iOS-如何集成支付宝

 1 // 2 //选中商品调用支付宝快捷支付 3 // 4 - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath 5 { 6     /* 7      *点击获取PRodcut实例并初始化订单信息 8      */ 9     Product *product = [_products objectAtIndex:indexPath.row];10     11     /*12      *商户的唯一的parnter和seller。13      *本demo将parnter和seller信息存于（AlixPayDemo-Info.plist）中,外部商户可以考虑存于服务端或本地其他地方。14      *签约后，支付宝会为每个商户分配一个唯一的 parnter 和 seller。15      */16     //如果partner和seller数据存于其他位置,请改写下面两行代码17     NSString *partner = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"Partner"];18     NSString *seller = [[NSBundle mainBundle] objectForInfoDictionaryKey:@"Seller"];19     20     //partner和seller获取失败,提示21     if ([partner length] == 0 || [seller length] == 0)22     {23         UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"24                                                         message:@"缺少partner或者seller。" 25                                                        delegate:self 26                                               cancelButtonTitle:@"确定" 27                                               otherButtonTitles:nil];28         [alert show];29         [alert release];30         return;31     }32     33     /*34      *生成订单信息及签名35      *由于demo的局限性，本demo中的公私钥存放在AlixPayDemo-Info.plist中,外部商户可以存放在服务端或本地其他地方。36      */37     //将商品信息赋予AlixPayOrder的成员变量38     AlixPayOrder *order = [[AlixPayOrder alloc] init];39     order.partner = partner;40     order.seller = seller;41     order.tradeNO = [self generateTradeNO]; //订单ID（由商家自行制定）42     order.productName = product.subject; //商品标题43     order.productDescription = product.body; //商品描述44     order.amount = [NSString stringWithFormat:@"%.2f",product.price]; //商品价格45     order.notifyURL =  @"http://www.xxx.com"; //回调URL46     47     //应用注册scheme,在AlixPayDemo-Info.plist定义URL types,用于快捷支付成功后重新唤起商户应用48     NSString *appScheme = @"AlixPayDemo"; 49     50     //将商品信息拼接成字符串51     NSString *orderSpec = [order description];52     NSLog(@"orderSpec = %@",orderSpec);53     54     //获取私钥并将商户信息签名,外部商户可以根据情况存放私钥和签名,只需要遵循RSA签名规范,并将签名字符串base64编码和UrlEncode55     id<DataSigner> signer = CreateRSADataSigner([[NSBundle mainBundle] objectForInfoDictionaryKey:@"RSA private key"]);56     NSString *signedString = [signer signString:orderSpec];57     58     //将签名成功字符串格式化为订单字符串,请严格按照该格式59     NSString *orderString = nil;60     if (signedString != nil) {61         orderString = [NSString stringWithFormat:@"%@&sign=/"%@/"&sign_type=/"%@/"",62                                  orderSpec, signedString, @"RSA"];63         64         //获取快捷支付单例并调用快捷支付接口65         AlixPay * alixpay = [AlixPay shared];66         int ret = [alixpay pay:orderString applicationScheme:appScheme];67         68         if (ret == kSPErrorAlipayClientNotInstalled) {69             UIAlertView * alertView = [[UIAlertView alloc] initWithTitle:@"提示" 70                                                                  message:@"您还没有安装支付宝快捷支付，请先安装。" 71                                                                 delegate:self 72                                                        cancelButtonTitle:@"确定" 73                                                        otherButtonTitles:nil];74             [alertView setTag:123];75             [alertView show];76             [alertView release];77         }78         else if (ret == kSPErrorSignError) {79             NSLog(@"签名错误！");80         }81 82     }83 84     [tableView deselectRowAtIndexPath:indexPath animated:YES];85 }