测试

lib/config/locator.dart

@@ -23,6 +23,7 @@ import 'package:appframe/data/repositories/message/scan_code_handler.dart';
 import 'package:appframe/data/repositories/message/set_title_handler.dart';
 import 'package:appframe/data/repositories/message/set_title_handler.dart';
 import 'package:appframe/data/repositories/message/storage_handler.dart';
 import 'package:appframe/data/repositories/message/storage_handler.dart';
 import 'package:appframe/data/repositories/message/upload_file.dart';
 import 'package:appframe/data/repositories/message/upload_file.dart';
+import 'package:appframe/data/repositories/message/upload_file2.dart';
 import 'package:appframe/data/repositories/message/vibrate_short_handler.dart';
 import 'package:appframe/data/repositories/message/vibrate_short_handler.dart';
 import 'package:appframe/data/repositories/message/video_info_handler.dart';
 import 'package:appframe/data/repositories/message/video_info_handler.dart';
 import 'package:appframe/data/repositories/message/wifi_info_handler.dart';
 import 'package:appframe/data/repositories/message/wifi_info_handler.dart';
@@ -155,7 +156,8 @@ Future<void> setupLocator() async {
   getIt.registerLazySingleton<MessageHandler>(() => ScanCodeHandler(), instanceName: 'scanCode');
   getIt.registerLazySingleton<MessageHandler>(() => ScanCodeHandler(), instanceName: 'scanCode');
 
 
   /// 上传文件
   /// 上传文件
-  getIt.registerLazySingleton<MessageHandler>(() => UploadFileHandler(), instanceName: 'uploadFile');
+  // getIt.registerLazySingleton<MessageHandler>(() => UploadFileHandler(), instanceName: 'uploadFile');
+  getIt.registerLazySingleton<MessageHandler>(() => UploadFile2Handler(), instanceName: 'uploadFile');
 
 
   /// 下载文件
   /// 下载文件
   getIt.registerLazySingleton<MessageHandler>(() => DownloadFileHandler(), instanceName: 'downloadFile');
   getIt.registerLazySingleton<MessageHandler>(() => DownloadFileHandler(), instanceName: 'downloadFile');

lib/data/repositories/message/upload_file.dart

@@ -6,10 +6,13 @@ import 'package:appframe/services/dispatcher.dart';
 import 'package:appframe/utils/file_type_util.dart';
 import 'package:appframe/utils/file_type_util.dart';
 import 'package:dio/dio.dart';
 import 'package:dio/dio.dart';
 import 'package:flutter/foundation.dart';
 import 'package:flutter/foundation.dart';
+import 'package:logger/logger.dart';
 import 'package:path/path.dart' as path;
 import 'package:path/path.dart' as path;
 import 'package:uuid/uuid.dart';
 import 'package:uuid/uuid.dart';
 
 
 class UploadFileHandler extends MessageHandler {
 class UploadFileHandler extends MessageHandler {
+  static final upLogger = Logger(level: Level.debug);
+
   @override
   @override
   Future handleMessage(params) async {
   Future handleMessage(params) async {
     if (params is! Map<String, dynamic>) {
     if (params is! Map<String, dynamic>) {
@@ -30,9 +33,18 @@ class UploadFileHandler extends MessageHandler {
       throw Exception('参数错误');
       throw Exception('参数错误');
     }
     }
     
     
+    final startTimestamp = DateTime.now().millisecondsSinceEpoch;
+    upLogger.d('开始上传文件');
+
     final result = await compute(_handleUpload, {'filePath': tempFilePath, 'busi': busi, 'subBusi': subBusi});
     final result = await compute(_handleUpload, {'filePath': tempFilePath, 'busi': busi, 'subBusi': subBusi});
     // final result = await _handleUpload({'filePath': tempFilePath});
     // final result = await _handleUpload({'filePath': tempFilePath});
 
 
+    final endTimestamp = DateTime.now().millisecondsSinceEpoch;
+    upLogger.d('上传完成，耗时：${endTimestamp - startTimestamp} 毫秒');
+
+    result['startTimestamp'] = startTimestamp;
+    result['sendTimestamp'] = endTimestamp;
+
     return result;
     return result;
   }
   }
 
 
@@ -47,12 +59,6 @@ class UploadFileHandler extends MessageHandler {
     String busi = fileParams['busi'] as String;
     String busi = fileParams['busi'] as String;
     String subBusi = fileParams['subBusi'] as String;
     String subBusi = fileParams['subBusi'] as String;
 
 
-    print('参数-------');
-    print('filePath:$filePath ');
-    print('busi:$busi ');
-    print('subBusi:$subBusi ');
-    print('参数-------');
-
     if (filePath.startsWith(Constant.localServerUrl)) {
     if (filePath.startsWith(Constant.localServerUrl)) {
       filePath = filePath.replaceFirst(Constant.localServerUrl, '');
       filePath = filePath.replaceFirst(Constant.localServerUrl, '');
     }
     }
@@ -67,18 +73,23 @@ class UploadFileHandler extends MessageHandler {
     final obsApiService = ApiService(defaultHeaders: {'Content-Type': '', 'Accept': ''});
     final obsApiService = ApiService(defaultHeaders: {'Content-Type': '', 'Accept': ''});
 
 
     String logicPrefix = _getLoginPrefix(busi, subBusi);
     String logicPrefix = _getLoginPrefix(busi, subBusi);
-    print('logicPrefix: $logicPrefix');
 
 
     //并行上传分段
     //并行上传分段
-    final uploadResult = await _uploadInParallel(bxeApiService, obsApiService, logicPrefix, filePath);
+    upLogger.d("开始处理并行上传");
+    final uploadResult =
+        await _uploadInParallel(bxeApiService, obsApiService, logicPrefix, filePath, maxConcurrency: 30);
+    upLogger.d("并行上传完成");
+
+    // 上传结果
     String objectKey = uploadResult['objectKey'] as String;
     String objectKey = uploadResult['objectKey'] as String;
     String bucket = uploadResult['bucket'] as String;
     String bucket = uploadResult['bucket'] as String;
     String uploadId = uploadResult['uploadId'] as String;
     String uploadId = uploadResult['uploadId'] as String;
     Map<int, String> tagsMap = uploadResult['tagsMap'] as Map<int, String>;
     Map<int, String> tagsMap = uploadResult['tagsMap'] as Map<int, String>;
 
 
     //请求合并文件
     //请求合并文件
+    upLogger.d("开始处理合并文件");
     String location = await _merge(bxeApiService, objectKey, bucket, uploadId, tagsMap);
     String location = await _merge(bxeApiService, objectKey, bucket, uploadId, tagsMap);
-    print('location: $location');
+    upLogger.d("合并文件完成");
 
 
     //关闭Dio
     //关闭Dio
     bxeApiService.close();
     bxeApiService.close();
@@ -106,10 +117,15 @@ class UploadFileHandler extends MessageHandler {
       throw Exception('上传的文件过大');
       throw Exception('上传的文件过大');
     }
     }
 
 
+    upLogger.d('文件大小：$fileSize');
+
     //分段大小2M
     //分段大小2M
     final chunkSize = Constant.obsUploadChunkSize;
     final chunkSize = Constant.obsUploadChunkSize;
+    upLogger.d('分段大小：$chunkSize');
+
     //分段总数
     //分段总数
     final totalChunks = (fileSize / chunkSize).ceil();
     final totalChunks = (fileSize / chunkSize).ceil();
+    upLogger.d('分段总数：$totalChunks');
 
 
     final randomAccessFile = file.openSync();
     final randomAccessFile = file.openSync();
 
 
@@ -127,14 +143,16 @@ class UploadFileHandler extends MessageHandler {
     // String objectKey = 'd2/test/file.csv';
     // String objectKey = 'd2/test/file.csv';
     var uuid = Uuid();
     var uuid = Uuid();
     String objectKey = '$logicPrefix/${uuid.v4()}${path.extension(file.path)}';
     String objectKey = '$logicPrefix/${uuid.v4()}${path.extension(file.path)}';
-    print('objectKey: $objectKey');
     String uploadId = '';
     String uploadId = '';
     Map<int, String> tagsMap = {};
     Map<int, String> tagsMap = {};
 
 
     final futures = <Future>[];
     final futures = <Future>[];
     for (int i = 0; i < totalChunks; i++) {
     for (int i = 0; i < totalChunks; i++) {
+      upLogger.d('开始处理分段：$i');
+
       // 控制并发数量
       // 控制并发数量
       if (futures.length >= maxConcurrency) {
       if (futures.length >= maxConcurrency) {
+        upLogger.d('超过最大并发数量，等待');
         await Future.wait(futures);
         await Future.wait(futures);
         futures.clear();
         futures.clear();
       }
       }
@@ -146,6 +164,7 @@ class UploadFileHandler extends MessageHandler {
       randomAccessFile.setPositionSync(start);
       randomAccessFile.setPositionSync(start);
       await randomAccessFile.readInto(chunk, 0, actualChunkSize);
       await randomAccessFile.readInto(chunk, 0, actualChunkSize);
 
 
+      final startTime = DateTime.now().millisecondsSinceEpoch;
       String chunkSignUrl;
       String chunkSignUrl;
       if (i == 0) {
       if (i == 0) {
         final initResult = await _init(bxeApiService, objectKey, bucket);
         final initResult = await _init(bxeApiService, objectKey, bucket);
@@ -155,7 +174,8 @@ class UploadFileHandler extends MessageHandler {
         final nextResult = await _next(bxeApiService, objectKey, bucket, uploadId, i + 1);
         final nextResult = await _next(bxeApiService, objectKey, bucket, uploadId, i + 1);
         chunkSignUrl = nextResult['signed_url'] as String;
         chunkSignUrl = nextResult['signed_url'] as String;
       }
       }
-      print('chunkSignUrl: $chunkSignUrl');
+      final endTime = DateTime.now().millisecondsSinceEpoch;
+      upLogger.d('分段$i，签名耗时：${endTime - startTime} 毫秒');
 
 
       // await _uploadChunkWithRetry(obsApiService, chunkSignUrl, i, chunk, tagsMap);
       // await _uploadChunkWithRetry(obsApiService, chunkSignUrl, i, chunk, tagsMap);
       final future = _uploadChunkWithRetry(obsApiService, chunkSignUrl, i, chunk, tagsMap);
       final future = _uploadChunkWithRetry(obsApiService, chunkSignUrl, i, chunk, tagsMap);
@@ -165,6 +185,7 @@ class UploadFileHandler extends MessageHandler {
     // 等待剩余的上传完成
     // 等待剩余的上传完成
     if (futures.isNotEmpty) {
     if (futures.isNotEmpty) {
       await Future.wait(futures);
       await Future.wait(futures);
+      futures.clear();
     }
     }
 
 
     randomAccessFile.closeSync();
     randomAccessFile.closeSync();
@@ -200,12 +221,17 @@ class UploadFileHandler extends MessageHandler {
     Map<int, String> tagsMap, {
     Map<int, String> tagsMap, {
     int maxRetries = 3,
     int maxRetries = 3,
   }) async {
   }) async {
+    final start = DateTime.now().millisecondsSinceEpoch;
+    upLogger.d('分段$chunkIndex，开始时间：$start毫秒');
+
     for (int attempt = 0; attempt <= maxRetries; attempt++) {
     for (int attempt = 0; attempt <= maxRetries; attempt++) {
       try {
       try {
-        final resp = await _uploadChunk(obsApiService, signUrl, chunk);
+        final resp = await _uploadChunk(obsApiService, signUrl, chunk, chunkIndex);
         if (resp.statusCode == 200) {
         if (resp.statusCode == 200) {
           final etags = resp.headers['etag'] as List<String>;
           final etags = resp.headers['etag'] as List<String>;
           tagsMap[chunkIndex + 1] = etags[0];
           tagsMap[chunkIndex + 1] = etags[0];
+          final end = DateTime.now().millisecondsSinceEpoch;
+          upLogger.d('分段$chunkIndex，上传段耗时：${end - start}毫秒');
           return; // 上传成功
           return; // 上传成功
         } else {
         } else {
           throw Exception('Chunk $chunkIndex upload failed: ${resp.statusCode}');
           throw Exception('Chunk $chunkIndex upload failed: ${resp.statusCode}');
@@ -221,14 +247,18 @@ class UploadFileHandler extends MessageHandler {
   }
   }
 
 
   /// 上传段
   /// 上传段
-  static Future<Response> _uploadChunk(ApiService obsApiService, String signUrl, Uint8List chunk) async {
+  static Future<Response> _uploadChunk(
+      ApiService obsApiService, String signUrl, Uint8List chunk, int chunkIndex) async {
+    final start = DateTime.now().millisecondsSinceEpoch;
+    upLogger.d('分段$chunkIndex，处理开始时间 $start');
     var url = signUrl.replaceFirst('AWSAccessKeyId=', 'AccessKeyId=').replaceFirst(':443', '');
     var url = signUrl.replaceFirst('AWSAccessKeyId=', 'AccessKeyId=').replaceFirst(':443', '');
 
 
     try {
     try {
       Response response = await obsApiService.put(url, chunk);
       Response response = await obsApiService.put(url, chunk);
+      final end = DateTime.now().millisecondsSinceEpoch;
+      upLogger.d('分段$chunkIndex，处理完成时间：${end - start}毫秒');
       return response;
       return response;
     } catch (e) {
     } catch (e) {
-      print('Chunk upload failed: $e');
       throw Exception('Chunk upload failed: $e');
       throw Exception('Chunk upload failed: $e');
     }
     }
   }
   }

lib/data/repositories/message/upload_file2.dart

+import 'dart:io';
+
+import 'package:appframe/config/constant.dart';
+import 'package:appframe/services/api_service.dart';
+import 'package:appframe/services/dispatcher.dart';
+import 'package:appframe/utils/file_type_util.dart';
+import 'package:dio/dio.dart';
+import 'package:flutter/foundation.dart';
+import 'package:logger/logger.dart';
+import 'package:path/path.dart' as path;
+import 'package:uuid/uuid.dart';
+
+class UploadFile2Handler extends MessageHandler {
+  static final upLogger = Logger(level: Level.debug);
+
+  @override
+  Future handleMessage(params) async {
+    if (params is! Map<String, dynamic>) {
+      throw Exception('参数错误');
+    }
+    final String? tempFilePath = params['tempFilePath'] as String?;
+    if (tempFilePath == null || tempFilePath.isEmpty) {
+      throw Exception('参数错误');
+    }
+
+    final String? busi = params['busi'] as String?;
+    if (busi == null || busi.isEmpty) {
+      throw Exception('参数错误');
+    }
+
+    final String? subBusi = params['subBusi'] as String?;
+    if (subBusi == null || subBusi.isEmpty) {
+      throw Exception('参数错误');
+    }
+
+    final startTime = DateTime.now();
+    upLogger.d('开始上传文件，$startTime');
+
+    // final result = await compute(_handleUpload, {'filePath': tempFilePath, 'busi': busi, 'subBusi': subBusi});
+    final result = await _handleUpload(tempFilePath, busi, subBusi);
+
+    final endTime = DateTime.now();
+    upLogger.d('完成上传文件，$endTime');
+    upLogger.d('上传完成，耗时：${endTime.millisecondsSinceEpoch - startTime.millisecondsSinceEpoch} 毫秒');
+
+    result['startTimestamp'] = startTime.toString();
+    result['endTimestamp'] = endTime.toString();
+
+    return result;
+  }
+
+  static const _bxeBaseUrl = 'https://iotapp-dev.banxiaoer.com/iotapp';
+  static const _signatureNewUrl = '/api/v1/obs/multipart/signaturenew';
+  static const _signatureNextUrl = '/api/v1/obs/multipart/signaturenext';
+  static const _completeUrl = '/api/v1/obs/multipart/complete';
+
+  /// 在Isolate中执行
+  // static Future<Map<String, dynamic>> _handleUpload(Map<String, dynamic> fileParams) async {
+  //   String filePath = fileParams['filePath'] as String;
+  //   String busi = fileParams['busi'] as String;
+  //   String subBusi = fileParams['subBusi'] as String;
+  static Future<Map<String, dynamic>> _handleUpload(String filePath, String busi, String subBusi) async {
+    if (filePath.startsWith(Constant.localServerUrl)) {
+      filePath = filePath.replaceFirst(Constant.localServerUrl, '');
+    }
+
+    if (filePath.startsWith(Constant.localServerTemp)) {
+      filePath = filePath.replaceFirst(Constant.localServerTemp, '');
+    }
+
+    final bxeApiService = ApiService(baseUrl: _bxeBaseUrl);
+    // 由于服务端签名时未设置Content-Type，这里必须设置为空，否则会报签名错误
+    // 由于封装有默认值，所以不能不设置
+    final obsApiService = ApiService(defaultHeaders: {'Content-Type': '', 'Accept': ''});
+
+    String logicPrefix = _getLoginPrefix(busi, subBusi);
+
+    //并行上传分段
+    var startTime = DateTime.now();
+    upLogger.d("开始异步处理 $startTime");
+    final uploadResult =
+        await _uploadInParallel(bxeApiService, obsApiService, logicPrefix, filePath, maxConcurrency: 30);
+    var endTime = DateTime.now();
+    upLogger.d("完成异步处理 $endTime ，耗时 ${endTime.millisecondsSinceEpoch - startTime.millisecondsSinceEpoch} 毫秒");
+
+    // 上传结果
+    String objectKey = uploadResult['objectKey'] as String;
+    String bucket = uploadResult['bucket'] as String;
+    String uploadId = uploadResult['uploadId'] as String;
+    Map<int, String> tagsMap = uploadResult['tagsMap'] as Map<int, String>;
+
+    //请求合并文件
+    var startTime2 = DateTime.now();
+    upLogger.d("开始处理合并文件 $startTime2");
+    String location = await _merge(bxeApiService, objectKey, bucket, uploadId, tagsMap);
+    var endTime2 = DateTime.now();
+    upLogger.d("合并文件完成 $endTime2 ，耗时 ${endTime2.millisecondsSinceEpoch - startTime2.millisecondsSinceEpoch} 毫秒 ");
+
+    //关闭Dio
+    bxeApiService.close();
+    obsApiService.close();
+
+    return {'url': _addPreUrl(location)};
+  }
+
+  /// 并行上传
+  static Future<Map<String, dynamic>> _uploadInParallel(
+    ApiService bxeApiService,
+    ApiService obsApiService,
+    String logicPrefix,
+    String filePath, {
+    int maxConcurrency = 5,
+  }) async {
+    //判断文件
+    File file = File(filePath);
+    if (!file.existsSync()) {
+      throw Exception('文件不存在');
+    }
+    //暂时仅支持200M的文件上传
+    final fileSize = file.lengthSync();
+    if (fileSize > 1024 * 1024 * 200) {
+      throw Exception('上传的文件过大');
+    }
+
+    upLogger.d('文件大小：$fileSize');
+
+    //分段大小2M
+    final chunkSize = Constant.obsUploadChunkSize;
+    upLogger.d('分段大小：$chunkSize');
+
+    //分段总数
+    final totalChunks = (fileSize / chunkSize).ceil();
+    upLogger.d('分段总数：$totalChunks');
+
+    final randomAccessFile = file.openSync();
+
+    //bucket 存储桶名称 : bxe-files | bxe-pics | bxe-videos
+    String bucket;
+    if (await FileTypeUtil.isImage(file)) {
+      bucket = 'bxe-pics';
+    } else if (await FileTypeUtil.isVideo(file)) {
+      bucket = 'bxe-videos';
+    } else {
+      bucket = 'bxe-files';
+    }
+
+    //生成唯一文件名，
+    // String objectKey = 'd2/test/file.csv';
+    var uuid = Uuid();
+    String objectKey = '$logicPrefix/${uuid.v4()}${path.extension(file.path)}';
+    String uploadId = '';
+    Map<int, String> tagsMap = {};
+
+    final futures = <Future>[];
+    for (int i = 0; i < totalChunks; i++) {
+      upLogger.d('开始处理分段：$i');
+
+      // 控制并发数量
+      if (futures.length >= maxConcurrency) {
+        upLogger.d('超过最大并发数量，等待');
+        var resultList = await Future.wait(futures);
+        upLogger.d('等待完成');
+
+        for (var result in resultList) {
+          if (result is Map<String, dynamic>) {
+            tagsMap[result['idx'] as int] = result['etag'] as String;
+          }
+        }
+
+        futures.clear();
+      }
+
+      final start = i * chunkSize;
+      final actualChunkSize = (i + 1) * chunkSize > fileSize ? fileSize - start : chunkSize;
+      final chunk = Uint8List(actualChunkSize);
+
+      randomAccessFile.setPositionSync(start);
+      await randomAccessFile.readInto(chunk, 0, actualChunkSize);
+
+      final startTime = DateTime.now().millisecondsSinceEpoch;
+      String chunkSignUrl;
+      if (i == 0) {
+        final initResult = await _init(bxeApiService, objectKey, bucket);
+        uploadId = initResult['upload_id'] as String;
+        chunkSignUrl = initResult['signed_url'] as String;
+      } else {
+        final nextResult = await _next(bxeApiService, objectKey, bucket, uploadId, i + 1);
+        chunkSignUrl = nextResult['signed_url'] as String;
+      }
+      final endTime = DateTime.now().millisecondsSinceEpoch;
+      upLogger.d('分段$i，签名耗时：${endTime - startTime} 毫秒');
+
+      // await _uploadChunkWithRetry(obsApiService, chunkSignUrl, i, chunk, tagsMap);
+      // final future = _uploadChunkWithRetry(obsApiService, chunkSignUrl, i, chunk, tagsMap);
+      // final future = _uploadChunkWithRetry({'signUrl': chunkSignUrl, 'chunkIndex': i, 'chunk': chunk});
+      final future = compute(_uploadChunkWithRetry, {'signUrl': chunkSignUrl, 'chunkIndex': i, 'chunk': chunk});
+      futures.add(future);
+    }
+
+    // 等待剩余的上传完成
+    if (futures.isNotEmpty) {
+      var resultList = await Future.wait(futures);
+
+      for (var result in resultList) {
+        if (result is Map<String, dynamic>) {
+          tagsMap[result['idx'] as int] = result['etag'] as String;
+        }
+      }
+    }
+
+    randomAccessFile.closeSync();
+    return {'objectKey': objectKey, 'bucket': bucket, 'uploadId': uploadId, 'tagsMap': tagsMap};
+  }
+
+  /// 初始化，请求后端获取签名信息和上传任务ID
+  static Future<Map<String, dynamic>> _init(ApiService bxeApiService, String objectKey, String bucket) async {
+    var endpoint = '$_signatureNewUrl?objectKey=$objectKey&bucket=$bucket';
+    final resp = await bxeApiService.get(endpoint);
+    return resp.data;
+  }
+
+  /// 每次上传前，请求后端获取签名信息
+  static Future<Map<String, dynamic>> _next(
+    ApiService bxeApiService,
+    String objectKey,
+    String bucket,
+    String uploadId,
+    int partNum,
+  ) async {
+    var endpoint = '$_signatureNextUrl?objectKey=$objectKey&bucket=$bucket&uploadId=$uploadId&partNum=$partNum';
+    final resp = await bxeApiService.get(endpoint);
+    return resp.data;
+  }
+
+  /// 上传段，按照最大重试次数进行上传重试
+  // static Future<void> _uploadChunkWithRetry(
+  //   ApiService obsApiService,
+  //   String signUrl,
+  //   int chunkIndex,
+  //   Uint8List chunk,
+  //   Map<int, String> tagsMap, {
+  //   int maxRetries = 3,
+  // }) async {
+  static Future<Map<String, dynamic>> _uploadChunkWithRetry(Map<String, dynamic> uploadParams) async {
+    var signUrl = uploadParams['signUrl'] as String;
+    var chunk = uploadParams['chunk'] as Uint8List;
+    var chunkIndex = uploadParams['chunkIndex'] as int;
+    // var tagsMap = uploadParams['tagsMap'] as Map<int, String>;
+    var maxRetries = 30;
+
+    final start = DateTime.now();
+    upLogger.d('new Isolate--- 分段$chunkIndex，开始时间：$start');
+
+    for (int attempt = 0; attempt <= maxRetries; attempt++) {
+      upLogger.d('new Isolate--- 分段$chunkIndex，第 ${attempt + 1} 次，开始时间：${DateTime.now()}');
+      try {
+        final obsApiService = ApiService(defaultHeaders: {'Content-Type': '', 'Accept': ''});
+        final resp = await _uploadChunk(obsApiService, signUrl, chunk, chunkIndex);
+        if (resp.statusCode == 200) {
+          final etags = resp.headers['etag'] as List<String>;
+          // tagsMap[chunkIndex + 1] = etags[0];
+          final end = DateTime.now();
+          upLogger.d(
+              'new Isolate--- 分段$chunkIndex，完成时间: $end，上传段耗时：${end.millisecondsSinceEpoch - start.millisecondsSinceEpoch}毫秒');
+          return Future.value({'idx': chunkIndex + 1, 'etag': etags[0]}); // 上传成功
+        } else {
+          throw Exception('Chunk $chunkIndex upload failed: ${resp.statusCode}');
+        }
+      } catch (e) {
+        if (attempt == maxRetries) {
+          throw Exception('Chunk $chunkIndex upload failed after $maxRetries attempts: $e');
+        }
+        // 等待后重试
+        await Future.delayed(Duration(seconds: 2 * attempt));
+      }
+    }
+    throw Exception('上传失败');
+  }
+
+  /// 上传段
+  static Future<Response> _uploadChunk(
+      ApiService obsApiService, String signUrl, Uint8List chunk, int chunkIndex) async {
+    var url = signUrl.replaceFirst('AWSAccessKeyId=', 'AccessKeyId=').replaceFirst(':443', '');
+
+    try {
+      Response response = await obsApiService.put(url, chunk);
+      return response;
+    } catch (e) {
+      throw Exception('Chunk upload failed: $e');
+    }
+  }
+
+  /// 请求合并文件
+  static Future<String> _merge(
+    ApiService bxeApiService,
+    String objectKey,
+    String bucket,
+    String uploadId,
+    Map<int, String> tagsMap,
+  ) async {
+    final parts = [];
+    for (int i = 1; i <= tagsMap.length; i++) {
+      parts.add({'partNumber': i, 'etag': tagsMap[i]});
+    }
+
+    final response = await bxeApiService.post(_completeUrl, {
+      'objectKey': objectKey,
+      'bucket': bucket,
+      'uploadId': uploadId,
+      'parts': parts,
+    });
+
+    if (response.statusCode != 200) {
+      throw Exception('合并文件失败');
+    }
+
+    return response.data["location"];
+  }
+
+  static String _getLoginPrefix(String busi, String subBusi) {
+    var now = DateTime.now();
+    var year = now.year;
+    var month = now.month;
+    var day = now.day;
+
+    return 'd2/pridel/user/$year$month$day/bxe/${busi}_$subBusi';
+  }
+
+  static String _addPreUrl(String location) {
+    // /bxe-pics/d2/pridel/user/20251017/bxe/bxe_homework/f4ea233d-9e1b-4a3f-bc8f-b64e776f42a6.jpg
+    if (location.startsWith('/bxe-files')) {
+      return 'https://files-obs.banxiaoer.com${location.substring(10)}';
+    } else if (location.startsWith('/bxe-pics')) {
+      return 'https://pics-obs.banxiaoer.com${location.substring(9)}';
+    } else if (location.startsWith('/bxe-videos')) {
+      return 'https://videos-obs.banxiaoer.com${location.substring(11)}';
+    } else {
+      return location;
+    }
+  }
+}

lib/main.dart

@@ -8,7 +8,7 @@ import 'app.dart';
 void main() async {
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
   WidgetsFlutterBinding.ensureInitialized();
   await setupLocator();
   await setupLocator();
-  await registerMqtt();
+  // await registerMqtt();
   await initDatabase();
   await initDatabase();
 
 
   runApp(const App());
   runApp(const App());