暂时把bug先处理掉了，准备尝试实现最小播放目标

lib/services/webdav_service.dart

@@ -1,5 +1,7 @@
-import 'package:webdav_client/webdav_client.dart';
+import 'dart:convert';
+import 'package:dio/dio.dart';
 import 'package:shared_preferences/shared_preferences.dart';
+import 'package:xml/xml.dart';
 
 class WebDAVService {
   static const String _keyBaseUrl = 'webdav_base_url';
@@ -11,10 +13,13 @@ class WebDAVService {
 
   WebDAVService._();
 
-  WebDAVClient? _client;
+  Dio? _dio;
   String? _baseUrl;
+  String? _username;
 
-  bool get isConnected => _client != null;
+  bool get isConnected => _dio != null;
+  String? get baseUrl => _baseUrl;
+  String? get username => _username;
 
   // 保存凭据
   Future<void> saveCredentials(
@@ -23,11 +28,16 @@ class WebDAVService {
     await prefs.setString(_keyBaseUrl, baseUrl);
     await prefs.setString(_keyUsername, username);
     await prefs.setString(_keyPassword, password);
+
     _baseUrl = baseUrl;
-    _client = WebDAVClient(
-      baseUri: Uri.parse(baseUrl),
-      credentials: '$username:$password',
-    );
+    _username = username;
+    _dio = Dio(BaseOptions(
+      baseUrl: baseUrl,
+      headers: {
+        'Authorization':
+            'Basic ${base64Encode(utf8.encode('$username:$password'))}',
+      },
+    ));
   }
 
   // 加载已保存的凭据
@@ -36,12 +46,17 @@ class WebDAVService {
     final baseUrl = prefs.getString(_keyBaseUrl);
     final username = prefs.getString(_keyUsername);
     final password = prefs.getString(_keyPassword);
+
     if (baseUrl != null && username != null && password != null) {
       _baseUrl = baseUrl;
-      _client = WebDAVClient(
-        baseUri: Uri.parse(baseUrl),
-        credentials: '$username:$password',
-      );
+      _username = username;
+      _dio = Dio(BaseOptions(
+        baseUrl: baseUrl,
+        headers: {
+          'Authorization':
+              'Basic ${base64Encode(utf8.encode('$username:$password'))}',
+        },
+      ));
       return true;
     }
     return false;
@@ -53,36 +68,108 @@ class WebDAVService {
     await prefs.remove(_keyBaseUrl);
     await prefs.remove(_keyUsername);
     await prefs.remove(_keyPassword);
-    _client = null;
+    _dio = null;
     _baseUrl = null;
+    _username = null;
   }
 
-  // 获取音乐文件列表（仅 .mp3 .flac .m4a .ape .wav）
+  // 获取音乐文件列表（通过 PROPFIND）
   Future<List<WebDAVFileItem>> getMusicFiles({String path = '/'}) async {
-    if (_client == null) throw Exception('WebDAV 未连接');
+    if (_dio == null) throw Exception('WebDAV 未连接');
 
-    final items = await _client!.listAll(recursive: true);
+    // PROPFIND 请求体（Depth: 1 表示获取子项）
+    final body = '''
+<?xml version="1.0" encoding="utf-8"?>
+<propfind xmlns="DAV:">
+  <prop>
+    <resourcetype/>
+    <getcontentlength/>
+    <getlastmodified/>
+  </prop>
+</propfind>
+    ''';
+
+    final response = await _dio!.request(
+      path,
+      options: Options(
+        method: 'PROPFIND',
+        headers: {
+          'Depth': '1',
+          'Content-Type': 'application/xml; charset=utf-8',
+        },
+      ),
+      data: body,
+    );
+
+    if (response.statusCode != 207) {
+      throw Exception('WebDAV 响应异常: ${response.statusCode}');
+    }
+
+    final xml = XmlDocument.parse(response.data as String);
     final musicExtensions = ['.mp3', '.flac', '.m4a', '.ape', '.wav', '.opus'];
 
-    return items
-        .where((item) =>
-            item.isFile &&
-            musicExtensions.any((ext) => item.path.toLowerCase().endsWith(ext)))
-        .map((item) => WebDAVFileItem(
-              path: item.path,
-              name: item.path.split('/').last,
-              size: item.size,
-              modified: item.modified,
-            ))
-        .toList();
+    final items = <WebDAVFileItem>[];
+
+    // 查找所有响应项
+    for (final responseNode in xml.findAllElements('response')) {
+      final hrefNode = responseNode.findElements('href').firstOrNull;
+      if (hrefNode == null) continue;
+
+      String fullPath = Uri.decodeComponent(hrefNode.text.trim());
+      // 去掉 baseUrl 前缀，得到相对路径
+      String relativePath = fullPath;
+      if (_baseUrl != null) {
+        final baseUri = Uri.parse(_baseUrl!);
+        final fullUri = Uri.parse(fullPath);
+        relativePath = fullUri.path;
+        if (baseUri.path.isNotEmpty && relativePath.startsWith(baseUri.path)) {
+          relativePath = relativePath.substring(baseUri.path.length);
+        }
+      }
+      if (relativePath.isEmpty || relativePath == '/') continue;
+
+      // 检查是否是文件（非集合）
+      final resTypeNode = responseNode.findElements('resourcetype').firstOrNull;
+      final isCollection =
+          resTypeNode?.findElements('collection').isNotEmpty ?? false;
+      if (isCollection) continue;
+
+      // 检查扩展名
+      final fileName = relativePath.split('/').last;
+      if (!musicExtensions.any((ext) => fileName.toLowerCase().endsWith(ext)))
+        continue;
+
+      // 获取文件大小和修改时间
+      int? size;
+      DateTime? modified;
+      final sizeNode =
+          responseNode.findElements('getcontentlength').firstOrNull;
+      if (sizeNode != null) {
+        size = int.tryParse(sizeNode.text);
+      }
+      final modifiedNode =
+          responseNode.findElements('getlastmodified').firstOrNull;
+      if (modifiedNode != null) {
+        try {
+          modified = DateTime.parse(modifiedNode.text);
+        } catch (_) {}
+      }
+
+      items.add(WebDAVFileItem(
+        path: relativePath,
+        name: fileName,
+        size: size,
+        modified: modified,
+      ));
+    }
+
+    return items;
   }
 
-  // 获取文件的完整下载 URL（用于播放）
+  // 获取文件的完整 URL
   String getFileUrl(String path) {
     if (_baseUrl == null) throw Exception('WebDAV 未配置');
-    // 确保 baseUrl 末尾有 '/'
     final base = _baseUrl!.endsWith('/') ? _baseUrl! : '$_baseUrl/';
-    // 去掉路径开头的 '/'
     final cleanPath = path.startsWith('/') ? path.substring(1) : path;
     return '$base$cleanPath';
   }