iOS--->微信支付小结

说起支付，除了支付宝支付之外，微信支付也是我们三方支付中最重要的方式之一，承接上面总结的支付宝，接下来把微信支付也总结了一下

***那么首先还是由公司去创建并申请使用微信支付所需的信息

1.接下来就是微信支付的集成步骤了，参考着开发文档来，非常简单的下载SDK，项目中导入所需的文件WxPay文件夹中，注意其中的.a文件容易丢失

2.根据文档对其中支持的非arc进行设置

3.设置微信支付的URL types

4.接下来就是代码内部的事情了，做支付我们知道首先需要在appdelegate中设置相应的属性

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

self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
//微信支付配置  自己申请注册的
[WXApi registerApp:@"wx0e65e1b96577f407" withDescription:@"demo 2.0"];
return YES;

}

//微信支付界面 onResp函数回调界面

//处理微信通过URL，启动App时传递的数据

-(BOOL)application:(UIApplication *)application handleOpenURL:(NSURL *)url{

return  [WXApi handleOpenURL:url delegate:self];

}

说到支付，那么支付结果的回调是必不可少的，还是在appdelegate页面

//微信支付返回回调

-(void)onResp:(BaseResp*)resp{

NSLog(@"tets");
NSInteger num=0;
if ([resp isKindOfClass:[PayResp class]]){
    PayResp*response=(PayResp*)resp;
    switch(response.errCode){
        case WXSuccess:
        {
            num=1;
            //服务器端查询支付通知或查询API返回的结果再提示成功
            NSLog(@"支付成功");
            //                [self weixinzhifuhuidiao:1];
            break;
        }
        case WXErrCodeUserCancel:
        {
            num=2;
            NSLog(@"cewsgu");
            //                [self weixinzhifuhuidiao:2];
        }
            break;
        default:
            num=3;
            //                [self weixinzhifuhuidiao:3];
            NSLog(@"支付失败，retcode=%d",resp.errCode);
            break;
    }
}

}

最后就不说闲话了，直接在支付页面上代码参考官方Demo即可(貌似官方有两种方式，这里仅使用其中一种)

#pragma mark --------- 微信支付 demo ---------

-(void)setWeixinSuccessString:(NSString *)weixinSuccessString{

_weixinSuccessString=weixinSuccessString;
[SVProgressHUD showWithStatus:@"正在提交预支付信息"];
GRWDDDRequest * request=[[GRWDDDRequest alloc]init];
[request weixinyuzhifuWithString:weixinyuazhifURL parems:@{@"Income":@(_totalprice),@"OrderNo":_dataDict[@"orderNo"]} success:^(id data) {
    NSDictionary * dict=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
    if ([dict[@"Result"] floatValue] == 1) {
        NSString * message = [NSString stringWithFormat:@"订单号:%@\r总支付价格:%0.2f元",_dataDict[@"orderNo"],_totalprice];
        UIAlertView * alertView=[[UIAlertView alloc]initWithTitle:@"微信支付信息" message:message delegate:self cancelButtonTitle:@"确定" otherButtonTitles:@"取消", nil];
        alertView.delegate=self;
        alertView.tag=2015;
        [alertView show];
        _weixinDict=dict[@"Data"];
    }else{
        UIAlertView * alertView=[[UIAlertView alloc]initWithTitle:@"支付失败" message:dict[@"Data"] delegate:self cancelButtonTitle:@"确定" otherButtonTitles:nil, nil];
        [alertView show];
    }
    [SVProgressHUD dismiss];
} fail:^(NSError *error) {
    [SVProgressHUD dismiss];
}];

}

// 请求回调微信支付

-(void)sendzhifu{

_dict =[NSDictionary dictionary];
_dict = [self qianming:_weixinDict];
PayReq *request = [[PayReq alloc] init];
request.partnerId = _dict[@"partnerid"];
request.prepayId= _dict[@"prepayid"];
request.package = _dict[@"package"];
request.nonceStr= _dict[@"noncestr"];
request.timeStamp= (UInt32)[_dict[@"timestamp"] integerValue];
request.sign= _dict[@"sign"];
[WXApi sendReq:request];

}

-(NSDictionary *)qianming:(NSDictionary *)ttdict{

payRequsestHandler * handler =  [[payRequsestHandler alloc]init];
[handler init:@"wx0e65e1b96577f407" mch_id:@"1265805801"];
[handler setKey:@"CLSH1984AWST1982weixinapihd2015t"];
NSString *prePayid;
prePayid = ttdict[@"prepayid"];
if ( prePayid != nil) {
    //获取到prepayid后进行第二次签名
    NSString    *package, *time_stamp, *nonce_str;
    //设置支付参数
    time_t now;
    time(&now);
    time_stamp  = [NSString stringWithFormat:@"%ld", now];
    nonce_str	= [WXUtil md5:time_stamp];
    //重新按提交格式组包，微信客户端暂只支持package=Sign=WXPay格式，须考虑升级后支持携带package具体参数的情况
    //package       = [NSString stringWithFormat:@"Sign=%@",package];
    package         = @"Sign=WXPay";
    //第二次签名参数列表
    NSMutableDictionary *signParams = [NSMutableDictionary dictionary];
    [signParams setObject: ttdict[@"appId"]        forKey:@"appid"];
    [signParams setObject: nonce_str    forKey:@"noncestr"];
    [signParams setObject: package      forKey:@"package"];
    [signParams setObject: ttdict[@"partnerid"]        forKey:@"partnerid"];
    [signParams setObject: time_stamp   forKey:@"timestamp"];
    [signParams setObject: ttdict[@"prepayid"]     forKey:@"prepayid"];
    //[signParams setObject: @"MD5"       forKey:@"signType"];
    //生成签名
    NSString *sign  = [handler createMd5Sign:signParams];
    //添加签名
    [signParams setObject: sign         forKey:@"sign"];
    NSLog(@"*****%@ ******",sign);
    //返回参数列表
    return signParams;
}
else{
    return nil;
}
return nil;

}

//微信支付返回回调

-(void)onResp:(BaseResp*)resp{

NSLog(@"判断是否执行此路径 **** %@  **** %@",_orderNoLabel.text,_dataDict[@"orderNo"]);
self.ceshixiancheng=@"";
if ([resp isKindOfClass:[PayResp class]]){
    PayResp*response=(PayResp*)resp;
    switch(response.errCode){
        case WXSuccess:
        {
            //服务器端查询支付通知或查询API返回的结果再提示成功
            NSLog(@"支付成功");
            break;
        }
            case WXErrCodeUserCancel:
        {
        }
            break;
        default:
            NSLog(@"支付失败，retcode=%d",resp.errCode);
            break;
    }
}

}

//微信支付结果二次确认

-(void)weixinzhifuhuidiao:(NSInteger)state{

NSUserDefaults * userDefaults=[NSUserDefaults standardUserDefaults];
NSDictionary * userDict=[userDefaults valueForKey:@"login"];
[SVProgressHUD showWithStatus:@"正在核对支付信息，请稍等……"];
GRWDDDRequest * request=[[GRWDDDRequest alloc]init];
[request weixinzhifujieguoWithString:weixinzhifujieguoURL parems:@{@"orderno":_dataDict[@"orderNo"],@"payno":_weixinDict[@"payNo"],@"state":@(state),@"menberId":userDict[@"Data"][@"Id"]} success:^(id data) {
    NSDictionary * dict=[NSJSONSerialization JSONObjectWithData:data options:0 error:nil];
    if ([dict[@"Result"] integerValue] == 1) {
        [SVProgressHUD showSuccessWithStatus:dict[@"Data"]];
        [self.navigationController popViewControllerAnimated:YES];
    }else{
        [SVProgressHUD showErrorWithStatus:dict[@"Data"]];
    }
    NSLog(@"%@",dict);
} fail:^(NSError *error) {
    [SVProgressHUD dismiss];
}];

}

到这里微信支付也就结束了，其他的就是解决问题了，集成的过程中出现错误不可避免，解决即可

1>启动后，出现闪退现象:检查签名是否正确(需要二次签名)，在URL Schemes中检查是否正确添加了微信appid，检查你是否注册了appid

***最普遍的错误就是:sign字段，必须要自己生成的

ps:我刚开始时出现了很多错误，然而查也没找到答案，总后用了神技:删除重新集成一遍，然后就这样默默地成功了。。。其实我也不知道为什么，有时候实在没办法，那就重新加一遍，说不定可以解决呢！！！！