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：

1. package JNative;
3. import java.io.IOException;
4. import java.util.StringTokenizer;
6. import org.xvolks.jnative.JNative;
7. import org.xvolks.jnative.Type;
8. import org.xvolks.jnative.exceptions.NativeException;
9. import org.xvolks.jnative.pointers.Pointer;
10. import org.xvolks.jnative.pointers.memory.MemoryBlockFactory;
12. public class T2 {
14.     /**
15.      * @param args
16.      * @throws NativeException 
17.      * @throws IllegalAccessException 
18.      * @throws IOException 
19.      */
20.     public static void main(String[] args) throws NativeException, IllegalAccessException, IOException {
21.         T2 t=new T2();
22.         t.Init();
23.         t.getName();
24.         
25.     
26.         //======CVR_ReadBaseMsg==================
27.         JNative n8 = new JNative("termb.dll", "CVR_ReadBaseMsg");
28.         Pointer pointer11 = new Pointer(MemoryBlockFactory.createMemoryBlock(1000));
29.         Pointer pointer12 = new Pointer(MemoryBlockFactory.createMemoryBlock(256));
30.         Pointer pointer13 = new Pointer(MemoryBlockFactory.createMemoryBlock(1024*1000));
31.         Pointer pointer14 = new Pointer(MemoryBlockFactory.createMemoryBlock(1024));
32.         int i=0;
33.         n8.setParameter(i++, pointer11);
34.         n8.setParameter(i++, pointer12);
35.         n8.setParameter(i++, pointer13);
36.         n8.setParameter(i++, pointer14);
37.         n8.setParameter(i++, 4);
38.         n8.setRetVal(Type.INT);
39.         n8.invoke();
40.         String msg=pointer11.getAsString();
41.         StringTokenizer st=new StringTokenizer(msg);
42.         /*while(st.hasMoreElements()){
43.             System.out.println(st.nextElement());
44.         }*/
45.         t.Close();
46.     }
47.     
48.     /**
49.      * 分配内存，并返回指针
50.      */
51.     public static Pointer createPointer() throws NativeException {
52.         Pointer pointer = new Pointer(MemoryBlockFactory.createMemoryBlock(getSizeOf()));
53.         return pointer;
54.     }
56.     /**
57.      * 内存大小
58.      */
59.     public static int getSizeOf(){
60.         return 2 * 2;
61.     }
62.     
63.     public  String getName() throws NativeException, IllegalAccessException{
64.         //读姓名
65.         JNative n4 = new JNative("termb.dll", "GetPeopleName");
66.         Pointer pointer3 = new Pointer(MemoryBlockFactory.createMemoryBlock(10));
67.         Pointer pointer4 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
68.         n4.setParameter(0, pointer3);
69.         n4.setParameter(1,pointer4);
70.         n4.setRetVal(Type.INT);
71.         n4.invoke();
72.         String name=pointer3.getAsString();
73.         if(n4.getRetValAsInt()==1){
74.             //System.out.println(n4.getRetVal());
75.             System.out.println("读取完毕！");
76.         }       
77.         //System.out.println("返回值："+n4.getRetValAsInt());
78.         System.out.println("姓名是--长度："+name.length()+"       姓名--"+name);
79.         return name;
80.     }
81.     
82.     public  String getSex() throws NativeException, IllegalAccessException{
83.         //读性别
84.         JNative n2 = new JNative("termb.dll", "GetPeopleSex");
85.         Pointer pointer1 = new Pointer(MemoryBlockFactory.createMemoryBlock(8));
86.         Pointer pointer2 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
87.         n2.setParameter(0, pointer1);
88.         n2.setParameter(1,pointer2);
89.         n2.setRetVal(Type.INT);
90.         n2.invoke();
91.         String sex=pointer1.getAsString();
92.         if(n2.getRetValAsInt()==1){
93.             System.out.println(n2.getRetVal());
94.             System.out.println("读取完毕！");
95.         }       
96.         System.out.println("返回值："+n2.getRetValAsInt());
97.         System.out.println("性别是--长度："+sex.length()+"        性别--"+sex);
98.         return sex;
99.     }
101.     public  String getIDNo() throws NativeException, IllegalAccessException{
102.         //读身份证号
103.         JNative n5 = new JNative("termb.dll", "GetPeopleIDCode");
104.         Pointer pointer5 = new Pointer(MemoryBlockFactory.createMemoryBlock(18));
105.         Pointer pointer6 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
106.         n5.setParameter(0, pointer5);
107.         n5.setParameter(1,pointer6);
108.         n5.setRetVal(Type.INT);
109.         n5.invoke();
110.         String IDNo=pointer5.getAsString();
111.         if(n5.getRetValAsInt()==1){
112.             System.out.println(n5.getRetVal());
113.             System.out.println("读取完毕！");
114.         }       
115.         System.out.println("返回值："+n5.getRetValAsInt());
116.         System.out.println("身份证号是--长度："+IDNo.length()+"     身份证号--"+IDNo);
117.         return IDNo;
118.     }
119.     
120.     public  String getAddress() throws NativeException, IllegalAccessException{
121.         //读地址
122.         JNative n6 = new JNative("termb.dll", "GetPeopleAddress");
123.         Pointer pointer7 = new Pointer(MemoryBlockFactory.createMemoryBlock(100));
124.         Pointer pointer8 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
125.         n6.setParameter(0, pointer7);
126.         n6.setParameter(1,pointer8);
127.         n6.setRetVal(Type.INT);
128.         n6.invoke();
129.         String address=pointer7.getAsString();
130.         if(n6.getRetValAsInt()==1){
131.             System.out.println(n6.getRetVal());
132.             System.out.println("读取完毕！");
133.         }       
134.         System.out.println("返回值："+n6.getRetValAsInt());
135.         System.out.println("地址是--长度："+address.length()+"        地址--"+address);         
136.         return address;
137.     }
138.     
139.     public  String getDepartment() throws NativeException, IllegalAccessException{
140.         //读发证机关
141.         JNative n7 = new JNative("termb.dll", "GetDepartment");
142.         Pointer pointer9 = new Pointer(MemoryBlockFactory.createMemoryBlock(100));
143.         Pointer pointer10 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
144.         n7.setParameter(0, pointer9);
145.         n7.setParameter(1,pointer10);
146.         n7.setRetVal(Type.INT);
147.         n7.invoke();
148.         String department=pointer9.getAsString();
149.         if(n7.getRetValAsInt()==1){
150.             System.out.println(n7.getRetVal());
151.             System.out.println("读取完毕！");
152.         }       
153.         System.out.println("返回值："+n7.getRetValAsInt());
154.         System.out.println("地址是--长度："+department.length()+"     地址--"+department);  
155.         return department;
156.     }
157.     
158.     public  String getBirth() throws NativeException, IllegalAccessException{
159.         //读生日
160.         JNative n9 = new JNative("termb.dll", "GetPeopleBirthday");
161.         Pointer pointer15 = new Pointer(MemoryBlockFactory.createMemoryBlock(100));
162.         Pointer pointer16 = new Pointer(MemoryBlockFactory.createMemoryBlock(2));
163.         n9.setParameter(0, pointer15);
164.         n9.setParameter(1,pointer16);
165.         n9.setRetVal(Type.INT);
166.         n9.invoke();
167.         String birth=pointer15.getAsString();
168.         if(n9.getRetValAsInt()==1){
169.             System.out.println(n9.getRetVal());
170.             System.out.println("读取完毕！");
171.         }       
172.         System.out.println("返回值："+n9.getRetValAsInt());
173.         System.out.println("生日是--长度："+birth.length()+"      生日--"+birth);   
174.         return birth;
175.     }
176.     
177.     public void Init() throws NativeException, IllegalAccessException{
178.         JNative n = new JNative("termb.dll", "CVR_InitComm");
179.         n.setRetVal(Type.INT);
180.         n.setParameter(0,1001);             
181.         n.invoke();
182.         System.out.println("请放置身份证！");
183.         int cnt=0;
184.         for(int i=0;;i++){
185.             //System.out.println("请正确放置身份证！ ");
186.             cnt++;
187.             JNative n3= new JNative("termb.dll", "CVR_Authenticate");
188.             n3.setRetVal(Type.INT);
189.             n3.invoke();
190.             //System.out.println(n3.getRetVal());
191.             int r=n3.getRetValAsInt();
192.             if(r==1){
193.                 break;
194.             }
195.         }
196.         System.out.println("正确放置，身份证初始化完成，卡放置正确！");     
197.         JNative n1 = new JNative("termb.dll", "CVR_Read_Content");
198.         n1.setParameter(0,6);
199.         n1.setRetVal(Type.INT);
200.         n1.invoke();
201.         //System.out.println(n1.getRetVal());
202.         if(n1.getRetValAsInt()==1){
203.             System.out.println("读卡操作正确！");
204.         }
205.     }
206.     
207.     public void Close() throws NativeException, IllegalAccessException{
208.         JNative n1 = new JNative("termb.dll", "CVR_CloseComm");
209.         n1.invoke();
210.         
211.         //int t=n1.getRetValAsInt();
212.     }
213. }