微信支付

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# iOS-微信支付 #

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[风\_雨][96 1]  关注

2016.04.11 20:35\*  字数 93  阅读 537 评论 3 喜欢 0

微信支付(参考：[https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=8\_5][https_pay.weixin.qq.com_wiki_doc_api_app_app.php_chapter_8_5])  
1、导入微信的SDK

![246][]

微信SDK.png

2、添加需要的framework

SystemConfiguration.framework, libz.dylib, libsqlite3.0.dylib, libc++.dylib, Security.framework, CoreTelephony.framework, CFNetwork.framework。 在工程配置中的”Other Linker Flags”中加入”-Objc -all_load”

![252][]

微信的framework.png

3、在info里面的URL Types的配置

![700][]

url type.png

4、注意事项，添加配置  
在build setting里面 Enable Bitcode设为NO  
5、在AppDelegate.m文件中添加的代码

#import "WXApi.h" #import “WXApiObject.h” //遵守协议<WXApiDelegate> - (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions { // Override point for customization after application launch. [WXApi registerApp:WX_AppID withDescription:@"wx59d5d49c9d5f47df"]; return YES; } - (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options { [WXApi handleOpenURL:url delegate:self]; return YES; } - (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation { [WXApi handleOpenURL:url delegate:self]; return YES; } //调用协议方法 #pragma mark - WXApiDelegate 微信 -(void)onResp:(BaseResp *)resp { if ([resp isKindOfClass:[PayResp class]]) { PayResp*response=(PayResp*)resp; // 微信终端返回给第三方的关于支付结果的结构体 switch (response.errCode) { case WXSuccess: { NSLog(@“支付成功"); // 支付成功后发送通知，在控制器里面进行操作 [[NSNotificationCenter defaultCenter] postNotificationName:@"WX_PaySuccess" object:nil]; } break; case WXErrCodeCommon: { //签名错误、未注册APPID、项目设置APPID不正确、注册的APPID与设置的不匹配、其他异常等 NSLog(@"支付失败"); } break; case WXErrCodeUserCancel: { //用户点击取消并返回 NSLog(@"取消支付"); // [MBProgressHUD showError:@"取消支付"]; } break; case WXErrCodeSentFail: { //发送失败 NSLog(@"发送失败"); // [MBProgressHUD showError:@"发送失败"]; } break; case WXErrCodeUnsupport: { //微信不支持 NSLog(@"微信不支持"); // [MBProgressHUD showError:@"微信不支持"]; } break; case WXErrCodeAuthDeny: { //授权失败 NSLog(@"授权失败"); // [MBProgressHUD showError:@"授权失败"]; } break; default: break; } } }

6、支付时需要的代码

//#if 本地自己的方法
    //第一种：
    #pragma mark ---微信支付
    #pragma mark - 微信支付相关方法(此方法支付全是我们写的，可能会与安卓有冲突)
    - (void)weixinChooseAct
    {
        NSString *appid,*mch_id,*nonce_str,*sign,*body,*out_trade_no,*total_fee,*spbill_create_ip,*notify_url,*trade_type,*partner;
        //应用APPID
        appid = WX_AppID;
        //微信支付商户号
        mch_id = MCH_ID;
        //产生随机字符串，这里最好使用和安卓端一致的生成逻辑
        nonce_str =[self generateTradeNO];
        body =@"微信支付时候看到的支付信息";
        //随机产生订单号用于测试，正式使用请换成你从自己服务器获取的订单号
        out_trade_no = [self generateTradeNO];
        //交易价格1表示0.01元，10表示0.1元
        total_fee = @"1";
        
        //获取本机IP地址，请再wifi环境下测试，否则获取的ip地址为error，正确格式应该是8.8.8.8
        spbill_create_ip =[getIPhoneIP getIPAddress];
        //交易结果通知网站此处用于测试，随意填写，正式使用时填写正确网站
        notify_url =@"www.cccuu.com";
        trade_type =@"APP";
        //商户密钥
        partner = WX_PartnerKey;
        //获取sign签名
        DataMD5 *data = [[DataMD5 alloc] initWithAppid:appid mch_id:mch_id nonce_str:nonce_str partner_id:partner body:body out_trade_no:out_trade_no total_fee:total_fee spbill_create_ip:spbill_create_ip notify_url:notify_url trade_type:trade_type];
        sign = [data getSignForMD5];
        //设置参数并转化成xml格式
        NSMutableDictionary *dic = [NSMutableDictionary dictionary];
        [dic setValue:appid forKey:@"appid"];//公众账号ID
        [dic setValue:mch_id forKey:@"mch_id"];//商户号
        [dic setValue:nonce_str forKey:@"nonce_str"];//随机字符串
        [dic setValue:sign forKey:@"sign"];//签名
        [dic setValue:body forKey:@"body"];//商品描述
        [dic setValue:out_trade_no forKey:@"out_trade_no"];//订单号
        [dic setValue:total_fee forKey:@"total_fee"];//金额
        [dic setValue:spbill_create_ip forKey:@"spbill_create_ip"];//终端IP
        [dic setValue:notify_url forKey:@"notify_url"];//通知地址
        [dic setValue:trade_type forKey:@"trade_type"];//交易类型
        // 转换成xml字符串
        NSString *string = [dic XMLString];
        [self http:string];
    }
    
    #pragma mark - 拿到转换好的xml发送请求
    - (void)http:(NSString *)xml
    {
        AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
        //这里传入的xml字符串只是形似xml，但是不是正确是xml格式，需要使用af方法进行转义
        manager.responseSerializer = [[AFHTTPResponseSerializer alloc] init];
        [manager.requestSerializer setValue:@"text/xml; charset=utf-8" forHTTPHeaderField:@"Content-Type"];
        [manager.requestSerializer setValue:@"https://api.mch.weixin.qq.com/pay/unifiedorder" forHTTPHeaderField:@"SOAPAction"];
        [manager.requestSerializer setQueryStringSerializationWithBlock:^NSString *(NSURLRequest *request, NSDictionary *parameters, NSError *__autoreleasing *error) {
    // NSLog(@"para=========%@",parameters);
            return xml;
        }];
        //发起请求
        [manager POST:@"https://api.mch.weixin.qq.com/pay/unifiedorder" parameters:xml success:^(AFHTTPRequestOperation *operation, id responseObject) {
            NSString *responseString = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding] ;
            NSLog(@"responseString is %@",responseString);
            //将微信返回的xml数据解析转义成字典
            NSDictionary *dic = [NSDictionary dictionaryWithXMLString:responseString];
            //判断返回的许可
            if ([[dic objectForKey:@"result_code"] isEqualToString:@"SUCCESS"] && [[dic objectForKey:@"return_code"] isEqualToString:@"SUCCESS"] ) {
                //发起微信支付，设置参数
                PayReq *request = [[PayReq alloc] init];
                request.openID = [dic objectForKey:@"appid"];
    // NSLog(@"-%@-",request.openID);
                request.partnerId = [dic objectForKey:@"mch_id"];
    // NSLog(@"--%@--",request.partnerId);
                request.prepayId= [dic objectForKey:@"prepay_id"];
    // NSLog(@"---%@---",request.prepayId);
                request.package = @"Sign=WXPay";
    // NSLog(@"----%@----",request.package);
                request.nonceStr= [dic objectForKey:@"nonce_str"];
    // NSLog(@"-----%@-----",request.nonceStr);
                //将当前事件转化成时间戳
                NSDate *datenow = [NSDate date];
                NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[datenow timeIntervalSince1970]];
                UInt32 timeStamp =[timeSp intValue];
                request.timeStamp= timeStamp;
                // 签名加密
                DataMD5 *md5 = [[DataMD5 alloc] init];
                request.sign=[md5 createMD5SingForPay:request.openID partnerid:request.partnerId prepayid:request.prepayId package:request.package noncestr:request.nonceStr timestamp:request.timeStamp];
                // 调用微信
                [WXApi sendReq:request];
            }else{
                NSLog(@"参数不正确，请检查参数");
            }
        } failure:^(AFHTTPRequestOperation *operation, NSError *error) {
            NSLog(@"error is %@",error);
        }];
    }
    #pragma mark ==============产生随机订单号==============
    - (NSString *)generateTradeNO
    {
        static int kNumber = 15;
        
        NSString *sourceStr = @"0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        NSMutableString *resultStr = [[NSMutableString alloc] init];
        srand((unsigned)time(0));
        for (int i = 0; i < kNumber; i++)
        {
            unsigned index = rand() % [sourceStr length];
            NSString *oneStr = [sourceStr substringWithRange:NSMakeRange(index, 1)];
            [resultStr appendString:oneStr];
        }
        return resultStr;
    }
    
    //#else 后台做好的返回数据
    //第二种
    //微信支付 （如果之前的操作后台已经完成了，那么直接获取到json数据，进行跳转支付就好）
    - (void)anwxpay:(NSString *)string
    {
        NSLog(@"%@", string);
        NSData *data = [string dataUsingEncoding:NSUTF8StringEncoding];
        NSDictionary *dict = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingAllowFragments error:nil];
        NSLog(@"%@",dict);
        /*{ appid = wxb8db9902f70411f8; noncestr = wPHIPwjygjui4SGi; package = "Sign=WXPay"; partnerid = 1324051001; prepayid = wx20160329094021baff0055270526613015; sign = 779AB865EEC3BC0332A8D0078C7F42B7; timestamp = 1459215621243; }*/
        PayReq *req = [[PayReq alloc] init];
        req.partnerId = dict[@"partnerid"];
        req.openID = dict[@"appid"];
        req.prepayId= dict[@"prepayid"];
        req.package = dict[@"package"];
        req.nonceStr= dict[@"noncestr"];
        req.timeStamp= [dict[@"timestamp"] intValue];
        // 签名加密
        DataMD5 *md5 = [[DataMD5 alloc] init];
        req.sign=[md5 createMD5SingForPay:req.openID partnerid:req.partnerId prepayid:req.prepayId package:req.package noncestr:req.nonceStr timestamp:req.timeStamp];
        // req.sign= dict[@"sign"];
        [WXApi sendReq:req];
    }
    //#endif

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