maven - 如何修复 maven 错误 JAVA_HOME 环境变量未正确定义？

Question

问题:

当我通过 Inno setup 批处理执行时，我收到 Maven 错误“JAVA_HOME 环境变量未正确定义”。但是，我能够在 Inno Setup 之外成功运行。(例如命令行、批处理文件、Vbs)。我对确定问题一无所知。

Inno Setup 调用提示:

C:\>mvn -version
The JAVA_HOME environment variable is not defined correctly
This environment variable is needed to run this program
NB: JAVA_HOME should point to a JDK not a JRE

常规命令提示符:

C:\>mvn -version
C:\
Apache Maven 3.5.0 (ff8f5e7444045639af65f6095c62210b5713f426; 2017-04-04T01:09:06+05:30)
Maven home: C:\Program Files\apache-maven-3.5.0\bin\..
Java version: 1.8.0_131, vendor: Oracle Corporation
Java home: C:\Program Files\Java\jdk1.8.0_131\jre
Default locale: en_US, platform encoding: Cp1252
OS name: "windows 7", version: "6.1", arch: "amd64", family: "windows"

来自 InnoSetup 的 Maven 命令:

[Files]
Source: "C:\@Setup\MavenInstaller.bat"; DestDir: "{tmp}"; Flags: ignoreversion
[Run]
Filename: "{cmd}"; Parameters: "/C ""{tmp}\MavenInstaller.bat"""

来自批处理文件的 Maven 命令:

mvn archetype:generate -DgroupId=com.mycompany.mycomponent-DartifactId=%APPLICATION_NAME% -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

设置JAVA_HOME

检查是否安装了 Java 1.8。如果没有安装，同样安装，设置JAVA HOME如下。

SETX JAVA_HOME "C:\Program Files\Java\jdk1.8.0_131"
SETX -m JAVA_HOME "C:\Program Files\Java\jdk1.8.0_131"
REG ADD "HKLM\SYSTEM\CurrentControlSet\Control\Session Manager\Environment" /v Path /t REG_SZ /d "%path%;C:\Program Files\Java\jdk1.8.0_131\bin;" /f

非常感谢。

Answer 1

SETX命令不会修改当前环境。

如果您运行以下批处理文件:

setx AAA aaa
echo AAA=%AAA%

它会打印

AAA=

所以你的批处理文件是错误的。您必须使用 set :

set AAA=aaa

见 What is the difference between SETX and SET in environment variables in Windows .