1.支付流程
商户系统和微信支付系统主要交互说明:
步骤1:用户在商户APP中选择商品,提交订单,选择微信支付。
步骤2:商户后台收到用户支付单,调用微信支付统一下单接口。
步骤3:统一下单接口返回正常的prepay_id,再按签名规范重新生成签名后,将数据传输给APP。参与签名的字段名为appId,partnerId,prepayId,nonceStr,timeStamp,package。注意:package的值格式为Sign=WXPay
步骤4:商户APP调起微信支付。
步骤5:商户后台接收支付通知。
步骤6:商户后台查询支付结果。
2. 将微信支付的SDK塞进工程
3.配置info.plist
a.schemes
b.白名单
c.安全配置支持Http
4.配置路径
Library search Paths : $(PROJECT_DIR)/XWMerchant/ThirdParts/Wechat/SDKExport
5. 配置payRequsestHandler.h文件
#define APPP_ID @"" //APPID
#define APP_SECRET @"" //appsecret
//商户号,填写商户对应参数
#define MCH_ID @""
//商户API密钥,填写相应参数为了MD5加密
#define PARTNER_ID @""
//支付结果回调页面
#define NOTIFY_URL @"http://wxpay.weixin.qq.com/pub_v2/pay/notify.v2.php"
//获取服务器端支付数据地址(商户自定义)
#define SP_URL @"http://wxpay.weixin.qq.com/pub_v2/app/app_pay.php"
6.支付
a.在
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions 方法中注册一下先:
if ([WXApi registerApp:APPP_ID withDescription:@"weixin"]){
DLog(@"注册成功");
}else{
DLog(@"注册失败");
}
b.在
- (BOOL)application:(UIApplication *)application openURL:(NSURL *)url sourceApplication:(NSString *)sourceApplication annotation:(id)annotation代理中
if ([url.host isEqualToString:@"pay"]) {
[WXApi handleOpenURL:url delegate:self];
}支持回调
c.在需要支付的页面调用如下方法,记得包含头文件
#pragma mark ==============微信支付==============
- (void) wechatPay:(NSDictionary *)dic{//目前只需要prepay_id
NSLog(@"开始微信支付");
//首先判断是否安装wechat
if([WXApi isWXAppInstalled]){
//生成订单
NSLog(@"l-----:%@ ",dic);
NSString *prePayid = dic[@"prepay_id"];
// //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: APPP_ID forKey:@"appid"];
[signParams setObject: nonce_str forKey:@"noncestr"];
[signParams setObject: package forKey:@"package"];
[signParams setObject: MCH_ID forKey:@"partnerid"];
[signParams setObject: time_stamp forKey:@"timestamp"];
[signParams setObject: prePayid forKey:@"prepayid"];
//[signParams setObject: @"MD5" forKey:@"signType"];
//生成签名
NSString *sign = [self createMd5Sign:signParams];//获取微信预付款id
if ( prePayid != nil && sign != nil) {//调起微信支付
PayReq* req = [[PayReq alloc] init];
req.openID = APPP_ID;//
req.partnerId = MCH_ID;//商户号
req.prepayId = prePayid;//预付订单号,后台返回的
req.nonceStr = nonce_str;//随机串 req.timeStamp = time_stamp.intValue;//时间戳 req.package = @"Sign=WXPay";//此地方一定要写成这种格式,后台生成预付订单时也是如此,不要写成prepay_id = @"wx...."
req.sign = sign; BOOL sendRes = [WXApi sendReq:req];
if (sendRes) {
NSLog(@"唤起成功");
}else {
NSLog(@"唤起失败");
}
//日志输出
DLog(@"appid=%@\npartid=%@\nprepayid=%@\nnoncestr=%@\ntimestamp=%ld\npackage=%@\nsign=%@",req.openID,req.partnerId,req.prepayId,req.nonceStr,(long)req.timeStamp,req.package,req.sign );
}else{
DLog(@"预付订单生成失败");
[XWPrompt showPromptMessage:@"订单失败"];
}
}else{
[SMAlertView showAlertWithTitle:@"您还没有安装微信" message:@"是否安装?" cancelTitle:@"否" cancelTitleColor:colorForDeepGrayNormal otherTitle:@"是" otherTitleColor:colorForNavBgColor completion:^(BOOL cancelled) {
if (!cancelled) {
DLog(@"%d",cancelled);
[[ UIApplication sharedApplication] openURL:[NSURL URLWithString:[WXApi getWXAppInstallUrl]]];
}
}];
}
}
//创建package签名
-(NSString*) createMd5Sign:(NSMutableDictionary*)dict
{
NSMutableString *contentString =[NSMutableString string];
NSArray *keys = [dict allKeys];
//按字母顺序排序
NSArray *sortedArray = [keys sortedArrayUsingComparator:^NSComparisonResult(id obj1, id obj2) {
return [obj1 compare:obj2 options:NSNumericSearch];
}];
//拼接字符串
for (NSString *categoryId in sortedArray) {
if ( ![[dict objectForKey:categoryId] isEqualToString:@""]
&& ![categoryId isEqualToString:@"sign"]
&& ![categoryId isEqualToString:@"key"]
)
{
[contentString appendFormat:@"%@=%@&", categoryId, [dict objectForKey:categoryId]];
}
}
//添加key字段
[contentString appendFormat:@"key=%@", PARTNER_ID];
//得到MD5 sign签名
NSString *md5Sign =[WXUtil md5:contentString];
return md5Sign;
}
基本上就能支付成功了,如不成功,请仔细检查一下plist文件的配置白名单,安全,sechems,路径,密钥PARTNER_ID,一定要二次签名,要不支付不成功,特别是唤起支付时[WXApi sendReq:req];总是不成功,而且后台生成预付订单时一定要package = @"Sign=WXPay" ,另一个最他妈坑的就是一定不要用shareSDK,它里面的微信分享的包和微信支付的包冲突,会唤起失败,我就是把shareSDK删除了就能唤起支付页面。微信分享用官网自带的吧,不要用第三分的集成了,太他妈的坑了,坑了半天的时间。就此支付成功了。。。。