本机库,错误:此 Java 实例不支持 32 位 JVM
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Native Libraries, Error: This Java instance does not support a 32-bit JVM
提问by Matthew Sutter
Hello stackoverflow community,
你好,stackoverflow 社区,
I'm using NetBeans IDE 7.2.1, and I'm trying to compile+run a project with native libraries. My libraries require a 32 bit JVM. I'm running Windows 7 64-bit. When attempting to compile+run my project I'm met with the following:
我正在使用 NetBeans IDE 7.2.1,并且我正在尝试使用本机库编译+运行一个项目。我的库需要 32 位 JVM。我正在运行 Windows 7 64 位。在尝试编译+运行我的项目时,我遇到了以下问题:
Error: This Java instance does not support a 32-bit JVM.
Please install the desired version.
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
I have tried going to configuration and included the following arguments (to no avail):
我尝试去配置并包含以下参数(无济于事):
-d32
-d32 -vm "C:\Program Files (x86)\Java\jre7\bin\javaw.exe"
-vm "C:\Program Files (x86)\Java\jre7\bin\javaw.exe"
I have both 64 bit JRE and 32 bit JRE installed, and both a 64 bit JDK and 32 bit JDK available in my platform manager.
我同时安装了 64 位 JRE 和 32 位 JRE,并且我的平台管理器中同时提供了 64 位 JDK 和 32 位 JDK。
Any suggestions to resolve this? I've read that you can get issues by installing the 64 bit JRE before the 32 bit JRE; is this one of those issues? (I have indeed installed 64 bit first)
有什么建议可以解决这个问题吗?我读过你可以通过在 32 位 JRE 之前安装 64 位 JRE 来解决问题;这是其中之一吗?(我确实先安装了 64 位)
采纳答案by 11684
When you start a process (for example on the command prompt, but it's the same AFAIK when you start another process from code) a certain group of paths (contained in the PATH (?) environment variable) is searched for an executable with a name matching what you entered. If the 64-bit and 32-bit version have the same name and the 64-bit version is found first, that one will be executed. I recommend specifying the full path of the 32-bit JDK.
当您启动一个进程时(例如在命令提示符下,但是当您从代码启动另一个进程时它是相同的 AFAIK)搜索特定组路径(包含在 PATH (?) 环境变量中)具有名称的可执行文件匹配您输入的内容。如果 64 位和 32 位版本具有相同的名称,并且首先找到 64 位版本,则将执行该版本。我建议指定 32 位 JDK 的完整路径。
EDIT:
I just saw the question is about the NetBeans IDE. I've never used that, so the only advice I can give you is to look in NetBeans' settings, and adjust the path to the JDK and JRE, making it point to the 32-bit version. I'll leave my answer here for people not using NetBeans.
编辑:
我刚刚看到问题是关于 NetBeans IDE。我从来没有用过它,所以我能给你的唯一建议是查看 NetBeans 的设置,并调整 JDK 和 JRE 的路径,使其指向 32 位版本。对于不使用 NetBeans 的人,我将在这里留下我的答案。
回答by bballdave025
Thanks to @11684 for the great answer. I would simply like to add a code example for those who compile from the command line/Command Prompt.
感谢@11684 的精彩回答。我只想为那些从命令行/命令提示符编译的人添加一个代码示例。
For the compilation, it shouldn't matter which javac
gets used - 32-bit or 64-bit.
对于编译,javac
使用哪个无关紧要- 32 位或 64 位。
>javac MyJavaProgramUsing32BitNativeLib.java
For the actual execution of the program, it isimportant to specify the path to the 32-bit version of java.exe
对于程序的实际执行,指定 32 位版本的路径很重要java.exe
I'll post a code example for Windows
, since that seems to be the OS used by the OP.
我将发布一个代码示例Windows
,因为这似乎是 OP 使用的操作系统。
Windows
视窗
Most likely, the code will be something like:
最有可能的代码是这样的:
>"C:\Program Files (x86)\Java\jre#.#.#_###\bin\java.exe" MyJavaProgramUsing32BitNativeLib
The difference will be in the numbers after jre
. To find which numbers you should use, enter:
区别在于 之后的数字jre
。要查找您应该使用的数字,请输入:
>dir "C:\Program Files (x86)\Java\"
On my machine, the process is as follows
在我的机器上,过程如下
C:\Users\me\MyProject>dir "C:\Program Files (x86)\Java"
Volume in drive C is Windows
Volume Serial Number is 0000-9999
Directory of C:\Program Files (x86)\Java
11/03/2016 09:07 PM <DIR> .
11/03/2016 09:07 PM <DIR> ..
11/03/2016 09:07 PM <DIR> jre1.8.0_111
0 File(s) 0 bytes
3 Dir(s) 107,641,901,056 bytes free
C:\Users\me\MyProject>
So I know that my numbers are 1.8.0_111
, and my command is
所以我知道我的号码是1.8.0_111
,我的命令是
C:\Users\me\MyProject>"C:\Program Files (x86)\Java\jre1.8.0_111\bin\java.exe" MyJavaProgramUsing32BitNativeLib