Flutter 构建失败：未找到：'dart:html' import 'dart:html' http-0.12.2答案

【问题标题】：Flutter Build failure: Not found: 'dart:html' import 'dart:html' http-0.12.2Flutter 构建失败：未找到：'dart:html' import 'dart:html' http-0.12.2
【发布时间】：2020-11-24 04:34:02
【问题描述】：

不知道如何进入编译错误：

Compiler message:                                                       
../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart:6:8: Error: Not found: 'dart:html'
import 'dart:html';                                                     
       ^                                                                
../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart:34:18: Error: 'HttpRequest' isn't a type.
  final _xhrs = <HttpRequest>{};                                        
                 ^^^^^^^^^^^                                            
../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart:58:34: Error: 'Blob' isn't a type.
      var blob = xhr.response as Blob ?? Blob([]);                      
                                 ^^^^                                   
../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart:46:15: Error: The method 'HttpRequest' isn't defined for the class 'BrowserClient'.
 - 'BrowserClient' is from 'package:http/src/browser_client.dart' ('../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart').
Try correcting the name to the name of an existing method, or defining a method named 'HttpRequest'.
    var xhr = HttpRequest();                                            
              ^^^^^^^^^^^                                               
../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart:58:42: Error: The method 'Blob' isn't defined for the class 'BrowserClient'.
 - 'BrowserClient' is from 'package:http/src/browser_client.dart' ('../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart').
Try correcting the name to the name of an existing method, or defining a method named 'Blob'.
      var blob = xhr.response as Blob ?? Blob([]);                      
                                         ^^^^                           
../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart:59:20: Error: The method 'FileReader' isn't defined for the class 'BrowserClient'.
 - 'BrowserClient' is from 'package:http/src/browser_client.dart' ('../../development/flutter/.pub-cache/hosted/pub.dartlang.org/http-0.12.2/lib/src/browser_client.dart').
Try correcting the name to the name of an existing method, or defining a method named 'FileReader'.
      var reader = FileReader();                                        
                   ^^^^^^^^^^

【问题讨论】：

标签： java android flutter flutter-dependencies

【解决方案1】：

对于遇到此问题的任何人，当您导入一些属于 web 的包时，就会发生这种情况。就我而言，我导入了这个，

import 'package:dio/browser_imp.dart';

因此发生了构建失败。只需删除导入即可。

【讨论】：

【解决方案2】：

尝试清理包缓存。

pub cache repair

和

flutter clean

【讨论】：

您好 Anirudh，我执行了这两个命令，但没有运气。另外，我还有另一个颤振项目，我在其中使用 http: 0.12.1 并且我没有看到任何错误。更多线索说明为什么这个特定项目会收到错误，即太缺少 dart 文件。
导入错误文件是我的错误。删除了 browser_client.dart 应该没有被导入。