Linux 上写C++（8） 如何调用动态库

#include <stdio.h>

#include <dlfcn.h>

#include <iostream>

using namespace std;

typedef int (*IVR_HTTP_Server)(

char *V_INTERFACE_NAME,

char *V_SERIAL_NUMBER,

char *V_PARAM,

char *V_ResultCode,

char *V_Field1,

char *V_Field2,

char *V_Field3,

char *V_Field4,

char *V_Field5,

char *O_Result

);

void Do_QHAI_UNHQ_CCScoreInfo()

{

void *myhandle;

//加载动态库

myhandle=dlopen("./IVR_HTTP_Server.so",RTLD_LAZY);//open lib file

IVR_HTTP_Server  HTTP_Request=(IVR_HTTP_Server)dlsym(myhandle,"HTTP_Request");

dlerror();

char V_INTERFACE_NAME[200]="IVR_ITF_YUN_TEST";

char V_SERIAL_NUMBER[20]="13800000000";

//char V_PARAM[7024]="qwe||rtyu||iopasd||fghjko||ewue";

char V_ResultCode[100]="respCode";

char V_Field1[100]="VALUE";

char V_Field2[100]="";

char V_Field3[100]="";

char V_Field4[100]="";

char V_Field5[100]="";

char O_Result[7024]="";

HTTP_Request(

V_INTERFACE_NAME,

V_SERIAL_NUMBER,

V_PARAM,

V_ResultCode,

V_Field1,

V_Field2,

V_Field3,

V_Field4,

V_Field5,

O_Result);

dlclose(myhandle);

dlerror();

cout<<"------------------------response--------------------------------------------"<<endl;

cout<<"\n V_INTERFACE_NAME:>>>>>>>>>>>>>"<<V_INTERFACE_NAME<<endl;

cout<<"\n V_SERIAL_NUMBER:>>>>>>>>>>>>>"<<V_SERIAL_NUMBER<<endl;

cout<<"\n V_PARAM:>>>>>>>>>>>>>"<<V_PARAM<<endl;

cout<<"\n V_ResultCode:>>>>>>>>>>>>>"<<V_ResultCode<<endl;

cout<<"\n V_Field1:>>>>>>>>>>>>>"<<V_Field1<<endl;

cout<<"\n V_Field2:>>>>>>>>>>>>>"<<V_Field2<<endl;

cout<<"\n V_Field3:>>>>>>>>>>>>>"<<V_Field3<<endl;

cout<<"\n V_Field4:>>>>>>>>>>>>>"<<V_Field4<<endl;

cout<<"\n V_Field5:>>>>>>>>>>>>>"<<V_Field5<<endl;

cout<<"\n O_Result:>>>>>>>>>>>>>"<<O_Result<<endl;

}

int main(int argc,int argv[]){

Do_QHAI_UNHQ_CCScoreInfo();

return 0;

}