flutter3-deepseek流式AI模板|Flutter3.27+Dio+DeepSeeek聊天ai助手

# 项目名称APP_NAME = 'Flutter3-DeepSeek'# DeepSeek API配置DEEPSEEK_API_KEY = your apikeyDEEPSEEK_BASE_URL = https://api.deepseek.com

import 'dart:io';import'package:flutter/material.dart';import'package:get/get.dart';import'package:get_storage/get_storage.dart';import'package:shirne_dialog/shirne_dialog.dart';import'package:flutter_dotenv/flutter_dotenv.dart';import'controller/app.dart';import'controller/chat.dart';//引入路由配置import 'router/index.dart';void main() async { //初始化存储服务 await GetStorage.init(); //将.env文件内容加载到dotenv中 await dotenv.load(fileName: '.env');//注册GetxController Get.put(AppStore()); Get.put(ChatStore()); runApp(const MyApp());}class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { //获取AppStore实例 final appStore =AppStore.to;return GetMaterialApp( title: 'Flutter3 DeepSeek', debugShowCheckedModeBanner: false, theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: Color(0xFF4F6BFE)), useMaterial3: true, fontFamily: Platform.isWindows ? 'Microsoft YaHei' : null, ), //初始路由 initialRoute: appStore.isLogin ? '/' : '/login',//路由页面 getPages: routePages, navigatorKey: MyDialog.navigatorKey, localizationsDelegates: [ ShirneDialogLocalizations.delegate, ], ); }}

@overrideWidget build(BuildContext context) { return Scaffold( key: scaffoldKey, backgroundColor: Colors.white, appBar: AppBar( ... actions: [ IconButton(icon: Icon(Icons.try_sms_star_outlined), onPressed: () => handleCreate(),), ], ), body: Center( child: ConstrainedBox( constraints: BoxConstraints( maxWidth: 750.0, ), child: Flex( direction: Axis.vertical, crossAxisAlignment: CrossAxisAlignment.start, children: [ Expanded( child: Stack( children: [ GestureDetector( child: ScrollConfiguration( behavior: CustomScrollBehavior().copyWith(scrollbars: false),//GetBuilder响应流式输出 child: Obx(() { if (chatStore.currentMessages.isEmpty) { //欢迎信息return Welcome( onChanged: (value) { textEditingController.text = value; }, ); } return ListView.builder( keyboardDismissBehavior: ScrollViewKeyboardDismissBehavior.onDrag, //当滚动时候隐藏键盘 controller: scrollController, padding: EdgeInsets.all(10.0), reverse: true, shrinkWrap: true, itemCount: chatStore.currentMessages.length, itemBuilder: (context, index) { ... } ); }), ), onTap: () { focusNode.unfocus(); }, ), //滚动到底部 AnimatedPositioned( ... ), ], ), ), //底部编辑器区域 ChatEditor(controller: textEditingController), ] ), ), ), //侧边栏 drawer: Drawer( child: Sidebar(), ), );}

import 'package:flutter/material.dart';import'package:get/get.dart';import'../controller/app.dart';import'../pages/auth/login.dart';import'../pages/auth/register.dart';import'../pages/index/index.dart';import'../pages/aihub/index.dart';import'../pages/setting/index.dart';//路由地址集合final Map<String, Widget> routes ={'/': Home(), '/aihub': Aihub(), '/setting': Setting(),};final List<GetPage> routeList = routes.entries.map((e) => GetPage( name: e.key, //路由名称 page: () => e.value, //路由页面 transition: Transition.rightToLeftWithFade, //跳转路由动画 middlewares: [RouteMiddleware()], //路由中间件)).toList();final List<GetPage> routePages = [ GetPage(name: '/login', page: () => const Login()), GetPage(name: '/register', page: () => const Register()), ...routeList,];//路由中间件拦截验证class RouteMiddleware extends GetMiddleware { final appStore = AppStore.to; @override RouteSettings? redirect(String? route) { return appStore.isLogin ? null : const RouteSettings(name: '/login'); }}

import 'package:flutter/material.dart';import'package:flutter/services.dart';import'package:get/get.dart';import'package:flutter_markdown/flutter_markdown.dart';import'package:flutter_highlight/flutter_highlight.dart';import'package:flutter_highlight/themes/github.dart';import'package:url_launcher/url_launcher.dart';import'package:easy_image_viewer/easy_image_viewer.dart';import'package:markdown/markdown.dart' as md;class FMarkdown extends StatefulWidget { const FMarkdown({ super.key, required this.data, }); final String data; @override State<FMarkdown> createState() => _FMarkdownState();}class _FMarkdownState extends State<FMarkdown> { @override Widget build(BuildContext context) { return MarkdownBody( data: widget.data, fitContent: false, styleSheet: MarkdownStyleSheet( blockSpacing: 12.0,//表格 tableBorder: TableBorder.all(color: Colors.black12), //水平线 horizontalRuleDecoration: BoxDecoration( border: Border(top: BorderSide(color: Colors.black12, width: 1.0)), ), //代码块 codeblockDecoration: BoxDecoration( color: Color(0xfff8f8f8), borderRadius: BorderRadius.circular(10.0), ), //引用 blockquotePadding: EdgeInsets.only(left: 16.0, top: 8.0, bottom: 8.0), blockquoteDecoration: BoxDecoration( border: Border(left: BorderSide(color: Colors.black12, width: 4.0)), ) ), builders: { //自定义代码/代码块构建'code': CustomCodeBuilder(), }, //自定义图片构建 sizedImageBuilder: (config) => ImageBuilderWidget(config: config), //点击链接 onTapLink: (text, href, title) async { if (href != null) { if(await canLaunchUrl(Uri.parse(href))) { await launchUrl(Uri.parse(href)); }else { debugPrint('无法访问 $href'); } } }, ); }}

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)});