开发环境xcode7.1 运行环境 IOS9.1

到支付宝面面下载IOS的移动支付功能的SDK（Android和IOS是同一个zip文件下）

http://doc.open.alipay.com/doc2/detail?treeId=54&articleId=103419&docType=1

然后申请商家支付宝，得到相应的private_key和partner,seller

IOS的资料在SDK文件夹的“客户端demo”下的IOS文件夹下

• 复制AlipaySDK.bundle和AlipaySDK.framework到项目下

• 复制IOS Demo下的两个.a文件到项目下

• 复制iOS Demo下的openssl文件夹，Util文件夹，Order.h，Order.m（省得自己在swift中定义订单）文件到项目中

• 在xcode中创建一个项目AlipayDemo，在项目中Add Files to AlipayDemo所有的.a文件和openssl文件夹，Util文件夹，Order.h，Order.m，此时系统提示创建头文件，选择允许创建(可以手动添加一个.h文件作为头文件)

  

• 如果在基于IOS9.0编译，在info.list中添加如下xml代码（info.list以SourceCode形式打开）

<key>NSAppTransportSecurity</key><dict><key>NSExceptionDomains</key><dict><key>alipay.com</key><dict><!--Include to allowsubdomains--><key>NSIncludesSubdomains</key><true/><!--Include to allowinsecure HTTP requests--><key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key><true/><!--Include to specifyminimum TLS version--><key>NSTemporaryExceptionMinimumTLSVersion</key><string>TLSv1.0</string> <key>NSTemporaryExceptionRequiresForwardSecrecy</key><false/></dict></dict>
</dict>

• 增加头文件

Util中的base64.h，openssl_wrapper.h添加#import <Foundation/Foundation.h>，给支付宝AlipaySDK.h添加#import <Foundation/Foundation.h>和#import<UIKit/UIKit.h>

• 设置Build Settings

查找Bitcode，把Yes改成No

查打Header SearchPaths，点小+号，添加$(SRCROOT)/AlipayDemo

• 在info的URL Types中添加一个GSWAlipayDemo的节点，以备代码中Order的appScheme使用。

• 代码实现

import UIKit
class ViewController: UIViewController {override func viewDidLoad() {super.viewDidLoad()let but = UIButton(type: UIButtonType.System);but.setTitle("
支付", forState: UIControlState.Normal);but.backgroundColor = UIColor.greenColor();but.frame = CGRect(x: 10, y: 100, width: 100, height: 30);but.addTarget(self, action: "click", forControlEvents: UIControlEvents.TouchUpInside);self.view.addSubview(but);    }func click(){AliplayFunc();print("click")}var TicketTotalprice:Float=0.01;//支付金额var seller:String="支付宝申请的seller";var partner:String="支付宝申请的partner";var privateKey:String = "替换支付申请的privet_key";func AliplayFunc(){        let Orders = Order()        Orders.partner = partner        Orders.seller = seller        Orders.productName = "ProductName";        Orders.productDescription = "this is a goods";        Orders.amount = NSString(format: "%.2f",TicketTotalprice) as String ;//（价格必须小数点两位）        Orders.tradeNO = "DJ0000000001" ;       Orders.notifyURL = "http://selftweb.com";        Orders.service = "mobile.securitypay.pay";        Orders.paymentType = "1";        Orders.inputCharset = "utf-8";        Orders.itBPay = "30m";        Orders.showUrl = "m.alipay.com";        let appScheme = "GSWAPayDemo";//在        let orderSpec = Orders.description;        let signer = CreateRSADataSigner(privateKey);        let signedString = signer.signString(orderSpec);        let orderString = "\(orderSpec)&sign=\"\(signedString)\"&sign_type=\"RSA\"";     AlipaySDK.defaultService().payOrder(orderString, fromScheme: appScheme, callback: { (resultDic) -> Void in            print("reslut = \(resultDic)");            if let Alipayjson = resultDic as? NSDictionary{                let resultStatus = Alipayjson.valueForKey("resultStatus") as! String if resultStatus == "9000"{                    print("OK")}else if resultStatus == "8000" {                    print("正在处理中")                    self.navigationController?.popViewControllerAnimated(true) }else if resultStatus == "4000" {print("订单支付失败");self.navigationController?.popViewControllerAnimated(true)}else if resultStatus == "6001" {print("用户中途取消")self.navigationController?.popViewControllerAnimated(true)}else if resultStatus == "6002" {print("网络连接出错")self.navigationController?.popViewControllerAnimated(true)}}})}override func didReceiveMemoryWarning() {super.didReceiveMemoryWarning()// Dispose of any resources that can be recreated.}
}

Demo源代码