从 pdf 的表格中读取数据的最佳方法是什么？答案

【问题标题】：which is the best way to read data from a table in a pdf?从 pdf 的表格中读取数据的最佳方法是什么？
【发布时间】：2018-03-19 21:08:01
【问题描述】：

我想从这个 PDF 的表格中读取数据。

PDF

我曾想过阅读 PDF，将其导出到 Excel，然后使用数据。读取pdf并将其导出到Excel的问题是，由于我使用Apache Poi读取，因此存在列元素移动到空列，并且通过这种方式将整个PDF保存在一个字符串中。

另一种方法是读取精确的坐标数据，但我认为这不是一个很好的选择。

有人可以给我建议吗？哪种方式更好或一些新的方式？

【问题讨论】：

阅读 PDF 的最佳方式是使用 PDF 库。现在你去做一些研究，看看你是否能找到一个允许从 Java 读取 PDF 表格内容的工具。

标签： java pdf export

【解决方案1】：

我在使用 Xpdf pdftotext 和 -layout 和 -table 选项的组合时遇到了最好的运气。

Xpdf Link

你会这样调用：

pdftotext -table c:\temp\ENaB20180317.pdf c:\temp\output.txt

然后您可以通过从每个页面的标题中获取起始列位置来进行解析。

另一个不错的选择是PDFBox，它可以以您可以使用的格式提取文本，而无需调用单独的命令行应用程序。

【讨论】：

【解决方案2】：

您的示例文件已被标记。只要您感兴趣的 PDF 被适当标记，您就可以使用可以提取标记信息的工具，例如使用 iText 7，您可以做到

PdfReader reader = new PdfReader(resource);
PdfDocument document = new PdfDocument(reader);

TaggedPdfReaderTool tool = new TaggedPdfReaderTool(document);
try (   OutputStream result = new FileOutputStream("ENaB 20180317.txt")   ) {
    tool.convertToXml(result);
}

结果如下：

<Workbook>
<Worksheet>
<Table bBox="[-12.1039 12.0189 829.816 607.339 ]" o="/Layout">
<TR>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
FECHA</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
HORA</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
CATEGOR&#205;A</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
PARTIDO</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" o="/Layout">
PABELL&#211;N</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" o="/Layout">
LOCALIDAD</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" o="/Layout">
ARBITRO
PRINCIPAL</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
ARBITRO
AUXILIAR</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
ACTA</TD>
<TD backgroundColor="[0.600006 0.800003 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
CRONO</TD>
<TD>
FECHA</TD>
<TD>
HORA</TD>
<TD>
CATEGOR&#205;A</TD>
<TD>
PARTIDO</TD>
<TD>
PABELL&#211;N</TD>
<TD>
LOCALIDAD</TD>
<TD>
ARBITRO
PRINCIPAL</TD>
<TD>
ARBITRO
AUXILIAR</TD>
<TD>
ACTA</TD>
<TD>
CRONO</TD>
</TR>
<TR>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
16/03/2018</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17:30</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
MINI. FEM. GR.B</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
EG&#220;ES-MENDILLORRI 2006*  -  ARDOI ABEJAS</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
P. TRINKETE</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD>
</TD>
<TD>
</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
I.VELASCO</TD>
</TR>
<TR>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
16/03/2018</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17:30</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
PREMINI. MAS. GR.1-10</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
SAN IGNACIO 07  -  CB BURLADA</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
P. SAN IGNACIO</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
A.ELOUARDI</TD>
<TD>
</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
A.IRAOLA</TD>
</TR>
<TR>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:10</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
INFANTIL MAS. 1&#170;</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
GAZTE BERRIAK  -  LAGUNAK</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
P. ARROSADIA P.I</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
P.HORME&#209;O</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
M.YKHELEF</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
I.VELASCO</TD>
</TR>
<TR>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:10</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
INFANTIL MAS. 1&#170;</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
SAN CERNIN B  -  AUTOBUSES LA PAMPLONESA ARDOI</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
P. ARROSADIA P.II</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
J.HUEGUN</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
A.PIDAL</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
M.TESO</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
OFI.CNaB</TD>
</TR>
<TR>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:10</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
MINI. MAS. GR.B</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
PATXI LARRAINZAR  LARANJA*  -  LA COMPASION*</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
P. AZPILAGA&#209;A P.III</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
S.VELIZAROVA</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
N.VILLAR</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
L.ORTIZ</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
OFI.CNaB</TD>
</TR>
<TR>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:10</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
MINI. MAS. GR.A</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
NAVARRO VILLOSLADA 06M  -  ADEMAR</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
P. IRIBARREN P.II</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
A.ELOUARDI</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
R.MARTIN</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
A.DE LA NAVA</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
OFI.CNaB</TD>
</TR>
<TR>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:10</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
CADETE MAS. 2&#170;</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
MENDIEG&#220;ES BNC*  -  BERRIOZAR MKE</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
P. LARRABIDE P.I</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD>
</TD>
<TD>
</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
I.LECUMBERRI</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
J.RAMIREZ</TD>
</TR>
<TR>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:15</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
PREINF. FEM. 1&#170;</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
MENDILLORRI 2005 AMARILLO  -  CBASK M</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
P. AZPILAGA&#209;A P.I</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" o="/Layout">
A.PEREZGARCIA</TD>
<TD>
</TD>
<TD backgroundColor="[1.0 1.0 1.0 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
A.IRIGOIEN</TD>
</TR>
<TR>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
17/03/2018</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
09:15</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
INFANTIL MAS. 2&#170;</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
CANTOLAGUA  -  CB ONCINEDA SK*</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
P. AZPILAGA&#209;A P.II</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
PAMPLONA</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" o="/Layout">
P.ALVAREZ</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
R.GARCIAMIGUEL</TD>
<TD backgroundColor="[0.752945 0.752945 0.752945 ]" blockAlign="/Middle" borderColor="[0.0 0.0 0.0 ]" borderStyle="/Solid" borderThickness="1.0" o="/Layout">
I.TAGUA</TD>
</TR>
[...]
</Table>
</Worksheet>
</Workbook>

【讨论】：