java调用jacob生成pdf，word，excel横向

    /*
     * 传进一个office文件的byte[]以及后缀，生成一个pdf文件的byte[]
     */
    public byte[] jacob_Office2Pdf(byte[] srcFileBytes, String postfix) {
        if (srcFileBytes == null || srcFileBytes.length == 0
                || postfix.equals("") || postfix == null) {
            return null;
        } else {
            String officeTmplPath = Consts.getTempPath()
                    + UUID.randomUUID().toString() + "." + postfix;
            System.out.println(officeTmplPath);
            String pdfTmplPath = generateDefaultOutputFilePath(officeTmplPath);
            System.out.println(pdfTmplPath);
            FileOutputStream outf = null;
            BufferedOutputStream bufferout = null;
            try {
                outf = new FileOutputStream(officeTmplPath);
                bufferout = new BufferedOutputStream(outf);
                bufferout.write(srcFileBytes);
                bufferout.flush();
                bufferout.close();
                outf.close();
            } catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                return null;
            } catch (IOException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
                return null;
            }
            File f = new File(officeTmplPath);
            if (postfix.equalsIgnoreCase("doc")
                    || postfix.equalsIgnoreCase("docx")) {
                ComThread.InitSTA();
                ActiveXComponent app = new ActiveXComponent("Word.Application");
                app.setProperty("Visible", false);
                Dispatch docs = app.getProperty("Documents").toDispatch();
                Dispatch doc = Dispatch.call(docs,//
                        "Open", //
                        officeTmplPath,// FileName
                        false,// ConfirmConversions
                        true // ReadOnly
                        ).toDispatch();

                Dispatch.call(doc,//
                        "SaveAs", //
                        pdfTmplPath, // FileName
                        wdFormatPDF);
                Dispatch.call(doc, "Close", false);
                if (app != null) {
                    app.invoke("Quit", new Variant[] {});
                    app = null;
                }
                ComThread.Release();
                if (f.exists()) {
                    f.delete();
                }
                byte[] content;
                try {
                    BufferedInputStream in = new BufferedInputStream(
                            new FileInputStream(pdfTmplPath));
                    ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
                    byte[] temp = new byte[1024];
                    int size = 0;
                    while ((size = in.read(temp)) != -1) {
                        out.write(temp, 0, size);
                    }
                    in.close();
                    content = out.toByteArray();
                    out.close();
                    File pdfFile = new File(pdfTmplPath);
                    if (pdfFile.exists()) {
                        pdfFile.delete();
                    }
                    return content;
                } catch (FileNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    return null;
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    return null;
                }
            } else if (postfix.equalsIgnoreCase("xls")
                    || postfix.equalsIgnoreCase("xlsx")) {
                ComThread.InitSTA();
                ActiveXComponent app = new ActiveXComponent("Excel.Application");
                app.setProperty("Visible", new Variant(false));
                Object excels = app.getProperty("Workbooks").toDispatch();
                Object excel = Dispatch.invoke(
                        (Dispatch) excels,
                        "Open",
                        Dispatch.Method,
                        new Object[] { officeTmplPath, new Variant(false),
                                new Variant(true) }, new int[1]).toDispatch();
                // new Object[] { officeTmplPath, new Variant(false),
                // new Variant(false) }, new int[9]).toDispatch();
                // 横向打印(2013/05/24)
                // 获取activate表格
                Dispatch currentSheet = Dispatch.get((Dispatch) excel,
                        "ActiveSheet").toDispatch();
                Dispatch pageSetup = Dispatch.get(currentSheet, "PageSetup")
                        .toDispatch();
                Dispatch.put(pageSetup, "Orientation", new Variant(2));
                // Dispatch.invoke((Dispatch)excel, "SaveAs", Dispatch.Method,
                // new Object[] {
                // pdfTmplPath, new Variant(57), new Variant(false),
                // new Variant(57), new Variant(57), new Variant(false),
                // new Variant(true), new Variant(57), new Variant(false),
                // new Variant(true), new Variant(false) }, new int[1]);
                try {
                    //如果第一个sheet为空则会抛出异常
                    Dispatch.call(currentSheet, "SaveAs", pdfTmplPath,
                            new Variant(57));
                } catch (Exception e1) {
                    // TODO Auto-generated catch block
                    //e1.printStackTrace();
                    //自动调用第二个sheet
                    Dispatch sheets = Dispatch.get((Dispatch) excel, "Sheets")
                            .toDispatch();
                    // 获得几个sheet
//                    int count = Dispatch.get(sheets, "Count").getInt();
//                    System.out.println(count);
                    Dispatch sheet = Dispatch.invoke(sheets, "Item",
                            Dispatch.Get, new Object[] { new Integer(2) },
                            new int[1]).toDispatch();
                    pageSetup = Dispatch.get(sheet, "PageSetup").toDispatch();
                    Dispatch.put(pageSetup, "Orientation", new Variant(2));
                    Dispatch.call(sheet, "SaveAs", pdfTmplPath, new Variant(57));
                    Dispatch.call((Dispatch) excel, "Close", new Variant(false));
                    byte[] content;
                    try {
                        BufferedInputStream in = new BufferedInputStream(
                                new FileInputStream(pdfTmplPath));
                        ByteArrayOutputStream out = new ByteArrayOutputStream(
                                1024);
                        byte[] temp = new byte[1024];
                        int size = 0;
                        while ((size = in.read(temp)) != -1) {
                            out.write(temp, 0, size);
                        }
                        in.close();
                        content = out.toByteArray();
                        out.close();
                        File pdfFile = new File(pdfTmplPath);
                        if (pdfFile.exists()) {
                            pdfFile.delete();
                        }
                        return content;
                    } catch (FileNotFoundException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                        return null;
                    } catch (IOException e) {
                        // TODO Auto-generated catch block
                        e.printStackTrace();
                        return null;
                    }
                } finally {
                    if (app != null) {
                        app.invoke("Quit", new Variant[] {});
                        app = null;
                    }
                    ComThread.Release();
                    if (f.exists()) {
                        f.delete();
                    }
                }
                Dispatch.call((Dispatch) excel, "Close", new Variant(false));
                byte[] content;
                try {
                    BufferedInputStream in = new BufferedInputStream(
                            new FileInputStream(pdfTmplPath));
                    ByteArrayOutputStream out = new ByteArrayOutputStream(1024);
                    byte[] temp = new byte[1024];
                    int size = 0;
                    while ((size = in.read(temp)) != -1) {
                        out.write(temp, 0, size);
                    }
                    in.close();
                    content = out.toByteArray();
                    out.close();
                    File pdfFile = new File(pdfTmplPath);
                    if (pdfFile.exists()) {
                        pdfFile.delete();
                    }
                    return content;
                } catch (FileNotFoundException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    return null;
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                    return null;
                }
            } else {
                if (f.exists()) {
                    f.delete();
                }
                return null;
            }
        }

    }