NSString *urlString = @“http://detail.tmall.com/item.htm?spm=a215v.7217581.610138.10.sO6nZp&id=36615660686&areaId=410100&cat_id=2&rn=ebe1860b08257aacbac424ed12d5208c&user_id=1098342976&is_b=1”;
NSURL *url;
if([urlString rangeOfString:@"detail.tmall."].location != NSNotFound)   //判斷Url是否是天貓商品的連結
{
    NSRange range = [urlString rangeOfString:@"id="]; //在URL中找到商品的ID
    if(range.location != NSNotFound)
    {
        NSString *productID = [urlString substringWithRange:NSMakeRange(range.location + 3, 11)];
        NSString *appUrl = [NSString stringWithFormat:@"tmall://tmallclient/?{\"action\":\"item:id=%@\"}", productID];
        url = [NSURL URLWithString:[appUrl stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
        if ([[UIApplication sharedApplication] canOpenURL:url])
        {
            // 如果已經安裝天貓客戶端，就使用客戶端開啟連結
            [[UIApplication sharedApplication] openURL:url];
        }
        else
        {
            //客戶手機上沒有裝天貓客戶端，這時啟動瀏覽器以網頁的方式瀏覽該商品。
            url = [NSURL URLWithString:[urlString stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];
            [[UIApplication sharedApplication] openURL:url];
        }
    }
}