Java 使用ApachePOI读取Excel、XML映射元素名称

我有一个业务需求，其中提供了一个excel文档，该文档具有xml映射（基本上使用excel菜单选项Developer->Source，然后选择一个xml文件并将xml元素映射到excel单元格）。例如：单元格A2中的值映射到xml元素“文档标题”，B2映射到“文档编号”

要求以编程方式读取excel文档，搜索XML元素列表，并查找映射的单元格和单元格内容。例如：搜索xml元素“document_title”，找到该元素映射到的单元格（在上面提到的示例中，这是A2），并读取单元格的内容

我曾尝试使用ApachePOI的OPCP包和XSSFReader类，并尝试使用DOMParser对其进行解析，但未能实现这一点

下面是一个精简版本的源代码，有人可以帮助我在正确的方向

public static void main( String[] args ) throws IOException
{
    System.out.println( "reading excel" );

    try {
        OPCPackage pkg = OPCPackage.open("D:\\test.xlsx");
        XSSFReader r = new XSSFReader( pkg ); 
        SharedStringsTable sst = r.getSharedStringsTable();

        InputStream inp = r.getSheet("rId1"); 

        InputSource inpSource = new InputSource(inp);

        DOMParser parser = new DOMParser(); 
        parser.parse(inpSource); 

        Document doc = parser.getDocument(); 
        inp.close();  // dont know yet, how to read each element, and hence trying to write this to a file

        OutputStream writer = new FileOutputStream("D:\\outtrId11.xml"); 
        TransformerFactory transfac = TransformerFactory.newInstance(); 
        Transformer trans = transfac.newTransformer(); 
                                trans.setOutputProperty(OutputKeys.OMIT_XML_DECLARATION, "yes"); 
        trans.setOutputProperty(OutputKeys.INDENT, "yes"); 
        trans.setOutputProperty(OutputKeys.ENCODING, "UTF-8"); 

        //create string from xml tree 

        StreamResult result = new StreamResult(writer); 
        DOMSource source = new DOMSource(doc); 
        trans.transform(source, result);            

    } catch (InvalidFormatException e1) {
        // TODO Auto-generated catch block
        e1.printStackTrace();
    } catch (OpenXML4JException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (SAXException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (TransformerConfigurationException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    } catch (TransformerException e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
    }

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如有任何疑问/建议，请告知我。非常感谢您提供的任何帮助

在网上浏览了一段时间后，我发现了一个示例，用于解决POI类中的一个bug。我根据自己的需要调整了该示例中的代码，得到了所需的内容

总之，下面的代码读取xlsx文件，检索任何关系（在本例中，我感兴趣的关系是tableSingleCells，因为它包含xml映射数据）。然后，代码解析该文档中所有映射的XML元素和关联的单元格引用

最后，我将显示XML元素、xpath和与这些XML元素关联的单元格的单元格值

public static void main(String[] args) throws Exception {

     System.out.println( "reading excel" );

     File file = new File("D:\\test.xlsx");
     // load an XLSX file with mapping informations

     XSSFWorkbook wb;
     wb = new XSSFWorkbook(file.getAbsolutePath());

        for( XSSFSheet sheet : wb ) {

            for( POIXMLDocumentPart doc : sheet.getRelations() ) {

                final PackagePart part = doc.getPackagePart();
                assert null!=part;

                if( part==null ) {
                    System.out.println("part of relation is null. Will be ignored!");
                    continue;
                }

                //System.out.println(String.format("contentType [%s]", part.getContentType()));

                if(part.getContentType().equalsIgnoreCase("application/vnd.openxmlformats-officedocument.spreadsheetml.tableSingleCells+xml"))
                {
                    System.out.println(String.format("contentType [%s]", part.getContentType()));

                    SingleXmlCellsDocument singleCellsXml = SingleXmlCellsDocument.Factory.parse( part.getInputStream() );
                    CTSingleXmlCells scs = singleCellsXml.getSingleXmlCells();

                    for( CTSingleXmlCell sc :  scs.getSingleXmlCellArray() ) {

                        //get R reference
                        final String ref = sc.getR();

                        //get cell reference
                        final CellReference cellRef = new CellReference( ref );
                        final CTXmlCellPr cellPr = sc.getXmlCellPr();

                        //get xml element reference
                        final CTXmlPr pr = cellPr.getXmlPr();

                        //get xpath reference
                        final String xpath = pr.getXpath();

                        //navigate to the cell by setting row and column
                        final int rowNum = cellRef.getRow();
                        XSSFRow row = sheet.getRow(rowNum);

                        final int colNum = cellRef.getCol();
                        XSSFCell cell = row.getCell( colNum);


                        DataFormatter formatter = new DataFormatter();

                        String cellStrValue="";

                        cellStrValue=formatter.formatCellValue(cell);


                        //System.out.println(xpathQuery);
                        final String xpathQuery = String.format("[Cell Reference: " + ref +  "] [Element Name: "+ cellPr.getUniqueName()  + "] [Cell Value: " + cellStrValue  + "] [Full xpath: " + xpath + "]" );
                        System.out.println(xpathQuery);


                    }

                }

            }

        }

        wb.close();

}

希望这对别人有帮助。请随时询问是否有任何疑问

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谢谢，

请包括导入内容。我不明白你从哪里弄来的东西！