Error: The method ‘DioHttpHeaders.add‘ has fewer named arguments than those of overridden method

淡淡的烟草味﹌ 2022-12-21 06:09 122阅读 0赞

很久没更新dio了，编译时出现以下错误

../../../dev/flutter/.pub-cache/hosted/pub.flutter-io.cn/dio-2.2.2/lib/src/dio_http_headers.dart:55:8: Error: The method 'DioHttpHeaders.add' has fewer named arguments than those of overridden method 'HttpHeaders.add'.
      void add(String name, value) {                                        
           ^                                                                
    org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:698:8: Context: This is the overridden method ('add').
      void add(String name, Object value,                                   
           ^                                                                
    ../../../dev/flutter/.pub-cache/hosted/pub.flutter-io.cn/dio-2.2.2/lib/src/dio_http_headers.dart:70:8: Error: The method 'DioHttpHeaders.set' has fewer named arguments than those of overridden method 'HttpHeaders.set'.
      void set(String name, Object value) {                                 
           ^                                                                
    org-dartlang-sdk:///third_party/dart/sdk/lib/_http/http.dart:707:8: Context: This is the overridden method ('set').
      void set(String name, Object value,                                   
           ^                                                                
                                                                            
                                                                            
    FAILURE: Build failed with an exception.

显示的错误是dio有问题，当前用的版本是2.1.12。  
去dio的官网发现是版本问题，更新到最新的3.0重新编译即可，同时注意代码兼容性，从2.0升级到3.0很多api有了重大变化了，[从2.0升级到3.0指南][2.0_3.0]。

# dio: ^2.1.12
      dio: ^3.0.10

[参考链接][Link 1]

[2.0_3.0]: https://github.com/flutterchina/dio/blob/master/migration_to_3.0.md
[Link 1]: https://github.com/flutterchina/dio/issues/780