java jacob调用打印，word，excel横向打印

 public static boolean printOfficeFile(File f) {  if (f != null && f.exists()) {   String fileNameString = f.getName();   String postfixString = Utils.getPostfix(fileNameString);   if (postfixString.equalsIgnoreCase("xls")     || postfixString.equalsIgnoreCase("xlsx")) {    /**     * 功能:实现excel打印工作     */    ComThread.InitSTA();    ActiveXComponent xl = new ActiveXComponent("Excel.Application");    try {     // System.out.println("version=" +     // xl.getProperty("Version"));     // 不打开文档     Dispatch.put(xl, "Visible", new Variant(false));     Dispatch workbooks = xl.getProperty("Workbooks")       .toDispatch();     // 打开文档     Dispatch excel = Dispatch.call(workbooks, "Open",       f.getAbsolutePath()).toDispatch();     // 横向打印(2013/05/24)//     Dispatch currentSheet = Dispatch.get(excel, "ActiveSheet")//       .toDispatch();//     Dispatch pageSetup = Dispatch//       .get(currentSheet, "PageSetup").toDispatch();//     Dispatch.put(pageSetup, "Orientation", new Variant(2));     //每张表都横向打印2013-10-31     Dispatch sheets = Dispatch.get((Dispatch) excel, "Sheets")       .toDispatch();     // 获得几个sheet     int count = Dispatch.get(sheets, "Count").getInt();//     System.out.println(count);     for (int j = 1; j <=count; j++) {      Dispatch sheet = Dispatch.invoke(sheets, "Item",        Dispatch.Get, new Object[] { new Integer(j) },        new int[1]).toDispatch();      Dispatch pageSetup = Dispatch.get(sheet, "PageSetup").toDispatch();      Dispatch.put(pageSetup, "Orientation", new Variant(2));      Dispatch.call(sheet, "PrintOut");     }     // 开始打印     if (excel != null) {      //Dispatch.call(excel, "PrintOut");      //增加以下三行代码解决文件无法删除bug      Dispatch.call(excel, "save");      Dispatch.call(excel,  "Close" ,  new  Variant(true));      excel=null;     }     xl.invoke("Quit", new Variant[] {});     xl=null;     return true;    } catch (Exception e) {     e.printStackTrace();     return false;    } finally {     // 始终释放资源     ComThread.Release();    }   } else if (postfixString.equalsIgnoreCase("doc")     || postfixString.equalsIgnoreCase("docx")) {    ComThread.InitSTA();    ActiveXComponent wd = new ActiveXComponent("Word.Application");    try {     // 不打开文档     Dispatch.put(wd, "Visible", new Variant(false));     Dispatch document = wd.getProperty("Documents")       .toDispatch();     // 打开文档     Dispatch doc = Dispatch.invoke(document, "Open",       Dispatch.Method, new Object[] { f.getAbsolutePath() },       new int[1]).toDispatch();     // 开始打印     if (doc != null) {      Dispatch.call(doc, "PrintOut");      //增加以下三行代码解决文件无法删除bug      Dispatch.call(doc, "save");      Dispatch.call(doc,  "Close" ,  new  Variant(true));      doc=null;     }     wd.invoke("Quit", new Variant[] {});     wd=null;     return true;    } catch (Exception e) {     e.printStackTrace();     return false;    } finally {     // 始终释放资源     ComThread.Release();    }   } else {    return false;   }  } else {   return false;  } }