eclipse 在eclipse中设置引用其他环境变量的环境变量
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Setting environment variables in eclipse that references other environment variables
提问by fidesachates
I have Eclipse Helios with a java program set up. I'm attempting to create two environment variables
我有一个带有 Java 程序的 Eclipse Helios。我正在尝试创建两个环境变量
ReportingManagerHome=C:\rp
ReportingManagerConfig=${ReportingManagerHome}\config
ReportingManagerHome=C:\rp
ReportingManagerConfig=${ReportingManagerHome}\config
I then run my program with
然后我运行我的程序
System.out.println(System.getenv("ReportingManagerConfig"));
System.out.println(System.getenv("ReportingManagerConfig"));
Eclipse doesn't even call the java compiler. It throws up a pop up window with the error that environment variable ReportingManagerHome is not defined. I understand that since the java compiler has yet to be called, technically Eclipse is correct.
Eclipse 甚至不调用 java 编译器。它会弹出一个弹出窗口，提示未定义环境变量 ReportingManagerHome 的错误。我知道由于尚未调用 java 编译器，因此从技术上讲 Eclipse 是正确的。
Now how do I work around this so that I can define cascading environment variables in Eclipse?
现在我该如何解决这个问题，以便我可以在 Eclipse 中定义级联环境变量？
回答by Paul Webster
It won't recursively expand environment variables from the launch config.
它不会从启动配置递归扩展环境变量。
Even using ${env:VAR}takes it from the environment variables from your eclipse process, not from your current launch config.
即使 using${env:VAR}也从 eclipse 进程的环境变量中获取它，而不是从当前的启动配置中获取。
The most reliable way to do it is to go to Preferences>Run/Debug>String Substitutionand define an eclipse variable there.
最可靠的方法是转到Preferences>Run/Debug>String Substitution并在那里定义一个 eclipse 变量。
Then define the environment variables in your launch config:
然后在启动配置中定义环境变量：
ReportingManagerHome=${RMH}
ReportingManagerConfig=${RMH}\config
回答by NoodleOfDeath
In Eclipse Mars and later you can use
在 Eclipse Mars 及更高版本中，您可以使用
${env_var:VAR_NAME}
