采用jacob读取并在网页中显示ppt、word、excel

下载 jacob-1.15-M3

地址http://sourceforge.net/projects/jacob-project/

开发工具 MyEclipse8.0 绿色版、Tomcat 6.0 绿色版，JDK 1.6，XP系统，J2EE项目

在MyEclipse中配置Tomcat，使用自己安装的JDK

接着配置MyEclipse 的JRE

Window---Preferences--Java---Installed JREs--选择之前配置Tomcat时加入的jdk

把jacob-1.15-M3-x86.dll 放到这目录下

C:/Program Files/Java/jdk1.6.0_10/jre/bin

把jacob.jar 放到这目录下

D:/tomcat6/lib

Jacob2Html.java 这个类是在网上找的，谁写了，我记不得了。

package jacob;

//import org.apache.commons.logging.Log;
//import org.apache.commons.logging.LogFactory;
//import com.hz.dao.NoticeDAO;
import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;
public class Jacob2Html
{
// private static final Log log = LogFactory.getLog(Jacob2Html.class);
/**
     * PowerPoint转成HTML
     * @param pptPath PowerPoint文件全路径
     * @param htmlfile 转换后HTML存放路径
    */
    public static void pptToHtml(String pptPath, String htmlPath)
    {
     ActiveXComponent offCom = new ActiveXComponent("PowerPoint.Application");
        try
        {
         offCom.setProperty("Visible", new Variant(true));
            Dispatch excels = offCom.getProperty("Presentations").toDispatch();
            Dispatch excel = Dispatch.invoke(excels,
             "Open",Dispatch.Method, new Object[] { pptPath, new Variant(false), new Variant(false) }, new int[1]).toDispatch();
            Dispatch.invoke(excel, "SaveAs", Dispatch.Method, new Object[] {
              htmlPath, new Variant(12) }, new int[1]);
            Variant f = new Variant(false);
            Dispatch.call(excel, "Close");
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
         offCom.invoke("Quit", new Variant[] {});
        }
    }


/**
     * WORD转成HTML
     * @param wordPath WORD文件全路径
     * @param htmlPath 生成的HTML存放路径
     */
    public static void wordToHtml(String wordPath, String htmlPath)
    {
     ActiveXComponent offCom = new ActiveXComponent("Word.Application");
        try
        {
         offCom.setProperty("Visible", new Variant(false));
            Dispatch wordDis = offCom.getProperty("Documents").toDispatch();
            Dispatch doc = Dispatch.invoke(wordDis,
                    "Open", Dispatch.Method, new Object[] { wordPath, new Variant(false),
                            new Variant(true) }, new int[1]).toDispatch();
            Dispatch.invoke(doc, "SaveAs", Dispatch.Method, new Object[] {
              htmlPath, new Variant(8) }, new int[1]);
            Variant f = new Variant(false);
            Dispatch.call(doc, "Close", f);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
         offCom.invoke("Quit", new Variant[] {});
        }
    }

    /**
     * EXCEL转成HTML
     * @param xlsfile EXCEL文件全路径
     * @param htmlfile 转换后HTML存放路径
     */
    public static void excelToHtml(String excelPath, String htmlPath)
    {
        ActiveXComponent offCom = new ActiveXComponent("Excel.Application");
        try
        {
         offCom.setProperty("Visible", new Variant(false));
            Dispatch excels = offCom.getProperty("Workbooks").toDispatch();
            Dispatch excel = Dispatch.invoke(excels,
             "Open",Dispatch.Method, new Object[] { excelPath, new Variant(false), new Variant(true) }, new int[1]).toDispatch();
            Dispatch.invoke(excel, "SaveAs", Dispatch.Method, new Object[] {
              htmlPath, new Variant(44) }, new int[1]);
            Variant f = new Variant(false);
            Dispatch.call(excel, "Close", f);
        }
        catch (Exception e)
        {
            e.printStackTrace();
        }
        finally
        {
         offCom.invoke("Quit", new Variant[] {});
        }
    }


    public static void main(String[] args)
{
     //excelToHtml("c:/ftc/kk.xls","c:/ftc/kk.html");
     //wordToHtml("c:/ftc/gdf.doc","c:/ftc/gdf.html");
     pptToHtml("d:/ch.ppt", "d:/ch.html");
}
}

///

//InsFile.java

package servlet;

public class InsFile {
/**
* 取得文件的后缀名
* @param filename 文件名
* @return
*/
public static String getExt(String filename){
  int index=filename.indexOf(".");
  String ext=filename.substring(index+1);
  String str="";
  if(ext.equalsIgnoreCase("doc"))
   str="doc";
  else if(ext.equalsIgnoreCase("ppt"))
   str="ppt";
  else if(ext.equalsIgnoreCase("xls"))
   str="xls";
  else if(ext.equalsIgnoreCase("pdf"))
   str="pdf";
  else if(ext.equalsIgnoreCase("txt"))
   str="txt";
  return str;
}
/**
* 去掉文件的后缀名

* @param filename 文件名
* @return
*/
public static String delExt(String filename){
  int index=filename.indexOf(".");
  String str=filename.substring(0, index);
  return str;
}
public static void main(String [] args){
  String s="adfasdf.ppt";
  String e=getExt(s);
  System.out.println("后缀名是："+e);
  System.out.println("去掉后缀名是："+delExt(s));
}

}

//ReadFileServlet .java

package servlet;
import jacob.Jacob2Html;
import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;

public class ReadFileServlet extends HttpServlet {

/**
* Constructor of the object.
*/
public ReadFileServlet() {
super();
}

/**
* Destruction of the servlet. 
*/
public void destroy() {
super.destroy(); // Just puts "destroy" string in log
// Put your code here
}

/**
* The doGet method of the servlet. 
*
* This method is called when a form has its tag value method equals to get.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doGet(HttpServletRequest request, HttpServletResponse response)
 throws ServletException, IOException {
 String tomcat=getServletContext().getRealPath("/")+"upload//";//在工程目录下建个upload文件夹
 String filename=request.getParameter("url");

 System.out.println(tomcat);
 System.out.println(filename);

 String ext=InsFile.getExt(filename);

 File file=new File(tomcat+InsFile.delExt(filename)+".html");
 boolean exist=file.exists();
 if(exist){
 RequestDispatcher requestDispatcher=request.getRequestDispatcher("/upload/"+InsFile.delExt(filename)+".html");
 requestDispatcher.forward(request,response);
 }else{
 if(ext.equalsIgnoreCase("doc")){
 Jacob2Html.wordToHtml(tomcat+filename,tomcat+InsFile.delExt(filename)+".html");
 }else if(ext.equalsIgnoreCase("ppt")){
 Jacob2Html.pptToHtml(tomcat+filename,tomcat+InsFile.delExt(filename)+".html");
System.out.println(tomcat+InsFile.delExt(filename)+".html");
 }else if(ext.equalsIgnoreCase("xls")){
 Jacob2Html.excelToHtml(tomcat+filename,tomcat+InsFile.delExt(filename)+".html");
 }
 RequestDispatcher requestDispatcher=request.getRequestDispatcher("/upload/"+InsFile.delExt(filename)+".html");
 requestDispatcher.forward(request,response);
 }

}

/**
* The doPost method of the servlet. 
*
* This method is called when a form has its tag value method equals to post.
*
* @param request the request send by the client to the server
* @param response the response send by the server to the client
* @throws ServletException if an error occurred
* @throws IOException if an error occurred
*/
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
doGet(request, response);
}

/**
* Initialization of the servlet. 
*
* @throws ServletException if an error occurs
*/
public void init() throws ServletException {
// Put your code here
}

}

//在文件夹upload中放置一个123.doc文件

<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
 <base href="<%=basePath%>">

 <title>My JSP 'index.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">

</head>

<body>
 <a href="./servlet/ReadFileServlet?url=123.doc" target="_blank">This is my JSP page. </a> 
</body>
</html>

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