Dio问题总结

最新推荐文章于 2025-09-26 16:50:45 发布

原创最新推荐文章于 2025-09-26 16:50:45 发布 · 2.6k 阅读

0 ·

CC 4.0 BY-SA版权

文章标签：

#flutter #dio #flutter代理 #CERTIFICATE #dart代理

Dart 同时被 2 个专栏收录

7 篇文章

订阅专栏

Flutter

3 篇文章

订阅专栏

本文介绍了在Flutter中如何添加HTTP代理，并解决在进行网络请求时遇到的CERTIFICATE_VERIFY_FAILED错误。通过设置`badCertificateCallback`为始终接受，可以跳过自签名证书的验证，确保项目能够正常运行。

1. 添加代理

Dio dio = Dio(_options)
(dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
        (client) {
      client.badCertificateCallback =
          (X509Certificate cert, String host, int port) => true;
      client.findProxy = (uri) {
        if (proxyIP == null || proxyIP.isEmpty) {
          return 'DIRECT';
        }
        return 'PROXY $proxyIP:$proxyPort';
      };
      return client;
    };

2.CERTIFICATE_VERIFY_FAILED问题

项目运行时报了如下错误：

HandshakeException: Handshake error in client (OS Error: CERTIFICATE_VERIFY_FAILED: self signed certificate in certificate chain(handshake.cc:393))

解决方法：

Dio dio = Dio(_options)
(dio.httpClientAdapter as DefaultHttpClientAdapter).onHttpClientCreate =
        (client) {
      client.badCertificateCallback = (cert, host, port) {
        return true;
      };
    };