【移动应用开发技术】支付宝,微信支付集成

【移动应用开发技术】支付宝,微信支付集成

首先要弄个支付相关的类@interface

MOIPayModel

:

NSObject

//channel

:1：支付宝

2：微信

@property

NSInteger

channel;

//支付金额

(分)

@property

float

price;

@property

(strong

,

nonatomic)

NSString

*productName;

//商品标题

@property

(strong

,

nonatomic)

NSString

*productDescription;

//商品描述

//后台系统订单ID

@property

(nonatomic)

long

long

orderId;

//支付宝属性

/**

PID

*/

@property

(strong

,

nonatomic)

NSString

*partner;

/**

收款支付宝账号

*/

@property

(strong

,

nonatomic)

NSString

*seller;

/**

私钥

*/

@property

(strong

,

nonatomic)

NSString

*privateKey;

/**

返回URL

*/

@property

(strong

,

nonatomic)

NSString

*notifyURL;

//微信支付属性

/**

商户ID

*/

@property

(nonatomic,

retain)

NSString

*partnerId;

/**

预支付ID

*/

@property

(nonatomic,

retain)

NSString

*prepayId;

/**

商户密钥

*/

@property

(nonatomic,

retain)

NSString

*spKey;

@end先说下支付宝的支付流程吧，其实支付宝的并不需要什么动态信息，可以把所有的信息都写在客户端里，不过这样很不安全，所以还是要向自己的服务器请求相关信息。_MOIPayModel.notifyURL

=

@"返回URL";

_MOIPayModel.partner

=

@"PID";

_MOIPayModel.seller

=

@"收款支付宝账号";

_MOIPayModel.privateKey

=

@"商户密钥";typedef

void(^MOIPayOderUtilCompletion)(MOIPayModel

*payModel

,

id

message);

typedef

void(^MOIPayOderUtilFailed)(MOIPayModel

*payModel

,

id

message);

static

NSString

*appScheme

=

@"调用支付的app注册在info.plist中的scheme";

-(void)goToAliPayFor:(MOIPayModel

*)_payModel

completion:(MOIPayOderUtilCompletion)_payCompletion

failed:(MOIPayOderUtilFailed)_payFailed{

if

(!_payModel.partner

||

!_payModel.seller

||

!_payMductName

||

!_payModel.notifyURL)

{

NSLog(@"缺少信息,支付将失败");

}

//将商品信息赋予AlixPayOrder的成员变量

Order

*order

=

[[Order

alloc]

init];

order.partner

=

_payModel.partner;

order.seller

=

_payModel.seller;

order.tradeNO

=

_payModel.orderNO;

//订单ID（由商家自行制定）

ductName

=

_payMductName;

//商品标题

ductDescription

=

_payMductDescription;

//商品描述

order.amount

=

[NSString

stringWithFormat:@"%g",_payModel.price/100.f];

//商品价格

order.notifyURL

=

_payModel.notifyURL;

//回调URL

order.service

=

@"mobile.securitypay.pay";

order.paymentType

=

@"1";

order.inputCharset

=

@"utf-8";

order.itBPay

=

@"30m";

order.showUrl

=

@"";

//将商品信息拼接成字符串

NSString

*orderSpec

=

[order

description];

//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(_payModel.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)

{

int

resultStatus

=

[resultDic

intValueForKey:@"resultStatus"];

switch

(resultStatus)

{

case

9000:

_payCompletion(nil,nil);

break;

default:

{

_payFailed(nil,([resultDic

safeObjectForKey:@"memo"]

?

:

@"支付中断"));

}

break;

}

}];

}else{

_payFailed(nil,@"支付中断");

}

}微信支付流程需要先拿到一个‘预支付id’，通常这个id是由后台请求微信服务器得到的，具体的接口什么的我就不写了，毕竟不是客户端的事情。最后需要拿到几个重要信息_MOIPayModel.partnerId

=

@"商户ID"

_MOIPayModel.prepayId

=

@"预支付ID";

_MOIPayModel.spKey

=

@"商户密钥";这三个重要信息都有了把信息拼起来创建一个SIGN签名就可以向微信发请求了PayReq

*request

=

[[PayReq

alloc]

init];

request.partnerId

=

_payModel.partnerId;

request.prepayId

=

_payModel.prepayId;

request.package

=

@"Sign=WXPay";

//随机串

request.nonceStr

=

[self

ret32bitString];

NSDate

*datenow

=

[NSDate

date];

NSString

*timeSp

=

[NSString

stringWithFormat:@"%ld",

(long)[datenow

timeIntervalSince1970]];

UInt32

timeStamp

=[timeSp

intValue];

request.timeStamp=

timeStamp;

NSDictionary

*_dic

=

@{@"appid":kWXAppID,

@"partnerid":request.partnerId,

@"prepayid":request.prepayId,

@"package":request.package,

@"noncestr":request.nonceStr,

@"timestamp":@(request.timeStamp)//时间戳

};

request.sign

=

[self

createMd5Sign:[_dic

mutableCopy]

spKey:_payModel.spKey];

if

(![WXApi

sendReq:request])

{

NSLog(@"发起支付失败");

}回调结果-(void)

onResp:(BaseResp*)resp;

{

if

([resp

isKindOfClass:[PayResp

class]]){

PayResp*response=(PayResp*)resp;

switch(response.errCode){

case

WXSuccess:

NSLog(@"微信支付成功");

break;

case

WXErrCodeUserCancel:

NSLog(@"交易取消");

break;

default:

NSLog(@"支付失败");

break;

}

}

}用到的一些方法//创建sign签名

-

(NSString

*)createMd5Sign:(NSMutableDictionary

*)dict

spKey:(NSString

*)_spKey

{

NSMutableString

*contentString

=[NSMutableString

string];

NSArray

*keys

=

[dict

allKeys];

//按字母顺序排序

NSArray

*sortedArray

=

[keys

sortedArrayUsingComparator:^NSComparisonResult(id

obj1,

id

obj2)

{

return

[obj1

compare:obj2

options:NSNumericSearch];

}];

//拼接字符串

for

(NSString

*categoryId

in

sortedArray)

{

if

(

![categoryId

isEqualToString:@"sign"]

&&

![categoryId

isEqualToString:@"key"]

)

{

[contentString

appendFormat:@"%@=%@&",

categoryId,

[dict

objectForKey:categoryId]];

}

}

//添加key字段

[contentString

appendFormat:@"key=%@",

_spKey];

//得到MD5

sign签名

NSString

*md5Sign

=[self

md5HexDigest:contentString];

return

[md5Sign

uppercaseString];

}

//MD5

-

(NSString

*)md5HexDigest:(NSString*)password

{

if

(!password

||

![password

isKindOfClass:[NSString

class]]

||

password.length

==

0)

{

return

@"";

}

const

char

*original_str

=

[password

UTF8String];

un