在JNA中映射原语类型，同时保留原生type类

import com.sun.jna.Native;
import com.sun.jna.NativeLibrary;
import com.sun.jna.NativeMapped;
import com.sun.jna.Pointer;
import com.sun.jna.ptr.ByReference;

public class NativeTypeMappingExample {

    // 自定义原生类型映射
    public interface MyNativeTypeMapper extends NativeTypeMapper {
        Class<?> getNativeType(Class<?> javaType);
    }

    // 实现自定义原生类型映射
    public static class MyTypeMapper implements MyNativeTypeMapper {
        @Override
        public Class<?> getNativeType(Class<?> javaType) {
            if (javaType == int.class) {
                return NativeMapped.class;
            }
            return javaType;
        }
    }

    // 定义原生类型
    public static class MyNativeType implements NativeMapped {
        private int value;

        public MyNativeType() {
        }

        public MyNativeType(int value) {
            this.value = value;
        }

        @Override
        public Object fromNative(Object nativeValue, FromNativeContext context) {
            if (nativeValue instanceof Integer) {
                return new MyNativeType((Integer) nativeValue);
            }
            return null;
        }

        @Override
        public Object toNative() {
            return value;
        }

        @Override
        public Class<?> nativeType() {
            return int.class;
        }
    }

    // 加载动态链接库
    static {
        Native.register(NativeLibrary.getInstance("mylib"));
    }

    // 声明原生方法
    public static native void myNativeMethod(MyNativeType arg);

    public static void main(String[] args) {
        // 设置自定义类型映射
        Native.setPreserveLastError(true);
        Native.register(NativeLibrary.getInstance("mylib", new MyTypeMapper()));

        // 调用原生方法
        MyNativeType arg = new MyNativeType(42);
        myNativeMethod(arg);
    }
}