deepseek-v3+flutter3.32实战wins版流式ai对话系统
【摘要】 原创跨平台新作flutter3.32+dart3.8+deepseek-v3+get+dio+window_manager从0-1搭建桌面客户端流式Ai聊天会话系统。集成了 Flutter3 对接 DeepSeek API 对话大模型。支持收缩侧边栏、代码高亮、会话本地存储。
2025客户端Ai应用：flutter3.32+deepseek-v3+dio+get+window_manager搭建windows版流式ai聊天模板。
uni-app+deepseek-v3跨三端ai流式输出对话模板
deepseek-v3+vue3.5网页版webai流式对话模板
使用技术
- 跨平台框架：flutter3.32.0+dart3.8.0
- ai大模型：deepseek-v3
- 流式请求：dio^5.8.0+1
- 窗口管理：window_manager^0.5.0
- 托盘管理：system_tray^2.0.3
- 路由/状态管理：get^4.7.2
- 存储服务：get_storage^2.1.1
- markdown解析：flutter_markdown^0.7.7
- 高亮组件：flutter_highlight^0.7.0
- 环境变量配置：flutter_dotenv^5.2.1
项目结构目录
通过 flutter create flutter_winseek 命令即可快速创建一个flutter空项目模板。
通过 flutter run -d windows 命令即可运行到windows桌面。
flutter3配置.env
# 项目名称
APP_NAME = 'Flutter3-WinSeek'
# DeepSeek API配置
DEEPSEEK_API_KEY = apikey
DEEPSEEK_BASE_URL = https://api.deepseek.com
项目布局模板
项目整体分为可收缩侧边栏+顶部导航栏+ai对话区。
return Scaffold(
backgroundColor: Colors.grey[50],
body: DragToResizeArea(
child: Row(
children: [
// 侧边栏
AnimatedSize(
duration: const Duration(milliseconds: 300),
curve: Curves.easeInOut,
child: Container(
width: collapsed ? 0 : 260,
decoration: BoxDecoration(
border: Border(right: BorderSide(color: Colors.grey.withAlpha(50)))
),
child: Material(
color: Color(0xFFF3F3F3),
child: Sidebar(),
),
),
),
// 主体容器
Expanded(
child: Column(
children: [
// 自定义导航栏
SizedBox(
height: 30.0,
child: Row(
children: [
IconButton(
onPressed: () {
setState(() {
collapsed = !collapsed;
});
},
icon: Icon(collapsed ? Icons.format_indent_increase : Icons.format_indent_decrease, size: 16.0,),
tooltip: collapsed ? '展开' : '收缩',
),
Expanded(
child: DragToMoveArea(
child: SizedBox(
height: double.infinity,
),
),
),
// 右上角操作按钮
WinBtns(
leading: Row(
children: [
...
],
),
),
],
),
),
// 右侧主面板
Expanded(
child: Container(
child: widget.child,
),
),
],
),
),
],
),
),
);
return ScrollConfiguration(
behavior: CustomScrollBehavior(),
child: Column(
children: [
Container(
padding: EdgeInsets.all(10.0),
child: Column(
spacing: 10.0,
children: [
...
],
),
),
Container(
margin: EdgeInsets.only(bottom: 10.0),
padding: EdgeInsets.symmetric(horizontal: 20.0),
child: Row(
spacing: 5.0,
children: [
Icon(Icons.history, size: 18.0,),
Text('历史对话'),
Spacer(),
SizedBox(
height: 25.0, width: 25.0,
child: Transform.translate(
offset: Offset(3.0, 0),
child: IconButton(
onPressed: () => handleClear(),
tooltip: '清空会话',
icon: Icon(Icons.delete_sweep_outlined, size: 14.0),
padding: EdgeInsets.zero,
style: ButtonStyle(backgroundColor: WidgetStateProperty.all(Colors.grey[50])),
),
)
)
],
),
),
Expanded(
child: Obx(() {
if(chatStore.sessions.isEmpty) {
return Column(
spacing: 5.0,
children: [
SizedBox(height: 20.0,),
Image.asset('assets/images/empty.png', height: 40.0, width: 40.0,),
Text('暂无对话', style: TextStyle(color: Colors.black38), overflow: TextOverflow.ellipsis,),
],
);
}
return ListView.separated(
padding: EdgeInsets.symmetric(horizontal: 10.0),
separatorBuilder: (context, index) => SizedBox(height: 2.0),
itemCount: chatStore.sessions.length,
itemBuilder: (context, index) {
// ...
},
);
}),
),
Container(
margin: EdgeInsets.symmetric(vertical: 10.0),
padding: EdgeInsets.symmetric(horizontal: 10.0),
child: InkWell(
borderRadius: BorderRadius.circular(10.0),
child: Container(
padding: EdgeInsets.symmetric(horizontal: 10.0, vertical: 5.0),
child: Row(
spacing: 5.0,
children: [
Image.asset('assets/images/avatar.png',height: 30.0,width: 30.0,fit: BoxFit.cover),
Text('Andy'),
Spacer(),
Icon(Icons.arrow_forward_ios_rounded, color: Colors.grey, size: 10.0,)
],
),
),
onTap: () {
Get.toNamed('/setting');
},
),
),
],
),
);
flutter3自定义编辑框
return Container(
width: double.infinity,
padding: EdgeInsets.symmetric(vertical: 10.0),
child: Column(
spacing: 6.0,
children: [
// 技能栏
if (widget.skillbar)
ScrollConfiguration(
behavior: CustomScrollBehavior(),
child: SingleChildScrollView(
scrollDirection: Axis.horizontal,
padding: EdgeInsets.symmetric(horizontal: 15.0),
child: Row(
spacing: 4.0,
children: [
...
]
),
),
),
// 编辑框
Container(
margin: EdgeInsets.symmetric(horizontal: 15.0),
padding: EdgeInsets.all(10.0),
decoration: BoxDecoration(
color: Colors.white,
border: Border.all(color: Colors.grey.withAlpha(100), width: .5),
borderRadius: BorderRadius.circular(15.0),
boxShadow: [
BoxShadow(
color: Colors.black.withAlpha(20),
offset: Offset(0.0, 3.0),
blurRadius: 6.0,
spreadRadius: 0.0,
),
]
),
child: Column(
spacing: 10.0,
children: [
// 输入框
ConstrainedBox(
constraints: BoxConstraints(minHeight: 48.0, maxHeight: 150.0),
child: TextField(
...
),
),
// 操作栏
Row(
spacing: 10.0,
children: [
SizedBox(
height: 30.0,
child: TextButton(
onPressed: () {
setState(() {
isDeep =! isDeep;
});
},
style: ButtonStyle(
backgroundColor: WidgetStateProperty.all(isDeep ? Color(0xFF4F6BFE).withAlpha(30) : Colors.grey[200]),
padding: WidgetStateProperty.all(EdgeInsets.symmetric(horizontal: 10.0)),
),
child: Row(
spacing: 4.0,
children: [
Icon(Icons.stream, color: isDeep ? Color(0xFF4F6BFE) : Colors.black, size: 18.0,),
Text('深度思考(R1)', style: TextStyle(color: isDeep ? Color(0xFF4F6BFE) : Colors.black, fontSize: 13.0),),
],
),
),
),
SizedBox(
height: 30.0,
child: TextButton(
onPressed: () {
setState(() {
isNetwork =! isNetwork;
});
},
style: ButtonStyle(
backgroundColor: WidgetStateProperty.all(isNetwork ? Color(0xFF4F6BFE).withAlpha(30) : Colors.grey[200]),
padding: WidgetStateProperty.all(EdgeInsets.symmetric(horizontal: 10.0)),
),
child: Row(
spacing: 4.0,
children: [
Icon(Icons.travel_explore, color: isNetwork ? Color(0xFF4F6BFE) : Colors.black, size: 18.0,),
Text('联网', style: TextStyle(color: isNetwork ? Color(0xFF4F6BFE) : Colors.black, fontSize: 13.0),),
],
),
),
),
Spacer(),
SizedBox(
height: 30.0,
width: 30.0,
child: PopupMenuButton(
icon: Icon(Icons.add),
padding: EdgeInsets.zero,
tooltip: '',
offset: Offset(-35.0, 0),
constraints: BoxConstraints(maxWidth: 160),
color: Colors.white,
itemBuilder: (BuildContext context) {
return [
PopupMenuItem(value: 'camera', height: 40.0, child: Row(spacing: 5.0, children: [Icon(Icons.camera_alt_outlined), Text('拍照识文字')],)),
PopupMenuItem(value: 'image', height: 40.0, child: Row(spacing: 5.0, children: [Icon(Icons.image_outlined), Text('图片识文字')],)),
PopupMenuItem(value: 'file', height: 40.0, child: Row(spacing: 5.0, children: [Icon(Icons.file_present_outlined), Text('文件')],)),
];
},
onSelected: (value) {
debugPrint(value);
},
),
),
SizedBox(
height: 30.0,
width: 30.0,
child: IconButton(
onPressed: disabled ? null : () => handleSubmit(),
icon: loading ?
SizedBox(height: 16.0, width: 16.0, child: CircularProgressIndicator(color: Colors.white, strokeWidth: 2.0,))
:
Icon(Icons.send, color: Colors.white, size: 18.0)
,
style: ButtonStyle(
backgroundColor: WidgetStateProperty.all(disabled ? Color(0xFF4F6BFE).withAlpha(100) : Color(0xFF4F6BFE)),
padding: WidgetStateProperty.all(EdgeInsets.zero)
),
disabledColor: Colors.red,
),
)
],
),
],
),
),
],
)
);flutter3集成deepseek api
final response = await dio.post(
'$baseURL/v1/chat/completions',
options: Options(
// 响应超时
receiveTimeout: const Duration(seconds: 60),
headers: {
"Content-Type": "application/json",
"Authorization": "Bearer $apiKEY",
},
// 设置响应类型为流式响应
responseType: ResponseType.stream,
),
data: {
// 多轮会话
'messages': widget.multiConversation ? chatStore.historySession : [{'role': 'user', 'content': editorValue}],
'model': 'deepseek-chat', // deepseek-chat对话模型 deepseek-reasoner推理模型
'stream': true, // 流式输出
'max_tokens': 8192, // 限制一次请求中模型生成 completion 的最大 token 数(默认使用 4096)
'temperature': 0.4, // 严谨采样 越低越严谨(默认1)
}
);作者：xiaoyan2017
链接：https://www.cnblogs.com/xiaoyan2017/p/18912059
来源：博客园
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