JNative使用，调用动态库

来源：互联网发布：交换机网络克隆 h3c 编辑：程序博客网时间：2024/04/30 05:41
由于项目需要，使用读卡机，C++没学好，一些动态库使用起来很困难，在网上搜了好久发现JNative是一个很好的选择，简单，方便，只需要简单的几步就能很好调用动态库，下面是我写一段测试代码：
package JNative;
import java.io.IOException;
import java.util.StringTokenizer;
import org.xvolks.jnative.JNative;
import org.xvolks.jnative.Type;
import org.xvolks.jnative.exceptions.NativeException;
import org.xvolks.jnative.pointers.Pointer;
import org.xvolks.jnative.pointers.memory.MemoryBlockFactory;
public class T2 {
    /**
     * @param args
     * @throws NativeException 
     * @throws IllegalAccessException 
     * @throws IOException 
     */
    public static void main(String[] args) throws NativeException, IllegalAccessException, IOException {
        T2 t=new T2();
        t.Init();
        t.getName();
        
    
        //======CVR_ReadBaseMsg================== 
        JNative n8 = new JNative("termb.dll", "CVR_ReadBaseMsg");
        Pointer pointer11 = new Pointer(MemoryBlockFactory.createMemoryBlock(1000));
        Pointer pointer12 = new Pointer(MemoryBlockFactory.createMemoryBlock(256));
        Pointer pointer13 = new Pointer(MemoryBlockFactory.createMemoryBlock(1024*1000));
        Pointer pointer14 = new Pointer(MemoryBlockFactory.createMemoryBlock(1024));
        int i=0;
        n8.setParameter(i++, pointer11);
        n8.setParameter(i++, pointer12);
        n8.setParameter(i++, pointer13);
        n8.setParameter(i++, pointer14);
        n8.setParameter(i++, 4);
        n8.setRetVal(Type.INT);
        n8.invoke();
        String msg=pointer11.getAsString();
        StringTokenizer st=new StringTokenizer(msg);
        /*while(st.hasMoreElements()){
            System.out.println(st.nextElement());
        }*/
        t.Close();
    }
    
    /**
     * 分配内存，并返回指针
     */
    public static Pointer createPointer() throws NativeException {
        Pointer pointer = new Pointer(MemoryBlockFactory.createMemoryBlock(getSizeOf()));
        return pointer;
    }
    /**
     * 内存大小
     */
    public static int getSizeOf(){
        return 2 * 2;
    }
    
    public  String getName() throws NativeException, IllegalAccessException{
        //读姓名 
        JNative n4 = new JNative("termb.dll", "GetPeopleName");
        Pointer pointer3 = new Pointer(MemoryBlockFactory.createMemoryBlock(10));
        Pointer pointer4 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
        n4.setParameter(0, pointer3);
        n4.setParameter(1,pointer4);
        n4.setRetVal(Type.INT);
        n4.invoke();
        String name=pointer3.getAsString();
        if(n4.getRetValAsInt()==1){
            //System.out.println(n4.getRetVal()); 
            System.out.println("读取完毕！");
        }       
        //System.out.println("返回值："+n4.getRetValAsInt()); 
        System.out.println("姓名是--长度："+name.length()+"       姓名--"+name);
        return name;
    }
    
    public  String getSex() throws NativeException, IllegalAccessException{
        //读性别 
        JNative n2 = new JNative("termb.dll", "GetPeopleSex");
        Pointer pointer1 = new Pointer(MemoryBlockFactory.createMemoryBlock(8));
        Pointer pointer2 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
        n2.setParameter(0, pointer1);
        n2.setParameter(1,pointer2);
        n2.setRetVal(Type.INT);
        n2.invoke();
        String sex=pointer1.getAsString();
        if(n2.getRetValAsInt()==1){
            System.out.println(n2.getRetVal());
            System.out.println("读取完毕！");
        }       
        System.out.println("返回值："+n2.getRetValAsInt());
        System.out.println("性别是--长度："+sex.length()+"        性别--"+sex);
        return sex;
    }
    public  String getIDNo() throws NativeException, IllegalAccessException{
        //读身份证号 
        JNative n5 = new JNative("termb.dll", "GetPeopleIDCode");
        Pointer pointer5 = new Pointer(MemoryBlockFactory.createMemoryBlock(18));
        Pointer pointer6 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
        n5.setParameter(0, pointer5);
        n5.setParameter(1,pointer6);
        n5.setRetVal(Type.INT);
        n5.invoke();
        String IDNo=pointer5.getAsString();
        if(n5.getRetValAsInt()==1){
            System.out.println(n5.getRetVal());
            System.out.println("读取完毕！");
        }       
        System.out.println("返回值："+n5.getRetValAsInt());
        System.out.println("身份证号是--长度："+IDNo.length()+"     身份证号--"+IDNo);
        return IDNo;
    }
    
    public  String getAddress() throws NativeException, IllegalAccessException{
        //读地址 
        JNative n6 = new JNative("termb.dll", "GetPeopleAddress");
        Pointer pointer7 = new Pointer(MemoryBlockFactory.createMemoryBlock(100));
        Pointer pointer8 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
        n6.setParameter(0, pointer7);
        n6.setParameter(1,pointer8);
        n6.setRetVal(Type.INT);
        n6.invoke();
        String address=pointer7.getAsString();
        if(n6.getRetValAsInt()==1){
            System.out.println(n6.getRetVal());
            System.out.println("读取完毕！");
        }       
        System.out.println("返回值："+n6.getRetValAsInt());
        System.out.println("地址是--长度："+address.length()+"        地址--"+address);         
        return address;
    }
    
    public  String getDepartment() throws NativeException, IllegalAccessException{
        //读发证机关 
        JNative n7 = new JNative("termb.dll", "GetDepartment");
        Pointer pointer9 = new Pointer(MemoryBlockFactory.createMemoryBlock(100));
        Pointer pointer10 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
        n7.setParameter(0, pointer9);
        n7.setParameter(1,pointer10);
        n7.setRetVal(Type.INT);
        n7.invoke();
        String department=pointer9.getAsString();
        if(n7.getRetValAsInt()==1){
            System.out.println(n7.getRetVal());
            System.out.println("读取完毕！");
        }       
        System.out.println("返回值："+n7.getRetValAsInt());
        System.out.println("地址是--长度："+department.length()+"     地址--"+department);  
        return department;
    }
    
    public  String getBirth() throws NativeException, IllegalAccessException{
        //读生日 
        JNative n9 = new JNative("termb.dll", "GetPeopleBirthday");
        Pointer pointer15 = new Pointer(MemoryBlockFactory.createMemoryBlock(100));
        Pointer pointer16 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
        n9.setParameter(0, pointer15);
        n9.setParameter(1,pointer16);
        n9.setRetVal(Type.INT);
        n9.invoke();
        String birth=pointer15.getAsString();
        if(n9.getRetValAsInt()==1){
            System.out.println(n9.getRetVal());
            System.out.println("读取完毕！");
        }       
        System.out.println("返回值："+n9.getRetValAsInt());
        System.out.println("生日是--长度："+birth.length()+"      生日--"+birth);   
        return birth;
    }
    
    public void Init() throws NativeException, IllegalAccessException{
        JNative n = new JNative("termb.dll", "CVR_InitComm");
        n.setRetVal(Type.INT);
        n.setParameter(0,1001);             
        n.invoke();
        System.out.println("请放置身份证！");
        int cnt=0;
        for(int i=0;;i++){
            //System.out.println("请正确放置身份证！ "); 
            cnt++;
            JNative n3= new JNative("termb.dll", "CVR_Authenticate");
            n3.setRetVal(Type.INT);
            n3.invoke();
            //System.out.println(n3.getRetVal()); 
            int r=n3.getRetValAsInt();
            if(r==1){
                break;
            }
        }
        System.out.println("正确放置，身份证初始化完成，卡放置正确！");     
        JNative n1 = new JNative("termb.dll", "CVR_Read_Content");
        n1.setParameter(0,6);
        n1.setRetVal(Type.INT);
        n1.invoke();
        //System.out.println(n1.getRetVal()); 
        if(n1.getRetValAsInt()==1){
            System.out.println("读卡操作正确！");
        }
    }
    
    public void Close() throws NativeException, IllegalAccessException{
        JNative n1 = new JNative("termb.dll", "CVR_CloseComm");
        n1.invoke();
        
        //int t=n1.getRetValAsInt(); 
    }
}