在 Java 中访问 shell 环境变量

Access shell environment variables in Java(在 Java 中访问 shell 环境变量)

问题描述

有谁知道如何在 Java 中访问标准 shell 环境的环境变量?我正在使用 ProcessBuilder 类，我必须指定在我正在运行的 shell 脚本中使用的特定环境变量，这些变量存在于标准 shell 环境中.

Does anyone know how to access the environment variables of the standard shell environment in Java? I am using the ProcessBuilder class and I have to specify specific environment variables used in a shell script I am running, these variables exist in the standard shell environment.

无法访问 ProcessBuilder 环境.

Accessing ProcessBuilder environment does not work.

推荐答案

您可以通过System.getenv()获取程序创建时存在的环境变量:

You can get at the environment variables that existed when your program was created through System.getenv():

http://download.oracle.com/javase/tutorial/基本/环境/env.html

当 Java 应用程序使用 ProcessBuilder 对象创建新进程时，传递给新进程的默认环境变量集与提供给应用程序的虚拟机进程的环境变量集相同.应用程序可以使用 ProcessBuilder.environment 更改此设置.

When a Java application uses a ProcessBuilder object to create a new process, the default set of environment variables passed to the new process is the same set provided to the application's virtual machine process. The application can change this set using ProcessBuilder.environment.

看起来您的子进程应该会自动获取您的环境.

It looks like your child process should get your environment automatically.

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