定义model：文章来源：https://www.toymoban.com/news/detail-506982.html
class User {
final String name;
final String email;
User(this.name, this.email);
User.fromJson(Map<String, dynamic> json)
: name = json['name'],
email = json['email'];
Map<String, dynamic> toJson() =>
<String, dynamic>{
'name': name,
'email': email,
};
}
使用方法：文章来源地址https://www.toymoban.com/news/detail-506982.html
Map userMap = json.decode(json);
var user = User.fromJson(userMap);
print('Howdy, ${user.name}!');
print('We sent the verification link to ${user.email}.');
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