java.lang.UnsatisfiedLinkError：无法加载库

Question

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'：本机 图书馆 (win32-x86-64/C:\Users\Argenit\Desktop\aaa\dll\ErgoPointer_64_Bit.dll) 在资源路径中找不到 ([文件:/C:/Users/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:/Users/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])

如果我在项目中添加 (dll) 作为外部类文件夹并写入：loadLibrary("ErgoPointer_64_Bit")，它可以在这台机器上运行，但是当我使用可运行的 jar 时，它找不到 ErgoPointer_64_Bit 所以我想给出绝对dll的路径。但这对我不起作用。

我也试过了：

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

Answer 1

在调用 Native.loadLibrary() 之前设置系统属性 java.library.path，只使用基本名称。

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);

您还可以在命令行上设置 java.library.path。例如。

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