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. packageJNative;
3. importjava.io.IOException;
4. importjava.util.StringTokenizer;
6. importorg.xvolks.jnative.JNative;
7. importorg.xvolks.jnative.Type;
8. importorg.xvolks.jnative.exceptions.NativeException;
9. importorg.xvolks.jnative.pointers.Pointer;
10. importorg.xvolks.jnative.pointers.memory.MemoryBlockFactory;
12. publicclassT2{
14. /**
15. *@paramargs
16. *@throwsNativeException
17. *@throwsIllegalAccessException
18. *@throwsIOException
19. */
20. publicstaticvoidmain(String[]args)throwsNativeException,IllegalAccessException,IOException{
21. T2t=newT2();
22. t.Init();
23. t.getName();
26. //======CVR_ReadBaseMsg==================
27. JNativen8=newJNative("termb.dll","CVR_ReadBaseMsg");
28. Pointerpointer11=newPointer(MemoryBlockFactory.createMemoryBlock(1000));
29. Pointerpointer12=newPointer(MemoryBlockFactory.createMemoryBlock(256));
30. Pointerpointer13=newPointer(MemoryBlockFactory.createMemoryBlock(1024*1000));
31. Pointerpointer14=newPointer(MemoryBlockFactory.createMemoryBlock(1024));
32. inti=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. Stringmsg=pointer11.getAsString();
41. StringTokenizerst=newStringTokenizer(msg);
42. /*while(st.hasMoreElements()){
43. System.out.println(st.nextElement());
44. }*/
45. t.Close();
46. }
48. /**
49. *分配内存，并返回指针
50. */
51. publicstaticPointercreatePointer()throwsNativeException{
52. Pointerpointer=newPointer(MemoryBlockFactory.createMemoryBlock(getSizeOf()));
53. returnpointer;
54. }
56. /**
57. *内存大小
58. */
59. publicstaticintgetSizeOf(){
60. return2*2;
61. }
63. publicStringgetName()throwsNativeException,IllegalAccessException{
64. //读姓名
65. JNativen4=newJNative("termb.dll","GetPeopleName");
66. Pointerpointer3=newPointer(MemoryBlockFactory.createMemoryBlock(10));
67. Pointerpointer4=newPointer(MemoryBlockFactory.createMemoryBlock(2));
68. n4.setParameter(0,pointer3);
69. n4.setParameter(1,pointer4);
70. n4.setRetVal(Type.INT);
71. n4.invoke();
72. Stringname=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. returnname;
80. }
82. publicStringgetSex()throwsNativeException,IllegalAccessException{
83. //读性别
84. JNativen2=newJNative("termb.dll","GetPeopleSex");
85. Pointerpointer1=newPointer(MemoryBlockFactory.createMemoryBlock(8));
86. Pointerpointer2=newPointer(MemoryBlockFactory.createMemoryBlock(2));
87. n2.setParameter(0,pointer1);
88. n2.setParameter(1,pointer2);
89. n2.setRetVal(Type.INT);
90. n2.invoke();
91. Stringsex=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. returnsex;
99. }
101. publicStringgetIDNo()throwsNativeException,IllegalAccessException{
102. //读身份证号
103. JNativen5=newJNative("termb.dll","GetPeopleIDCode");
104. Pointerpointer5=newPointer(MemoryBlockFactory.createMemoryBlock(18));
105. Pointerpointer6=newPointer(MemoryBlockFactory.createMemoryBlock(2));
106. n5.setParameter(0,pointer5);
107. n5.setParameter(1,pointer6);
108. n5.setRetVal(Type.INT);
109. n5.invoke();
110. StringIDNo=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. returnIDNo;
118. }
120. publicStringgetAddress()throwsNativeException,IllegalAccessException{
121. //读地址
122. JNativen6=newJNative("termb.dll","GetPeopleAddress");
123. Pointerpointer7=newPointer(MemoryBlockFactory.createMemoryBlock(100));
124. Pointerpointer8=newPointer(MemoryBlockFactory.createMemoryBlock(2));
125. n6.setParameter(0,pointer7);
126. n6.setParameter(1,pointer8);
127. n6.setRetVal(Type.INT);
128. n6.invoke();
129. Stringaddress=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. returnaddress;
137. }
139. publicStringgetDepartment()throwsNativeException,IllegalAccessException{
140. //读发证机关
141. JNativen7=newJNative("termb.dll","GetDepartment");
142. Pointerpointer9=newPointer(MemoryBlockFactory.createMemoryBlock(100));
143. Pointerpointer10=newPointer(MemoryBlockFactory.createMemoryBlock(2));
144. n7.setParameter(0,pointer9);
145. n7.setParameter(1,pointer10);
146. n7.setRetVal(Type.INT);
147. n7.invoke();
148. Stringdepartment=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. returndepartment;
156. }
158. publicStringgetBirth()throwsNativeException,IllegalAccessException{
159. //读生日
160. JNativen9=newJNative("termb.dll","GetPeopleBirthday");
161. Pointerpointer15=newPointer(MemoryBlockFactory.createMemoryBlock(100));
162. Pointerpointer16=newPointer(MemoryBlockFactory.createMemoryBlock(2));
163. n9.setParameter(0,pointer15);
164. n9.setParameter(1,pointer16);
165. n9.setRetVal(Type.INT);
166. n9.invoke();
167. Stringbirth=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. returnbirth;
175. }
177. publicvoidInit()throwsNativeException,IllegalAccessException{
178. JNativen=newJNative("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. intcnt=0;
184. for(inti=0;;i++){
185. //System.out.println("请正确放置身份证！");
186. cnt++;
187. JNativen3=newJNative("termb.dll","CVR_Authenticate");
188. n3.setRetVal(Type.INT);
189. n3.invoke();
190. //System.out.println(n3.getRetVal());
191. intr=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. JNativen1=newJNative("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. }
207. publicvoidClose()throwsNativeException,IllegalAccessException{
208. JNativen1=newJNative("termb.dll","CVR_CloseComm");
209. n1.invoke();
211. //intt=n1.getRetValAsInt();
212. }
213. }