轻松架起Java连接COM对象的桥梁(续)

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  继《轻松架起Java连接COM对象的桥梁》文章发表后,收到很多网友的来信,探讨关于jacob开

发的问题,这篇续文是为了解决jacob传送数组到com以及从com的提取com对修改后的数组参数。关

于jacob的使用这里不详述,请见《轻松架起Java连接COM对象的桥梁》,具体实现如下:
import com.jacob.com.*;
import com.jacob.activeX.*;

public class Exam_6
{
  public static void main(String[] args)
  {
    ActiveXComponent pp = new ActiveXComponent("PrjCOM.MyCOM");
    try {
  SafeArray sa = new SafeArray(Variant.VariantString,2);
  Variant var = new Variant();
  sa.fromStringArray(new String[]{"H","H"});
  var.putSafeArrayRef(sa);//传递数组引用地址
  //如果只是传一个数组进去,而不需要取得改动后内容的话,可以用putSafeArray方法
  Dispatch.call(pp, "Test",var);
  String[] sack= sa.toStringArray();
  System.out.println(sack[0]+"\t"+sack[1]);
    } catch (Exception e) {
      e.printStackTrace();
    }
  }
}
VB实现的Com对象如下
VERSION 1.0 CLASS
BEGIN
  MultiUse = -1  'True
  Persistable = 0  'NotPersistable
  DataBindingBehavior = 0  'vbNone
  DataSourceBehavior  = 0  'vbNone
  MTSTransactionMode  = 0  'NotAnMTSObject
END
Attribute VB_Name = "MyCOM"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = True
Attribute VB_PredeclaredId = False
Attribute VB_Exposed = True
Public Sub Test(ByRef param() As String)
ReDim param(2)
param(0) = "Hello"
param(1) = "World"
End Sub

编译执行Exam_6.java
打印 Hello World

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