之前项目上做在线浏览的时候做的，不过后来因为某些原因，没用
Word、txt亲测无误，PPT有错没调试，Excel可以转换但是转换后格式有问题
用jacob转换PDF，用pdf.js在线浏览PDF
jacob，以及pdf.js下载地址（可以自行网上百度）：
public static String pdf(String fileid)
{
String filename = null;
String realfilename = null;
String sourcepath = null;
String inFilePath = sourcepath + realfilename;
String[] name = filename.split("[.]");
filename = name[0].replaceAll("[^0-9a-zA-Z\\u4e00-\\u9fa5]", "");
filename = getFilePinyin(filename);
System.out.println(inFilePath);
String newfilename = filename + ".pdf";
String outFilePath = sourcepath.replaceAll("\\\\", "/") + "pdf/" +
newfilename;
File createPath = new File(sourcepath + "\\pdf");
if (!createPath.isDirectory()) {
createPath.mkdir();
}
File file = new File(outFilePath);
if (!file.exists()) {
System.out.println("pdf文件不存在");
System.out.println("outFilePath:" + outFilePath);
inFilePath = inFilePath.replaceAll("\\\\", "/");
convert2PDF(inFilePath, outFilePath);
}
return newfilename;
}//获取文件类型
public static String getFileSufix(String fileName)
{
int splitIndex = fileName.lastIndexOf(".");
return fileName.substring(splitIndex + 1);
}
//将文件名装换为拼音，因为pdf.js无法识别中文
public static String getFilePinyin(String fileName)
{
HanyuPinyinOutputFormat t3 = new HanyuPinyinOutputFormat();
t3.setCaseType(HanyuPinyinCaseType.LOWERCASE);
t3.setToneType(HanyuPinyinToneType.WITHOUT_TONE);
t3.setVCharType(HanyuPinyinVCharType.WITH_V);
StringBuffer sb = new StringBuffer();
for (int i = 0; i < fileName.length(); i++) {
if (Character.toString(fileName.charAt(i)).matches(
"[\\u4E00-\\u9FA5]+")) {
try {
sb.append(net.sourceforge.pinyin4j.PinyinHelper.toHanyuPinyinStringArray(fileName
.charAt(i), t3)[
0]);
}
catch (BadHanyuPinyinOutputFormatCombination e) {
e.printStackTrace();
}
}
else
{
sb.append(fileName.charAt(i));
}
}
fileName = sb.toString();
return fileName;
}
public static void convert2PDF(String inputFile, String pdfFile) //判断什么类型跳转不同的方法
{
String kind = getFileSufix(inputFile);
File file = new File(inputFile);
if (!file.exists()) {
System.out.println("文件不存在");
}
if (kind.equals("pdf")) {
File file1 = new File(inputFile);
File file2 = new File(pdfFile);
try {
System.out.println("pdf");
forChannel(file1, file2);
}
catch (Exception e) {
e.printStackTrace();
}
}
if ((kind.equals("doc")) || (kind.equals("docx")) || (kind.equals("txt")) ||
(kind.equals("wps"))) {
System.out.println("doc");
word2PDF(inputFile, pdfFile);
} else if ((kind.equals("ppt")) || (kind.equals("pptx"))) {
ppt2PDF(inputFile, pdfFile);
} else if ((kind.equals("xls")) || (kind.equals("xlsx"))) {
Ex2PDF(inputFile, pdfFile);
}
}
//Word装换pdf
public static void word2PDF(String inFilePath, String outFilePath)
{
ActiveXComponent app = null;
System.out.println("开始转换...");
long start = System.currentTimeMillis();
System.out.println("开始时间：" + start);
try {
System.out.println("进入try");
System.out.println("开始加载组件");
app = new ActiveXComponent("Word.Application");
System.out.println("加载组件完毕");
Dispatch documents = app.getProperty("Documents").toDispatch();
System.out.println("打开文件: " + inFilePath);
Dispatch document = Dispatch.call(documents, "Open", inFilePath,
Boolean.valueOf(false), Boolean.valueOf(true)).toDispatch();
File target = new File(outFilePath);
if (target.exists()) {
target.delete();
}
System.out.println("另存为: " + outFilePath);
Dispatch.call(document, "SaveAs", outFilePath, Integer.valueOf(17));
Dispatch.call(document, "Close", Boolean.valueOf(false));
long end = System.currentTimeMillis();
System.out.println("转换成功，用时：" + (end - start) + "ms");
} catch (Exception e) {
System.out.println("转换失败" + e.getMessage());
}
finally {
app.invoke("Quit", 0);
}
}
//将中文名的PDF另存为拼音名的pdf,因为pdf.js无法识别中文
public static long forChannel(File f1, File f2)
throws Exception
{
long time = new Date().getTime();
int length = 2097152;
System.out.println("length");
FileInputStream in = new FileInputStream(f1);
FileOutputStream out = new FileOutputStream(f2);
FileChannel inC = in.getChannel();
FileChannel outC = out.getChannel();
ByteBuffer b = null;
while (true) {
if (inC.position() == inC.size()) {
inC.close();
outC.close();
return new Date().getTime() - time;
}
if (inC.size() - inC.position() < length)
length = (int)(inC.size() - inC.position());
else
length = 2097152;
b = ByteBuffer.allocateDirect(length);
inC.read(b);
b.flip();
outC.write(b);
outC.force(false);
}
}
//Excel装换PDF，格式有问题，列太多打印不开会分到好几页
public static String Ex2PDF(String inFilePath, String outFilePath)
{
ComThread.InitSTA(true);
System.out.println("开始转换...");
long start = System.currentTimeMillis();
System.out.println(start);
ActiveXComponent ax = new ActiveXComponent("Excel.Application");
try {
ax.setProperty("Visible", new Variant(false));
ax.setProperty("AutomationSecurity", new Variant(3));
Dispatch excels = ax.getProperty("Workbooks").toDispatch();
Dispatch excel = Dispatch.invoke(
excels,
"Open",
1,
new Object[] { inFilePath, new Variant(false),
new Variant(false) }, new int[9]).toDispatch();
Dispatch.invoke(excel, "ExportAsFixedFormat", 1,
new Object[] { new Variant(0),
outFilePath, new Variant(0) },
new int[1]);
Dispatch.call(excel, "Close", new Variant(false));
long end = System.currentTimeMillis();
System.out.println(end);
System.out.println("转换成功，用时：" + (end - start) + "ms");
if (ax != null) {
ax.invoke("Quit", new Variant[0]);
ax = null;
}
ComThread.Release();
return ""; } catch (Exception es) {
}
return es.toString();
}
//ppt,报错可能缺少东西没有调试
public static void ppt2PDF(String inputFile, String pdfFile)
{
ActiveXComponent app = null;
Dispatch ppt = null;
try {
ComThread.InitSTA();
app = new ActiveXComponent("PowerPoint.Application");
Dispatch ppts = app.getProperty("Presentations").toDispatch();
ppt = Dispatch.call(ppts, "Open", inputFile, Boolean.valueOf(true),
Boolean.valueOf(true),
Boolean.valueOf(false))
.toDispatch();
Dispatch.call(ppt, "SaveAs", pdfFile, Integer.valueOf(32));
} catch (ComFailException e) {
System.out.println(e.getMessage());
} catch (Exception localException) {
}
finally {
if (ppt != null) {
Dispatch.call(ppt, "Close");
}
if (app != null) {
app.invoke("Quit");
}
ComThread.Release();
}
}