IOS关于支付宝web支付不同实现

由于支付宝web支付返回的是一个带请求链接的表单&＃xff0c;所以直接加载html形式&＃xff0c;不要使用loadrequest

[self.webView loadHTMLString:self.requestUrlStrs baseURL:nil];

使用WKwebView方式遵守WKNavigationDelegate协议&＃xff0c;建议使用WKwebView因为UIWebView会导致内存泄漏

-(void)webView:(WKWebView *)webView decidePolicyForNavigationAction:(WKNavigationAction *)navigationAction decisionHandler:(void (^)(WKNavigationActionPolicy))decisionHandler{NSString *url &＃61; [navigationAction.request.URL.absoluteString stringByRemovingPercentEncoding];NSString* reUrl&＃61;[[webView URL] absoluteString];reUrl &＃61; url;if ([url containsString:&＃64;"alipay://"]) {NSInteger subIndex &＃61; 23;NSString* dataStr&＃61;[url substringFromIndex:subIndex];//编码NSString *encodeString &＃61; [self encodeString:dataStr];NSMutableString* mString&＃61;[[NSMutableString alloc] init];[mString appendString:[url substringToIndex:subIndex]];[mString appendString:encodeString];[[UIApplication sharedApplication] openURL:[NSURL URLWithString:mString]];}decisionHandler(WKNavigationActionPolicyAllow);return;
}
-(NSString*)encodeString:(NSString*)unencodedString{// CharactersToBeEscaped &＃61; &＃64;":/?&&＃61;;&＃43;!&＃64;#$()~&＃39;,*";// CharactersToLeaveUnescaped &＃61; &＃64;"[].";NSString *encodedString &＃61; (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)unencodedString,NULL,(CFStringRef)&＃64;"!*&＃39;();:&＃64;&&＃61;&＃43;$,/?%#[]",kCFStringEncodingUTF8));return encodedString;}

使用webview方式&＃xff0c;遵守webviewdelegate 协议&＃xff0c;建议使用WKwebView因为UIWebView会导致内存泄漏

-(BOOL)webView:(UIWebView *)webView shouldStartLoadWithRequest:(NSURLRequest *)request navigationType:(UIWebViewNavigationType)navigationType{// NOTE: ------ 对alipays:相关的scheme处理 -------// NOTE: 若遇到支付宝相关scheme&＃xff0c;则跳转到本地支付宝AppNSString* reqUrl &＃61; request.URL.absoluteString;if ([reqUrl hasPrefix:&＃64;"alipays://"] || [reqUrl hasPrefix:&＃64;"alipay://"]) {// NOTE: 跳转支付宝App&＃xff0c;bSucc判断是否成功BOOL bSucc &＃61; [[UIApplication sharedApplication]openURL:request.URL];}return YES;
}

IOS 关于web支付无法返回APP解决方案