使用jodconverter和swftools实现文件在线预览
参考：仿百度文库解决方案（四）——利用JODConverter调用OpenOffice.org服务转换文档为PDF
文档在线预览主要用到如下两个工具
1，安装openoffice（同时下载jodconverter.jar,依赖commons-io等包）（将doc/ppt等文档转换为pdf需要用到） 2，安装swftools 0.9.2(依赖gcc/gcc-c++/make等工具)（将pdf转换为swf需要用到） 如果安装swftools出现如下问题： * The following headers/libraries are missing: jpeglib t1lib ungif jpeglib.h freetype t1lib.h gif_lib.h * Disabling pdf2swf tool... * Disabling jpeg2swf tool... * Disabling gif2swf tool... zypper install t1lib-devel freetype2-devel giflib-devel libjpeg-devel
java代码目录如下：
$ ls -R * com: test com/test: DocConverter.class FileUtils.class OpenOfficePDFConverter.class SWFToolsSWFConverter.class TestDocConverter.class DocConverter.java FileUtils.java OpenOfficePDFConverter.java SWFToolsSWFConverter.java TestDocConverter.java libs: commons-io-2.4-javadoc.jar commons-io-2.4-test-sources.jar commons-io-2.4.jar juh-3.2.1.jar ridl-3.2.1.jar commons-io-2.4-sources.jar commons-io-2.4-tests.jar jodconverter-core-3.0-beta-4.jar jurt-3.2.1.jar unoil-3.2.1.jar
核心转换源代码如下：
doc/ppt/xls转pdf
// com/text/OpenOfficePDFConverter.java package com.test; import java.io.File; import java.io.FileNotFoundException; import org.artofsolving.jodconverter.OfficeDocumentConverter; import org.artofsolving.jodconverter.office.DefaultOfficeManagerConfiguration; import org.artofsolving.jodconverter.office.OfficeManager; import com.test.FileUtils; public class OpenOfficePDFConverter{ private static OfficeManager officeManager; private static String OFFICE_HOME = "/usr/lib64/libreoffice"; private static int port[] = {8100}; public void convert2PDF(String inputFile, String pdfFile) { if(inputFile.endsWith(".txt")){ String odtFile = FileUtils.getFilePrefix(inputFile)+".odt"; if(new File(odtFile).exists()){ inputFile = odtFile; }else{ try { FileUtils.copyFile(inputFile,odtFile); inputFile = odtFile; } catch (FileNotFoundException e) { e.printStackTrace(); } } } startService(); OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager); converter.convert(new File(inputFile),new File(pdfFile)); stopService(); } public void convert2PDF(String inputFile) { String pdfFile = FileUtils.getFilePrefix(inputFile)+".pdf"; convert2PDF(inputFile,pdfFile); } public static void startService(){ DefaultOfficeManagerConfiguration configuration = new DefaultOfficeManagerConfiguration(); try { configuration.setOfficeHome(OFFICE_HOME);//设置OpenOffice.org安装目录 configuration.setPortNumbers(port); //设置转换端口，默认为8100 configuration.setTaskExecutionTimeout(1000 * 60 * 5L);//设置任务执行超时为5分钟 configuration.setTaskQueueTimeout(1000 * 60 * 60 * 24L);//设置任务队列超时为24小时 officeManager = configuration.buildOfficeManager(); officeManager.start(); //启动服务 } catch (Exception ce) { System.out.println("office转换服务启动失败!详细信息:" + ce); } } public static void stopService(){ if (officeManager != null) { officeManager.stop(); } } }
pdf转swf
// com/test/SWFToolsSWFConverter.java package com.test; import java.io.File; import java.io.IOException; import com.test.FileUtils; public class SWFToolsSWFConverter{ private static String PDF2SWF_PATH = "/usr/local/bin/pdf2swf"; public void convert2SWF(String inputFile, String swfFile) { File pdfFile = new File(inputFile); File outFile = new File(swfFile); if(!inputFile.endsWith(".pdf")){ return ; } if(!pdfFile.exists()){ return ; } if(outFile.exists()){ return ; } String command = PDF2SWF_PATH +" "+inputFile+" -o "+swfFile+" -f -T 9 -t -s storeallcharacters"; try { Runtime.getRuntime().exec(command); } catch (Exception e) { e.printStackTrace(); System.out.println("转换文档为swf文件失败！"); } } public void convert2SWF(String inputFile) { String swfFile = FileUtils.getFilePrefix(inputFile)+".swf"; convert2SWF(inputFile,swfFile); } }
结合两个转换器
package com.test; import com.test.OpenOfficePDFConverter; import com.test.SWFToolsSWFConverter; public class TestDocConverter { public static void main(String[]args){ OpenOfficePDFConverter pdfConverter = new OpenOfficePDFConverter(); SWFToolsSWFConverter swfConverter = new SWFToolsSWFConverter(); DocConverter converter = new DocConverter(pdfConverter, swfConverter); String pptFile = args[0]; converter.convert(pptFile); } }
命令行执行方式如下（生成pdf文件及swf文件）
javac -cp .:libs/* com/test/*.java
java -cp .:libs/* com/test/TestDocConverter uploads/b.txt
（pdf2swf $targetFile -o $targetFile.swf -f -T 9 -t -s storeallcharacters）
注：如果中文乱码，则将simsun.ttc文件放到liboffice的字体目录下，然后如果root用户转pdf不乱码，非root用户乱码，则将字体文件再方一份到/usr/share/font/truetype/
php 上传代码：
<?php //print error msg ini_set('display_errors',1); error_reporting(E_ALL); $targetFolder = '/uploads'; // Relative to the root if (!empty($_FILES)) { $tempFile = $_FILES['Filedata']['tmp_name']; $targetPath = $_SERVER['DOCUMENT_ROOT'] . $targetFolder; $targetFile = rtrim($targetPath,'/') . '/' . $_FILES['Filedata']['name']; $fileTypes = array('txt','doc','xls','ppt','docx', 'xlsx','pptx','pdf'); // File extensions $fileParts = pathinfo($_FILES['Filedata']['name']); $fileParts2 = pathinfo($tempFile); if (in_array($fileParts['extension'],$fileTypes)) { $targetFile = rtrim($targetPath,'/') . '/' . $fileParts2["filename"].".".$fileParts['extension']; move_uploaded_file($tempFile,$targetFile); if ($fileParts['extension'] != "pdf") { $ret = system("cd tool;/usr/bin/java -cp .:libs/* com/test/TestDocConverter $targetFile", $res); $targetFile = str_replace(".".$fileParts['extension'],".swf", $targetFile); $path = str_replace("/usr/local/nginx/htdocs","",$targetFile); } else { exec("pdf2swf $targetFile -o $targetFile.swf -f -T 9 -t -s storeallcharacters"); $path = str_replace("/usr/local/nginx/htdocs","",$targetFile.".swf"); } header("Location: ./view.php?path=".urlencode($path)); echo '1'; } else { echo 'Invalid file type.'; } } ?>
用flexpaper显示如下：(view.php)
<script type="text/javascript"> $('#documentViewer').FlexPaperViewer( { config : { SWFFile : '<?php echo urldecode($_GET["path"]); ?>', Scale : 0.9, ZoomTransition : 'easeOut', ZoomTime : 0.5, ZoomInterval : 0.2, FitPageOnLoad : false, FitWidthOnLoad : true, FullScreenAsMaxWindow : true, ProgressiveLoading : false, MinZoomSize : 0.2, MaxZoomSize : 5, SearchMatchAll : false, InitViewMode : 'Portrait', RenderingOrder : 'flash', StartAtPage : '', ViewModeToolsVisible : false, ZoomToolsVisible : false, NavToolsVisible : false, CursorToolsVisible : false, SearchToolsVisible : false, WMode : 'window', localeChain: 'en_US' }} ); </script>
测试了一下转换效果不是很理想，如果文件有中文字体，很容易乱码及文件无法转换的问题，尤其是pdf转swf这一步，失败率较高。
