add

frontend/asset_assistant/lib/pages/login_page.dart

@@ -1,4 +1,5 @@
 import 'package:asset_assistant/pages/home_page.dart';
+import 'package:asset_assistant/utils/host_utils.dart';
 import 'package:flutter/material.dart';
 import 'package:dio/dio.dart';
 import 'package:shared_preferences/shared_preferences.dart';
@@ -40,7 +41,7 @@ class _LoginPageState extends State<LoginPage> {
 
     try {
       // 构建请求URL
-      const baseUrl = 'https://api.fishestlife.com';
+      final baseUrl = HostUtils().currentHost;
       const path = '/user/login';
       final url = '$baseUrl$path';
       debugPrint('请求URL: $url');

frontend/asset_assistant/lib/utils/host_utils.dart

@@ -0,0 +1,22 @@
+// Host
+class HostUtils {
+  // 单例实例
+  static final HostUtils _instance = HostUtils._internal();
+
+  // 工厂构造函数，确保全局唯一实例
+  factory HostUtils() => _instance;
+
+  // 私有构造函数
+  HostUtils._internal();
+
+  // 根据运行环境获取当前Host
+  String get currentHost {
+    // 区分debug和release环境
+    bool isDebug = false;
+    assert(() {
+      isDebug = true;
+      return true;
+    }());
+    return isDebug ? 'http://127.0.0.1:20000' : 'https://api.fishestlife.com';
+  }
+}