分布式jar中的JNI Unsatisfied链接错误

Question

我有一个通过 JNI 库连接到指纹扫描仪的 java 项目。我的项目在 netbeans 中完美运行，jni 文件位于 java 项目的根目录中。当我尝试将其打包为 jar 时会出现问题。我有这个错误：

C:\Users\dwake\Desktop\OnceAgain\TestJob\dist>java -jar TestJob.jar
Exception in thread "AWT-EventQueue-0" java.lang.UnsatisfiedLinkError: no scannerJNI in java.library.path
    at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1860)
    at java.lang.Runtime.loadLibrary0(Runtime.java:845)
    at java.lang.System.loadLibrary(System.java:1084)
    at scanner.scannerGUI.<clinit>(Unknown Source)
    at scanner.main$1.run(Unknown Source)
    at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:251)
    at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:701)
    at java.awt.EventQueue.access$000(EventQueue.java:102)
    at java.awt.EventQueue$3.run(EventQueue.java:662)
    at java.awt.EventQueue$3.run(EventQueue.java:660)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
    at java.awt.EventQueue.dispatchEvent(EventQueue.java:671)
    at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:244)
    at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:163)
    at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:151)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:147)
    at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:139)
    at java.awt.EventDispatchThread.run(EventDispatchThread.java:97)

我知道这是由于库文件不在正确的目录中或 java 虚拟机找不到。如何让我的 JNI 库与 jar 一起编译？

附：我尝试使用 7zip 打开 jar 并将 .dll 文件放入 jar 中，但这并没有帮助。

Answer 1

试试这个：

java -Djava.library.path=/path/to/dlls/ -jar TestJob.jar