java調用dll

java調用dll

首選寫dll

# include <Windows.h>
_declspec(dllexport) char* go(char *ch)
{ 
	MessageBox(NULL, TEXT(ch), TEXT("你好"), MB_OK);
	return "來自dll的問候";
}

注意改成動態庫再生成

java調用

復制生成的dll到java項目的根目錄

然后寫調用代碼

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

public class JNAUtilsTest {
    public interface Dll extends Library {
        JNAUtilsTest.Dll INSTANCE = (JNAUtilsTest.Dll) Native.loadLibrary("go", JNAUtilsTest.Dll.class);// 加載動態庫文件
        String go(String s);
    }
    
    public static void main(String[] args){
        System.setProperty("jna.encoding", "GBK");//解決中文亂碼
        String go = Dll.INSTANCE.go("777");
        System.out.println(go);
    }
    }

結果: