使用OpenOffice实现文件在线预览

https://www.cnblogs.com/huangyanqi/p/9675440.html

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.artofsolvingjodconverter2.2.2org.openofficejuh3.2.1org.openofficeridl3.2.1org.openofficeunoil3.2.1commons-clicommons-cli1.1truecom.thoughtworks.xstreamxstream1.3.1
 

（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();// convertDocumentConverter 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();// convertDocumentConverter converter = new StreamOpenOfficeDocumentConverter(connection);converter.convert(docInputFile, htmlOutputFile);connection.disconnect();// 转换完之后删除word文件docInputFile.delete();return htmFileName;}	}