0812

lib/services/voice_recognition_service.dart

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+import 'package:http/http.dart' as http;
+import 'dart:convert';
+import 'package:http_parser/http_parser.dart';
+
+class VoiceRecognitionService {
+  Future<String?> recognizeSpeech(List<int> audioBytes,
+      {String lang = 'cn'}) async {
+    try {
+      print('准备发送OPUS音频数据，大小: ${audioBytes.length} 字节');
+      final uri = Uri.parse('http://143.64.185.20:18606/voice');
+      print('发送到: $uri');
+
+      final request = http.MultipartRequest('POST', uri);
+      request.files.add(
+        http.MultipartFile.fromBytes(
+          'audio',
+          audioBytes,
+          filename: 'record.wav',
+          contentType: MediaType('audio', 'wav'),
+        ),
+      );
+      request.fields['lang'] = lang; // 根据参数设置语言
+
+      print('发送请求...');
+      final streamResponse = await request.send();
+      print('收到响应，状态码: ${streamResponse.statusCode}');
+
+      final response = await http.Response.fromStream(streamResponse);
+
+      if (response.statusCode == 200) {
+        print('响应内容: ${response.body}');
+        final text = _parseTextFromJson(response.body);
+        if (text != null) {
+          print('解析出文本: $text');
+          return text; // 返回识别的文本
+        } else {
+          print('解析文本失败');
+        }
+      } else {
+        print('请求失败，状态码: ${response.statusCode}，响应: ${response.body}');
+      }
+    } catch (e) {
+      print('发送录音到服务器时出错: $e');
+    }
+    return null;
+  }
+
+  // 移到类内部作为私有方法
+  String? _parseTextFromJson(String body) {
+    try {
+      final decoded = jsonDecode(body);
+      if (decoded.containsKey('text')) {
+        return decoded['text'] as String?;
+      }
+      return null;
+    } catch (e) {
+      print('JSON解析错误: $e, 原始数据: $body');
+      return null;
+    }
+  }
+}