我正在尝试使用Flutter开发移动应用程序,我使用swagger生成了包含所有Web服务的Dart文件代码生成。我想从Web服务中获取所有用户的列表。在屏幕上,我想为每个用户显示:图像,名字,姓氏和电子邮件。我已经在main.dart中准备了如下的UI:
import 'package:flutter/material.dart';
import './utility.dart';
void main() => runApp(ListUserApp());
class ListUserApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'User List 4Motors',
home: ListUserScreen(),
);
}
}
class ListUserScreen extends StatefulWidget {
@override
State<StatefulWidget> createState() {
return ListUserScreenState();
}
}
class ListUserScreenState extends State<ListUserScreen> {
@override
Widget build(BuildContext context) {
return MaterialApp(
theme: ThemeData(
primarySwatch: Colors.indigo,
),
home: Scaffold(
appBar: AppBar(
title: Text('User List 4Motors'),
),
body: _buildListUser(),
),
);
}
Widget _buildListUser() {
Utility test = new Utility();
print(test.getFirstNameUser());
return ListView.builder(
itemBuilder: (context, position) {
return Card(
child: Padding(
padding: const EdgeInsets.all(16.0),
child: Container(
margin: const EdgeInsets.all(10.0),
child: Row(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Container(
margin: const EdgeInsets.only(right: 15.0),
child: Image(
width: 65, image: AssetImage('assets/person.jpeg')), // Image of user
),
Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: <Widget>[
Text(
'firstname & lastname', // first and last name of user
style: TextStyle(
fontSize: 22,
),
),
Container(
margin: const EdgeInsets.all(5.0),
child: Text('email'), // Email of user
),
],
),
],
),
),
),
);
});
}
}
并且,下面由swagger生成的用户模型:
part of swagger.api;
class UsersData {
String id = null;
String firstName = null;
String lastName = null;
String email = null;
String phone = null;
String image = null;
DateTime birthDay = null;
String fireBaseID = null;
String dealerID = null;
String type = null;
String provider = null;
DateTime registrationDate = null;
DateTime lastLogin = null;
bool allowComment = null;
bool isActive = null;
List<UserAddressData> addresses = [];
UsersData();
@override
String toString() {
return 'UsersData[id=$id, firstName=$firstName, lastName=$lastName, email=$email, phone=$phone, image=$image, birthDay=$birthDay, fireBaseID=$fireBaseID, dealerID=$dealerID, type=$type, provider=$provider, registrationDate=$registrationDate, lastLogin=$lastLogin, allowComment=$allowComment, isActive=$isActive, addresses=$addresses, ]';
}
UsersData.fromJson(Map<String, dynamic> json) {
if (json == null) return;
id = json['id'];
firstName = json['firstName'];
lastName = json['lastName'];
email = json['email'];
phone = json['phone'];
image = json['image'];
birthDay =
json['birthDay'] == null ? null : DateTime.parse(json['birthDay']);
fireBaseID = json['fireBaseID'];
dealerID = json['dealerID'];
type = json['type'];
provider = json['provider'];
registrationDate = json['registrationDate'] == null
? null
: DateTime.parse(json['registrationDate']);
lastLogin =
json['lastLogin'] == null ? null : DateTime.parse(json['lastLogin']);
allowComment = json['allowComment'];
isActive = json['isActive'];
addresses = UserAddressData.listFromJson(json['addresses']);
}
Map<String, dynamic> toJson() {
return {
'id': id,
'firstName': firstName,
'lastName': lastName,
'email': email,
'phone': phone,
'image': image,
'birthDay': birthDay == null ? '' : birthDay.toUtc().toIso8601String(),
'fireBaseID': fireBaseID,
'dealerID': dealerID,
'type': type,
'provider': provider,
'registrationDate': registrationDate == null
? ''
: registrationDate.toUtc().toIso8601String(),
'lastLogin': lastLogin == null ? '' : lastLogin.toUtc().toIso8601String(),
'allowComment': allowComment,
'isActive': isActive,
'addresses': addresses
};
}
static List<UsersData> listFromJson(List<dynamic> json) {
return json == null
? new List<UsersData>()
: json.map((value) => new UsersData.fromJson(value)).toList();
}
static Map<String, UsersData> mapFromJson(
Map<String, Map<String, dynamic>> json) {
var map = new Map<String, UsersData>();
if (json != null && json.length > 0) {
json.forEach((String key, Map<String, dynamic> value) =>
map[key] = new UsersData.fromJson(value));
}
return map;
}
}
我创建了一个“ Utility.dart”类,该类中放置了一种获取内部所有用户的名字的列表的方法,如下所示:
import 'package:flutter_app_ws/dart-client-generated/lib/api.dart';
class Utility {
UsersData user;
Utility();
List<String> getFirstNameUser() {
List<String> firstName = new List<String>();
firstName.add(user.firstName);
return firstName;
}
}
运行我的应用程序时,出现很多错误,如下所示:
编译器消息: 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:6:8: 错误:找不到:'dart:html' 导入'dart:html'; ^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:95:25: 错误:找不到类型“ HttpRequest”。 void _openHttpRequest(HttpRequest请求,String方法,String url, ^^^^^^^^^^^^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:30:25: 错误:“ HttpRequest”不是类型。 final _xhrs = new Set(); ^^^^^^^^^^^^ lib / main.dart:63:27:错误:期望使用标识符,但得到了','。 ,//用户的名字和姓氏 ^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:44:19: 错误:找不到方法:“ HttpRequest”。 var xhr = new HttpRequest(); ^^^^^^^^^^^^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:55:45: 错误:找不到方法:“斑点”。 var blob = xhr.response == null? new Blob([]):xhr.response; ^^^^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:56:24: 错误:找不到方法:“ FileReader”。 var reader = new FileReader(); ^^^^^^^^^^^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:55:49: 错误:位置参数过多:允许0,但找到1。 尝试删除多余的位置参数。 var blob = xhr.response == null? new Blob([]):xhr.response; ^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:95:25: 错误:“ HttpRequest”不是类型。 void _openHttpRequest(HttpRequest请求,String方法,String url, ^^^^^^^^^^^^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:97:13: 错误:未为类“无效类型”定义方法“打开”。 尝试将名称更正为现有方法的名称,或定义一个名为“ open”的方法。 request.open(方法,URL,异步:异步,用户:用户,密码:密码); ^^^^ 文件:///home/innovi/development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.0+1/lib/src/browser_client.dart:105:11: 错误:未为类“无效类型”定义方法“中止”。 尝试将名称更正为现有方法的名称,或定义一个名为“ abort”的方法。 xhr.abort();
我想知道问题出在哪里,如何使用我的Web服务来获取和显示:图像,所有用户的名字/姓氏和电子邮件。
答案 0 :(得分:0)
我能够为版本 swagger-codgen 的 2.4.2 版的测试颤动项目生成swagger客户端,该版本应该已经解决了issue。 / p>
重要标志: 并按照 要在本地驱动器中使用该软件包,请在> pubspec.yaml 待办事项 请按照安装过程操作,然后运行以下命令: 我只需要在swagger库的 更新 和跟随机翼 我尝试了,两种解决方案都起作用。与挥舞的客户端相比,开放API似乎更能应付自如,因为我不需要在生成的开放api库的java -jar swagger-codegen-cli-2.4.2.jar generate -l dart -i openapi.json -o swagger -DbrowserClient=false
-DbrowserClient=false
README.md
的说明将生成的swagger库添加到我的测试flutter项目中:
本地
dependencies:
swagger:
path: /path/to/swagger
测试
入门
import 'package:swagger/api.dart';
// TODO Configure API key authorization: api_key
//swagger.api.Configuration.apiKey{'key'} = 'YOUR_API_KEY';
// uncomment below to setup prefix (e.g. Bearer) for API key, if needed
//swagger.api.Configuration.apiKeyPrefix{'key'} = "Bearer";
var api_instance = new DefaultApi();
pubspec.yaml
中也明确指定环境。name: swagger
version: 1.0.0
description: Swagger API client
environment:
sdk: ">=2.1.0 <3.0.0"
dependencies:
http: '>=0.11.1 <0.12.0'
java -jar openapi-generator-cli-3.3.4.jar generate -l dart -i openapi.json -o openapi -DbrowserClient=false
README.md
,就像用招摇一样。pubspec.yaml
中添加环境,但是它是自动设置的。