Dart Pub软件包安装错误？

Question

Dart一直工作到更新了Editor，现在我对现有项目和新项目都遇到了错误。 我尝试完全重新安装Dart。 当我在Web-ui上为新项目运行pub install时收到以下消息：

--- Jun 11, 2013 10:25:11 PM Running pub install ... ---
Pub install failed, [255] Unhandled exception:
FileIOException: Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version' (OS Error: The system cannot find the file specified.

, errno = 2)
#0      _File.throwIfError (file_impl.dart:444:7)
#1      _File.openSync (file_impl.dart:310:17)
#2      _File.readAsBytesSync (file_impl.dart:363:26)
#3      _File.readAsStringSync (file_impl.dart:381:41)
#4      readTextFile (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/io.dart:71:68)
#5      _getVersion (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:24:29)
#6      version (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:17:30)
#7      main (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/bin/pub.dart:61:30)

没错，该目录中没有全新安装的“版本”文件。 我添加了该文件，并收到以下消息：

--- Jun 11, 2013 10:23:42 PM Running pub install ... ---

Pub install failed, [69] Resolving dependencies...

Failed NSS_Init call.

创建新项目时，我得到以下信息：

--- Jun 11, 2013 10:26:17 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/MyApp/build.dart
build.dart returned error code 255

Do not know how to load 'dart:uri''package:analyzer_experimental/src/generated/java_core.dart': Error: line 4 pos 1: library handler failed
import "dart:uri";
^
'package:analyzer_experimental/src/generated/ast.dart': Error: line 7 pos 1: library handler failed
import 'java_core.dart';
^
'package:web_ui/src/compiler.dart': Error: line 10 pos 1: library handler failed
import 'package:analyzer_experimental/src/generated/ast.dart' show Directive, UriBasedDirective;
^
'package:web_ui/dwc.dart': Error: line 12 pos 1: library handler failed
import 'src/compiler.dart';
^
'package:web_ui/component_build.dart': Error: line 25 pos 1: library handler failed
import 'dwc.dart' as dwc;
^
'file:///C:/Users/Phloxicon/Dropbox/dart/MyApp/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:18 PM Running pub install ... ---
Pub install failed, [255] Unhandled exception:
FileIOException: Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version' (OS Error: The system cannot find the file specified.

, errno = 2)
#0      _File.throwIfError (file_impl.dart:444:7)
#1      _File.openSync (file_impl.dart:310:17)
#2      _File.readAsBytesSync (file_impl.dart:363:26)
#3      _File.readAsStringSync (file_impl.dart:381:41)
#4      readTextFile (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/io.dart:71:68)
#5      _getVersion (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:24:29)
#6      version (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:17:30)
#7      main (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/bin/pub.dart:61:30)


--- Jun 11, 2013 10:26:18 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/Test02/build.dart
build.dart returned error code 255

Unable to open file: C:/Users/Phloxicon/Dropbox/dart/Test02/packages/web_ui/component_build.dart'file:///C:/Users/Phloxicon/Dropbox/dart/Test02/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:18 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/quiz_generator/build.dart
build.dart returned error code 255

Do not know how to load 'dart:uri''package:analyzer_experimental/src/generated/java_core.dart': Error: line 4 pos 1: library handler failed
import "dart:uri";
^
'package:analyzer_experimental/src/generated/ast.dart': Error: line 7 pos 1: library handler failed
import 'java_core.dart';
^
'package:web_ui/src/compiler.dart': Error: line 10 pos 1: library handler failed
import 'package:analyzer_experimental/src/generated/ast.dart' show Directive, UriBasedDirective;
^
'package:web_ui/dwc.dart': Error: line 12 pos 1: library handler failed
import 'src/compiler.dart';
^
'package:web_ui/component_build.dart': Error: line 25 pos 1: library handler failed
import 'dwc.dart' as dwc;
^
'file:///C:/Users/Phloxicon/Dropbox/dart/quiz_generator/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:19 PM Running pub install ... ---
Pub install failed, [255] Unhandled exception:
FileIOException: Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version' (OS Error: The system cannot find the file specified.

, errno = 2)
#0      _File.throwIfError (file_impl.dart:444:7)
#1      _File.openSync (file_impl.dart:310:17)
#2      _File.readAsBytesSync (file_impl.dart:363:26)
#3      _File.readAsStringSync (file_impl.dart:381:41)
#4      readTextFile (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/io.dart:71:68)
#5      _getVersion (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:24:29)
#6      version (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:17:30)
#7      main (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/bin/pub.dart:61:30)


--- Jun 11, 2013 10:26:19 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/sdgdsfg/build.dart
build.dart returned error code 255

Unable to open file: C:/Users/Phloxicon/Dropbox/dart/sdgdsfg/packages/web_ui/component_build.dart'file:///C:/Users/Phloxicon/Dropbox/dart/sdgdsfg/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:19 PM Running pub install ... ---
Pub install failed, [255] Unhandled exception:
FileIOException: Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version' (OS Error: The system cannot find the file specified.

, errno = 2)
#0      _File.throwIfError (file_impl.dart:444:7)
#1      _File.openSync (file_impl.dart:310:17)
#2      _File.readAsBytesSync (file_impl.dart:363:26)
#3      _File.readAsStringSync (file_impl.dart:381:41)
#4      readTextFile (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/io.dart:71:68)
#5      _getVersion (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:24:29)
#6      version (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:17:30)
#7      main (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/bin/pub.dart:61:30)


--- Jun 11, 2013 10:26:19 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/srtgdsfg/build.dart
build.dart returned error code 255

Unable to open file: C:/Users/Phloxicon/Dropbox/dart/srtgdsfg/packages/web_ui/component_build.dart'file:///C:/Users/Phloxicon/Dropbox/dart/srtgdsfg/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:19 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/test1/build.dart
build.dart returned error code 255

Do not know how to load 'dart:uri''package:analyzer_experimental/src/generated/java_core.dart': Error: line 4 pos 1: library handler failed
import "dart:uri";
^
'package:analyzer_experimental/src/generated/ast.dart': Error: line 7 pos 1: library handler failed
import 'java_core.dart';
^
'package:web_ui/src/compiler.dart': Error: line 10 pos 1: library handler failed
import 'package:analyzer_experimental/src/generated/ast.dart' show Directive, UriBasedDirective;
^
'package:web_ui/dwc.dart': Error: line 12 pos 1: library handler failed
import 'src/compiler.dart';
^
'package:web_ui/component_build.dart': Error: line 26 pos 1: library handler failed
import 'dwc.dart' as dwc;
^
'file:///C:/Users/Phloxicon/Dropbox/dart/test1/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:20 PM Running pub install ... ---
Pub install failed, [255] Unhandled exception:
FileIOException: Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version' (OS Error: The system cannot find the file specified.

, errno = 2)
#0      _File.throwIfError (file_impl.dart:444:7)
#1      _File.openSync (file_impl.dart:310:17)
#2      _File.readAsBytesSync (file_impl.dart:363:26)
#3      _File.readAsStringSync (file_impl.dart:381:41)
#4      readTextFile (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/io.dart:71:68)
#5      _getVersion (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:24:29)
#6      version (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:17:30)
#7      main (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/bin/pub.dart:61:30)


--- Jun 11, 2013 10:26:20 PM build.dart --machine --full ---
file:/C:/Users/Phloxicon/Dropbox/dart/testest/build.dart
build.dart returned error code 255

Unable to open file: C:/Users/Phloxicon/Dropbox/dart/testest/packages/web_ui/component_build.dart'file:///C:/Users/Phloxicon/Dropbox/dart/testest/build.dart': Error: line 2 pos 1: library handler failed
import 'package:web_ui/component_build.dart';
^


--- Jun 11, 2013 10:26:20 PM Running pub install ... ---
Pub install failed, [255] Unhandled exception:
FileIOException: Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version' (OS Error: The system cannot find the file specified.

, errno = 2)
#0      _File.throwIfError (file_impl.dart:444:7)
#1      _File.openSync (file_impl.dart:310:17)
#2      _File.readAsBytesSync (file_impl.dart:363:26)
#3      _File.readAsStringSync (file_impl.dart:381:41)
#4      readTextFile (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/io.dart:71:68)
#5      _getVersion (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:24:29)
#6      version (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/lib/src/sdk.dart:17:30)
#7      main (file:///e:/b/build/slave/dart-editor-win-trunk/build/dart/sdk/lib/_internal/pub/bin/pub.dart:61:30)

有任何想法吗？

Answer 1

Cannot open file 'C:\Users\Phloxicon\Documents\dart\dart-sdk\bin\version'

看来您的Dart安装已损坏。 安装Dart SDK时，该文件肯定应该存在，而没有它，pub无法工作。

您是在自己构建SDK，还是只是下载一个预先构建的SDK？

Answer 2

尝试pub update而不是pub install以便在可能的情况下更新缓存的软件包。

然后从同一“工具”菜单中使用“ Reanalyze Sources ”。 在运行“ Reanalyze Sources之前，请确保清除所有日志，以确保它进行了干净的构建。

如果这样不能使您完全干净，请删除在项目树中看到的所有packages目录以及所有可能挂在out目录以及pubspec.lock文件。 然后运行pub install 。

通常这会使我恢复到干净的状态。