使用JNA访问从Java编译为本机代码的C＃方法

Question

I have a C# class with one method compiled to native code, that I want to call from Java method using JNA . That class is packed as dll in a file called DataGrabber.dll. This is the C# code:

namespace GrabberLibrary {
    public class Grabber {
        public void GetData(String projectId, String importURI){
            //implementation code
        }
    }
}

I've implemented the interface as suggested:

import com.sun.jna.Library;
import com.sun.jna.Native;

public interface Grabber extends Library{
    Grabber INSTANCE = (Grabber)Native.loadLibrary("Grabber", Grabber.class);

    void GetData(String projectId, String importURI);
}

and then when I call this GetData method from the main method in Java like this:

System.setProperty("jna.library.path", "C:\\dlls");
Grabber sgl = Grabber.INSTANCE;
sgl.GetData("123", "http://localhost/test");

I get the following exception:

java.lang.UnsatisfiedLinkError: Unable to load library 'Grabber': The specified module could not be found.

On the other hand, if I put the name of the dll which is the same as the namespace defined in C# code (DataGrabber) I get:

java.lang.UnsatisfiedLinkError: Error looking up function 'GetData': The specified procedure could not be found.

How can I call GetData method?

Answer 1

I think you are trying to load DLL file in wrong place, it should be in main method. Look at here please : http://aboulton.blogspot.com/2012/07/netbeans-and-java-native-access.html