大家好！我是小尋
如果你想寫一個JAVA代碼，其中需要調(diào)用JACOB提供的功能，而你還是新手，也許篇文章會大大降低你的花費時間。
我將一個關(guān)于JACOB的代碼分成下面幾個步驟：
1) ActiveXComponent ax = new ActiveXComponent("a1");//構(gòu)建ActiveX組件實例
其中的a1的值和你需要調(diào)用的ActiveX控件有關(guān)
|
MS控件名
|
a1的值
|
|
InternetExplorer
|
InternetExplorer.Application
|
|
Excel
|
Excel.Application
|
|
Word
|
Word.Application
|
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Powerpoint
|
Powerpoint.Application
|
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vb/java Script
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ScriptControl
|
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windows media Player
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WMPlayer.OCX
|
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Outlook
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Outlook.Application
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Visio
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Visio.Application
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DAO
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DAO.PrivateDBEngine.35
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MultiFace
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MultiFace.Face
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2) Dispatch ds = ax.getObject(). toDispatch();//獲取Dispatch對象，我們可以把每個Dispatch對象看成是對Activex控件的一個操作，這一步是獲得該ActiveX控件的控制權(quán)。
（注：淺析JACOB 中提到過Variant類，這里的ax.getObject()便是獲得該對象，我們將其轉(zhuǎn)化為任何對象（類型））
3) Dispatch ds1 = Dispatch.get(ds, "a2").toDispatch(); //獲取該ActiveX對象數(shù)據(jù)結(jié)構(gòu)中的a2屬性
4) Dispatch d2 = Dispatch.invoke(ds1, "a3", a4, a5, a6).toDispatch(); //功能調(diào)用，對ActiveX對象ds1的a3屬性執(zhí)行a4(Dispatch.Put\Dispatch.Get等)操作，執(zhí)行后a3的值為a5，a6為錯誤參數(shù)碼常定義為new int[1]，
（注：call、get和put方法都是通過該方法實現(xiàn)的)
5) Dispatch ds2 = Dispatch.put(ds, "a7","a8").toDispatch();//將ActiveX對象ds的屬性a4的值設(shè)置為a5，該方法返回類型同get一樣
6) Dispatch ds3 = Dispatch.call(ds1, "a9", a10);//該方法和get方法非常類似，他是把a9屬性賦值給a10
Ok其他的方法我覺得很容易理解，這里就不再做描述了。
下面是一個關(guān)于excel的代碼，也許對您的進一步自學(xué)，會有好處
import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.ComThread;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;
public class ExcelDispatchTest 
{
public static void main(String[] args) {
ComThread.InitSTA();
ActiveXComponent xl = new ActiveXComponent("Excel.Application");
try {
System.out.println("version=" + xl.getProperty("Version"));
System.out.println("version=" + Dispatch.get(xl, "Version"));
Dispatch.put(xl, "Visible", new Variant(true));
Dispatch workbooks = xl.getProperty("Workbooks").toDispatch();
Dispatch workbook = Dispatch.get(workbooks, "Add").toDispatch();
Dispatch sheet = Dispatch.get(workbook, "ActiveSheet").toDispatch();
Dispatch a1 = Dispatch.invoke(sheet, "Range", Dispatch.Get,
new Object[] { "A1" }, new int[1]).toDispatch();
Dispatch a2 = Dispatch.invoke(sheet, "Range", Dispatch.Get,
new Object[] { "A2" }, new int[1]).toDispatch();
Dispatch.put(a1, "Value", "123.456");
Dispatch.put(a2, "Formula", "=A1*2");
System.out.println("a1 from excel:" + Dispatch.get(a1, "Value"));
System.out.println("a2 from excel:" + Dispatch.get(a2, "Value"));
Variant f = new Variant(false);
Dispatch.call(workbook, "Close", f);
} catch (Exception e) {
e.printStackTrace();
} finally {
xl.invoke("Quit", new Variant[] {});
ComThread.Release();
}
}
