原文地址：https://www.cnblogs.com/nidongde/p/6252306.html

Java调用第三方dll文件的使用方法

public class OtherAdapter {
static
    {
        //System.loadLibrary("Connector");//载入需要调用的dll  Connector.dll
        System.load("d://Connector.dll");//载入dll  Connector.dll
    }
 
    //用native关键字修饰将被其它语言实现的方法
    //dll文件中对应的函数声明
    public native static int _PWLogon(String lpszDS,String lpszUser,String lpszPWD);
    //函数声明
    public native static void _PWLogout();
    public native static String _GetPWLastError();
    public native static String _GetPWFolders(long lParentFolderno);
    public native static String _GetPWDocuments(long lFolderno);
    public native static String _GetPWFiles(long lFolderno,long lDocno);
         
   //public native static String pirntStr(String msg);//函数声明
   public static void main(String[] args){
        //本地方法的调用
        int rs=_PWLogon("服务器","账号","密码");
        System.out.println("用户登录状态："+rs);
                if(rs==1)
                {
                    System.out.println("获取顶级目录："+_GetPWFolders(0));
                     
                    System.out.println("获取父子目录："+_GetPWDocuments(54));
                     
                    System.out.println("下载指定文件："+_GetPWFiles(54,2));
                     
                    _PWLogout();
                }
                else
                {
                    System.out.println("获取错误信息："+_GetPWLastError());
                }
    }
}