java实现word,ppt,excel,jpg转pdf

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.pdf.PdfWriter;

public class Word2Pdf {

static final int wdDoNotSaveChanges = 0;// 不保存待定的更改。
static final int wdFormatPDF = 17;// word转PDF 格式
static final int ppSaveAsPDF = 32;// ppt 转PDF 格式

public static void main(String[] args) throws IOException {
String source1 = "e:\\test.doc";
String source2 = "e:\\asd.xlsx";
String source3 = "e:\\aa.ppt";
String target1 = "e:\\test1.pdf";
String target2 = "e:\\test2.pdf";
String target3 = "e:\\test3.pdf";

Word2Pdf pdf = new Word2Pdf();
//  pdf.word2pdf(source1, target1);
//  pdf.excel2pdf(source2, target2);
//  pdf.ppt2pdf(source3, target3);
//  pdf.imgToPdf("e:/12345.jpg","e:/xu.pdf");
}

public void word2pdf(String source,String target){
System.out.println("启动Word");
long start = System.currentTimeMillis();
ActiveXComponent app = null;
try {
app = new ActiveXComponent("Word.Application");
app.setProperty("Visible", false);

Dispatch docs = app.getProperty("Documents").toDispatch();
System.out.println("打开文档" + source);
Dispatch doc = Dispatch.call(docs,//
"Open", //
source,// FileName
false,// ConfirmConversions
true // ReadOnly
).toDispatch();

System.out.println("转换文档到PDF " + target);
File tofile = new File(target);
if (tofile.exists()) {
tofile.delete();
}
Dispatch.call(doc,//
"SaveAs", //
target, // FileName
wdFormatPDF);

Dispatch.call(doc, "Close", false);
long end = System.currentTimeMillis();
System.out.println("转换完成..用时：" + (end - start) + "ms.");
} catch (Exception e) {
System.out.println("========Error:文档转换失败：" + e.getMessage());
} finally {
if (app != null)
app.invoke("Quit", wdDoNotSaveChanges);
}
}

public void ppt2pdf(String source,String target){
System.out.println("启动PPT");
long start = System.currentTimeMillis();
ActiveXComponent app = null;
try {
app = new ActiveXComponent("Powerpoint.Application");
Dispatch presentations = app.getProperty("Presentations").toDispatch();
System.out.println("打开文档" + source);
Dispatch presentation = Dispatch.call(presentations,//
"Open",
source,// FileName
true,// ReadOnly
true,// Untitled 指定文件是否有标题。
false // WithWindow 指定文件是否可见。
).toDispatch();

System.out.println("转换文档到PDF " + target);
File tofile = new File(target);
if (tofile.exists()) {
tofile.delete();
}
Dispatch.call(presentation,//
"SaveAs", //
target, // FileName
ppSaveAsPDF);

Dispatch.call(presentation, "Close");
long end = System.currentTimeMillis();
System.out.println("转换完成..用时：" + (end - start) + "ms.");
} catch (Exception e) {
System.out.println("========Error:文档转换失败：" + e.getMessage());
} finally {
if (app != null) app.invoke("Quit");
}
}

public void excel2pdf(String source, String target) {
System.out.println("启动Excel");
long start = System.currentTimeMillis();
ActiveXComponent app = new ActiveXComponent("Excel.Application"); // 启动excel(Excel.Application)
try {
app.setProperty("Visible", false);
Dispatch workbooks = app.getProperty("Workbooks").toDispatch();
System.out.println("打开文档" + source);
Dispatch workbook = Dispatch.invoke(workbooks, "Open", Dispatch.Method, new Object[]{source, new Variant(false),new Variant(false)}, new int[3]).toDispatch();
Dispatch.invoke(workbook, "SaveAs", Dispatch.Method, new Object[] {
target, new Variant(57), new Variant(false),
new Variant(57), new Variant(57), new Variant(false),
new Variant(true), new Variant(57), new Variant(true),
new Variant(true), new Variant(true) }, new int[1]);
Variant f = new Variant(false);
System.out.println("转换文档到PDF " + target);
Dispatch.call(workbook, "Close", f);
long end = System.currentTimeMillis();
System.out.println("转换完成..用时：" + (end - start) + "ms.");
} catch (Exception e) {
System.out.println("========Error:文档转换失败：" + e.getMessage());
}finally {
if (app != null){
app.invoke("Quit", new Variant[] {});
}
}
}

public boolean imgToPdf(String imgFilePath, String pdfFilePath)throws IOException {
File file=new File(imgFilePath);
if(file.exists()){
Document document = new Document();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(pdfFilePath);
PdfWriter.getInstance(document, fos);

// 添加PDF文档的某些信息，比如作者，主题等等
document.addAuthor("arui");
document.addSubject("test pdf.");
// 设置文档的大小
document.setPageSize(PageSize.A4);
// 打开文档
document.open();
// 写入一段文字
//document.add(new Paragraph("JUST TEST ..."));
// 读取一个图片
Image image = Image.getInstance(imgFilePath);
float imageHeight=image.getScaledHeight();
float imageWidth=image.getScaledWidth();
int i=0;
while(imageHeight>500||imageWidth>500){
image.scalePercent(100-i);
i++;
imageHeight=image.getScaledHeight();
imageWidth=image.getScaledWidth();
System.out.println("imageHeight->"+imageHeight);
System.out.println("imageWidth->"+imageWidth);
}

image.setAlignment(Image.ALIGN_CENTER);
//	      //设置图片的绝对位置
// image.setAbsolutePosition(0, 0);
// image.scaleAbsolute(500, 400);
// 插入一个图片
document.add(image);
} catch (DocumentException de) {
System.out.println(de.getMessage());
} catch (IOException ioe) {
System.out.println(ioe.getMessage());
}
document.close();
fos.flush();
fos.close();
return true;
}else{
return false;
}
}
}