Question

我下面的代码将excel文件读入java代码，然后通过创建适当的标记解析为XML文档。我遇到的问题是空单元格。想象一下，有几列填充数据的列和行，如果单元格为空，则它会搞砸XML文档，因为在这种情况下它会插入下一个非空的单元格的值，因此结果不会是正确的。有关代码编辑的任何建议吗？

public class ExcelXMLParser {
public ExcelXMLParser ()  {
}

public void displayFromExcel (String xlsPath)
{
    InputStream inputStream = null; 
    try
    {
        inputStream = new FileInputStream (xlsPath);
    }
    catch (FileNotFoundException e)
    {
        System.out.println ("File not found in the specified path.");
        e.printStackTrace ();
    }

    POIFSFileSystem fileSystem = null;

    try {
        //Initializing the XML document
        DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
        DocumentBuilder builder = factory.newDocumentBuilder();
        Document document = builder.newDocument();
        Element rootElement = document.createElement("records");
        document.appendChild(rootElement);


        fileSystem = new POIFSFileSystem (inputStream);
        HSSFWorkbook workBook = new HSSFWorkbook (fileSystem);
        HSSFSheet sheet = workBook.getSheetAt (0); 
        Iterator<?> rows = sheet.rowIterator ();

        ArrayList<ArrayList<String>> data = new ArrayList<ArrayList<String>>();
        while (rows.hasNext ()) 
        {
            HSSFRow row = (HSSFRow) rows.next(); 
            int rowNumber = row.getRowNum ();
            // display row number
            //System.out.println ("Row No.: " + rowNumber);

            // get a row, iterate through cells.
            Iterator<?> cells = row.cellIterator (); 

            ArrayList<String> rowData = new ArrayList<String>();
            while (cells.hasNext ())
            {
                HSSFCell cell = (HSSFCell) cells.next ();
                switch (cell.getCellType ())
                {
                case HSSFCell.CELL_TYPE_NUMERIC :
                {
                    // NUMERIC CELL TYPE
                    //System.out.println ("Numeric: " + Integer.toString((int) cell.getNumericCellValue ()));
                    rowData.add(Integer.toString((int) cell.getNumericCellValue()));
                    break;
                }
                case HSSFCell.CELL_TYPE_STRING :
                {
                    // STRING CELL TYPE
                    HSSFRichTextString richTextString = cell.getRichStringCellValue ();

                    //System.out.println ("String: " + richTextString.getString ());
                    rowData.add(richTextString.getString ());
                    break;
                }
                default:
                {
                    // types other than String and Numeric.
                    System.out.println ("Type not supported.");
                    break;
                }
            } // end switch
        } // end while
        data.add(rowData);
    } //end while

    int numOfData = data.size();

    for (int i = 1; i < numOfData; i++){
        Element dataElement = document.createElement("data");
        rootElement.appendChild(dataElement);

        int index = 0;
        for(String s: data.get(i)) {
            String headerString = data.get(0).get(index);
            Element headerElement = document.createElement(headerString);
            dataElement.appendChild(headerElement);
            System.out.println(headerElement);
            System.out.println(s);
            headerElement.appendChild(document.createTextNode(s));
            index++;
        }
    }

    TransformerFactory tFactory = TransformerFactory.newInstance();

    Transformer transformer = tFactory.newTransformer();

    //Add indentation to output
    transformer.setOutputProperty
    (OutputKeys.INDENT, "yes");
    transformer.setOutputProperty(
            "{http://xml.apache.org/xslt}indent-amount", "2");

    // Define source
    DOMSource source = new DOMSource(document);
    StreamResult result = new StreamResult(new File("c:\\Users\\Temped\\Desktop\\dataXML.xml"));
    transformer.transform(source, result);

}
catch(IOException e)
{
    System.out.println("IOException " + e.getMessage());
} catch (ParserConfigurationException e) {
    System.out.println("ParserConfigurationException " + e.getMessage());
} catch (TransformerConfigurationException e) {
    System.out.println("TransformerConfigurationException "+ e.getMessage());
} catch (TransformerException e) {
    System.out.println("TransformerException " + e.getMessage());
}

}

public static void main (String[] args) 
{
    ExcelXMLParser generateOutput = new ExcelXMLParser ();
    String xlsPath ="C:\\Users\\Temped\\Desktop\\dataXLS.xls";
    generateOutput.displayFromExcel (xlsPath);
}   
}

Answer 1

修复了使用地图的问题。在LinkedHashMap的帮助下创建Map列表。

清空excel单元格XML解析问题

1 个答案: