集成微信支付（附带demo）

首先忽略掉申请AppKey的步骤，直接从集成开始

1、cocopods集成SDK

pod 'WechatOpenSDK'

2、添加依赖库

SystemConfiguration.framework, libz.tbd, libsqlite3.0.tbd, libc++.tbd, Security.framework, CoreTelephony.framework, CFNetwork.framework.

3、设置URL Schemes为您的APPID

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4、在Info.plist里面添加白名单

LSApplicationQueriesSchemes

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5、在APPdelegate里面注册APPID

/**  微信支付 */
    [WXApi startLogByLevel:WXLogLevelNormal logBlock:^(NSString *log) {
        NSLog(@"log : %@", log);
    }];
    //向微信注册,发起支付必须注册
    [WXApi registerApp:@"wxb4ba3c02aa476ea1" enableMTA:YES];

6、调起支付

+ (void)jumpToBizPay {
    
    //============================================================
    // V3&V4支付流程实现
    // 注意:参数配置请查看服务器端Demo
    // 更新时间：2015年11月20日
    //--->实际项目代码
    NSString *urlString   = @"https://wxpay.wxutil.com/pub_v2/app/app_pay.php?plat=ios";
    NSString *url =[NSString stringWithFormat:@"%@%@", @"Base_URL",urlString];
    //    NSLog(@"微信支付___URL=== %@,%@", url,self.orderId);
    [DCServiceTool postWithUrl:url params:@{@"orderID":@"orderId"} success:^(id  _Nonnull responseObject) {
        
        if ([[responseObject objectForKey:@"code"] intValue] == 0) {
            
            // 调起微信支付
            PayReq *req = [[PayReq alloc] init];
            //            id dic = [responseObject objectForKey:@"data"];
            //            if ([dic isKindOfClass:[NSString class]]) {
            //                NSString *str = [NSString stringWithFormat:@"%@",dic];
            //                if ([str isEqualToString:@"PAY_SUCCESS"]) {
            //                    /**  支付成功  处理   */
            //                    //                            [weakself goToOrderDetailVC];
            //                    DCLog(@"支付成功  处理 ---");
            //                    return ;
            //                }
            //                return ;
            //            }
            /** 微信分配的公众账号ID -> APPID */
            req.openID = [responseObject objectForKey:@"appid"];
            /** 商家向财付通申请的商家id */
            req.partnerId = [responseObject objectForKey:@"partnerid"];
            /** 预支付订单 从服务器获取 */
            req.prepayId = [responseObject objectForKey:@"prepayid"];
            /** 随机串，防重发 */
            req.nonceStr = [responseObject objectForKey:@"noncestr"];
            /** 时间戳，防重发 */
            req.timeStamp = [[responseObject objectForKey:@"timestamp"] intValue];
            /** 商家根据财付通文档填写的数据和签名 <暂填写固定值Sign=WXPay>*/
            req.package = [responseObject objectForKey:@"package_"];
            /** 商家根据微信开放平台文档对数据做的签名, 可从服务器获取，也可本地生成*/
            req.sign = [responseObject objectForKey:@"sign"];
            //日志输出
            DCLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",[responseObject objectForKey:@"appid"],req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign );
            
            if ([WXApi isWXAppInstalled] == YES) {
                BOOL sss =   [WXApi sendReq:req];
                if (!sss ) {
                    [SVProgressHUD showWithStatus:@"微信sdk错误"];
                    [SVProgressHUD dismissWithDelay:1.0];
                }
            } else {
                //微信未安装
                [SVProgressHUD showWithStatus:@"您没有安装微信"];
                [SVProgressHUD dismissWithDelay:1.0];
            }
        }else {
            [SVProgressHUD showWithStatus:responseObject[@"msg"]];
            [SVProgressHUD dismissWithDelay:1.0];
        }
    } failure:^(NSError * _Nonnull error) {
        
    }];
}

7、支付结果回调

#pragma mark - WXApiDelegate
- (void)onResp:(BaseResp *)resp {
    if([resp isKindOfClass:[PayResp class]]){
        //支付返回结果，实际支付结果需要去微信服务器端查询
        NSString *strMsg,*strTitle = [NSString stringWithFormat:@"支付结果"];
        switch (resp.errCode) {
            case WXSuccess:
                strMsg = @"支付结果：成功！";
                NSLog(@"支付成功－PaySuccess，retcode = %d", resp.errCode);
                break;
                
            default:
                strMsg = [NSString stringWithFormat:@"支付结果：失败！retcode = %d, retstr = %@", resp.errCode,resp.errStr];
                NSLog(@"错误，retcode = %d, retstr = %@", resp.errCode,resp.errStr);
                break;
        }
        UIAlertView *alert = [[UIAlertView alloc] initWithTitle:strTitle message:strMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil];
        [alert show];
    }else {
    }
}

- (void)onReq:(BaseReq *)req {

}

8、在appDelegate.m中整理判断回调

- (BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url {
    [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]];
    return YES;
}
/**
 这里处理微信支付完成之后跳转回来
 */
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation {
    /**  微信支付回调 */
    if ([url.host isEqualToString:@"pay"]) {
        return [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]];
    }
    return YES;
}

// NOTE: 9.0以后使用新API接口
- (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary *)options {

    /**  微信的支付回调 */
    if ([url.host isEqualToString:@"pay"]) {
        return [WXApi handleOpenURL:url delegate:[WXApiManager sharedManager]];
    }
    return YES;
}