如何从jna或其他库访问vb.net本机dll文件的类和方法

Question

What I have
a) I have used jna library.
b) My dll is vb.net native dll file.
c) You can check this link for more about dll link

My source code is following

Interface

package com.dll.lib;

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

public interface BrowseControl extends Library {
    BrowseControl instance = (BrowseControl)Native.loadLibrary("Vertex FXBOAPI10.5.9", BrowseControl.class);
}

Class

package com.dll.main;

import com.dll.lib.BrowseControl;

public class MainTest {

    public static void main(String[] args) {
        BrowseControl control=BrowseControl.instance;
            System.out.println("Brwoser: "+control.getClass());
        }  
    }

}

This code is working.

What I want
a) how to access their classes and method from dll in java programming language?

b) how to reference the {VertexFX Backoffice API} Dll, then define Object of type CVertexFXBOAPI class, after that call the methods Object.SetLoginInfo and Object.Login

Thanks

Answer 1

Yo can use native code from shared library via JNI. JNI provides bridge between Java and your code. However, you have to make sure that you keep naming convention for your native routines.

In your case (where you have DLL with native code you want to call) you can go via JNI wrapper that will code the code. This way, you can leave DLL as it is.

Take a look here for a sample code where:

http://jnicookbook.owsiak.org/recipe-No-018/

This is not exactly what you are looking for (as the code is for macOS/Linux) but the schema will be very similar.

Your JNI wrapper (called from Java) - this will be a native code - will load library you already have (one that is inside DLL produced by somebody else). Then, you will need to call a function from that DLL.