微信支付

流程 :
移动端向后台发送购物请求 -> 后台发送相应信息发给微信 -> 微信生成订单反馈给后台 -> 后台反馈订单信息给移动端 -> 移动端用相应信息调用手机微信客户端 -> 完成支付收到相应反馈再给后台发送完成信息备案存储

移动端工作

1.下载微信支付SDK
https://pay.weixin.qq.com/wiki/doc/api/app/app.php?chapter=11_1

2.在工程General中添加添加相应静态库

B2F44D11-3980-4D24-81C7-7EAD9652AAB7.png

3.在Info中添加 微信开发者ID

4BECEABF-3ADC-4546-A9EC-95F30389D590.png

4.appDelegate中程序已启动注册微信支付

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {

    [WXApi registerApp:@"wxb4ba3c02aa476ea1" withDescription:@"com.kdx.touchfound"];

    return YES;
}```
5.发送用户选择货品给后台,获取后台回馈的订单信息,填充后调用微信客户端

        NSMutableString *retcode = [dict objectForKey:@"retcode"];
        if (retcode.intValue == 0){
            NSMutableString *stamp = [dict objectForKey:@"timestamp"];
            
            //调起微信支付
            PayReq* req = [[PayReq alloc] init];
            req.partnerId = [dict objectForKey:@"partnerid"];
            req.prepayId = [dict objectForKey:@"prepayid"];
            req.nonceStr = [dict objectForKey:@"noncestr"];
            req.timeStamp = stamp.intValue;
            req.package = [dict objectForKey:@"package"];
            req.sign = [dict objectForKey:@"sign"];
            [WXApi sendReq:req];
            //日志输出
            NSLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",[dict objectForKey:@"appid"],req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign );
        }

6.接收支付结果
在AppDelegate中遵守协议  <WXApiDelegate>

//用于接收支付结果

• (void)onResp:(BaseResp *)resp {
  if ([resp isKindOfClass:[PayResp class]]) {
  NSString stringMsg,strTitle = @"支付结果";
  switch (resp.errCode) {
  case WXSuccess:
  stringMsg = @"支付结果 : 成功";
  NSLog(@"支付成功 - retcode = %d",resp.errCode);
  break;

        default:
            stringMsg = @"支付结果 : 失败";
            NSLog(@"支付成功 - retcode = %d",resp.errCode);
            break;
    } 
  

  }
  }
  //用于应用间跳转

• (BOOL)application:(UIApplication *)app openURL:(NSURL *)url options:(NSDictionary<NSString *,id> *)options {
  return [WXApi handleOpenURL:url delegate:self];
  }