启用本机服务时，支持多端口备用

lib/config/constant.dart

@@ -5,18 +5,20 @@ class Constant {
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   ///
   ///
   /// 应用内部 http 服务
   /// 应用内部 http 服务
-  static const int localServerPort = 35982;
-
+  ///
   // static const String localServerHost = 'appdev-xj.banxiaoer.net';
   // static const String localServerHost = 'appdev-xj.banxiaoer.net';
   static const String localServerHost = '127.0.0.1';
   static const String localServerHost = '127.0.0.1';
 
 
-  static const String localServerUrl = 'http://$localServerHost:$localServerPort';
+  static int localServerPort = 35982;
+  static const localServerPortOption = [35982, 35983, 35984];
 
 
-  static const String localFileUrl = 'http://127.0.0.1:$localServerPort';
+  static final String localServerUrl = 'http://$localServerHost:$localServerPort';
+
+  static final String localFileUrl = 'http://127.0.0.1:$localServerPort';
   static const String localServerTemp = '/temp';
   static const String localServerTemp = '/temp';
-  static const String localServerTempFileUrl = '$localFileUrl$localServerTemp';
+  static final String localServerTempFileUrl = '$localFileUrl$localServerTemp';
   static const String localServerTest = '/test';
   static const String localServerTest = '/test';
-  static const String localServerTestFileUrl = '$localFileUrl$localServerTest';
+  static final String localServerTestFileUrl = '$localFileUrl$localServerTest';
 
 
   /// obs 相关
   /// obs 相关
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
@@ -28,7 +30,8 @@ class Constant {
   static const String obsLogicPrefix = EnvConfig.env == 'dev' ? 'd2/pridel/user/' : 'p2/unpridel/user/';
   static const String obsLogicPrefix = EnvConfig.env == 'dev' ? 'd2/pridel/user/' : 'p2/unpridel/user/';
 
 
   // 定义obs存储业务上的关键业务类型，属于这种类型的业务，在存储上区分其分属于何种删除规则
   // 定义obs存储业务上的关键业务类型，属于这种类型的业务，在存储上区分其分属于何种删除规则
-  static const List<String> obsPridelFileConfigs = ['homework',
+  static const List<String> obsPridelFileConfigs = [
+    'homework',
     'clockin',
     'clockin',
     'clock',
     'clock',
     'clazzclock',
     'clazzclock',
@@ -40,13 +43,14 @@ class Constant {
     'txbb',
     'txbb',
     'dictation',
     'dictation',
     'xegd',
     'xegd',
-                                                'kouyu'];
+    'kouyu'
+  ];
 
 
   /// 版本相关
   /// 版本相关
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   ///
   ///
   /// app 版本号规则
   /// app 版本号规则
-  static const String appVersion = '1.0.2512112';
+  static const String appVersion = '1.0.2512114';
 
 
   /// H5的起始终最低版本号规则
   /// H5的起始终最低版本号规则
   static const String h5Version = '1.0.0';
   static const String h5Version = '1.0.0';
@@ -79,7 +83,6 @@ class Constant {
   static const String wxAppId = 'wx8c32ea248f0c7765';
   static const String wxAppId = 'wx8c32ea248f0c7765';
   static const String universalLink = 'https://dev.banxiaoer.net/path/to/wechat/';
   static const String universalLink = 'https://dev.banxiaoer.net/path/to/wechat/';
 
 
-
   /// IM 相关
   /// IM 相关
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   /// /////////////////////////////////////////////////////////////////////////////////////////////////////////////////
   ///
   ///

lib/services/local_server_service.dart

@@ -16,8 +16,21 @@ class LocalServerService {
     // 测试情况下, 每次启动服务，先解压dist文件
     // 测试情况下, 每次启动服务，先解压dist文件
     await _extractDist();
     await _extractDist();
 
 
-    HttpServer server = await HttpServer.bind(InternetAddress.loopbackIPv4, Constant.localServerPort);
+    late HttpServer server;
+    int maxRetries = Constant.localServerPortOption.length;
+    for (int i = 0; i < maxRetries; i++) {
+      try {
+        server = await HttpServer.bind(InternetAddress.loopbackIPv4, Constant.localServerPortOption[i]);
+        Constant.localServerPort = server.port;
         print('本地服务器启动在端口: ${server.port}');
         print('本地服务器启动在端口: ${server.port}');
+        break;
+      } on SocketException catch (e) {
+        print('端口 ${Constant.localServerPortOption[i]} 被占用，尝试下一个端口...');
+        if (i == maxRetries - 1) {
+          throw Exception('端口全部被占用，本地服务启动失败');
+        }
+      }
+    }
 
 
     server.listen((HttpRequest request) async {
     server.listen((HttpRequest request) async {
       final String requestPath = request.uri.path == '/' ? '/index.html' : request.uri.path;
       final String requestPath = request.uri.path == '/' ? '/index.html' : request.uri.path;