使用OpenOffice实现文件在线预览

一、解决方案

方案1：

可以直接使用第三方服务，不过这个需要收费的，我在这列几个

http://www.yozodcs.com/

https://www.idocv.com/

http://www.officeweb365.com/

方案2：

服务器安装office web apps文件浏览服务器，实现文件预览，安装部署方法可自行百度

方案3：

office转Html、pdf实现在线预览文件

本文主要介绍使用openoffice开源软件实现pdf文件转换，当前的主流浏览器都是支持直接打开pdf格式文件，从而实现文件预览

二、openoffice实现文件格式转换

1.openoffice软件安装

Windows下安装openoffice:

1. 下载openoffice4安装 www.openoffice.org；
2. openoffice服务启动

安装OpenOffice成功后，您可以进入/program/目录并运行以下命令启动OpenOffice服务：

soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" -nofirststartwizard

 

linux下安装openoffice:

1. 下载Apache_OpenOffice_4.1.6_Linux_x86-64_install-rpm_zh-CN.tar.gz
2. 本人资源包放在 /opt/moudles 中, 解压后放在 /opt/softwares 中

解压 openoffice包

[root@localhost moudles]# tar -zxvf Apache_OpenOffice_4.1.6_Linux_x86-64_install-rpm_zh-CN.tar.gz  -C ../softwares/

解压之后会在 /opt/softwares 中生成 zh-CN文件夹，进入zh-CN中RPMS文件夹

[root@localhost moudles]# cd /opt/softwares/zh-CN/RPMS

运行 yum localinstall *.rpm

[root@localhost RPMS]# yum localinstall *.rpm

成功之后会在当前目录生成 desktop-integration文件夹，运行 yum localinstall 。

[root@localhost desktop-integration]# yum localinstall openoffice4.1.6-redhat-menus-4.1.6-9788.noarch. rpm

（如果上一句执行不成功，改用

           cd desktop-integration ，执行：rpm -ivh  openoffice4.1.6-redhat-menus-4.1.6-9783.noarch.rpm；

 ）

安装成功会在 /opt 目录下生成openoffice4文件夹

启动：

临时启动： 临时启动之后画面就不会动了, 不要认为是死机。只要不报错就是好现象。

[root@localhost desktop-integration]# /opt/openoffice4/program/soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" –nofirststartwizard

永久启动：

[root@localhost desktop-integration]# /opt/openoffice4/program/soffice -headless -accept="socket,host=127.0.0.1,port=8100;urp;" -nofirststartwizard &

查看是否启动成功：

[root@localhost opt]# ps -ef|grep openoffice

查看端口：

[root@localhost opt]# netstat -lnp |grep 8100

说明启动成功, 大功告成！

2.文件转换代码

  （1）导入jar包

    com.artofsolving
    jodconverter
    2.2.2


    org.openoffice
    juh
    3.2.1


    org.openoffice
    ridl
    3.2.1


    org.openoffice
    unoil
    3.2.1


    commons-cli
    commons-cli
    1.1
    true


    com.thoughtworks.xstream
    xstream
    1.3.1

（2）工具类代码

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
 
import com.artofsolving.jodconverter.DocumentConverter;
import com.artofsolving.jodconverter.openoffice.connection.OpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.connection.SocketOpenOfficeConnection;
import com.artofsolving.jodconverter.openoffice.converter.StreamOpenOfficeDocumentConverter;
 
public class Doc2HtmlUtil {
	
	
    /**
     * 转换文件成pdf
     * 
     * @param fromFileInputStream:
     * @throws IOException 
     */
    public static String file2pdf(InputStream fromFileInputStream, String toFilePath,String type) throws Exception{
        String timesuffix = IDUtil.getID();
        String docFileName = null;
        String htmFileName = null;
        if("doc".equals(type)){
            docFileName = timesuffix.concat(".doc");
            htmFileName = timesuffix.concat(".pdf");
        }else if("docx".equals(type)){
            docFileName = timesuffix.concat(".docx");
            htmFileName = timesuffix.concat(".pdf");
        }else if("xls".equals(type)){
            docFileName = timesuffix.concat(".xls");
            htmFileName = timesuffix.concat(".pdf");
        }else if("xlsx".equals(type)){
            docFileName = timesuffix.concat(".xlsx");
            htmFileName = timesuffix.concat(".pdf");
        }else if("ppt".equals(type)){
            docFileName = timesuffix.concat(".ppt");
            htmFileName = timesuffix.concat(".pdf");
        }else if("pptx".equals(type)){
            docFileName = timesuffix.concat(".pptx");
            htmFileName = timesuffix.concat(".pdf");
        }else if("txt".equals(type)){
            docFileName = timesuffix.concat(".txt");
            htmFileName = timesuffix.concat(".pdf");
        }else{
        	return null;
        }
 
        File htmlOutputFile = new File(toFilePath + File.separatorChar + htmFileName);
        File docInputFile = new File(toFilePath + File.separatorChar + docFileName);
        if (htmlOutputFile.exists()){
        	htmlOutputFile.delete();
        }
 
		htmlOutputFile.createNewFile();
 
        docInputFile.createNewFile();
        
        /**
         * 由fromFileInputStream构建输入文件
         */
        int bytesRead = 0;
        byte[] buffer = new byte[1024];
    	OutputStream os = new FileOutputStream(docInputFile);
		while ((bytesRead = fromFileInputStream.read(buffer)) != -1) {
		    os.write(buffer, 0, bytesRead);
		}
		os.close();
        fromFileInputStream.close();
        
        OpenOfficeConnection connection = new SocketOpenOfficeConnection(FSUtil.FS_FILE_CONVERT_HOST,8100);
		connection.connect();
        // convert
        DocumentConverter converter = new StreamOpenOfficeDocumentConverter(connection);
        converter.convert(docInputFile, htmlOutputFile);
        connection.disconnect();
        // 转换完之后删除word文件
        docInputFile.delete();
        return htmFileName;
    }
    /**
     * 文件转换成Html
     * @param fromFileInputStream
     * @param toFilePath
     * @param type
     * @return
     * @throws Exception
     */
    public static String file2Html (InputStream fromFileInputStream, String toFilePath,String type) throws Exception{
		String timesuffix = IDUtil.getID();
        String docFileName = null;
        String htmFileName = null;
        if("doc".equals(type)){
            docFileName = timesuffix.concat(".doc");
            htmFileName = timesuffix.concat(".html");
        }else if("docx".equals(type)){
            docFileName = timesuffix.concat(".docx");
            htmFileName = timesuffix.concat(".html");
        }else if("xls".equals(type)){
            docFileName = timesuffix.concat(".xls");
            htmFileName = timesuffix.concat(".html");
        }else if("xlsx".equals(type)){
            docFileName = timesuffix.concat(".xlsx");
            htmFileName = timesuffix.concat(".html");
        }else if("ppt".equals(type)){
            docFileName = timesuffix.concat(".ppt");
            htmFileName = timesuffix.concat(".html");
        }else if("pptx".equals(type)){
            docFileName = timesuffix.concat(".pptx");
            htmFileName = timesuffix.concat(".html");
        }else if("txt".equals(type)){
            docFileName = timesuffix.concat(".txt");
            htmFileName = timesuffix.concat(".html");
        }else if("pdf".equals(type)){
        	docFileName = timesuffix.concat(".pdf");
			htmFileName = timesuffix.concat(".html");
        }else{
        	return null;
        }
		File htmlOutputFile = new File(toFilePath + File.separatorChar + htmFileName);
        File docInputFile = new File(toFilePath + File.separatorChar + docFileName);
        if (htmlOutputFile.exists()){
        	htmlOutputFile.delete();
        }
		htmlOutputFile.createNewFile();
        docInputFile.createNewFile();
        /**
         * 由fromFileInputStream构建输入文件
         */
        int bytesRead = 0;
        byte[] buffer = new byte[1024 * 8];
    	OutputStream os = new FileOutputStream(docInputFile);
		while ((bytesRead = fromFileInputStream.read(buffer)) != -1) {
		    os.write(buffer, 0, bytesRead);
		}
		os.close();
        fromFileInputStream.close();
        OpenOfficeConnection connection = new SocketOpenOfficeConnection(FSUtil.FS_FILE_CONVERT_HOST,8100);
		connection.connect();
        // convert
        DocumentConverter converter = new StreamOpenOfficeDocumentConverter(connection);
        converter.convert(docInputFile, htmlOutputFile);
        connection.disconnect();
        // 转换完之后删除word文件
        docInputFile.delete();
        return htmFileName;
	}	
}