下載微信支付開發(fā)文檔

1. 注冊WX_AppID

微信開放平臺 -- 注冊WX_AppID

2. 下載WX_PaySDK

下載完成之后，拖入工程中。

微信支付SDK.png

3. 添加SDK依賴的系統(tǒng)庫文件

1. 需要在Link Binary With Libraries中添加的庫文件

添加庫文件.png

庫文件.png

2. 配置URL Schemes

配置URL Schemes.png

4. 需在 AppDelegate.h 中實現(xiàn)的方法

1. 需要重寫兩個方法

#pragma mark - ----- 重寫這兩個的方法

- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options
{
    // 跳轉(zhuǎn)到URL scheme中配置的地址
    //NSLog(@"跳轉(zhuǎn)到URL scheme中配置的地址-->%@",url);
    return [WXApi handleOpenURL:url delegate:self];
}
//支付成功時調(diào)用，回到第三方應(yīng)用中
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation
{
    //    NSLog(@"****************url.host -- %@",url.host);
    if ([url.scheme isEqualToString:WX_APP_ID])
    {
        return  [WXApi handleOpenURL:url delegate:self];
    }
    return NO;
}

2. 添加微信的支付結(jié)果回調(diào)方法

- (void)onResp:(BaseResp *)resp {
    
    //    支付結(jié)果回調(diào)
    if([resp isKindOfClass:[PayResp class]]){
        
        switch (resp.errCode) {
            case WXSuccess:{
                //支付返回結(jié)果，實際支付結(jié)果需要去自己的服務(wù)器端查詢
                [[NSNotificationCenter defaultCenter] postNotificationName:@"WX_PaySuccess" object:nil];
                }
                break;
            case WXErrCodeCommon:
            { //簽名錯誤、未注冊APPID、項目設(shè)置APPID不正確、注冊的APPID與設(shè)置的不匹配、其他異常等
                //                [MBProgressHUD showError:@"支付失敗"];
                NSLog(@"支付失敗");
                [[NSNotificationCenter defaultCenter]
                     postNotificationName:@"WX_PayFail" object:nil];
            }
                break;
            case WXErrCodeUserCancel:
            { //用戶點擊取消并返回
                NSLog(@"取消支付");
                [[NSNotificationCenter defaultCenter]
                     postNotificationName:@"WX_PayCancle" object:nil];
                //                [MBProgressHUD showError:@"取消支付"];
            }
                break;
            case WXErrCodeSentFail:
            { //發(fā)送失敗
                NSLog(@"發(fā)送失敗");
                [[NSNotificationCenter defaultCenter]
                     postNotificationName:@"WX_PayFail" object:nil];
                //                [MBProgressHUD showError:@"發(fā)送失敗"];
            }
                break;
            case WXErrCodeUnsupport:
            { //微信不支持
                NSLog(@"微信不支持");
                [[NSNotificationCenter defaultCenter]
                     postNotificationName:@"WX_PayFail" object:nil];
                //                [MBProgressHUD showError:@"微信不支持"];
            }
                break;
            case WXErrCodeAuthDeny:
            { //授權(quán)失敗
                NSLog(@"授權(quán)失敗");
                [[NSNotificationCenter defaultCenter]
                     postNotificationName:@"WX_PayFail" object:nil];
                //                [MBProgressHUD showError:@"授權(quán)失敗"];
            }
                break;
            default:
                break;
        }  
    }
}

5. 微信支付

#pragma mark - ----- 微信支付

- (IBAction)wx_pay:(id)sender {
    
    /**
        應(yīng)用ID,商戶號,隨機字符串,簽名,商品描述,商品訂單號,總金額,
         用戶端實際ip,通知地址,交易類型,商戶密鑰
     */
    
    NSString *appid,*mch_id,*nonce_str,*sign,*body,*out_trade_no,*total_fee,
    *spbill_create_ip,*notify_url,*trade_type,*partner;
    
    // 需要自己填寫
    appid = WX_AppId;
    mch_id = MCH_ID;
    partner = WX_PartnerKey;
    
    //產(chǎn)生隨機字符串，這里最好使用和安卓端一致的生成邏輯
    nonce_str = [self generateTradeNO];
    body = @"Mac Book Pro 15寸 256G";
    //隨機產(chǎn)生訂單號用于測試，正式使用請換成你從自己服務(wù)器獲取的訂單號
    out_trade_no = [self getOrderNumber];
    //交易價格1表示0.01元，10表示0.1元
    total_fee = @"1";
    
    //獲取本機IP地址，請再wifi環(huán)境下測試，否則獲取的ip地址為error，正確格式應(yīng)該是8.8.8.8
    spbill_create_ip =[getIPhoneIP getIPAddress];
    
    //交易結(jié)果通知網(wǎng)站此處用于測試，隨意填寫，正式使用時填寫正確網(wǎng)站
    notify_url = @"www.baidu.com";
    trade_type = @"App";
    
    // 獲取sign簽名
    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];
    
    // 設(shè)置參數(shù)轉(zhuǎn)換成xml格式
    NSMutableDictionary *dict = [NSMutableDictionary dictionary];
    
    [dict setValue:appid forKey:@"appid"];//公眾賬號ID
    [dict setValue:mch_id forKey:@"mch_id"];//商戶號
    [dict setValue:nonce_str forKey:@"nonce_str"];//隨機字符串
    [dict setValue:sign forKey:@"sign"];//簽名
    [dict setValue:body forKey:@"body"];//商品描述
    [dict setValue:out_trade_no forKey:@"out_trade_no"];//訂單號
    [dict setValue:total_fee forKey:@"total_fee"];//金額
    [dict setValue:spbill_create_ip forKey:@"spbill_create_ip"];//終端IP
    [dict setValue:notify_url forKey:@"notify_url"];//通知地址
    [dict setValue:trade_type forKey:@"trade_type"];//交易類型
    
    NSString *xmlString = [dict XMLString];
    [self http:xmlString];
}

- (void)http:(NSString *)xml {
    
    //這里傳入的xml字符串只是形似xml，但是不是正確是xml格式，需要使用af方法進(jìn)行轉(zhuǎn)義
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    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) {
        return xml;
    }];
    
    // 發(fā)送請求
    [manager POST:WX_PAY_URL parameters:xml success:^(NSURLSessionDataTask *task, id responseObject) {

        NSString *responseString = [[NSString alloc] initWithData:responseObject encoding:NSUTF8StringEncoding];
        
        NSLog(@"\n\nresponseString is %@\n\n",responseString);
        
        NSDictionary *dict = [NSDictionary dictionaryWithXMLString:responseString];

        //判斷返回的許可
        if ([[dict objectForKey:@"result_code"] isEqualToString:@"SUCCESS"] && [[dict objectForKey:@"return_code"] isEqualToString:@"SUCCESS"] ) {
            
            //配置調(diào)起微信支付所需要的參數(shù)
            PayReq *request = [[PayReq alloc] init];
            request.openID = [dict objectForKey:@"appid"];
            //            NSLog(@"-%@-",request.openID);
            request.partnerId = [dict objectForKey:@"mch_id"];
            //            NSLog(@"--%@--",request.partnerId);
            request.prepayId= [dict objectForKey:@"prepay_id"];
            //            NSLog(@"---%@---",request.prepayId);
            request.package = @"Sign=WXPay";
            //            NSLog(@"----%@----",request.package);
            request.nonceStr= [dict objectForKey:@"nonce_str"];
            //            NSLog(@"-----%@-----",request.nonceStr);
            //將當(dāng)前事件轉(zhuǎn)化成時間戳
            NSDate *datenow = [NSDate date];
            NSString *timeSp = [NSString stringWithFormat:@"%ld", (long)[datenow timeIntervalSince1970]];
            UInt32 timeStamp =[timeSp intValue];
            request.timeStamp= timeStamp;
            // 簽名加密
            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];
            // 調(diào)用微信
            [WXApi sendReq:request];
        }else{
            NSLog(@"參數(shù)不正確，請檢查參數(shù)");
        }
  
    } failure:^(NSURLSessionDataTask *task, NSError *error) {
        NSLog(@"error is %@",error);
    }];
}

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