add

frontend/asset_assistant/lib/login/login_page.dart

@@ -0,0 +1,128 @@
+import 'package:flutter/material.dart';
+import 'package:dio/dio.dart';
+
+class LoginPage extends StatefulWidget {
+  const LoginPage({super.key});
+
+  @override
+  State<LoginPage> createState() => _LoginPageState();
+}
+
+class _LoginPageState extends State<LoginPage> {
+  final _formKey = GlobalKey<FormState>();
+  final _usernameController = TextEditingController();
+  final _passwordController = TextEditingController();
+  bool _isLoading = false;
+  final _dio = Dio();
+
+  Future<void> _submitForm() async {
+    if (_formKey.currentState!.validate()) {
+      setState(() {
+        _isLoading = true;
+      });
+
+      try {
+        final response = await _dio.post(
+          'https://api.fishestlife.com/user/login',
+          data: {
+            'username': _usernameController.text.trim(),
+            'password': _passwordController.text.trim(),
+          },
+        );
+
+        // 登录成功处理
+        if (response.statusCode == 200) {
+          // 这里根据实际返回的数据结构处理
+          if (mounted) {
+            ScaffoldMessenger.of(
+              context,
+            ).showSnackBar(const SnackBar(content: Text('登录成功')));
+            // 导航到主页或其他页面
+            // Navigator.pushReplacement(...);
+          }
+        }
+      } catch (e) {
+        // 错误处理
+        if (mounted) {
+          ScaffoldMessenger.of(
+            context,
+          ).showSnackBar(SnackBar(content: Text('登录失败: ${e.toString()}')));
+        }
+      } finally {
+        if (mounted) {
+          setState(() {
+            _isLoading = false;
+          });
+        }
+      }
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return Scaffold(
+      appBar: AppBar(title: const Text('登录')),
+      body: Padding(
+        padding: const EdgeInsets.all(16.0),
+        child: Form(
+          key: _formKey,
+          child: Column(
+            mainAxisAlignment: MainAxisAlignment.center,
+            children: [
+              TextFormField(
+                controller: _usernameController,
+                decoration: const InputDecoration(
+                  labelText: '用户名',
+                  prefixIcon: Icon(Icons.person),
+                  border: OutlineInputBorder(),
+                ),
+                validator: (value) {
+                  if (value == null || value.isEmpty) {
+                    return '请输入用户名';
+                  }
+                  return null;
+                },
+                enabled: !_isLoading,
+              ),
+              const SizedBox(height: 16),
+              TextFormField(
+                controller: _passwordController,
+                decoration: const InputDecoration(
+                  labelText: '密码',
+                  prefixIcon: Icon(Icons.lock),
+                  border: OutlineInputBorder(),
+                ),
+                obscureText: true,
+                validator: (value) {
+                  if (value == null || value.isEmpty) {
+                    return '请输入密码';
+                  }
+                  return null;
+                },
+                enabled: !_isLoading,
+              ),
+              const SizedBox(height: 24),
+              SizedBox(
+                width: double.infinity,
+                child: ElevatedButton(
+                  onPressed: _isLoading ? null : _submitForm,
+                  child: _isLoading
+                      ? const CircularProgressIndicator()
+                      : const Text('登录'),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+
+  @override
+  void dispose() {
+    _usernameController.dispose();
+    _passwordController.dispose();
+    _dio.close();
+    super.dispose();
+  }
+}

frontend/asset_assistant/lib/main.dart

@@ -1,3 +1,4 @@
+import 'package:asset_assistant/login/login_page.dart';
 import 'package:flutter/material.dart';
 
 void main() {
@@ -7,46 +8,23 @@ void main() {
 class MyApp extends StatelessWidget {
   const MyApp({super.key});
 
-  // This widget is the root of your application.
   @override
   Widget build(BuildContext context) {
     return MaterialApp(
       title: 'Flutter Demo',
       theme: ThemeData(
-        // This is the theme of your application.
-        //
-        // TRY THIS: Try running your application with "flutter run". You'll see
-        // the application has a purple toolbar. Then, without quitting the app,
-        // try changing the seedColor in the colorScheme below to Colors.green
-        // and then invoke "hot reload" (save your changes or press the "hot
-        // reload" button in a Flutter-supported IDE, or press "r" if you used
-        // the command line to start the app).
-        //
-        // Notice that the counter didn't reset back to zero; the application
-        // state is not lost during the reload. To reset the state, use hot
-        // restart instead.
-        //
-        // This works for code too, not just values: Most code changes can be
-        // tested with just a hot reload.
         colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
       ),
-      home: const MyHomePage(title: 'Flutter Demo Home Page'),
+      // 将home改为LoginPage
+      home: const LoginPage(),
     );
   }
 }
 
+// 以下MyHomePage代码可以保留或删除，根据实际需求决定
 class MyHomePage extends StatefulWidget {
   const MyHomePage({super.key, required this.title});
 
-  // This widget is the home page of your application. It is stateful, meaning
-  // that it has a State object (defined below) that contains fields that affect
-  // how it looks.
-
-  // This class is the configuration for the state. It holds the values (in this
-  // case the title) provided by the parent (in this case the App widget) and
-  // used by the build method of the State. Fields in a Widget subclass are
-  // always marked "final".
-
   final String title;
 
   @override
@@ -58,50 +36,19 @@ class _MyHomePageState extends State<MyHomePage> {
 
   void _incrementCounter() {
     setState(() {
-      // This call to setState tells the Flutter framework that something has
-      // changed in this State, which causes it to rerun the build method below
-      // so that the display can reflect the updated values. If we changed
-      // _counter without calling setState(), then the build method would not be
-      // called again, and so nothing would appear to happen.
       _counter++;
     });
   }
 
   @override
   Widget build(BuildContext context) {
-    // This method is rerun every time setState is called, for instance as done
-    // by the _incrementCounter method above.
-    //
-    // The Flutter framework has been optimized to make rerunning build methods
-    // fast, so that you can just rebuild anything that needs updating rather
-    // than having to individually change instances of widgets.
     return Scaffold(
       appBar: AppBar(
-        // TRY THIS: Try changing the color here to a specific color (to
-        // Colors.amber, perhaps?) and trigger a hot reload to see the AppBar
-        // change color while the other colors stay the same.
         backgroundColor: Theme.of(context).colorScheme.inversePrimary,
-        // Here we take the value from the MyHomePage object that was created by
-        // the App.build method, and use it to set our appbar title.
         title: Text(widget.title),
       ),
       body: Center(
-        // Center is a layout widget. It takes a single child and positions it
-        // in the middle of the parent.
         child: Column(
-          // Column is also a layout widget. It takes a list of children and
-          // arranges them vertically. By default, it sizes itself to fit its
-          // children horizontally, and tries to be as tall as its parent.
-          //
-          // Column has various properties to control how it sizes itself and
-          // how it positions its children. Here we use mainAxisAlignment to
-          // center the children vertically; the main axis here is the vertical
-          // axis because Columns are vertical (the cross axis would be
-          // horizontal).
-          //
-          // TRY THIS: Invoke "debug painting" (choose the "Toggle Debug Paint"
-          // action in the IDE, or press "p" in the console), to see the
-          // wireframe for each widget.
           mainAxisAlignment: MainAxisAlignment.center,
           children: <Widget>[
             const Text('You have pushed the button this many times:'),
@@ -116,7 +63,7 @@ class _MyHomePageState extends State<MyHomePage> {
         onPressed: _incrementCounter,
         tooltip: 'Increment',
         child: const Icon(Icons.add),
-      ), // This trailing comma makes auto-formatting nicer for build methods.
+      ),
     );
   }
 }

frontend/asset_assistant/pubspec.lock

@@ -49,6 +49,22 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.0.8"
+  dio:
+    dependency: "direct main"
+    description:
+      name: dio
+      sha256: d90ee57923d1828ac14e492ca49440f65477f4bb1263575900be731a3dac66a9
+      url: "https://pub.dev"
+    source: hosted
+    version: "5.9.0"
+  dio_web_adapter:
+    dependency: transitive
+    description:
+      name: dio_web_adapter
+      sha256: "7586e476d70caecaf1686d21eee7247ea43ef5c345eab9e0cc3583ff13378d78"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.1.1"
   fake_async:
     dependency: transitive
     description:
@@ -75,6 +91,14 @@ packages:
     description: flutter
     source: sdk
     version: "0.0.0"
+  http_parser:
+    dependency: transitive
+    description:
+      name: http_parser
+      sha256: "178d74305e7866013777bab2c3d8726205dc5a4dd935297175b19a23a2e66571"
+      url: "https://pub.dev"
+    source: hosted
+    version: "4.1.2"
   leak_tracker:
     dependency: transitive
     description:
@@ -131,6 +155,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "1.16.0"
+  mime:
+    dependency: transitive
+    description:
+      name: mime
+      sha256: "41a20518f0cb1256669420fdba0cd90d21561e560ac240f26ef8322e45bb7ed6"
+      url: "https://pub.dev"
+    source: hosted
+    version: "2.0.0"
   path:
     dependency: transitive
     description:
@@ -192,6 +224,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "0.7.6"
+  typed_data:
+    dependency: transitive
+    description:
+      name: typed_data
+      sha256: f9049c039ebfeb4cf7a7104a675823cd72dba8297f264b6637062516699fa006
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.4.0"
   vector_math:
     dependency: transitive
     description:
@@ -208,6 +248,14 @@ packages:
       url: "https://pub.dev"
     source: hosted
     version: "15.0.2"
+  web:
+    dependency: transitive
+    description:
+      name: web
+      sha256: "868d88a33d8a87b18ffc05f9f030ba328ffefba92d6c127917a2ba740f9cfe4a"
+      url: "https://pub.dev"
+    source: hosted
+    version: "1.1.1"
 sdks:
   dart: ">=3.9.2 <4.0.0"
   flutter: ">=3.18.0-18.0.pre.54"

frontend/asset_assistant/pubspec.yaml

@@ -31,8 +31,7 @@ dependencies:
   flutter:
     sdk: flutter
   
-  # The following adds the Cupertino Icons font to your application.
+  dio: ^5.3.3  # 网络请求库
-  # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.8
 
 dev_dependencies: