iOS支付封装（微信/支付宝）
RonaldFerni
8年前
<p style="text-align:center"><img src="https://simg.open-open.com/show/4b058888f1a38c67f99d5dd60f9a637c.jpg"></p> <p>关于支付这块，之前项目用的是Ping++支付，前些日子换成了官方SDK原生支付，为了使用方便，我封装了一下，现分享出来供iOS程序猿(媛)们参考和指导。</p> <p>前言：关于支付必要的配置，官方文档说的很清楚了，这块就不细讲了(挺头疼的，坑多)。以下主要针对的代码封装：</p> <ul> <li> <p>声明一个单例类</p> </li> </ul> <pre> <code class="language-objectivec">static id _instance; +(instancetype)sharedApi { static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ _instance = [[MJPayApi alloc] init]; }); return _instance; }</code></pre> <ul> <li>把支付返回的可能Code码枚举出来</li> </ul> <pre> <code class="language-objectivec">typedef NS_ENUM(NSInteger, PayCode) { WXSUCESS = 1001, /**< 成功 */ WXERROR = 1002, /**< 失败 */ WXSCANCEL = 1003, /**< 取消 */ WXERROR_NOTINSTALL = 1004, /**< 未安装微信 */ WXERROR_UNSUPPORT = 1005, /**< 微信不支持 */ WXERROR_PARAM = 1006, /**< 支付参数解析错误 */ ALIPAYSUCESS = 1101, /**< 支付宝支付成功 */ ALIPAYERROR = 1102, /**< 支付宝支付错误 */ ALIPAYCANCEL = 1103, /**< 支付宝支付取消 */ };</code></pre> <p>微信支付</p> <ul> <li> <p>发起微信支付</p> </li> </ul> <pre> <code class="language-objectivec">- (void)wxPayWithPayParam:(NSString *)pay_param success:(void (^)(PayCode code))successBlock failure:(void (^)(PayCode code))failBlock { self.PaySuccess = successBlock; self.PayError = failBlock; //Json解析 NSData * data = [pay_param dataUsingEncoding:NSUTF8StringEncoding]; NSError *error; NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:&error]; if(error != nil) { failBlock(WXERROR_PARAM); return ; } //设置必要的参数 NSString *appid = dic[@"appid"]; NSString *partnerid = dic[@"partnerid"]; NSString *prepayid = dic[@"prepayid"]; NSString *package = @"Sign=WXPay"; NSString *noncestr = dic[@"noncestr"]; NSString *timestamp = dic[@"timestamp"]; NSString *sign = dic[@"paySign"]; [WXApi registerApp:appid]; if(![WXApi isWXAppInstalled]) { failBlock(WXERROR_NOTINSTALL); return ; } if (![WXApi isWXAppSupportApi]) { failBlock(WXERROR_UNSUPPORT); return ; } //发起微信支付 PayReq* req = [[PayReq alloc] init]; //微信分配的商户号 req.partnerId = partnerid; //微信返回的支付交易会话ID req.prepayId = prepayid; // 随机字符串，不长于32位 req.nonceStr = noncestr; // 时间戳 req.timeStamp = timestamp.intValue; //暂填写固定值Sign=WXPay req.package = package; //签名 req.sign = sign; [WXApi sendReq:req]; //日志输出 MJLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",appid,req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign ); }</code></pre> <ul> <li> <p>支付回调</p> </li> </ul> <pre> <code class="language-objectivec">// 微信终端返回给第三方的关于支付结果的结构体 - (void)onResp:(BaseResp *)resp { if ([resp isKindOfClass:[PayResp class]]) { switch (resp.errCode) { case WXSuccess: self.PaySuccess(WXSUCESS); break; case WXErrCodeUserCancel: //用户点击取消并返回 self.PayError(WXSCANCEL); break; default: //剩余都是支付失败 self.PayError(WXERROR); break; } } }</code></pre> <ul> <li> <p>单例类回调处理</p> </li> </ul> <pre> <code class="language-objectivec">-(BOOL) handleOpenURL:(NSURL *) url { //([url.host isEqualToString:@"pay"]) //微信支付 return [WXApi handleOpenURL:url delegate:self]; }</code></pre> <p>支付宝支付</p> <ul> <li> <p>支付宝支付</p> </li> </ul> <pre> <code class="language-objectivec">-(void)aliPayWithPayParam:(NSString *)pay_param success:(void (^)(PayCode code))successBlock failure:(void (^)(PayCode code))failBlock { self.PaySuccess = successBlock; self.PayError = failBlock; NSString * appScheme = @"APP Scheme"; //注：若公司服务器返回的json串可以直接使用，就不用下面的json解析了 NSData *jsonData = [pay_param dataUsingEncoding:NSUTF8StringEncoding]; NSError *err; NSDictionary *dic = [NSJSONSerialization JSONObjectWithData:jsonData options:NSJSONReadingMutableContainers error:&err]; if(err) { NSLog(@"json解析失败：%@",err); } NSString * orderSS = [NSString stringWithFormat:@"app_id=%@&biz_content=%@&charset=%@&method=%@&sign_type=%@×tamp=%@&version=%@&format=%@¬ify_url=%@",dic[@"app_id"],dic[@"biz_content"],dic[@"charset"],dic[@"method"],dic[@"sign_type"],dic[@"timestamp"],dic[@"version"],dic[@"format"],dic[@"notify_url"]]; NSString * signedStr = [self urlEncodedString:dic[@"sign"]]; NSString * orderString = [NSString stringWithFormat:@"%@&sign=%@",orderSS, signedStr]; // MJLog(@"===%@",orderSS); [[AlipaySDK defaultService] payOrder:orderString fromScheme:appScheme callback:^(NSDictionary *resultDic) { MJLog(@"----- %@",resultDic); NSInteger resultCode = [resultDic[@"resultStatus"] integerValue]; switch (resultCode) { case 9000: //支付成功 successBlock(ALIPAYSUCESS); break; case 6001: //支付取消 failBlock(ALIPAYCANCEL); break; default: //支付失败 failBlock(ALIPAYERROR); break; } }]; } //url 编码 - (NSString*)urlEncodedString:(NSString *)string { NSString * encodedString = (__bridge_transfer NSString*) CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (__bridge CFStringRef)string, NULL, (__bridge CFStringRef)@"!*'();:@&=+$,/?%#[]", kCFStringEncodingUTF8 ); return encodedString; }</code></pre> <ul> <li> <p>单例类回调处理</p> </li> </ul> <pre> <code class="language-objectivec">- (BOOL) handleOpenURL:(NSURL *) url { if ([url.host isEqualToString:@"safepay"]) { // 支付跳转支付宝钱包进行支付，处理支付结果 [[AlipaySDK defaultService] processOrderWithPaymentResult:url standbyCallback:^(NSDictionary *resultDic) { //【由于在跳转支付宝客户端支付的过程中，商户app在后台很可能被系统kill了，所以pay接口的callback就会失效，请商户对standbyCallback返回的回调结果进行处理,就是在这个方法里面处理跟callback一样的逻辑】 NSLog(@"result = %@",resultDic); NSInteger resultCode = [resultDic[@"resultStatus"] integerValue]; switch (resultCode) { case 9000: //支付成功 self.PaySuccess(ALIPAYSUCESS); break; case 6001: //支付取消 self.PaySuccess(ALIPAYCANCEL); break; default: //支付失败 self.PaySuccess(ALIPAYERROR); break; } }]; // 授权跳转支付宝钱包进行支付，处理支付结果 [[AlipaySDK defaultService] processAuth_V2Result:url standbyCallback:^(NSDictionary *resultDic) { MJLog(@"result = %@",resultDic); // 解析 auth code NSString *result = resultDic[@"result"]; NSString *authCode = nil; if (result.length>0) { NSArray *resultArr = [result componentsSeparatedByString:@"&"]; for (NSString *subResult in resultArr) { if (subResult.length > 10 && [subResult hasPrefix:@"auth_code="]) { authCode = [subResult substringFromIndex:10]; break; } } } MJLog(@"授权结果 authCode = %@", authCode?:@""); }]; return YES; } }</code></pre> <p>支付调用</p> <p>好了，哪里用到写哪里</p> <ul> <li> <p>微信</p> </li> </ul> <pre> <code class="language-objectivec">[[MJPayApi sharedApi]wxPayWithPayParam:data success:^(PayCode code) { [self payStatus:code Co_nbr:co_nbr]; } failure:^(PayCode code) { [self payStatus:code Co_nbr:co_nbr]; }];</code></pre> <ul> <li> <p>支付宝</p> </li> </ul> <pre> <code class="language-objectivec">[[MJPayApi sharedApi]aliPayWithPayParam:data success:^(PayCode code) { [self payStatus:code Co_nbr:co_nbr]; } failure:^(PayCode code) { [self payStatus:code Co_nbr:co_nbr]; }];</code></pre> <p>是不是很简单那~~~</p> <p> </p> <p>来自：http://www.jianshu.com/p/6105550fe070</p> <p> </p>