Gradle 安装给出了不同的 gradle 版本答案

【问题标题】：Gradle installation gives different gradle versionGradle 安装给出了不同的 gradle 版本
【发布时间】：2021-09-02 03:46:12
【问题描述】：

作为一个新用户，我试图在我的 Mac 上安装 gradle-5.6.4，但是当我检查 gradle 版本时，它显示 Gradle 7.0。有什么可以切换或更正版本控制到 gradle。

machine1:~ user$ cd /Users/user/Downloads/gradle-5.6.4/bin 
machine1:bin user$ gradle

Welcome to Gradle 7.0!

Here are the highlights of this release:
 - File system watching enabled by default
 - Support for running with and building Java 16 projects
 - Dependency catalog feature preview

For more details see https://docs.gradle.org/7.0/release-notes.html
Starting a Gradle Daemon (subsequent builds will be faster)
> Task :help
Welcome to Gradle 7.0.
To run a build, run gradle <task> ...
To see a list of available tasks, run gradle tasks
To see a list of command-line options, run gradle --help
To see more detail about a task, run gradle help --task <task>
For troubleshooting, visit https://help.gradle.org
BUILD SUCCESSFUL in 6s
1 actionable task: 1 executed

machine1:bin user$ 
machine1:bin user$ gradle wrapper --gradle-version 5.6.4
Starting a Gradle Daemon, 1 incompatible and 1 stopped Daemons could not be reused, use --status for details
> Task :wrapper FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Some problems were found with the configuration of task ':wrapper' (type 'Wrapper').
  - Type 'Wrapper' property 'jarFile' is not writable because '/Users/user/Downloads/gradle-5.6.4/bin/gradle/wrapper/gradle-wrapper.jar' ancestor '/Users/user/Downloads/gradle-5.6.4/bin/gradle' is not a directory.
    
    Reason: Cannot write a file to a location pointing at a directory.
    
    Possible solution: Configure 'jarFile' to point to a file, not a directory.
    
    Please refer to https://docs.gradle.org/7.0/userguide/validation_problems.html#cannot_write_output for more details about this problem.
  - Type 'Wrapper' property 'propertiesFile' is not writable because '/Users/user/Downloads/gradle-5.6.4/bin/gradle/wrapper/gradle-wrapper.properties' ancestor '/Users/user/Downloads/gradle-5.6.4/bin/gradle' is not a directory.
    
    Reason: Cannot write a file to a location pointing at a directory. 
    Possible solution: Configure 'propertiesFile' to point to a file, not a directory.
    Please refer to https://docs.gradle.org/7.0/userguide/validation_problems.html#cannot_write_output for more details about this problem.
* 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 5s
1 actionable task: 1 executed
machine1:bin user$ 
machine1:bin user$ 
machine1:bin user$ ./gradlew build
-bash: ./gradlew: No such file or directory
machine1:bin user$ pwd
/Users/user/Downloads/gradle-5.6.4/bin
machine1:bin user$ ls
gradle      gradle.bat  settings.gradle

不确定 Gradle 7 是否被意外安装并覆盖到 gradle 5.6.4。不确定要遵循的正确步骤是什么。在我的 .bash_profile 中，我添加了以下内容：

export GRADLE_HOME=/Users/user/Downloads/gradle-5.6.4
export PATH=$PATH:$GRADLE_HOME/bin

还有一个 .gradle 文件夹，它会生成并在文件夹中显示 > .gradle.caches>7.0，如果它指向 Gradle 7.0。我也尝试将其删除，但会自动生成。

【问题讨论】：

您将其添加到 PATH 环境变量的末尾，因此将在最后找到它。 PATH 中是否已经有另一个 Gradle 文件夹？

标签： java spring unix gradle

【解决方案1】：

运行这些命令时，您不在项目目录中。

从项目文件夹中运行 gradle 命令，而不是 Gradle 安装的 bin 文件夹。

检查 PATH 环境变量的值以查看其他 Gradle 安装可能已经包含在其中。

echo $PATH

我相当肯定你会发现 Gradle 7.0 的 gradle 命令已经在路径上。您可以编辑 PATH 或提供调用 Gradle 5.6.4 的完整路径，但最好的办法是在您的项目中使用 Gradle 包装器，将 Gradle 版本强制为您知道适合您的项目的版本。

请注意，“gradlew”不是 Gradle 的一部分，它是添加到某些基于 Gradle 的单个项目的包装脚本。

【讨论】：