iOS--支付宝环境集成

1.下载支付宝SDK以及Demo

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

2.新建文件夹“AliSDK”，将压缩包内的文件拷贝到该文件夹下，完成后如下图所示：

3.将文件夹拷贝到项目中，

4.执行完第二步后项目目录里会出现蓝色的AliSDK分组。然后添加相应的库文件，添加完成后如下图所示：

5.拷贝完成后编译会出现如下错误：只需要在相应的类内添加：#import <Foundation/Foundation.h>即可解决

6.添加完成后编译仍然有错误：

解决办法：Targets->Build Settings->Header Search Path中添加1中建立的aliSDK文件夹的路径（找到alisdk路径拖拽到这儿就好了）：

此时问题解决了。

7.整理项目目录，把添加的库文件移动的framework分组内，ali也移动到framework分组内，如下所示：

8.新建Product类，Product.h内如下所示：

#import <Foundation/Foundation.h>

@interface Product : NSObject{
@private
    float     _price;
    NSString *_subject;
    NSString *_body;
    NSString *_orderId;
}

@property (nonatomic, assign) float price;
@property (nonatomic, copy) NSString *subject;
@property (nonatomic, copy) NSString *body;
@property (nonatomic, copy) NSString *orderId;

@end

9.viewController.h

#import "ViewController.h"
#import "Product.h"
#import "Order.h"
#import "AliSDK/Util/DataSigner.h"
#import <AlipaySDK/AlipaySDK.h>
@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}
- (IBAction)clickPay:(UIButton *)sender {
    [self testPay];
}

-(void)testPay{
    /*
     *点击获取prodcut实例并初始化订单信息
     */
    Product *product = [[Product alloc]init];
    /*
     *商户的唯一的parnter和seller。
     *签约后，支付宝会为每个商户分配一个唯一的 parnter 和 seller。
     */

    /*============================================================================*/
    /*=======================需要填写商户app申请的===================================*/
    /*============================================================================*/
    NSString *partner = @"";
    NSString *seller = @"";
    NSString *privateKey = @"";
    /*============================================================================*/
    /*============================================================================*/
    /*============================================================================*/

    //partner和seller获取失败,提示
    if ([partner length] ==  ||
        [seller length] ==  ||
        [privateKey length] == )
    {
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"提示"
                                                        message:@"缺少partner或者seller或者私钥。"
                                                       delegate:self
                                              cancelButtonTitle:@"确定"
                                              otherButtonTitles:nil];
        [alert show];

        return;
    }

    /*
     *生成订单信息及签名
     */
    //将商品信息赋予AlixPayOrder的成员变量
    Order *order = [[Order alloc] init];
    order.partner = partner;
    order.sellerID = seller;
    order.outTradeNO = [self generateTradeNO]; //订单ID（由商家自行制定）
    order.subject = product.subject; //商品标题
    order.body = product.body; //商品描述
    order.totalFee = [NSString stringWithFormat:@"%.2f",product.price]; //商品价格
    order.notifyURL =  @"http://www.xxx.com"; //回调URL

    order.service = @"mobile.securitypay.pay";
    order.paymentType = @"";
    order.inputCharset = @"utf-8";
    order.itBPay = @"30m";
    order.showURL = @"m.alipay.com";

    //应用注册scheme,在AlixPayDemo-Info.plist定义URL types
    NSString *appScheme = @"alisdkdemo";

    //将商品信息拼接成字符串
    NSString *orderSpec = [order description];
    NSLog(@"orderSpec = %@",orderSpec);

    //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UrlEncode
    id<DataSigner> signer = CreateRSADataSigner(privateKey);
    NSString *signedString = [signer signString:orderSpec];

    //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
    NSString *orderString = nil;
    if (signedString != nil) {
        orderString = [NSString stringWithFormat:@"%@&sign=\"%@\"&sign_type=\"%@\"",
                       orderSpec, signedString, @"RSA"];

        [[AlipaySDK defaultService] payOrder:orderString fromScheme:appScheme callback:^(NSDictionary *resultDic) {
            NSLog(@"reslut = %@",resultDic);
        }];

    }

}
/*
 生成订单信息
 */
- (NSString *)generateTradeNO
{
    static int kNumber = ;

    NSString *sourceStr = @"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
    NSMutableString *resultStr = [[NSMutableString alloc] init];
    srand((unsigned)time());
    for (int i = ; i < kNumber; i++)
    {
        unsigned index = rand() % [sourceStr length];
        NSString *oneStr = [sourceStr substringWithRange:NSMakeRange(index, )];
        [resultStr appendString:oneStr];
    }
    return resultStr;
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

10.appdelegate.m中添加如下代码：

- (BOOL)application:(UIApplication *)application
            openURL:(NSURL *)url
  sourceApplication:(NSString *)sourceApplication
         annotation:(id)annotation {

    if ([url.host isEqualToString:@"safepay"]) {
        //跳转支付宝钱包进行支付，处理支付结果
        [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) {
            NSLog(@"result = %@",resultDic);
        }];
    }
    return YES;
}

// NOTE: 9.0以后使用新API接口
- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString*, id> *)options
{
    if ([url.host isEqualToString:@"safepay"]) {
        //跳转支付宝钱包进行支付，处理支付结果
        [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) {
            NSLog(@"result = %@",resultDic);
        }];
    }
    return YES;
}

大功告成！！