增加请求头

ln_jq_app/lib/common/token_interceptor.dart

@@ -1,3 +1,5 @@
+import 'dart:io';
+
 import 'package:dio/dio.dart';
 import 'package:ln_jq_app/storage_service.dart';
 
@@ -5,9 +7,10 @@ import 'package:ln_jq_app/storage_service.dart';
 class TokenInterceptor extends Interceptor {
   // 定义您想要使用的 Token Key
   final String tokenKey;
+  final String sourceKey;
 
   // 构造函数，允许外部传入自定义的 Key，默认为 'Authorization'
-  TokenInterceptor({this.tokenKey = 'Authorization'});
+  TokenInterceptor({this.tokenKey = 'Authorization', this.sourceKey = 'source'});
 
   @override
   void onRequest(RequestOptions options, RequestInterceptorHandler handler) {
@@ -23,6 +26,18 @@ class TokenInterceptor extends Interceptor {
       }
     }
 
+    String platformSource;
+    if (Platform.isAndroid) {
+      platformSource = 'Android';
+    } else if (Platform.isIOS) {
+      platformSource = 'iOS';
+    } else {
+      platformSource = '';
+    }
+    if (!options.headers.containsKey(sourceKey)) {
+      options.headers[sourceKey] = platformSource;
+    }
+
     // 调用 handler.next(options) 以继续执行请求
     // 这一步至关重要，否则请求会被中断
     super.onRequest(options, handler);