iOS实现H5支付(微信、支付宝)原生封装

 @interface HJH5WebPayManager() @property (nonatomic,strong) UIWebView *payWebview; @property (nonatomic,strong) void(^sendPayResult)(HJH5SendWebPayResult); @end @implementation HJH5WebPayManager +(instancetype)sharedInstance{ static dispatch_once_t once ; static HJH5WebPayManager *_instace = nil; dispatch_once(&once, ^{ _instace = [[self alloc] init]; }); return _instace; } -(void)loadWebPayTransitionPage:(NSString *)html handleBlock:(void (^)(HJH5SendWebPayResult))handle{ NSMutableURLRequest *request = nil; if ([html hasPrefix:@"https://wx.tenpay.com"]) { //微信安全域名 NSString *wxScheme = @""; NSString *referer = [NSString stringWithFormat:@"%@://",wxScheme]; //将redirect_url替换成scheme,微信支付完毕才能跳回APP，否则会打开Safari浏览器(因为redirect_url一般为一个HTTP的地址) NSRange range = [html rangeOfString:@"redirect_url="]; NSString *reqUrl; if (range.length>0) { reqUrl = [html substringToIndex:range.location+range.length]; reqUrl = [reqUrl stringByAppendingString:referer]; }else{ reqUrl = [html stringByAppendingString:[NSString stringWithFormat:@"&redirect_url=%@",referer]]; } request = [NSMutableURLRequest requestWithURL:[NSURL URLWithString:reqUrl] cachePolicy:NSURLRequestUseProtocolCachePolicy timeoutInterval:60.0]; //设置授权域名，伪造Referer头，因为微信中间页会检验Referer头，并且Referer对应的值需要包含安全域名 [request setValue:referer forHTTPHeaderField:@"Referer"]; if (self.payWebview) { [self.payWebview removeFromSuperview]; self.payWebview = nil; } self.payWebview = [[UIWebView alloc] initWithFrame:CGRectMake(0, 0, 0.1, 0.1)]; self.sendPayResult = handle; [[UIApplication sharedApplication].keyWindow addSubview:self.payWebview]; self.payWebview.delegate = self; [self.payWebview loadRequest:request]; }else if ([html hasPrefix:@" \n" " \n" " \n" " \n" " \n" "" "%@" "" "",payStr]; [self.payWebview loadHTMLString:htmlString baseURL:nil]; }else{ //非法html,返回错误 handle(HJH5SendWebPayResultOther); return; } //容错处理，20秒没唤起支付，当错误处理。 __weak typeof(self) weakSelf = self; dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(20 * NSEC_PER_SEC)), dispatch_get_main_queue(), ^{ if (weakSelf.sendPayResult) { weakSelf.sendPayResult(HJH5SendWebPayResultOther); } [weakSelf endPayment]; }); } - (void)webView:(UIWebView *)webView didFailLoadWithError:(NSError *)error{ //页面加载失败，返回错误 if (self.sendPayResult) { self.sendPayResult(HJH5SendWebPayResultLoadFail); } [self endPayment]; } - (BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{ NSURL *url = request.URL; NSString *newUrl = url.absoluteString; //拦截微信支付请求，并打开微信 if([newUrl rangeOfString:@"weixin://wap/pay"].location != NSNotFound){ //判断是否能打开微信 if ([[UIApplication sharedApplication] canOpenURL:url]) { if (@available(iOS 10.0, *)){ [[UIApplication sharedApplication] openURL:url options:@{} completionHandler:nil]; }else{ [[UIApplication sharedApplication] openURL:url]; } if (self.sendPayResult) { self.sendPayResult(HJH5SendWebPayResultSuccess); } [self endPayment]; }else{ if (self.sendPayResult) { self.sendPayResult(HJH5SendWebPayResultSendFail); } [self endPayment]; } return NO; }else if([newUrl rangeOfString:@"alipay://alipayclient/?"].location != NSNotFound){ //拦截支付宝支付请求，并且替换fromAppUrlScheme参数为当前APP的scheme,实现支付完毕返回APP功能。 NSString *aliScheme = @"支付宝支付scheme,支付完毕可通过scheme返回到当前APP"; newUrl = [HJStringHelper decodeURL:newUrl]; NSString *parameterString = [newUrl stringByReplacingOccurrencesOfString:@"alipay://alipayclient/?" withString:@""]; NSError *error = nil; id dict = [NSJSONSerialization JSONObjectWithData:[parameterString dataUsingEncoding:NSUTF8StringEncoding] options:NSJSONReadingMutableContainers error:&error]; if (!error) { if ([dict isKindOfClass:[NSMutableDictionary class]]) { dict[@"fromAppUrlScheme"] = aliScheme; NSData *jsonData = [NSJSONSerialization dataWithJSONObject:dict options:NSJSONWritingPrettyPrinted error:&error]; if (!error) { parameterString = [HJStringHelper escapeURL:[[NSString alloc] initWithData:jsonData encoding:NSUTF8StringEncoding]]; NSString *payUrl = [NSString stringWithFormat:@"alipay://alipayclient/?%@",parameterString]; dispatch_async(dispatch_get_main_queue(), ^{ //判断是否能打开支付宝 if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:payUrl]]) { if (@available(iOS 10.0, *)){ [[UIApplication sharedApplication] openURL:[NSURL URLWithString:payUrl] options:@{} completionHandler:nil]; }else{ [[UIApplication sharedApplication] openURL:[NSURL URLWithString:payUrl]]; } if (self.sendPayResult) { self.sendPayResult(HJH5SendWebPayResultSuccess); } [self endPayment]; }else{ if (self.sendPayResult) { self.sendPayResult(HJH5SendWebPayResultSendFail); } [self endPayment]; } }); } } } return NO; }else{ return YES; } } -(void)endPayment{ self.sendPayResult = nil; [self.payWebview removeFromSuperview]; self.payWebview = nil; } @end

 typedef NS_ENUM(NSUInteger,HJH5SendWebPayResult) { HJH5SendWebPayResultSuccess = 0, //唤起登录成功 HJH5SendWebPayResultLoadFail, //支付页面加载失败 HJH5SendWebPayResultSendFail, //调起支付失败，可能是没添加未安装微信或者支付宝 HJH5SendWebPayResultOther //其他 };