java.lang.UnsatisfiedLinkError：无法加载库 [英] java.lang.UnsatisfiedLinkError: Unable to load library

问题描述

（$）$ DLL code DLL DLL INSTANCE =（DLL）Native.loadLibrary（Settings.getSingletonInstance（）。getProperty（default.ergoPointer.path），DLL.class）

我将dll路径存储在设置文件中。当我输出

  Settings.getSingletonInstance（）。getProperty（default.ergoPointer.path
  

这里： C：\Users\Argenit\Desktop\aaa\dll\ ErgoPointer_64_Bit.dll

错误部分：

java.lang.UnsatisfiedLinkError：无法加载库
'C：\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit.dll'：Native
library
win32-x86-64 / C：\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit.dll）
在资源路径中找不到
（[file：/ C：/用户/ Argenit / Desktop / Pathology_JAVA / Digital_Pathology / bin /，
文件：/ C：/ Users / Argenit / Desktop / Pathology_JAVA / Digital_Pathology / resources /，
文件：/ C：/ Users / Argenit / Desktop / Pathology_JAVA / Digital_Pathology / lib / fits.jar，
文件：/ C：/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/json.jar，
文件：/ C：/ Use rs / Argenit / Desktop / Pathology_JAVA / Digital_Pathology / lib / junit-4.8.2.jar，
文件：/ C：/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/kdu_jni.jar，
文件：/ C：/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/log4j-1.2.16.jar，
文件：/ C：/ Users / Argenit / Desktop / Pathology_JAVA / Digital_Pathology / JNA / jna- 4.1.0.jar，
文件：/ C：/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/JNA/jna-platform-4.1.0.jar，
文件：/ C：/ Users / Argenit / Desktop / Pathology_JAVA / Digital_Pathology / lib / ini4j-0.5.4.jar，
文件：/ C：/ Users / Argenit / Desktop / Pathology_JAVA / Digital_Pathology / JNA /，
文件：/ C： /Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/gluegen-rt.jar，
文件：/ C：/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/jogl.jar]）

如果我将（dll）添加为项目中的外部类文件夹，并写入： loadLibrary（ErgoPointer_64_Bit），它在这台机器上工作，但是当我拿着可运行的jar，它不能找到 ErgoPointer_64_Bit 所以我想给绝对路径的dll。但是这并不适用于我。

我也尝试过：

C：\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit

dll\ErgoPointer_64_Bit

ErgoPointer_64_Bit

dll\ErgoPointer_64_Bit.dll

ErgoPointer_64_Bit.dll

解决方案

在调用Native.loadLibrary（）之前设置系统属性java.library.path。

  System.setProperty（java.library.path，
C：\\Users\ \Argenit\\Desktop\\aaa\\dll;
 + System.getProperty（java.library.path））; 
 DLL INSTANCE =（DLL）Native.loadLibrary（ErgoPointer_64_Bit，DLL.class）; 
  

您还可以在命令行中设置java.library.path。例如。

  java-Djava.library.path = C：\Users\Argenit\Desktop\aaa\\ \\ dll\-jar somejar.jar 
  

DLL INSTANCE = (DLL) Native.loadLibrary(Settings.getSingletonInstance().getProperty("default.ergoPointer.path"), DLL.class);

I store the dll path in settings file. When i take output of

Settings.getSingletonInstance().getProperty("default.ergoPointer.path"

here : C:\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit.dll

Error part :

java.lang.UnsatisfiedLinkError: Unable to load library 'C:\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit.dll': Native library (win32-x86-64/C:\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit.dll) not found in resource path ([file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/bin/, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/resources/, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/fits.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/json.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/junit-4.8.2.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/kdu_jni.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/log4j-1.2.16.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/JNA/jna-4.1.0.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/JNA/jna-platform-4.1.0.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/ini4j-0.5.4.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/JNA/, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/gluegen-rt.jar, file:/C:/Users/Argenit/Desktop/Pathology_JAVA/Digital_Pathology/lib/jogl.jar])

If i add (dll) as a external class folder in project and write : loadLibrary("ErgoPointer_64_Bit"), it works in this machine but when i take the runnable jar, it couldn' t find ErgoPointer_64_Bit so i want to give absolute path of dll. But it doesn' t work for me.

I also tried :

C:\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit

dll\ErgoPointer_64_Bit

ErgoPointer_64_Bit

dll\ErgoPointer_64_Bit.dll

ErgoPointer_64_Bit.dll

解决方案

Set the system property java.library.path before the call Native.loadLibrary() with just the base name.

System.setProperty("java.library.path", 
            "C:\\Users\\Argenit\\Desktop\\aaa\\dll;" 
              + System.getProperty("java.library.path"));
DLL INSTANCE = (DLL) Native.loadLibrary("ErgoPointer_64_Bit", DLL.class);

You can also set the java.library.path on the command line. eg.

java "-Djava.library.path=C:\Users\Argenit\Desktop\aaa\dll\" -jar somejar.jar

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