原文 http://blog.csdn.net/shendl/archive/2008/12/26/3599854.aspx

贴上 JNA—JNI 终结者 、 深入解析 JNA— 模拟 C 语言结构体 两篇文章的完整源代码

 

C 语言源代码：

 

头文件

 

#define MYLIBAPI  extern    "C"      __declspec ( dllexport ) 

 

MYLIBAPI void say( wchar_t * pValue);

 

  struct UserStruct{

   long id;

   wchar_t *  name;

   int age;

 

};

 

MYLIBAPI void sayUser(UserStruct* pUserStruct);

 

struct CompanyStruct{

    long id;

   wchar_t *  name;

//  UserStruct*  users[100];

   UserStruct   users[100];

   int count;

 

};

struct CompanyStruct2{

    long id;

   wchar_t *  name;

  UserStruct*  users[100];

  // UserStruct   users[100];

   int count;

 

};

 

MYLIBAPI void sayCompany(CompanyStruct* pCompanyStruct);

MYLIBAPI void sayCompany2(CompanyStruct2* pCompanyStruct);

 

 

源文件

#include "stdafx.h"

#include <locale.h>

 

#include <iostream>

#include "Out.h"

 

void   say( wchar_t * pValue){

     std::wcout.imbue(std::locale( "chs" ));

 

     std::wcout<<L "上帝说：" <<pValue<<std::endl;

}

 

void sayUser(UserStruct* pUserStruct){

   std::wcout.imbue(std::locale( "chs" ));

 

   std::wcout<<L "ID:" <<pUserStruct->id<<std::endl;

   std::wcout<<L "姓名：" <<pUserStruct->name<<std::endl;

    std::wcout<<L "年龄：" <<pUserStruct->age<<std::endl;

 

}

 

void sayCompany(CompanyStruct* pCompanyStruct){

 

  std::wcout.imbue(std::locale( "chs" ));

 

   std::wcout<<L "ID:" <<pCompanyStruct->id<<std::endl;

   std::wcout<<L "公司名称：" <<pCompanyStruct->name<<std::endl;

    std::wcout<<L "员工总数：" <<pCompanyStruct->count<<std::endl;

      

     for ( int i=0;i<pCompanyStruct->count;i++){

        sayUser(&pCompanyStruct->users[i]);

    

     }

  

 

 

}

 

void sayCompany2(CompanyStruct2* pCompanyStruct){

    std::wcout.imbue(std::locale( "chs" ));

 

   std::wcout<<L "ID:" <<pCompanyStruct->id<<std::endl;

   std::wcout<<L "公司名称：" <<pCompanyStruct->name<<std::endl;

    std::wcout<<L "员工总数：" <<pCompanyStruct->count<<std::endl;

      

     for ( int i=0;i<pCompanyStruct->count;i++){

        sayUser(pCompanyStruct->users[i]);

    

     }

 

 

}

 

Java 源文件：

请先把JNA.jar 导入classpath 。

 

 

package com.google.p.shendl.jna.net;

 

import com.google.p.shendl.jna.net.TestDll1Service.TestDll1.CompanyStruct;

import com.google.p.shendl.jna.net.TestDll1Service.TestDll1.CompanyStruct2;

import com.google.p.shendl.jna.net.TestDll1Service.TestDll1.UserStruct;

import com.sun.jna.Library;

import com.sun.jna.Native;

import com.sun.jna.NativeLong;

import com.sun.jna.Structure;

import com.sun.jna.WString;

 

/**

  * @author 沈东良 Edward Shen shendl_s@hotmail .com

  * 2008 - 11 - 23 下午 05:07:14

  *TestDll1.dll

  */

public class TestDll1Service {

    public interface TestDll1 extends Library {

       /**

         * 当前路径是在项目下，而不是 bin 输出目录下。

         */

       TestDll1 INSTANCE = (TestDll1)Native.loadLibrary ( "TestDll1" , TestDll1. class );

      

      

       public void say(WString value);

       /*

         * 定义一个类，模拟 C 语言的结构

         * */

       public static class UserStruct extends Structure{

          

             public static class ByReference extends UserStruct implements Structure.ByReference { }

             public static class ByValue extends UserStruct implements Structure.ByValue

  { }

 

           public NativeLong id ;

           public WString name ;

           public int age ;

       }

      

       public void sayUser(UserStruct.ByReference struct);

      

       public static class CompanyStruct extends Structure{

             public static class ByReference extends CompanyStruct implements Structure.ByReference { }

           public NativeLong id ;

           public WString  name ;

           //public UserStruct[] users;

           public UserStruct.ByValue[] users ;

           //public UserStruct.ByValue[] users=new UserStruct.ByValue[100];

           public int count ;

          

          

       }

      

      public    void sayCompany(CompanyStruct.ByReference pCompanyStruct);

      public static class CompanyStruct2 extends Structure{

         public static class ByReference extends CompanyStruct2 implements Structure.ByReference { }

           public NativeLong id ;

           public WString  name ;

      

           public UserStruct.ByReference[] users = new UserStruct.ByReference[100];

           public int count ;

          

          

       }

      public void sayCompany2(CompanyStruct2.ByReference  pCompanyStruct);

    }

    /**

      *

      */

    public TestDll1Service() {

       // TODO Auto-generated constructor stub

    }

 

    /**

      * @param args

      */

    public static void main(String[] args) {

       // TODO Auto-generated method stub

     

       TestDll1. INSTANCE .say( new WString( "Hello World!" ));

       System. out .println( "HHEEH 我我们无法万恶 " );

       UserStruct.ByReference userStruct= new UserStruct.ByReference();

       userStruct. id = new NativeLong(100);

       userStruct. age =30;

       userStruct. name = new WString( " 沈东良 " );

       TestDll1. INSTANCE .sayUser(userStruct);

       System. out .println( "AAAAAAAAAAAAAAAAAAAAAAAAAAA" );

       CompanyStruct.ByReference companyStruct= new CompanyStruct.ByReference();

       companyStruct. id = new NativeLong(1);

       companyStruct. name = new font-size: 10pt; color: black; font-family: