我遇到这个错误已经有一段时间了，但我没有运气解决它。我使用的是 Flutter 版本 2.2.1，每当我尝试运行我的项目时，我都会收到以下错误：
[Fatal Error] auto-parent-3.pom:2:1: Content is not allowed in prolog.
[Fatal Error] google-1.pom:2:1: Content is not allowed in prolog.
[Fatal Error] google-1.pom:2:1: Content is not allowed in prolog.
FAILURE: Build failed with an exception.
* What went wrong:
A problem occurred configuring project ':path_provider'.
> Could not resolve all artifacts for configuration ':path_provider:classpath'.
> Could not resolve com.google.auto.value:auto-value:1.5.2.
Required by:
project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:bundletool:0.6.0
> Could not resolve com.google.auto.value:auto-value:1.5.2.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/auto/value/auto-value/1.5.2/auto-value-1.5.2.pom
> Could not resolve com.google.auto:auto-parent:3.
> Could not resolve com.google.auto:auto-parent:3.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/auto/auto-parent/3/auto-parent-3.pom
> Content is not allowed in prolog.
> Could not resolve com.google.protobuf:protobuf-java:3.4.0.
Required by:
project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:bundletool:0.6.0
project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:builder:3.3.0 > com.android.tools:sdk-common:26.3.0
project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:builder:3.3.0 > com.android.tools.analytics-library:protos:26.3.0 project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:builder:3.3.0 > com.android.tools.analytics-library:tracker:26.3.0
project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:bundletool:0.6.0 > com.android.tools.build:aapt2-proto:0.3.1
> Could not resolve com.google.protobuf:protobuf-java:3.4.0.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java/3.4.0/protobuf-java-3.4.0.pom
> Could not resolve com.google.protobuf:protobuf-parent:3.4.0.
> Could not resolve com.google.protobuf:protobuf-parent:3.4.0.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-parent/3.4.0/protobuf-parent-3.4.0.pom
> Could not resolve com.google:google:1.
> Could not resolve com.google:google:1.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/google/1/google-1.pom
> Content is not allowed in prolog.
> Could not resolve com.google.protobuf:protobuf-java-util:3.4.0.
Required by:
project :path_provider > com.android.tools.build:gradle:3.3.0 > com.android.tools.build:bundletool:0.6.0
> Could not resolve com.google.protobuf:protobuf-java-util:3.4.0.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-java-util/3.4.0/protobuf-java-util-3.4.0.pom
> Could not resolve com.google.protobuf:protobuf-parent:3.4.0.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/protobuf/protobuf-parent/3.4.0/protobuf-parent-3.4.0.pom
> Could not resolve com.google:google:1.
> Could not resolve com.google:google:1.
> Could not parse POM https://repo.maven.apache.org/maven2/com/google/google/1/google-1.pom
> Content is not allowed in prolog.
> Could not get unknown property 'android' for project ':path_provider' of type org.gradle.api.Project.
* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.
* Get more help at https://help.gradle.org
BUILD FAILED in 3m 21s
Running Gradle task 'assembleDebug'...
Running Gradle task 'assembleDebug'... Done 218.9s
Exception: Gradle task assembleDebug failed with exit code 1
我无法弄清楚为什么会发生此错误。
这是我运行 flutter doctor -v 时的输出：
[√] Flutter (Channel stable, 2.2.1, on Microsoft Windows [Version 10.0.19042.1052], locale en-US)
• Flutter version 2.2.1 at C:\src\flutter
• Framework revision 02c026b03c (3 weeks ago), 2021-05-27 12:24:44 -0700
• Engine revision 0fdb562ac8
• Dart version 2.13.1
[√] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
• Android SDK at C:\Users\Abhinav\AppData\Local\Android\sdk
• Platform android-30, build-tools 30.0.3
• Java binary at: C:\Program Files\Android\Android Studio\jre\bin\java
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
• All Android licenses accepted.
[√] Chrome - develop for the web
• Chrome at C:\Program Files\Google\Chrome\Application\chrome.exe
[!] Visual Studio - develop for Windows (Visual Studio Community 2019 16.9.4)
• Visual Studio at C:\Program Files (x86)\Microsoft Visual Studio\2019\Community
• Visual Studio Community 2019 version 16.9.31205.134
X Visual Studio is missing necessary components. Please re-run the Visual Studio installer for the "Desktop development with C++" workload, and include these
components:
MSVC v142 - VS 2019 C++ x64/x86 build tools
- If there are multiple build tool versions available, install the latest
C++ CMake tools for Windows
Windows 10 SDK
[√] Android Studio (version 4.1.0)
• Android Studio at C:\Program Files\Android\Android Studio
• Flutter plugin can be installed from:
https://plugins.jetbrains.com/plugin/9212-flutter
• Dart plugin can be installed from:
https://plugins.jetbrains.com/plugin/6351-dart
• Java version OpenJDK Runtime Environment (build 11.0.8+10-b944.6842174)
[√] VS Code (version 1.57.0)
• VS Code at C:\Users\Abhinav\AppData\Local\Programs\Microsoft VS Code
• Flutter extension version 3.23.0
[√] Connected device (4 available)
• Redmi Note 8 Pro (mobile) • 8livzdlvnnsoy5qw • android-arm64 • Android 10 (API 29)
• Windows (desktop) • windows • windows-x64 • Microsoft Windows [Version 10.0.19042.1052]
• Chrome (web) • chrome • web-javascript • Google Chrome 91.0.4472.101
• Edge (web) • edge • web-javascript • Microsoft Edge 90.0.818.62
! Doctor found issues in 1 category.
这是我的 pubspec.yaml 文件：
name: new_registreation1
description: A new Flutter project.
# The following line prevents the package from being accidentally published to
# pub.dev using `pub publish`. This is preferred for private packages.
publish_to: "none" # Remove this line if you wish to publish to pub.dev
# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1
environment:
sdk: ">=2.11.0 <3.0.0"
dependencies:
pinput: ^1.2.0
flutter_swiper: ^1.1.6
syncfusion_flutter_sliders: ^19.1.67-beta
flutter:
sdk: flutter
# The following adds the Cupertino Icons font to your application.
# Use with the CupertinoIcons class for iOS style icons.
cupertino_icons: ^1.0.2
google_fonts: ^2.0.0-nullsafety.0
flutter_svg: ^0.22.0
flutter_signin_button: ^2.0.0
pin_code_fields: ^7.2.0
percent_indicator: ^3.0.1
flutter_range_slider: ^1.5.0
palette_generator: ^0.3.0
dev_dependencies:
flutter_test:
sdk: flutter
# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec
# The following section is specific to Flutter.
flutter:
# The following line ensures that the Material Icons font is
# included with your application, so that you can use the icons in
# the material Icons class.
uses-material-design: true
# To add assets to your application, add an assets section, like this:
assets:
- assets/image1.svg
- assets/image2.svg
- assets/image3.svg
- assets/image4.svg
- assets/image5.svg
- assets/image6.svg
- assets/image7.svg
- assets/image8.svg
- assets/image9.svg
- assets/image10.svg
- assets/image11.svg
- assets/image12.svg
- assets/image13.svg
- assets/image14.svg
- assets/back.png
- assets/ChatsCircle.png
- assets/next.png
- assets/heart.png
- assets/profileIcon.png
- assets/refresh.png
- assets/Spotify Icon.png
- assets/google_icon.svg
# An image asset can refer to one or more resolution-specific "variants", see
# https://flutter.dev/assets-and-images/#resolution-aware.
# For details regarding adding assets from package dependencies, see
# https://flutter.dev/assets-and-images/#from-packages
# To add custom fonts to your application, add a fonts section here,
# in this "flutter" section. Each entry in this list should have a
# "family" key with the font family name, and a "fonts" key with a
# list giving the asset and other descriptors for the font. For
# example:
# fonts:
# - family: Schyler
# fonts:
# - asset: fonts/Schyler-Regular.ttf
# - asset: fonts/Schyler-Italic.ttf
# style: italic
# - family: Trajan Pro
# fonts:
# - asset: fonts/TrajanPro.ttf
# - asset: fonts/TrajanPro_Bold.ttf
# weight: 700
#
# For details regarding fonts from package dependencies,
# see https://flutter.dev/custom-fonts/#from-packages
如果需要，我会附加更多输出。