在Java中加载DLL - Eclipse - JNI [英] Loading DLL in Java - Eclipse - JNI

问题描述

我正在尝试使用以下代码加载一个dll在
System.loadLibrary（mydll）;

该项目放在D ：\development\project\我已将dll放在D：上。然后我在eclipse配置中给出了以下VM参数
-Djava.library.path = D：/

但是当我运行我得到 UnsatisifiedLinkerError 。 googling之后，我使用
System.load（D：\mydll.dll）;

但再次遇到同样的问题，有人可以可以帮助？

解决方案

在库路径中指定DLL文件名，请忽略。另外，您的System.loadLibrary调用应该是'mydll'。我可以告诉你（从经验），如果你将DLL放在Eclipse的项目根目录（即D：\Eclipse Workspace\Proj）中，那么它应该工作。任何进一步的链接器错误可能来自于查找其他DLL的依赖性问题。异常是一样的。使用Dependency Walker（ http://www.dependencywalker.com/ ）来查看您的DLL是否依赖于任何其他不在系统库路径上的东西。

编辑： UnsatisfiedLinkError ：如果Java虚拟机找不到适当的本地语言定义一种声明为native的方法，好像您正在使用不存在的JNI函数。

I am trying to load a dll in java using the following code System.loadLibrary("mydll");

The project is placed in D:\development\project\ and i have placed the dll on D:. I then gave following VM argument in eclipse configuration -Djava.library.path=D:/

But when i run i get UnsatisifiedLinkerError. After googling a bit, I used System.load("D:\mydll.dll");

but again getting the same problem, could someone can help?

解决方案

Where you specify the DLL filename in the library path, omit that. Additionally, your System.loadLibrary call should just be 'mydll'. I can tell you (from experience) that if you put the DLL in the root of your project in Eclipse (i.e., D:\Eclipse Workspace\Proj), it should work. Any further linker errors could be from dependency problems with finding other DLLs. The exception is the same. Use something like Dependency Walker (http://www.dependencywalker.com/) to see if your DLL relies on anything else not on the system library path.

Edit: UnsatisfiedLinkError: Thrown if the Java Virtual Machine cannot find an appropriate native-language definition of a method declared native -- it seems like you are using a JNI function which does not exist.

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