Java利用jacob實現打印Excel文件

package com.HeiBeiEDU.test2;

import java.io.File;

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.ComThread;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;

public class PrintDemo {

    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:實現excel打印工做
                 */
                ComThread.InitSTA();
                ActiveXComponent xl = new ActiveXComponent("Excel.Application");
                try {
                    // System.out.println("version=" +
                    // xl.getProperty("Version"));
                    // 不打開文檔
                    Dispatch.put(xl, "Visible", new Variant(false));
                    Dispatch workbooks = xl.getProperty("Workbooks").toDispatch();
                    // 打開文檔
                    Dispatch excel = Dispatch.call(workbooks, "Open", f.getAbsolutePath()).toDispatch();
                    // 橫向打印(2013/05/24)
                    // Dispatch currentSheet = Dispatch.get(excel,
                    // "ActiveSheet")
                    // .toDispatch();
                    // Dispatch pageSetup = Dispatch
                    // .get(currentSheet, "PageSetup").toDispatch();
                    // Dispatch.put(pageSetup, "Orientation", new Variant(2));
                    // 每張表都橫向打印2013-10-31
                    Dispatch sheets = Dispatch.get((Dispatch) excel, "Sheets").toDispatch();
                    // 得到幾個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");
                    }
                    // 開始打印
                    if (excel != null) {
                        // Dispatch.call(excel, "PrintOut");
                        // 增長如下三行代碼解決文件沒法刪除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 {
                    // 始終釋放資源
                    ComThread.Release();
                }
            } else if (postfixString.equalsIgnoreCase("doc") || postfixString.equalsIgnoreCase("docx")) {
                ComThread.InitSTA();
                ActiveXComponent wd = new ActiveXComponent("Word.Application");
                try {
                    // 不打開文檔
                    Dispatch.put(wd, "Visible", new Variant(false));
                    Dispatch document = wd.getProperty("Documents").toDispatch();
                    // 打開文檔
                    Dispatch doc = Dispatch
                            .invoke(document, "Open", Dispatch.Method, new Object[] { f.getAbsolutePath() }, new int[1])
                            .toDispatch();
                    // 開始打印
                    if (doc != null) {
                        Dispatch.call(doc, "PrintOut");
                        // 增長如下三行代碼解決文件沒法刪除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 {
                    // 始終釋放資源
                    ComThread.Release();
                }
            } else {
                return false;
            }
        } else {
            return false;
        }
    }
    public static void main(String[] args) {
        PrintDemo.printOfficeFile(new File("hehe.xls"));
    }
}