环境变量来控制java.io.tmpdir？ [英] Environment variable to control java.io.tmpdir?

问题描述

我使用 TMP 环境变量来控制像gcc写它是临时文件，但我似乎找不到等效的java的 createTempFile API。

这样的环境变量是否存在？

在 Windows ，OpenJDK的 get_temp_directory c $ c>函数使Win32 API调用 GetTempPath（）;这是在Windows上，Java反映 TMP 环境变量的值。

在 Linux 和< a href =http://hg.openjdk.java.net/jdk6/jdk6/hotspot/file/14f7b2425c86/src/os/solaris/vm/os_solaris.cpp#l1828 =nofollow noreferrer> Solaris < a>，相同的 get_temp_directory（）函数返回 / tmp / 的静态值。

我不知道实际的JDK6是否遵循这些确切的约定，而是通过在每个列出的平台上的行为，看起来像他们做的。

I've used the TMP environment variable to control things like where gcc writes it's temporary files, but I can't seem to find an equivalent for java's createTempFile API.

Does such an environment variable exist?

解决方案

Hmmm -- since this is handled by the JVM, I delved into the OpenJDK VM source code a little bit, thinking that maybe what's done by OpenJDK mimics what's done by Java 6 and prior. It isn't reassuring that there's a way to do this other than on Windows.

On Windows, OpenJDK's get_temp_directory() function makes a Win32 API call to GetTempPath(); this is how on Windows, Java reflects the value of the TMP environment variable.

On Linux and Solaris, the same get_temp_directory() functions return a static value of /tmp/.

I don't know if the actual JDK6 follows these exact conventions, but by the behavior on each of the listed platforms, it seems like they do.

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