(POI)Excel格式转Html格式
Demo结构和引用的Jar包
源代码(TestDemo.java)
POI中将Excel转换为HTML方法仅能转换HSSFWorkBook类型(即03版xls),故可以先将读取的xlsx文件转换成xls文件再调用该方法统一处理
- package test;
- import java.io.ByteArrayOutputStream;
- import java.io.FileInputStream;
- import java.io.InputStream;
- import java.util.ArrayList;
- import javax.xml.parsers.DocumentBuilderFactory;
- import javax.xml.transform.OutputKeys;
- 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.converter.ExcelToHtmlConverter;
- import org.apache.poi.hssf.usermodel.HSSFWorkbook;
- import org.apache.poi.xssf.usermodel.XSSFWorkbook;
- import org.w3c.dom.Document;
- public class TestDemo {
- final static String path = "D:\\EclipseWorkspace\\ExcelToHtmlDemo\\ExcelToHtml\\";
- final static String file = "TestExcel.xlsx";
- private static final String EXCEL_XLS = "xls";
- private static final String EXCEL_XLSX = "xlsx";
- public static void main(String[] args)
- {
- try{
- InputStream input = new FileInputStream(path +"/"+ file);
- HSSFWorkbook excelBook = new HSSFWorkbook();
- //判断Excel文件将07+版本转换为03版本
- if(file.endsWith(EXCEL_XLS)){ //Excel 2003
- excelBook = new HSSFWorkbook(input);
- }
- else if(file.endsWith(EXCEL_XLSX)){ // Excel 2007/2010
- Transform xls = new Transform();
- XSSFWorkbook workbookOld = new XSSFWorkbook(input);
- xls.transformXSSF(workbookOld, excelBook);
- }
- ExcelToHtmlConverter excelToHtmlConverter = new ExcelToHtmlConverter(DocumentBuilderFactory.newInstance().newDocumentBuilder().newDocument());
- //去掉Excel头行
- excelToHtmlConverter.setOutputColumnHeaders(false);
- //去掉Excel行号
- excelToHtmlConverter.setOutputRowNumbers(false);
- excelToHtmlConverter.processWorkbook(excelBook);
- Document htmlDocument = excelToHtmlConverter.getDocument();
- ByteArrayOutputStream outStream = new ByteArrayOutputStream();
- DOMSource domSource = new DOMSource(htmlDocument);
- StreamResult streamResult = new StreamResult(outStream);
- TransformerFactory tf = TransformerFactory.newInstance();
- Transformer serializer = tf.newTransformer();
- serializer.setOutputProperty(OutputKeys.ENCODING, "gb2312");
- serializer.setOutputProperty(OutputKeys.INDENT, "yes");
- serializer.setOutputProperty(OutputKeys.METHOD, "html");
- serializer.transform(domSource, streamResult);
- outStream.close();
- //Excel转换成Html
- String content = new String(outStream.toByteArray());
- System.out.println(content);
- }
- catch(Exception e) {
- e.printStackTrace();
- }
- }
- }
源代码(Transform.java) 将xlsx文件转换成xls文件。(可以处理合并单元格,边框等格式问题!!!)
- package test;
- import java.util.HashMap;
- import org.apache.poi.hssf.usermodel.HSSFCell;
- import org.apache.poi.hssf.usermodel.HSSFCellStyle;
- import org.apache.poi.hssf.usermodel.HSSFFont;
- 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.ss.usermodel.Cell;
- import org.apache.poi.ss.usermodel.DataFormat;
- import org.apache.poi.ss.usermodel.Row;
- import org.apache.poi.ss.usermodel.Sheet;
- import org.apache.poi.ss.util.CellRangeAddress;
- import org.apache.poi.xssf.usermodel.XSSFCell;
- import org.apache.poi.xssf.usermodel.XSSFCellStyle;
- import org.apache.poi.xssf.usermodel.XSSFFont;
- import org.apache.poi.xssf.usermodel.XSSFRow;
- import org.apache.poi.xssf.usermodel.XSSFSheet;
- import org.apache.poi.xssf.usermodel.XSSFWorkbook;
- public class Transform {
- private int lastColumn = 0;
- private HashMap<Integer, HSSFCellStyle> styleMap = new HashMap();
- public void transformXSSF(XSSFWorkbook workbookOld, HSSFWorkbook workbookNew) {
- HSSFSheet sheetNew;
- XSSFSheet sheetOld;
- workbookNew.setMissingCellPolicy(workbookOld.getMissingCellPolicy());
- for (int i = 0; i < workbookOld.getNumberOfSheets(); i++) {
- sheetOld = workbookOld.getSheetAt(i);
- sheetNew = workbookNew.getSheet(sheetOld.getSheetName());
- sheetNew = workbookNew.createSheet(sheetOld.getSheetName());
- this.transform(workbookOld, workbookNew, sheetOld, sheetNew);
- }
- }
- private void transform(XSSFWorkbook workbookOld, HSSFWorkbook workbookNew,
- XSSFSheet sheetOld, HSSFSheet sheetNew) {
- sheetNew.setDisplayFormulas(sheetOld.isDisplayFormulas());
- sheetNew.setDisplayGridlines(sheetOld.isDisplayGridlines());
- sheetNew.setDisplayGuts(sheetOld.getDisplayGuts());
- sheetNew.setDisplayRowColHeadings(sheetOld.isDisplayRowColHeadings());
- sheetNew.setDisplayZeros(sheetOld.isDisplayZeros());
- sheetNew.setFitToPage(sheetOld.getFitToPage());
- sheetNew.setHorizontallyCenter(sheetOld.getHorizontallyCenter());
- sheetNew.setMargin(Sheet.BottomMargin,
- sheetOld.getMargin(Sheet.BottomMargin));
- sheetNew.setMargin(Sheet.FooterMargin,
- sheetOld.getMargin(Sheet.FooterMargin));
- sheetNew.setMargin(Sheet.HeaderMargin,
- sheetOld.getMargin(Sheet.HeaderMargin));
- sheetNew.setMargin(Sheet.LeftMargin,
- sheetOld.getMargin(Sheet.LeftMargin));
- sheetNew.setMargin(Sheet.RightMargin,
- sheetOld.getMargin(Sheet.RightMargin));
- sheetNew.setMargin(Sheet.TopMargin, sheetOld.getMargin(Sheet.TopMargin));
- sheetNew.setPrintGridlines(sheetNew.isPrintGridlines());
- sheetNew.setRightToLeft(sheetNew.isRightToLeft());
- sheetNew.setRowSumsBelow(sheetNew.getRowSumsBelow());
- sheetNew.setRowSumsRight(sheetNew.getRowSumsRight());
- sheetNew.setVerticallyCenter(sheetOld.getVerticallyCenter());
- HSSFRow rowNew;
- for (Row row : sheetOld) {
- rowNew = sheetNew.createRow(row.getRowNum());
- if (rowNew != null)
- this.transform(workbookOld, workbookNew, (XSSFRow) row, rowNew);
- }
- for (int i = 0; i < this.lastColumn; i++) {
- sheetNew.setColumnWidth(i, sheetOld.getColumnWidth(i));
- sheetNew.setColumnHidden(i, sheetOld.isColumnHidden(i));
- }
- for (int i = 0; i < sheetOld.getNumMergedRegions(); i++) {
- CellRangeAddress merged = sheetOld.getMergedRegion(i);
- sheetNew.addMergedRegion(merged);
- }
- }
- private void transform(XSSFWorkbook workbookOld, HSSFWorkbook workbookNew,
- XSSFRow rowOld, HSSFRow rowNew) {
- HSSFCell cellNew;
- rowNew.setHeight(rowOld.getHeight());
- for (Cell cell : rowOld) {
- cellNew = rowNew.createCell(cell.getColumnIndex(),
- cell.getCellType());
- if (cellNew != null)
- this.transform(workbookOld, workbookNew, (XSSFCell) cell,
- cellNew);
- }
- this.lastColumn = Math.max(this.lastColumn, rowOld.getLastCellNum());
- }
- private void transform(XSSFWorkbook workbookOld, HSSFWorkbook workbookNew,
- XSSFCell cellOld, HSSFCell cellNew) {
- cellNew.setCellComment(cellOld.getCellComment());
- Integer hash = cellOld.getCellStyle().hashCode();
- if (this.styleMap != null && !this.styleMap.containsKey(hash)) {
- this.transform(workbookOld, workbookNew, hash,
- cellOld.getCellStyle(),
- (HSSFCellStyle) workbookNew.createCellStyle());
- }
- cellNew.setCellStyle(this.styleMap.get(hash));
- switch (cellOld.getCellType()) {
- case Cell.CELL_TYPE_BLANK:
- break;
- case Cell.CELL_TYPE_BOOLEAN:
- cellNew.setCellValue(cellOld.getBooleanCellValue());
- break;
- case Cell.CELL_TYPE_ERROR:
- cellNew.setCellValue(cellOld.getErrorCellValue());
- break;
- case Cell.CELL_TYPE_FORMULA:
- cellNew.setCellValue(cellOld.getCellFormula());
- break;
- case Cell.CELL_TYPE_NUMERIC:
- cellNew.setCellValue(cellOld.getNumericCellValue());
- break;
- case Cell.CELL_TYPE_STRING:
- cellNew.setCellValue(cellOld.getStringCellValue());
- break;
- default:
- System.out.println("transform: Unbekannter Zellentyp "
- + cellOld.getCellType());
- }
- }
- private void transform(XSSFWorkbook workbookOld, HSSFWorkbook workbookNew,
- Integer hash, XSSFCellStyle styleOld, HSSFCellStyle styleNew) {
- styleNew.setAlignment(styleOld.getAlignment());
- styleNew.setBorderBottom(styleOld.getBorderBottom());
- styleNew.setBorderLeft(styleOld.getBorderLeft());
- styleNew.setBorderRight(styleOld.getBorderRight());
- styleNew.setBorderTop(styleOld.getBorderTop());
- styleNew.setDataFormat(this.transform(workbookOld, workbookNew,
- styleOld.getDataFormat()));
- styleNew.setFillBackgroundColor(styleOld.getFillBackgroundColor());
- styleNew.setFillForegroundColor(styleOld.getFillForegroundColor());
- styleNew.setFillPattern(styleOld.getFillPattern());
- styleNew.setFont(this.transform(workbookNew,
- (XSSFFont) styleOld.getFont()));
- styleNew.setHidden(styleOld.getHidden());
- styleNew.setIndention(styleOld.getIndention());
- styleNew.setLocked(styleOld.getLocked());
- styleNew.setVerticalAlignment(styleOld.getVerticalAlignment());
- styleNew.setWrapText(styleOld.getWrapText());
- this.styleMap.put(hash, styleNew);
- }
- private short transform(XSSFWorkbook workbookOld, HSSFWorkbook workbookNew,
- short index) {
- DataFormat formatOld = workbookOld.createDataFormat();
- DataFormat formatNew = workbookNew.createDataFormat();
- return formatNew.getFormat(formatOld.getFormat(index));
- }
- private HSSFFont transform(HSSFWorkbook workbookNew, XSSFFont fontOld) {
- HSSFFont fontNew = workbookNew.createFont();
- fontNew.setBoldweight(fontOld.getBoldweight());
- fontNew.setCharSet(fontOld.getCharSet());
- fontNew.setColor(fontOld.getColor());
- fontNew.setFontName(fontOld.getFontName());
- fontNew.setFontHeight(fontOld.getFontHeight());
- fontNew.setItalic(fontOld.getItalic());
- fontNew.setStrikeout(fontOld.getStrikeout());
- fontNew.setTypeOffset(fontOld.getTypeOffset());
- fontNew.setUnderline(fontOld.getUnderline());
- return fontNew;
- }
- }
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