我的项目比较复杂,需要调用动态链接库,这样在JNI传送参数到C程序时,需要对参数进行处理转换。才可以被C程序识别。
大体程序如下:
public class SendSMS { static { System.out.println(System.getProperty("java.library.path")); System.loadLibrary("sms"); } public native static int SmsInit(); public native static int SmsSend(byte[] mobileNo, byte[] smContent); } 在这里要注意的是,path里一定要包含类库的路径,否则在程序运行时会抛出异常: java.lang.UnsatisfiedLinkError: no sms in java.library.path at java.lang.ClassLoader.loadLibrary(ClassLoader.java:1491) at java.lang.Runtime.loadLibrary0(Runtime.java:788) at java.lang.System.loadLibrary(System.java:834) at com.mobilesoft.sms.mobilesoftinfo.SendSMS./* DO NOT EDIT THIS FILE - it is machine generated */
#include /* * SMS API * Author: yippit * Date: 2004.6.8 */ #ifndef MCS_SMS_H #define MCS_SMS_H #define DLLEXPORT __declspec(dllexport) /*sms storage*/ #define SMS_SIM 0 #define SMS_MT 1 /*sms states*/ #define SMS_UNREAD 0 #define SMS_READ 1 /*sms type*/ #define SMS_NOPARSE -1 #define SMS_NORMAL 0 #define SMS_FLASH 1 #define SMS_MMSNOTI 2 typedef struct tagSmsEntry { int index; /*index, start from 1*/ int status; /*read, unread*/ int type; /*-1-can't parser 0-normal, 1-flash, 2-mms*/ int storage; /*SMS_SIM, SMS_MT*/ char date[24]; char number[32]; char text[144]; } SmsEntry; DLLEXPORT int SmsInit(void); DLLEXPORT int SmsSend(char *phonenum, char *content); DLLEXPORT int SmsSetSCA(char *sca); DLLEXPORT int SmsGetSCA(char *sca); DLLEXPORT int SmsSetInd(int ind); DLLEXPORT int SmsGetInd(void); DLLEXPORT int SmsGetInfo(int storage, int *max, int *used); DLLEXPORT int SmsSaveFlash(int flag); DLLEXPORT int SmsRead(SmsEntry *entry, int storage, int index); DLLEXPORT int SmsDelete(int storage, int index); DLLEXPORT int SmsModifyStatus(int storage, int index); /*unread -> read*/ #endif |
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2005-06-17 10:20
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