分级安装提供不同的分级版本

Question

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，它显示了Gradle 7.0。是否有任何东西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。不知道该采取什么正确的步骤。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，它生成并显示文件夹中的> .gradle.caches>7.0，如果它指向Gradle 7.0。我已经尝试删除这也，但得到自动生成。

Answer 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，而不是在Gradle安装的bin文件夹中运行。

检查PATH环境变量的值，看看其他Gradle安装可能已经是其中的一部分。

echo $PATH

我相当肯定，您会发现gradle 7.0的Gradle命令已经在路上了。您可以编辑路径或提供调用Gradle 5.6.4的完整路径，但最好的方法是使用项目中的Gradle包装器强制Gradle版本达到对项目有用的效果。

请注意，“gradlew”不是Gradle的一部分，它是为一些基于Gradle的项目添加的包装脚本。