Eclipse开发：在Java中调用ActiveX控件（OCX控件）示例

来源：互联网发布：windows 10怎么用编辑：程序博客网时间：2024/04/30 21:07

本范例以使用来电显示ActiveX控件JDComport.ocx为例，说明怎样在Java中集成ActiveX控件。

1、开发环境：Eclipse（Java主流开发工具）
（1）需要用到SWT、Visual Editor插件；
（2）Eclipse软件及其相关插件可到 http://www.eclipse.org/downloads/ 下载。

2、需要用到JDComport.ocx
   （1）JDComport.ocx是高深商开发的来电显示ActiveX控件，下载地址：http://www.kosen.com.cn/news/admin/attachments/month_0907/JDComPort.rar
   （2）JDComport.ocx使用详情请参考：http://www.kosen.com.cn/news/showatc.asp?id=123
   （3）在开发之前请先注册，可直接运行REGJD.bat进行注册。

3、Java调用ActiveX控件的关键是使用OleFrame、OleControlSite、OleAutomation调用OCX控件，invoke调用控件中的函数，addEventListener调用控件中的事件。

OLE调用的关键代码：

            Shell shell = new Shell();
            _frame = new OleFrame(shell, SWT.NONE);
            _site = new OleControlSite(_frame, SWT.NONE, "JDCompPort.JDComponent");
            _auto = new OleAutomation(_site);
    调用控件中的函数：

int[] ids = _auto.getIDsOfNames(new String[]{methodName});
Variant rtnv = _auto.invoke(ids[0]);

调用控件中的事件（Event）：

_site.addEventListener(int eventID, OleListener listener);

            jdc.addEventListener(jdc.idOnOpen, new OleListener(){
                @Override
                public void handleEvent(OleEvent event) {
                     String key = jdc.extractEventArgument("VT_BSTR", event.arguments[0].toString());
                     String devid = jdc.extractEventArgument("VT_BSTR", event.arguments[1].toString());
                   textArea.append("/r/n"+key+" "+devid);
                }
            });

4、JDComport.java封装了JDComport.ocx最重要的函数及事件，代码如下：

import org.eclipse.swt.SWT;
import org.eclipse.swt.ole.win32.OleAutomation;
import org.eclipse.swt.ole.win32.OleControlSite;
import org.eclipse.swt.ole.win32.OleFrame;
import org.eclipse.swt.ole.win32.OleListener;
import org.eclipse.swt.ole.win32.Variant;
import org.eclipse.swt.widgets.Shell;

public class JDComport {

    private OleFrame _frame;
    private OleControlSite _site;
    private OleAutomation _auto;

    public int idOnOpen=1;
    public int idOnClose=2;
    public int idOnRead=3;
    public int idOnKeyPress=4;
    public int idOnWaveIn=5;

    JDComport(){
            Shell shell = new Shell();
            _frame = new OleFrame(shell, SWT.NONE);
            _site = new OleControlSite(_frame, SWT.NONE, "JDCompPort.JDComponent");
            _auto = new OleAutomation(_site);
    }

   public int getID(String name){
        try {
            int[] ids = _auto.getIDsOfNames(new String[]{name});
            if(ids.length>=0)
                return ids[0];
        } catch (RuntimeException e) {
            e.printStackTrace();
        }
        return -1;
    }

    public Variant execute(String methodName){
        int mid = getID(methodName);
        if(mid<0)
            return null;

        Variant rtnv = _auto.invoke(mid);
        return rtnv;
    }

    public void addEventListener(int eventID, OleListener listener){
        _site.addEventListener(eventID, listener);
    }

    public void removeEventListener(int eventID, OleListener listener){
        _site.removeEventListener(eventID, listener);
    }

    public void openComport()
    {
        execute("Open");
    }

    public void setupComport()
    {
        execute("SetupPorts");
    }

    public void setJDState()
    {
        execute("SetSate");
    }

    //VT_BSTR{38259081} -> 39259081
    public String extractEventArgument(String pres, String argu)
    {
       if(argu.startsWith(pres))
           return argu.substring(pres.length()+1, argu.length()-1);
       else
           return argu;
    }
}

5、VETest.java使用JDComport.ocx实现如下功能：
   （1）设置来电显示盒的计算机连接端口，可自动查找，只需在第一次使用（或更换了USB插口）时调用；
   （2）设置来电显示参数；
   （3）按电话键时，计算机自动显示按键内容；
   （4）当有电话打入时，自动显示来电号码、时间等内容；

（5）VETest.java代码如下，特别请注意addEventListener()的使用。

import java.text.SimpleDateFormat;
import java.util.Calendar;

import org.eclipse.swt.SWT;
import org.eclipse.swt.graphics.Point;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.ole.win32.OleEvent;
import org.eclipse.swt.ole.win32.OleListener;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.swt.widgets.Text;

import com.sun.org.apache.xerces.internal.impl.xpath.regex.ParseException;
import org.eclipse.swt.graphics.Font;

/**
* @author chen lx
*
*/
public class VETest {

private Shell sShell = null; // @jve:decl-index=0:visual-constraint="107,15"
private Button button2 = null;
private Button button1 = null;
private Text textArea = null;
private JDComport jdc=null; // @jve:decl-index=0:

/**
* @param args
*/
public static void main(String[] args) {
  // TODO Auto-generated method stub
  /* Before this is run, be sure to set up the launch configuration (Arguments->VM Arguments)
   * for the correct SWT library path in order to run with the SWT dlls.
   * The dlls are located in the SWT plugin jar.
   * For example, on Windows the Eclipse SWT 3.1 plugin jar is:
   *       installation_directory/plugins/org.eclipse.swt.win32_3.1.0.jar
   */
  Display display = Display.getDefault();
  VETest thisClass = new VETest();
  thisClass.createSShell();
  thisClass.sShell.open();

  while (!thisClass.sShell.isDisposed()) {
   if (!display.readAndDispatch())
    display.sleep();
  }
  display.dispose();
}

/**
* This method initializes sShell
*/
private void createSShell() {
  GridData gridData = new GridData();
  gridData.horizontalSpan = 2;
  gridData.heightHint = -1;
  gridData.verticalSpan = 6;
  GridData gridData1 = new GridData();
  GridLayout gridLayout = new GridLayout();
  gridLayout.numColumns = 2;
  sShell = new Shell();
  sShell.setText("Shell");
  sShell.setMaximized(false);
  sShell.setLayout(gridLayout);
  sShell.setSize(new Point(355, 118));
  button1 = new Button(sShell, SWT.NONE);
  button1.setText("打开端口");
  button2 = new Button(sShell, SWT.NONE);
  button2.setText("端口设置");
  button2.setLayoutData(gridData1);
  textArea = new Text(sShell, SWT.MULTI | SWT.WRAP | SWT.V_SCROLL);
  textArea.setText("---------------------------------------------");
  textArea.setFont(new Font(Display.getDefault(), "宋体", 10, SWT.NORMAL));
  textArea.setLayoutData(gridData);
  button1.addMouseListener(new org.eclipse.swt.events.MouseAdapter() {
   public void mouseDown(org.eclipse.swt.events.MouseEvent e) {
    jdc.openComport();
   }
  });
  button2.addMouseListener(new org.eclipse.swt.events.MouseAdapter() {
   public void mouseDown(org.eclipse.swt.events.MouseEvent e) {
    jdc.setupComport();
   }
  });

  jdc = new JDComport();
  textArea.append("/r/n");
  jdc.addEventListener(jdc.idOnOpen, new OleListener(){
   @Override
   public void handleEvent(OleEvent event) {
    textArea.append("/r/nJD端口已打开 ");
   }
  });
  jdc.addEventListener(jdc.idOnClose, new OleListener(){
   @Override
   public void handleEvent(OleEvent event) {
    textArea.append("/r/nJD端口已关闭 ");
   }
  });
  // OnKeyPress(const key: WideString; const devid: WideString);
  jdc.addEventListener(jdc.idOnKeyPress, new OleListener(){
   @Override
   public void handleEvent(OleEvent event) {
    // TODO Auto-generated method stub
    String key = jdc.extractEventArgument("VT_BSTR", event.arguments[0].toString());
    String devid = jdc.extractEventArgument("VT_BSTR", event.arguments[1].toString());
    textArea.append("/r/n"+key+" "+devid);
   }
  });
  // OnRead(const s: WideString; t: Double; const devid: WideString; const WaveFile: WideString)
  jdc.addEventListener(jdc.idOnRead, new OleListener(){
   @Override
   public void handleEvent(OleEvent event) {
    // TODO Auto-generated method stub
    String s = jdc.extractEventArgument("VT_BSTR", event.arguments[0].toString());
    String t = jdc.extractEventArgument("VT_R8", event.arguments[1].toString());
    String devid = jdc.extractEventArgument("VT_BSTR", event.arguments[2].toString());
    String wf = jdc.extractEventArgument("VT_BSTR", event.arguments[3].toString());
    //来电时间从Double转换为日期型
    Double d=Double.valueOf(t);
    try   {
                      Calendar base = Calendar.getInstance();
                      //SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd");
                      SimpleDateFormat outFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
                      //base.setTime(format.parse("1899-12-30"));
                      base.set(1899, 11, 30, 0, 0, 0);
                      base.add(Calendar.DATE, d.intValue());
                      base.add(Calendar.MILLISECOND,(int)((d % 1) * 24 * 60 * 60 * 1000));
                      t=outFormat.format(base.getTime());
    }
    catch   (ParseException   e)   {
                      e.printStackTrace();
    }
    textArea.append("/r/n"+s+" "+t.toString()+" "+devid+" "+wf);
   }
  });
}

}