使用javaparsingexcel数据到xml
我有下面的代码读取Excel文件，并显示在Java中的代码。 我想从Excel文件读取数据到java后执行代码，它将以XML格式转换并保存在XML文件中。
任何代码示例或引用将感恩;
public class POIExcelReader { public POIExcelReader (){ } 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 { fileSystem = new POIFSFileSystem (inputStream); HSSFWorkbook workBook = new HSSFWorkbook (fileSystem); HSSFSheet sheet = workBook.getSheetAt (0); Iterator<?> rows = sheet.rowIterator (); while (rows.hasNext ()) { HSSFRow row = (HSSFRow) rows.next(); // display row number System.out.println ("Row No.: " + row.getRowNum ()); // get a row, iterate through cells. Iterator<?> cells = row.cellIterator (); while (cells.hasNext ()) { HSSFCell cell = (HSSFCell) cells.next (); //System.out.println ("Cell : " + cell.getCellNum ()); switch (cell.getCellType ()) { case HSSFCell.CELL_TYPE_NUMERIC : { // NUMERIC CELL TYPE System.out.println ("Numeric: " + cell.getNumericCellValue ()); break; } case HSSFCell.CELL_TYPE_STRING : { // STRING CELL TYPE HSSFRichTextString richTextString = cell.getRichStringCellValue (); System.out.println ("String: " + richTextString.getString ()); break; } default: { // types other than String and Numeric. System.out.println ("Type not supported."); break; } } } } } catch(IOException e) { e.printStackTrace (); } } public static void main (String[] args) { POIExcelReader poiExample = new POIExcelReader (); String xlsPath ="c://Users//Secured//Desktop//artikli.xls"; poiExample.displayFromExcel (xlsPath); } } 您可以使用包中的类：javax.xml.parsers。 该包提供了允许处理XML文档的类。 例如DocumentBuilder，DocumentBuilderFactory等等。
使用下面的java代码（扩展您的原始代码）和位于以下位置的文件： http : //base.google.com/base/products.xls
import java.io.File; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; import java.io.InputStream; import java.util.ArrayList; import java.util.Iterator; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.OutputKeys; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerConfigurationException; import javax.xml.transform.TransformerException; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.apache.poi.poifs.filesystem.POIFSFileSystem; import org.w3c.dom.Document; import org.w3c.dom.Element; public class POIExcelReader { public POIExcelReader (){ } 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("products"); 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 (); //System.out.println ("Cell : " + cell.getCellNum ()); switch (cell.getCellType ()) { case HSSFCell.CELL_TYPE_NUMERIC : { // NUMERIC CELL TYPE System.out.println ("Numeric: " + cell.getNumericCellValue ()); rowData.add(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 numOfProduct = data.size(); for (int i = 1; i < numOfProduct; i++){ Element productElement = document.createElement("product"); rootElement.appendChild(productElement); int index = 0; for(String s: data.get(i)) { String headerString = data.get(0).get(index); if( data.get(0).get(index).equals("image link") ){ headerString = "image_link"; } if( data.get(0).get(index).equals("product type") ){ headerString = "product_type"; } Element headerElement = document.createElement(headerString); productElement.appendChild(headerElement); 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"); DOMSource source = new DOMSource(document); StreamResult result = new StreamResult(new File("products.xml")); //StreamResult result = new StreamResult(System.out); 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) { POIExcelReader poiExample = new POIExcelReader (); String xlsPath ="products.xls"; poiExample.displayFromExcel (xlsPath); } }
import java.io.*; import java.util.*; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.parsers.FactoryConfigurationError; import javax.xml.parsers.ParserConfigurationException; import javax.xml.transform.OutputKeys; import javax.xml.transform.Result; import javax.xml.transform.Source; import javax.xml.transform.Transformer; import javax.xml.transform.TransformerFactory; import javax.xml.transform.dom.DOMSource; import javax.xml.transform.stream.StreamResult; import org.apache.poi.hssf.usermodel.HSSFCell; import org.apache.poi.hssf.usermodel.HSSFRichTextString; import org.apache.poi.hssf.usermodel.HSSFRow; import org.apache.poi.hssf.usermodel.HSSFSheet; import org.apache.poi.hssf.usermodel.HSSFWorkbook; import org.w3c.dom.Document; import org.w3c.dom.Element; public class MyExp { protected DocumentBuilderFactory domFactory = null; protected DocumentBuilder domBuilder = null; public MyExp(){ try { domFactory = DocumentBuilderFactory.newInstance(); domBuilder = domFactory.newDocumentBuilder(); } catch (FactoryConfigurationError exp) { System.err.println(exp.toString()); } catch (ParserConfigurationException exp) { System.err.println(exp.toString()); } catch (Exception exp) { System.err.println(exp.toString()); } } public void convertFile(String xlsFileName, String xmlFileName){ try { Document newDoc = domBuilder.newDocument(); Element rootElement = newDoc.createElement("XMLCreators"); newDoc.appendChild(rootElement); InputStream InputStream=new FileInputStream(new File(xlsFileName)); HSSFWorkbook workBook = new HSSFWorkbook (InputStream); HSSFSheet sheet = workBook.getSheetAt (0); Iterator<?> rows = sheet.rowIterator (); List<String> headers = new ArrayList<String>(5); while (rows.hasNext ()) { HSSFRow row = (HSSFRow) rows.next(); int rowNumber = row.getRowNum (); 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 rowData.add(cell.getNumericCellValue () + ""); break; } case HSSFCell.CELL_TYPE_STRING : { // STRING CELL TYPE HSSFRichTextString richTextString = cell.getRichStringCellValue(); rowData.add(richTextString.getString ()); break; } default: { break; } } } // end while if(rowNumber==1){ headers.addAll(rowData); } else { Element rowElement = newDoc.createElement("row"); rootElement.appendChild(rowElement); for (int col = 0; col < headers.size(); col++) { String header = headers.get(col); String value = null; if (col < rowData.size()) { value = rowData.get(col); } else { value = ""; } Element curElement = newDoc.createElement(header); curElement.appendChild(newDoc.createTextNode(value)); rowElement.appendChild(curElement); } } } //end while ByteArrayOutputStream baos = null; OutputStreamWriter osw = null; try { baos = new ByteArrayOutputStream(); osw = new OutputStreamWriter(baos); TransformerFactory tranFactory = ransformerFactory.newInstance(); Transformer aTransformer = tranFactory.newTransformer(); aTransformer.setOutputProperty(OutputKeys.INDENT, "yes"); aTransformer.setOutputProperty(OutputKeys.METHOD, "xml"); aTransformer.setOutputProperty("http://xml.apache.org/xslt}indent-amount", "4"); Source src = new DOMSource(newDoc); Result result = new StreamResult(new File(xmlFileName)); aTransformer.transform(src, result); osw.flush(); System.out.println(new String(baos.toByteArray())); } catch (Exception exp) { exp.printStackTrace(); } finally { try { osw.close(); } catch (Exception e) { } try { baos.close(); } catch (Exception e) { } } } catch(IOException e) { System.out.println("IOException " + e.getMessage()); } } public static void main (String[] args) { MyExp poiExample = new MyExp (); poiExample.convertFile("srcfile.xls", "destfile.xml"); }
}