iOS版微信開發小結(微信支付,APP跳轉微信公衆號)

最近公司心血來潮,一心要搞微信。廢話很少說,直接上乾貨。

開發前準備:

一、在微信開發者平臺獲取開發者認證:(一年300元人民幣)
PS:具體流程按照微信流程指示操做便可,在這就不廢話了。php

微信開發者平臺_帳號中心.jpeg

二、下載微信最新的SDK,引入到工程裏邊api

Xcode_目錄文件.png

三、導入相關係統庫及文件,不導入會報錯瀏覽器

相關係統庫.png

四、在你的工程文件中選擇Build Setting,在Search Paths中添加 libWeChatSDK.a, WXApi.h, WXApiObject.h 三個文件所在位置安全

SearchPath.png

五、配置info.plist文件服務器

info配置.png

六、URL type設置
選中你的工程設置項,選中targets一欄,在info標籤欄的URL type 添加URL scheme 爲你所註冊的應用程序id微信

URL_Types.png

1.app跳轉微信

一、app跳轉微信公衆號
在工程中添加pch文件,導入 WXApi.h頭文件,並在你須要跳轉的界面增長WXApiDelegate協議
在你的跳轉方法中添加一下代碼:微信開發

JumpToBizProfileReq *req = [JumpToBizProfileReq new];
req.username = @"gh_64a69d298ecf"; // 原始ID
req.profileType = WXBizProfileType_Normal;
req.extMsg = @"";
[WXApi sendReq:req];

這樣APP就能夠掉起微信界面,進入微信公衆號(若是以前沒有關注過此微信公衆號,就會進入微信公衆號的關注界面)app

二、APP跳轉到微信相關的其餘網頁(如微信小店相關商品信息界面)異步

OpenWebviewReq *req = [OpenWebviewReq new];
req.url = @"須要微信內置瀏覽器打開的網址";
[WXApi sendReq:req];

PS:
原始ID: 申請公共號時系統給你的惟一編號,有此 id你更改微信號後依然能綁定公共號
APPID: 開通 api 服務時,系統給你的惟一編號
APPSECRET: 通俗一點兒來講就是密鑰
微信支付

二、微信支付

微信支付流程.png

流程可能看起來有點複雜,下面我儘可能給大家配圖來講明

一、APP客戶端下單(選擇商品)

chooseProduct.jpeg

二、APP將商品數據傳給後臺服務器,請求生成支付訂單

生成訂單信息.jpeg

三、後臺調用統一下單API向微信服務器發送請求生成預付單,並生成一個prepay_id返回給後臺,後臺再將prepay_id放回給客戶端,成功生成訂單信息

成功生成訂單.jpeg

生成訂單相關代碼

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *signParaDic = @{@"schoolId":schoolId,
                                @"studentId":studentId,
                                @"parentId":parentId,
                                @"parentTel":phone,
                                @"totalFee":[NSString stringWithFormat:@"%i",payProduct.totalFee],
                                @"productId":[NSString stringWithFormat:@"%i",payProduct.productId],
                                @"productName":payProduct.productName};
NSString *sign = [EncodeParameter md5:signParaDic];
NSDictionary *parameters = @{@"schoolId":schoolId,
                                @"parentId":parentId,
                                @"studentId":studentId,
                                @"parentTel":phone,
                                @"totalFee":[NSString stringWithFormat:@"%i",payProduct.totalFee],
                                @"productId":[NSString stringWithFormat:@"%i",payProduct.productId],
                                @"productName":payProduct.productName,
                                @"sign":sign};
NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:WechatPlaceOrderAPI parameters:parameters error:nil];

_palceOrderOperation = [manager HTTPRequestOperationWithRequest:request  success:^(AFHTTPRequestOperation *operation, id responseObject) {
//
NSDictionary *resDic = (NSDictionary *)responseObject;
NSNumber *code = [resDic objectForKey:@"result"];
NSString *msg = [resDic objectForKey:@"message"];
    if ([code integerValue] == Success) {
        WeChatPreOrder *preOrder = [[WeChatPreOrder alloc] initWithDic:resDic];
         if (self.delegate && [self.delegate respondsToSelector:@selector(placeOrderSucess:preOder:)]) {
               [self.delegate placeOrderSucess:self preOder:preOrder];
         }
    } else if ([code integerValue] == 300) {
          if (self.delegate && [self.delegate respondsToSelector:@selector(placeOrderFailed:error:)]) {
          [self.delegate placeOrderFailed:self error:msg];
    }
  }else {
        if (self.delegate && [self.delegate respondsToSelector:@selector(placeOrderFailed:error:)]) {
            [self.delegate placeOrderFailed:self error:RequestError];
        }
    }
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
    if (self.delegate && [self.delegate respondsToSelector:@selector(placeOrderFailed:error:)]) {
        [self.delegate placeOrderFailed:self error:RequestError];
    }
}];

四、APP調用SDK打開微信,進行支付
微信客戶端向微信服務器發起支付請求並返回支付結果(中間交互參數prepay_id,微信服務器要驗證這個參數是否跟以前的prepay_id一致)

微信支付.png

掉起微信支付相關代碼

PayReq* req             = [[PayReq alloc] init];
req.partnerId           = weChatPreOrder.partnerId;
req.prepayId            = weChatPreOrder.prepayId;
req.nonceStr            = weChatPreOrder.noncestr;
req.timeStamp           = [weChatPreOrder.timestamp intValue];
req.package             = weChatPreOrder.package;
req.sign                = weChatPreOrder.sign;
[WXApi sendReq:req];

五、用戶輸入支付密碼後,微信客戶端跟微信服務器交互,確認支付

輸入密碼進行支付.png

六、微信服務器將支付結果返回給微信客戶端,並異步發送支付結果給咱們後臺

Uploading 客戶端支付結果_830499.png . . .

七、客戶端能夠調用後臺查詢支付訂單接口,查詢是否支付成功,並顯示支付結果

客戶端支付結果.png

查詢訂單相關代碼

AFHTTPRequestOperationManager *manager = [AFHTTPRequestOperationManager manager];
NSDictionary *signParaDic = @{@"schoolId":[BCHTTPRequest schoolId],@"parentId":[BCHTTPRequest getUserId]};
NSString *sign = [EncodeParameter md5:signParaDic];
NSDictionary *parameters = @{@"schoolId":[BCHTTPRequest schoolId],@"parentId":[BCHTTPRequest getUserId],@"sign":sign};
NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:QueryOrderAPI parameters:parameters error:nil];

_operation = [manager HTTPRequestOperationWithRequest:request  success:^(AFHTTPRequestOperation *operation, id responseObject) {
//
NSDictionary *resDic = (NSDictionary *)responseObject;
NSNumber *code = [resDic objectForKey:@"result"];
NSString *msg = [resDic objectForKey:@"message"];
    if ([code integerValue] == Success) {
        NSArray *order = [self orderArray:resDic];
            if (self.delegate && [self.delegate respondsToSelector:@selector(queryOrderSucess:orders:)]) {
                [self.delegate queryOrderSucess:self orders:order];
            }
    } else if ([code integerValue] == 300) {
            if (self.delegate && [self.delegate respondsToSelector:@selector(queryOrderFailed:error:)]) {
                [self.delegate queryOrderFailed:self error:msg];
            }
    }else {
            if (self.delegate && [self.delegate respondsToSelector:@selector(queryOrderFailed:error:)]) {
                [self.delegate queryOrderFailed:self error:RequestError];
            }
    }
} failure:^(AFHTTPRequestOperation *operation, NSError *error) {
        if (self.delegate && [self.delegate respondsToSelector:@selector(queryOrderFailed:error:)]) {
            [self.delegate queryOrderFailed:self error:RequestError];
        }
}];

MD5簽名相關代碼

+ (NSString *)md5:(NSDictionary *)paraDic {
// NOTE: 排序,得出最終請求字串
    NSArray* sortedKeyArray = [[paraDic allKeys] sortedArrayUsingComparator:^NSComparisonResult(id  _Nonnull obj1, id  _Nonnull obj2) {
        return [obj1 compare:obj2];
    }];
    NSMutableArray *tmpArray = [NSMutableArray new];
    for (NSString* key in sortedKeyArray) {
        NSString* value = [paraDic objectForKey:key];
        if ([value isKindOfClass:[NSNumber class]]) {
            value = [(NSNumber *)value stringValue];
        }
        if (value.length > 0) {
            NSString *keyValueStr = [NSString stringWithFormat:@"%@=%@",key,value];
            [tmpArray addObject:keyValueStr];
        }
    }
    NSString *parameterStr = [tmpArray componentsJoinedByString:@"&"];
    NSString *res = [NSString stringWithFormat:@"%@&key=%@",parameterStr,Key];
    return [[BCBaseObject MD5Hash:res] uppercaseString];
}

開發相關文檔及資源
SDK下載
支付帳戶
協議規則
安全規範_簽名方式

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