openoffice jodconverter 文档转换pdf过坑记录

文档转换性能测试
在财务系统中使用了两种PDF转换组件
一种是com.artofsolving,也是系统第一次引用的组件：

        <dependency>
            <groupId>com.artofsolvinggroupId>
            <artifactId>jodconverterartifactId>
            <version>2.2.1version>
        dependency>

另外一种是org.artofsolving,系统第二次引用的上传组件：

        <dependency>
            <groupId>org.artofsolving.jodconvertergroupId>
            <artifactId>jodconverter-coreartifactId>
            <version>3.0-beta-4version>
        dependency>

这两种在项目开发测试过程中有不同的表现，
首先openoffice是4.1.2
支持建议：
* 微软 Windows XP, Vista, Windows 7 或者 Windows 8
* Pentium III 或更高系列处理器
* 256 MB RAM（建议使用 512 MB RAM）
* 高达 1.5 GB 的硬盘可用空间
* 1024x768 分辨率（建议使用更高分辨率），至少 256 色

Dropzone:支持的配置
单个文件最大支持100M上传
没有限制上传文件数量
同时上传文件的数量是3

下面主要看上传后进行pdf转换的效率
测试文件：test.doc,test.ppt,test.xls

通过上面的对比，除了org支持更多格式之外在速度上没有优势，并且转换出来的文字清晰度比com低了一点点。

特别的在文件名有（）符号的话Linux上传读取不到。
为什么支持的文件类型有区别，因为Com.artofsolving的源码中DocumentFormatRegistry有多种实现方式，这是一个接口，默认的文档格式注册对象documentFormats list，中就没有MS 2007的：

public class DefaultDocumentFormatRegistry extends BasicDocumentFormatRegistry {

   public DefaultDocumentFormatRegistry() {
      final DocumentFormat pdf = new DocumentFormat("Portable Document Format", "application/pdf", "pdf");
        pdf.setExportFilter(DocumentFamily.DRAWING, "draw_pdf_Export");
      pdf.setExportFilter(DocumentFamily.PRESENTATION, "impress_pdf_Export");
      pdf.setExportFilter(DocumentFamily.SPREADSHEET, "calc_pdf_Export");
      pdf.setExportFilter(DocumentFamily.TEXT, "writer_pdf_Export");
      addDocumentFormat(pdf);

      final DocumentFormat swf = new DocumentFormat("Macromedia Flash", "application/x-shockwave-flash", "swf");
        swf.setExportFilter(DocumentFamily.DRAWING, "draw_flash_Export");
      swf.setExportFilter(DocumentFamily.PRESENTATION, "impress_flash_Export");
      addDocumentFormat(swf);

      final DocumentFormat xhtml = new DocumentFormat("XHTML", "application/xhtml+xml", "xhtml");
      xhtml.setExportFilter(DocumentFamily.PRESENTATION, "XHTML Impress File");
      xhtml.setExportFilter(DocumentFamily.SPREADSHEET, "XHTML Calc File");
      xhtml.setExportFilter(DocumentFamily.TEXT, "XHTML Writer File");
      addDocumentFormat(xhtml);

      // HTML is treated as Text when supplied as input, but as an output it is also
      // available for exporting Spreadsheet and Presentation formats
      final DocumentFormat html = new DocumentFormat("HTML", DocumentFamily.TEXT, "text/html", "html");
      html.setExportFilter(DocumentFamily.PRESENTATION, "impress_html_Export");
      html.setExportFilter(DocumentFamily.SPREADSHEET, "HTML (StarCalc)");
      html.setExportFilter(DocumentFamily.TEXT, "HTML (StarWriter)");
      addDocumentFormat(html);

      final DocumentFormat odt = new DocumentFormat("OpenDocument Text", DocumentFamily.TEXT, "application/vnd.oasis.opendocument.text", "odt");
      odt.setExportFilter(DocumentFamily.TEXT, "writer8");
      addDocumentFormat(odt);

      final DocumentFormat sxw = new DocumentFormat("OpenOffice.org 1.0 Text Document", DocumentFamily.TEXT, "application/vnd.sun.xml.writer", "sxw");
      sxw.setExportFilter(DocumentFamily.TEXT, "StarOffice XML (Writer)");
      addDocumentFormat(sxw);

      final DocumentFormat doc = new DocumentFormat("Microsoft Word", DocumentFamily.TEXT, "application/msword", "doc");
      doc.setExportFilter(DocumentFamily.TEXT, "MS Word 97");
      addDocumentFormat(doc);

      final DocumentFormat rtf = new DocumentFormat("Rich Text Format", DocumentFamily.TEXT, "text/rtf", "rtf");
      rtf.setExportFilter(DocumentFamily.TEXT, "Rich Text Format");
      addDocumentFormat(rtf);

      final DocumentFormat wpd = new DocumentFormat("WordPerfect", DocumentFamily.TEXT, "application/wordperfect", "wpd");
      addDocumentFormat(wpd);

      final DocumentFormat txt = new DocumentFormat("Plain Text", DocumentFamily.TEXT, "text/plain", "txt");
        // set FilterName to "Text" to prevent OOo from tryign to display the "ASCII Filter Options" dialog
        // alternatively FilterName could be "Text (encoded)" and FilterOptions used to set encoding if needed
        txt.setImportOption("FilterName", "Text");
      txt.setExportFilter(DocumentFamily.TEXT, "Text");
      addDocumentFormat(txt);

      final DocumentFormat wikitext = new DocumentFormat("MediaWiki wikitext", "text/x-wiki", "wiki");
      wikitext.setExportFilter(DocumentFamily.TEXT, "MediaWiki");
        addDocumentFormat(wikitext);

      final DocumentFormat ods = new DocumentFormat("OpenDocument Spreadsheet", DocumentFamily.SPREADSHEET, "application/vnd.oasis.opendocument.spreadsheet", "ods");
      ods.setExportFilter(DocumentFamily.SPREADSHEET, "calc8");
      addDocumentFormat(ods);

      final DocumentFormat sxc = new DocumentFormat("OpenOffice.org 1.0 Spreadsheet", DocumentFamily.SPREADSHEET, "application/vnd.sun.xml.calc", "sxc");
      sxc.setExportFilter(DocumentFamily.SPREADSHEET, "StarOffice XML (Calc)");
      addDocumentFormat(sxc);

      final DocumentFormat xls = new DocumentFormat("Microsoft Excel", DocumentFamily.SPREADSHEET, "application/vnd.ms-excel", "xls");
      xls.setExportFilter(DocumentFamily.SPREADSHEET, "MS Excel 97");
      addDocumentFormat(xls);

        final DocumentFormat csv = new DocumentFormat("CSV", DocumentFamily.SPREADSHEET, "text/csv", "csv");
        csv.setImportOption("FilterName", "Text - txt - csv (StarCalc)");
        csv.setImportOption("FilterOptions", "44,34,0");  // Field Separator: ','; Text Delimiter: '"'  
        csv.setExportFilter(DocumentFamily.SPREADSHEET, "Text - txt - csv (StarCalc)");
        csv.setExportOption(DocumentFamily.SPREADSHEET, "FilterOptions", "44,34,0");
        addDocumentFormat(csv);

        final DocumentFormat tsv = new DocumentFormat("Tab-separated Values", DocumentFamily.SPREADSHEET, "text/tab-separated-values", "tsv");
        tsv.setImportOption("FilterName", "Text - txt - csv (StarCalc)");
        tsv.setImportOption("FilterOptions", "9,34,0");  // Field Separator: '\t'; Text Delimiter: '"'
        tsv.setExportFilter(DocumentFamily.SPREADSHEET, "Text - txt - csv (StarCalc)");
        tsv.setExportOption(DocumentFamily.SPREADSHEET, "FilterOptions", "9,34,0");
        addDocumentFormat(tsv);

      final DocumentFormat odp = new DocumentFormat("OpenDocument Presentation", DocumentFamily.PRESENTATION, "application/vnd.oasis.opendocument.presentation", "odp");
      odp.setExportFilter(DocumentFamily.PRESENTATION, "impress8");
      addDocumentFormat(odp);

      final DocumentFormat sxi = new DocumentFormat("OpenOffice.org 1.0 Presentation", DocumentFamily.PRESENTATION, "application/vnd.sun.xml.impress", "sxi");
      sxi.setExportFilter(DocumentFamily.PRESENTATION, "StarOffice XML (Impress)");
      addDocumentFormat(sxi);

      final DocumentFormat ppt = new DocumentFormat("Microsoft PowerPoint", DocumentFamily.PRESENTATION, "application/vnd.ms-powerpoint", "ppt");
      ppt.setExportFilter(DocumentFamily.PRESENTATION, "MS PowerPoint 97");
      addDocumentFormat(ppt);

        final DocumentFormat odg = new DocumentFormat("OpenDocument Drawing", DocumentFamily.DRAWING, "application/vnd.oasis.opendocument.graphics", "odg");
        odg.setExportFilter(DocumentFamily.DRAWING, "draw8");
        addDocumentFormat(odg);

        final DocumentFormat svg = new DocumentFormat("Scalable Vector Graphics", "image/svg+xml", "svg");
        svg.setExportFilter(DocumentFamily.DRAWING, "draw_svg_Export");
        addDocumentFormat(svg);
   }
}
而org中则有源码如下：

public class DefaultDocumentFormatRegistry extends SimpleDocumentFormatRegistry {
    public DefaultDocumentFormatRegistry() {
        DocumentFormat pdf = new DocumentFormat("Portable Document Format", "pdf", "application/pdf");
        pdf.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "writer_pdf_Export"));
        pdf.setStoreProperties(DocumentFamily.SPREADSHEET, Collections.singletonMap("FilterName", "calc_pdf_Export"));
        pdf.setStoreProperties(DocumentFamily.PRESENTATION, Collections.singletonMap("FilterName", "impress_pdf_Export"));
        pdf.setStoreProperties(DocumentFamily.DRAWING, Collections.singletonMap("FilterName", "draw_pdf_Export"));
        this.addFormat(pdf);
        DocumentFormat swf = new DocumentFormat("Macromedia Flash", "swf", "application/x-shockwave-flash");
        swf.setStoreProperties(DocumentFamily.PRESENTATION, Collections.singletonMap("FilterName", "impress_flash_Export"));
        swf.setStoreProperties(DocumentFamily.DRAWING, Collections.singletonMap("FilterName", "draw_flash_Export"));
        this.addFormat(swf);
        DocumentFormat html = new DocumentFormat("HTML", "html", "text/html");
        html.setInputFamily(DocumentFamily.TEXT);
        html.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "HTML (StarWriter)"));
        html.setStoreProperties(DocumentFamily.SPREADSHEET, Collections.singletonMap("FilterName", "HTML (StarCalc)"));
        html.setStoreProperties(DocumentFamily.PRESENTATION, Collections.singletonMap("FilterName", "impress_html_Export"));
        this.addFormat(html);
        DocumentFormat odt = new DocumentFormat("OpenDocument Text", "odt", "application/vnd.oasis.opendocument.text");
        odt.setInputFamily(DocumentFamily.TEXT);
        odt.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "writer8"));
        this.addFormat(odt);
        DocumentFormat sxw = new DocumentFormat("OpenOffice.org 1.0 Text Document", "sxw", "application/vnd.sun.xml.writer");
        sxw.setInputFamily(DocumentFamily.TEXT);
        sxw.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "StarOffice XML (Writer)"));
        this.addFormat(sxw);
        DocumentFormat doc = new DocumentFormat("Microsoft Word", "doc", "application/msword");
        doc.setInputFamily(DocumentFamily.TEXT);
        doc.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "MS Word 97"));
        this.addFormat(doc);
        DocumentFormat docx = new DocumentFormat("Microsoft Word 2007 XML", "docx", "application/vnd.openxmlformats-officedocument.wordprocessingml.document");
        docx.setInputFamily(DocumentFamily.TEXT);
        this.addFormat(docx);
        DocumentFormat rtf = new DocumentFormat("Rich Text Format", "rtf", "text/rtf");
        rtf.setInputFamily(DocumentFamily.TEXT);
        rtf.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "Rich Text Format"));
        this.addFormat(rtf);
        DocumentFormat wpd = new DocumentFormat("WordPerfect", "wpd", "application/wordperfect");
        wpd.setInputFamily(DocumentFamily.TEXT);
        this.addFormat(wpd);
        DocumentFormat txt = new DocumentFormat("Plain Text", "txt", "text/plain");
        txt.setInputFamily(DocumentFamily.TEXT);
        LinkedHashMap txtLoadAndStoreProperties = new LinkedHashMap();
        txtLoadAndStoreProperties.put("FilterName", "Text (encoded)");
        txtLoadAndStoreProperties.put("FilterOptions", "utf8");
        txt.setLoadProperties(txtLoadAndStoreProperties);
        txt.setStoreProperties(DocumentFamily.TEXT, txtLoadAndStoreProperties);
        this.addFormat(txt);
        DocumentFormat wikitext = new DocumentFormat("MediaWiki wikitext", "wiki", "text/x-wiki");
        wikitext.setStoreProperties(DocumentFamily.TEXT, Collections.singletonMap("FilterName", "MediaWiki"));
        DocumentFormat ods = new DocumentFormat("OpenDocument Spreadsheet", "ods", "application/vnd.oasis.opendocument.spreadsheet");
        ods.setInputFamily(DocumentFamily.SPREADSHEET);
        ods.setStoreProperties(DocumentFamily.SPREADSHEET, Collections.singletonMap("FilterName", "calc8"));
        this.addFormat(ods);
        DocumentFormat sxc = new DocumentFormat("OpenOffice.org 1.0 Spreadsheet", "sxc", "application/vnd.sun.xml.calc");
        sxc.setInputFamily(DocumentFamily.SPREADSHEET);
        sxc.setStoreProperties(DocumentFamily.SPREADSHEET, Collections.singletonMap("FilterName", "StarOffice XML (Calc)"));
        this.addFormat(sxc);
        DocumentFormat xls = new DocumentFormat("Microsoft Excel", "xls", "application/vnd.ms-excel");
        xls.setInputFamily(DocumentFamily.SPREADSHEET);
        xls.setStoreProperties(DocumentFamily.SPREADSHEET, Collections.singletonMap("FilterName", "MS Excel 97"));
        this.addFormat(xls);
        DocumentFormat xlsx = new DocumentFormat("Microsoft Excel 2007 XML", "xlsx", "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");
        xlsx.setInputFamily(DocumentFamily.SPREADSHEET);
        this.addFormat(xlsx);
        DocumentFormat csv = new DocumentFormat("Comma Separated Values", "csv", "text/csv");
        csv.setInputFamily(DocumentFamily.SPREADSHEET);
        LinkedHashMap csvLoadAndStoreProperties = new LinkedHashMap();
        csvLoadAndStoreProperties.put("FilterName", "Text - txt - csv (StarCalc)");
        csvLoadAndStoreProperties.put("FilterOptions", "44,34,0");
        csv.setLoadProperties(csvLoadAndStoreProperties);
        csv.setStoreProperties(DocumentFamily.SPREADSHEET, csvLoadAndStoreProperties);
        this.addFormat(csv);
        DocumentFormat tsv = new DocumentFormat("Tab Separated Values", "tsv", "text/tab-separated-values");
        tsv.setInputFamily(DocumentFamily.SPREADSHEET);
        LinkedHashMap tsvLoadAndStoreProperties = new LinkedHashMap();
        tsvLoadAndStoreProperties.put("FilterName", "Text - txt - csv (StarCalc)");
        tsvLoadAndStoreProperties.put("FilterOptions", "9,34,0");
        tsv.setLoadProperties(tsvLoadAndStoreProperties);
        tsv.setStoreProperties(DocumentFamily.SPREADSHEET, tsvLoadAndStoreProperties);
        this.addFormat(tsv);
        DocumentFormat odp = new DocumentFormat("OpenDocument Presentation", "odp", "application/vnd.oasis.opendocument.presentation");
        odp.setInputFamily(DocumentFamily.PRESENTATION);
        odp.setStoreProperties(DocumentFamily.PRESENTATION, Collections.singletonMap("FilterName", "impress8"));
        this.addFormat(odp);
        DocumentFormat sxi = new DocumentFormat("OpenOffice.org 1.0 Presentation", "sxi", "application/vnd.sun.xml.impress");
        sxi.setInputFamily(DocumentFamily.PRESENTATION);
        sxi.setStoreProperties(DocumentFamily.PRESENTATION, Collections.singletonMap("FilterName", "StarOffice XML (Impress)"));
        this.addFormat(sxi);
        DocumentFormat ppt = new DocumentFormat("Microsoft PowerPoint", "ppt", "application/vnd.ms-powerpoint");
        ppt.setInputFamily(DocumentFamily.PRESENTATION);
        ppt.setStoreProperties(DocumentFamily.PRESENTATION, Collections.singletonMap("FilterName", "MS PowerPoint 97"));
        this.addFormat(ppt);
        DocumentFormat pptx = new DocumentFormat("Microsoft PowerPoint 2007 XML", "pptx", "application/vnd.openxmlformats-officedocument.presentationml.presentation");
        pptx.setInputFamily(DocumentFamily.PRESENTATION);
        this.addFormat(pptx);
        DocumentFormat odg = new DocumentFormat("OpenDocument Drawing", "odg", "application/vnd.oasis.opendocument.graphics");
        odg.setInputFamily(DocumentFamily.DRAWING);
        odg.setStoreProperties(DocumentFamily.DRAWING, Collections.singletonMap("FilterName", "draw8"));
        this.addFormat(odg);
        DocumentFormat svg = new DocumentFormat("Scalable Vector Graphics", "svg", "image/svg+xml");
        svg.setStoreProperties(DocumentFamily.DRAWING, Collections.singletonMap("FilterName", "draw_svg_Export"));
        this.addFormat(svg);
    }
}

原理实现基本差不多，可能通过定制化来实现com的多种文件方式支持。
对于测试文件数量和大小的不同所花费的时间也不同，多文件，中型文件大小采用串行方式进行pdf转换所用时间肯定比较长，这里可以通过改为并行的方式来加快处理速度。
特别的，org有两种创建转换方式，一种支持MS 2007的，另一种不支持：
不支持MS 2007：

DocumentConverter converter = new StreamOpenOfficeDocumentConverter(connection);   
但是网上说可以解决：
com.artofsolving.jodconverter.openoffice.connection.OpenOfficeException: conversion failed: could not load input document的异常，也就是文件名在Linux系统中路径解析的问题。
支持：
OfficeManager officeManager = getOfficeManager();
// 连接OpenOffice
OfficeDocumentConverter converter = new OfficeDocumentConverter(officeManager);

Com的创建转换对象的方式：
connection.connect();
DocumentConverter converter = new OpenOfficeDocumentConverter(connection);
com同时也有通过StreamOpenOfficeDocumentConverter创建转换对象的方式，本系统没有采用该方式。

综上，如果平均上传的文件不大于5M，并且不超过5个文件，系统可以在10秒内处理完成。
在后面的测试中如果文件大于10M,转换频率较高则会消耗系统资源，无法完成转换，后面提交的转换任务在组件的任务队列中将不会被接受。这里有个性能问题，大文件转换（20M左右）有时候会出现超时，而源码中设置的单个pdf转换任务的执行时间是120s,超时则报错，并重新进行连接，处理下一个任务。

在附件上传的开发中出现了很多坑:

1. 无法读取输入的文件—端口占用，重新启动
2. 无法解析文件名中的特殊字符串—这里跟阿里云文件上传有关
3. 端口占用—无法继续处理其他小文件的转换工作
   将连接openoffice的代码修改一下，首先连接已经启动的openoffice服务，否则重启新建连接转换服务。（代码级修复）
4. 不支持docx,等高版本MS 文档。（添加org组件解决该问题）
5. 不支持并发处理，不支持大文件转换
   这里阅读源码后发现无法进行优化，所使用的组件基本没有源码，看到的也仅仅是反编译的。
6. 在Windows上和Linux上的openoffice表现不太一样，主要就是转换时间，对文件格式，文件名，文件类型的解析不太一样。