证书尚未生效 (FLUTTER)

问题描述

我正在尝试从我的 Flutter 应用程序发送电子邮件，但收到错误“证书尚未生效”。你能帮我理解问题出在哪里以及如何解决吗？我在 Google 帐户中启用了安全性较低的应用。

Future _mail() async {
    String username = 'username @gmail.com';
    String password = 'password';

    final smtpServer = gmail(username,password);
    final message = Message()
      ..from = Address(username)
      ..recipients.add('[email protected]')
      ..subject = 'Mail using mailer package :: ? :: ${DateTime.Now()}'
      ..text = 'This is the plain text.\nThis is line 2 of the text part.'
      ..html = "<h1>Write the content here</h1>\n<p>hey! its easy use html tags for alignments</p>";
    try {
      final sendReport = await send(message,smtpServer);
      print('Message sent: ' + sendReport.toString());

    } on MailerException catch (e) {
      print('Message not sent.');
      for (var p in e.problems) {
        print('Problem: ${p.code}: ${p.msg}');
      }
    }
  }

错误：

E/Flutter (29811): [ERROR:Flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: HandshakeException: Handshake error in client (OS Error: 
E/Flutter (29811):  CERTIFICATE_VERIFY_Failed: certificate is not yet valid(handshake.cc:354))

解决方法

暂无找到可以解决该程序问题的有效方法，小编努力寻找整理中！

如果你已经找到好的解决方法，欢迎将解决方案带上本链接一起发送给小编。

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