如何在json web服务中传递参数和参数?

-(void)gettop10button
{   
    NSURL *url=[NSURL URLWithString:@"https://appabn.com/iphone/files/api/api.php?q=helo_users&u_id=5&page=1"];  // web api link

    NSURLRequest *request=[NSURLRequest requestWithURL:url];
    connection=[NSURLConnection connectionWithRequest:request delegate:self];
-(void)gettop10button
{   
    NSURL *url=[NSUR