Eclipse 中的环境变量 [英] Environment variables in Eclipse

问题描述

我能够从命令提示符运行示例 hadoop 程序，并尝试从 Eclipse 运行相同的程序，以便我可以调试它并更好地理解它.

I am able to run a sample hadoop program from the command prompt and am trying to run the same program from Eclipse, so that I can debug it and understand it better.

对于命令行程序，在.bashrc中设置了一些环境变量，并且和System.getenv().get("HADOOP_MAPRED_HOME")一样被读取> 在 hadoop 程序中.但是，当我使用 System.getenv().get("HADOOP_MAPRED_HOME") 运行 java 程序时，从 Eclipse 中我得到了空值.

For the command line program, some environment variables are set in the .bashrc and the same are being read as System.getenv().get("HADOOP_MAPRED_HOME") in the hadoop program. But, when I am running a java program with System.getenv().get("HADOOP_MAPRED_HOME"), from Eclipse I am getting null.

我尝试在 Eclipse 的运行时配置中将 -DHADOOP_MAPRED_HOME=test 传递给 VM 参数，但在独立程序中仍然为空.如何使环境变量在 Eclipse 中可见?当我在 Eclipse 中遍历 System.getenv() 时，我看到很多变量，如 DISPLAY、USER、HOME> 和其他.他们在哪里设置?我使用的是 Ubuntu 11.04.

I tried passing -DHADOOP_MAPRED_HOME=test to VM parameters in the runtime configurations from Eclipse, but still getting null in the standalone program. How to make the environment variables visible within Eclipse? When I iterate through System.getenv() in Eclipse, I see lot of variables like DISPLAY, USER, HOME and others. Where are they set? I am using Ubuntu 11.04.

推荐答案

.bashrc 文件用于设置交互式登录 shell 使用的变量.如果您希望在 Eclipse 中使用这些环境变量，您需要将它们放在/etc/environment 中.

The .bashrc file is used for setting variables used by interactive login shells. If you want those environment variables available in Eclipse you need to put them in /etc/environment.

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