尝试使用Java(JNA)中的DLL。无法加载库异常 [英] Trying to use DLL from Java (JNA). Unable to load library exception

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本文介绍了尝试使用Java(JNA)中的DLL。无法加载库异常的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

我有从教程的NetBeans项目,其中导致异常:



线程main中的异常 java.lang.UnsatisfiedLinkError:无法加载库'simpleDLL' :找不到指定的模块。



试图将simpleDLL.dll放在项目库中,在system32文件夹中复制文件没有成功。

解决方案

我在加载DLL时有完全相同的问题,我以这种方式解决了:




  • 正如Christian Kuetbach所说,检查您使用的simpleDLL是否与处理器的体系结构兼容,32位DLL不能在64位机器上工作,还有64位DLL不能在32位机器上工作。

  • 如果DLL兼容,则问题可能在您的java库路径中。我将我的DLL放入 user.dir 目录中,然后我使用这个代码:



    将Java库路径设置为 user.dir 或者您想要的其他路径:

      String myLibraryPath = System.getProperty(user.dir); //或另一个绝对或相对路径

    System.setProperty(java.library.path,myLibraryPath);

    加载库:



    系统。 loadLibrary(libraryWithoutDLLExtension);




它为我工作,尝试它告诉我,如果它适用于你。


I have NetBeans project from tutorial which causes exception:

Exception in thread "main" java.lang.UnsatisfiedLinkError: Unable to load library 'simpleDLL': The specified module could not be found.

Tried to put simpleDLL.dll in project libraries, copied file in system32 folder with no success.

解决方案

I had exactly the same problem with loading a DLL, I solved it in this way:

  • As Christian Kuetbach said, check if the simpleDLL you are using is compatible with your processor's architecture, a 32-bit DLL won't work on a 64-bit machine, and also a 64-bit DLL won't work on a 32-bit machine.
  • If the DLL is compatible, then the problem may be in your java library path. I put my DLL into the user.dir directory and then I used this code:

    Set Java library path to user.dir or maybe another path you want:

    String myLibraryPath = System.getProperty("user.dir");//or another absolute or relative path
    
    System.setProperty("java.library.path", myLibraryPath);
    

    Load the library:

    System.loadLibrary("libraryWithoutDLLExtension");

It worked for me, try it and tell me if it works for you.

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