woyiwang.com:4001/test_post_login"];
NSString *body = [NSString stringWithFormat: @"param1=%@&param2=%@",value1,value2];
NSMutableURLRequest *theRequest = [NSMutableURLRequest requestWithURL:url];	
[theRequest setHTTPMethod:@"POST"];
[theRequest setHTTPBody: [body dataUsingEncoding: NSUTF8StringEncoding]];
NSURLConnection *theConnection = [[NSURLConnection alloc] initWithRequest:theRequest delegate:self];