转载请标明出处。

certificate_verify_failed: unable to get local issuer certificate

其请求代码如下：

HttpClient client = HttpClient();var request = await client.getUrl(Uri.parse("https://wxpay.wxutil.com/pub_v2/app/app_pay.php"));

原因就是证书不被信任。为了解决这个问题需要强行信任：

client.badCertificateCallback = callback(X509Certificate cert, String host, int port){      return true;    }

badCertificateCallback返回值为true就可以解决问题了。

import 'dart:io';import 'package:http/http.dart' as http;bool _certificateCheck(X509Certificate cert, String host, int port) =>    host == 'devblog.paypal.com';http.Client paypalClient() {  var ioClient = new HttpClient()      ..badCertificateCallback = _certificateCheck;    return new http.IOClient(ioClient);}

为其设置一个IOClient就可以解决问题了。