FormatException:使用email_auth包时出现意外字符(位于字符1)错误

Question

#你好！我正在使用email_auth:^0.0.1+4包来确认用户电子邮件，它也运行了几天，我还注册了23个用户，但突然它开始显示此格式异常：意外字符(在字符1处(和DOCTYPE html错误。我已经添加了注册文件，请检查并提供帮助。谢谢。#

注册页面

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:vanfly/common.dart';
import 'package:vanfly/providers/user_provider.dart';
import 'package:vanfly/screens/home.dart';
import 'package:vanfly/widgets/loading.dart';
import 'package:email_auth/email_auth.dart';
bool verified = false;
class SignUp extends StatefulWidget {
@override
_SignUpState createState() => _SignUpState();
}
class _SignUpState extends State<SignUp> {
final _formKey = GlobalKey<FormState>();
final _key = GlobalKey<ScaffoldState>();
TextEditingController _email = TextEditingController();
TextEditingController _password = TextEditingController();
TextEditingController _name = TextEditingController();
TextEditingController otp = TextEditingController();
bool hidePass = true;
void sendOTP() async {
EmailAuth.sessionName = 'Vanfly';
var res = await EmailAuth.sendOtp(receiverMail: _email.value.text);
if (res) {
_key.currentState.showSnackBar(SnackBar(
content: Text("An OTP has sent to your email please verify")));
} else {
_key.currentState
.showSnackBar(SnackBar(content: Text('Something went wrong')));
}
}
bool verifyOTP(){
var res =  EmailAuth.validate(receiverMail: _email.value.text, userOTP: otp.value.text);
if (res) {
return verified = true;
} else {
_key.currentState
.showSnackBar(SnackBar(content: Text('Something went wrong')));
return verified = false;
}
}
@override
Widget build(BuildContext context) {
final user = Provider.of<UserProvider>(context);
return Scaffold(
key: _key,
body: user.status == Status.Authenticating
? Loading()
: Stack(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(0),
child: Container(
decoration: BoxDecoration(
color: Colors.white,
borderRadius: BorderRadius.circular(16),
boxShadow: [
BoxShadow(
color: Colors.grey[350],
blurRadius:
20.0, // has the effect of softening the shadow
)
],
),
child: Form(
key: _formKey,
child: ListView(
children: <Widget>[
Padding(
padding: const EdgeInsets.all(16.0),
child: Container(
alignment: Alignment.topCenter,
child: Image(
image: AssetImage(
'images/vanfly Logo/vanfly_logo.png'),
width: 300,
height: 300,
)),
),
Padding(
padding: const EdgeInsets.fromLTRB(
14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(10.0),
color: Colors.grey.withOpacity(0.3),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title: TextFormField(
controller: _name,
decoration: InputDecoration(
hintText: "Full name",
icon: Icon(Icons.person_outline),
border: InputBorder.none),
validator: (value) {
if (value.isEmpty) {
return "The name field cannot be empty";
}
return null;
},
),
),
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(
14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(10.0),
color: Colors.grey.withOpacity(0.2),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title: TextFormField(
keyboardType: TextInputType.emailAddress,
controller: _email,
decoration: InputDecoration(
hintText: "Email",
suffixIcon: TextButton(
onPressed: () {
sendOTP();
},
child: Text('Verify')),
icon: Icon(Icons.alternate_email),
border: InputBorder.none),
),
),
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(
14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(10.0),
color: Colors.grey.withOpacity(0.2),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title: TextFormField(keyboardType: TextInputType.number,
controller: otp,
decoration: InputDecoration(
hintText: "otp",
suffixIcon: TextButton(
onPressed: () {
sendOTP();
},
child: Text('Resend'),
),
icon: Icon(Icons.pin),
border: InputBorder.none),
),
),
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(
14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(10.0),
color: Colors.grey.withOpacity(0.3),
elevation: 0.0,
child: Padding(
padding: const EdgeInsets.only(left: 12.0),
child: ListTile(
title: TextFormField(
controller: _password,
obscureText: hidePass,
decoration: InputDecoration(
hintText: "Password",
icon: Icon(Icons.lock_outline),
border: InputBorder.none),
validator: (value) {
if (value.isEmpty) {
return "The password field cannot be empty";
} else if (value.length < 6) {
return "the password has to be at least 6 characters long";
}
return null;
},
),
trailing: IconButton(
icon: Icon(Icons.remove_red_eye),
onPressed: () {
setState(() {
hidePass = !hidePass;
});
}),
),
),
),
),
Padding(
padding: const EdgeInsets.fromLTRB(
14.0, 8.0, 14.0, 8.0),
child: Material(
borderRadius: BorderRadius.circular(20.0),
color: Colors.pinkAccent,
elevation: 0.0,
child: MaterialButton(
onPressed: () async {
verifyOTP();
if (verified == true &&
_formKey.currentState.validate()) {
if (!await user.signUp(_name.text,
_email.text, _password.text)) {
// ignore: deprecated_member_use
_key.currentState.showSnackBar(
SnackBar(
content:
Text("Sign up failed")));
return;
}
changeScreenReplacement(
context, MyHomePage());
}
},
minWidth: MediaQuery.of(context).size.width,
child: Text(
"Sign up",
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 20.0),
),
)),
),
Padding(
padding: const EdgeInsets.all(8.0),
child: InkWell(
onTap: () {
Navigator.pop(context);
},
child: Text(
"I already have an account",
textAlign: TextAlign.center,
style: TextStyle(
color: Colors.black, fontSize: 16),
))),
],
)),
),
),
],
),
);
}
}

错误

I/flutter ( 5091): Email ID is valid
I/flutter ( 5091): --This error is from the package--
I/flutter ( 5091): FormatException: Unexpected character (at character 1)
I/flutter ( 5091): <!DOCTYPE html>
I/flutter ( 5091): ^
I/flutter ( 5091): --End package error message--

Answer 1

错误来自程序包本身。

包调用以发送OTP的端点已关闭，因此它返回一个错误页面，而不是包所需的JSON。这导致解析HTML时出错，这就是为什么错误显示：

FormatException: Unexpected character (at character 1)
<!DOCTYPE html>
^

我建议您为此使用不同的服务，如firebase_auth，或者在项目中创建问题。