JNative使用，调用动态库 -

yinbinhome

浏览: 125763 次
性别:
来自: 北京

最近访客更多访客>>

sunjunqing

jackzlz

小狮子_

dengfj

博主相关

博客

微博

相册

留言

关于我

文章分类

社区版块

存档分类

JNative使用，调用动态库

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：

packageJNative;

importjava.io.IOException;

importjava.util.StringTokenizer;

importorg.xvolks.jnative.JNative;

importorg.xvolks.jnative.Type;

importorg.xvolks.jnative.exceptions.NativeException;

importorg.xvolks.jnative.pointers.Pointer;

importorg.xvolks.jnative.pointers.memory.MemoryBlockFactory;

publicclassT2{

/**
*@paramargs
*@throwsNativeException
*@throwsIllegalAccessException
*@throwsIOException

*/

publicstaticvoidmain(String[]args)throwsNativeException,IllegalAccessException,IOException{

T2t=newT2();
t.Init();
t.getName();

//======CVR_ReadBaseMsg================== 

JNativen8=newJNative("termb.dll","CVR_ReadBaseMsg");

Pointerpointer11=newPointer(MemoryBlockFactory.createMemoryBlock(1000));

Pointerpointer12=newPointer(MemoryBlockFactory.createMemoryBlock(256));

Pointerpointer13=newPointer(MemoryBlockFactory.createMemoryBlock(1024*1000));

Pointerpointer14=newPointer(MemoryBlockFactory.createMemoryBlock(1024));

inti=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();
Stringmsg=pointer11.getAsString();

StringTokenizerst=newStringTokenizer(msg);

/*while(st.hasMoreElements()){
System.out.println(st.nextElement());

}*/
t.Close();
}

/**
*分配内存，并返回指针

*/

publicstaticPointercreatePointer()throwsNativeException{

Pointerpointer=newPointer(MemoryBlockFactory.createMemoryBlock(getSizeOf()));

returnpointer;
}

/**
*内存大小

*/

publicstaticintgetSizeOf(){

return2*2;
}

publicStringgetName()throwsNativeException,IllegalAccessException{

//读姓名 

JNativen4=newJNative("termb.dll","GetPeopleName");

Pointerpointer3=newPointer(MemoryBlockFactory.createMemoryBlock(10));

Pointerpointer4=newPointer(MemoryBlockFactory.createMemoryBlock(2));

n4.setParameter(0,pointer3);

n4.setParameter(1,pointer4);
n4.setRetVal(Type.INT);
n4.invoke();
Stringname=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);

returnname;
}

publicStringgetSex()throwsNativeException,IllegalAccessException{

//读性别 

JNativen2=newJNative("termb.dll","GetPeopleSex");

Pointerpointer1=newPointer(MemoryBlockFactory.createMemoryBlock(8));

Pointerpointer2=newPointer(MemoryBlockFactory.createMemoryBlock(2));

n2.setParameter(0,pointer1);

n2.setParameter(1,pointer2);
n2.setRetVal(Type.INT);
n2.invoke();
Stringsex=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);

returnsex;
}

publicStringgetIDNo()throwsNativeException,IllegalAccessException{

//读身份证号 

JNativen5=newJNative("termb.dll","GetPeopleIDCode");

Pointerpointer5=newPointer(MemoryBlockFactory.createMemoryBlock(18));

Pointerpointer6=newPointer(MemoryBlockFactory.createMemoryBlock(2));

n5.setParameter(0,pointer5);

n5.setParameter(1,pointer6);
n5.setRetVal(Type.INT);
n5.invoke();
StringIDNo=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);

returnIDNo;
}

publicStringgetAddress()throwsNativeException,IllegalAccessException{

//读地址 

JNativen6=newJNative("termb.dll","GetPeopleAddress");

Pointerpointer7=newPointer(MemoryBlockFactory.createMemoryBlock(100));

Pointerpointer8=newPointer(MemoryBlockFactory.createMemoryBlock(2));

n6.setParameter(0,pointer7);

n6.setParameter(1,pointer8);
n6.setRetVal(Type.INT);
n6.invoke();
Stringaddress=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);

returnaddress;
}

publicStringgetDepartment()throwsNativeException,IllegalAccessException{

//读发证机关 

JNativen7=newJNative("termb.dll","GetDepartment");

Pointerpointer9=newPointer(MemoryBlockFactory.createMemoryBlock(100));

Pointerpointer10=newPointer(MemoryBlockFactory.createMemoryBlock(2));

n7.setParameter(0,pointer9);

n7.setParameter(1,pointer10);
n7.setRetVal(Type.INT);
n7.invoke();
Stringdepartment=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);

returndepartment;
}

publicStringgetBirth()throwsNativeException,IllegalAccessException{

//读生日 

JNativen9=newJNative("termb.dll","GetPeopleBirthday");

Pointerpointer15=newPointer(MemoryBlockFactory.createMemoryBlock(100));

Pointerpointer16=newPointer(MemoryBlockFactory.createMemoryBlock(2));

n9.setParameter(0,pointer15);

n9.setParameter(1,pointer16);
n9.setRetVal(Type.INT);
n9.invoke();
Stringbirth=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);

returnbirth;
}

publicvoidInit()throwsNativeException,IllegalAccessException{

JNativen=newJNative("termb.dll","CVR_InitComm");
n.setRetVal(Type.INT);

n.setParameter(0,1001);
n.invoke();

System.out.println("请放置身份证！");

intcnt=0;

for(inti=0;;i++){

//System.out.println("请正确放置身份证！"); 
cnt++;

JNativen3=newJNative("termb.dll","CVR_Authenticate");
n3.setRetVal(Type.INT);
n3.invoke();

//System.out.println(n3.getRetVal()); 

intr=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！");

JNativen1=newJNative("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！");
}
}

publicvoidClose()throwsNativeException,IllegalAccessException{

JNativen1=newJNative("termb.dll","CVR_CloseComm");
n1.invoke();

//intt=n1.getRetValAsInt(); 
}
}