aes_decrypt.dart错误:未找到：“dart:ffi”导入'dart:ffi‘

Question

在添加syncfusion_flutter_datagrid、printing和pdf包后，在构建web时会出现以下错误：

我运行过flutter clean && flutter pub get，但没有帮助。我还尝试将ffi添加到pubspec.yml中。

Compiling lib/main.dart for the Web...                             16.0s
Target dart2js failed: Exception: Warning: The 'dart2js' entrypoint script is deprecated, please use 'dart compile js' instead.
/root/.pub-cache/hosted/pub.dartlang.org/archive-3.3.3/lib/src/util/aes_decrypt.dart:1:8:
Error: Not found: 'dart:ffi'
import 'dart:ffi';
       ^
/root/.pub-cache/hosted/pub.dartlang.org/syncfusion_flutter_datagrid-20.3.56/lib/src/datagrid_widget/widgets/cell_widget.dart:695:19:
Warning: Operand of null-aware operation '!' has type 'OverlayState' which excludes null.
 - 'OverlayState' is from 'package:flutter/src/widgets/overlay.dart' ('/usr/local/flutter/packages/flutter/lib/src/widgets/overlay.dart').
          Overlay.of(context)!.context.findRenderObject()! as RenderBox;
                  ^
Error: Compilation failed.

Exception: Failed to compile application for the Web.
The command '/bin/sh -c flutter build web' returned a non-zero code: 1

mark@mark-desktop:~/dev/example/cmd/client$ flutter doctor
Doctor summary (to see all details, run flutter doctor -v):
[✓] Flutter (Channel stable, 3.3.7, on Ubuntu 22.04.1 LTS 5.15.0-52-generic, locale en_AU.UTF-8)
[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
[✓] Chrome - develop for the web
[✓] Linux toolchain - develop for Linux desktop
[✓] Android Studio (version 2021.3)
[✓] VS Code
[✓] Connected device (2 available)
[✓] HTTP Host Availability

• No issues found!

编辑:我删除了syncfusion_data_grid，但是继续得到相同的错误。

Answer 1

好吧..。如果没有项目中使用的每个包的具体版本，就很难指出确切的原因。然而，这似乎是一个常见的问题，每当一个子依赖被配置到一个旧的版本，造成麻烦。

遵循此伟大的职位，您似乎需要升级您的包以避免此错误。请遵循以下步骤：

• 运行flutter pub upgrade
• 如果错误没有解决-运行flutter pub upgrade --major-versions
• 如果尚未解决，请删除所有依赖项(加上-注释所有相关代码)，并验证项目是否成功编译。

提示您应该验证您是否能够正确访问您的文件系统，以避免权限不足导致的读/写问题。