java html table 转 excel，给予jdom 和 poi

maven 引入

<dependency>
            <groupId>org.jdom</groupId>
            <artifactId>jdom</artifactId>
            <version>1.1.3</version>
</dependency>

工具类

import java.io.ByteArrayInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import org.apache.poi.hssf.usermodel.HSSFCell;
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.BorderStyle;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.ss.util.CellRangeAddress;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder; 

/**根据table的html代码生成excel
 * @param args
 * zyn
 * 2012-12-19 上午11:35:30
 */ 
public class TableToExcelUtil { 


    /**
     *  
     * @param sheetName
     * @param html
     * @param headNum表头的行数
     * @throws FileNotFoundException
     * zyn
     * 2012-12-21 下午1:44:02
     */ 
    @SuppressWarnings("unchecked")
    public static void  createExcelFormTable(String sheetName,String html,int headNum) throws FileNotFoundException{ 
        HSSFWorkbook wb = new HSSFWorkbook(); 
        HSSFSheet sheet = wb.createSheet(sheetName); 
        CellStyle headStyle = createHeadStyle(wb); 
        CellStyle bodyStyle = createBodyStyle(wb); 
        FileOutputStream os = new FileOutputStream("/Users/apple/Downloads/aa.xls"); 
        SAXBuilder sb = new SAXBuilder(); 
        html = html.replaceAll("
", "");
        ByteArrayInputStream is = new ByteArrayInputStream(html.getBytes()); 
        try { 
            Document document = sb.build(is); 
            //获取table节点 
            Element root = document.getRootElement(); 
            //获取tr的list 
            List<Element> children =  root.getChildren();

            List<Element> trList = new ArrayList<>();
            List<Element> head = children.get(0).getChildren();
            trList.addAll(head);

            List<Element> body = children.get(1).getChildren();
            trList.addAll(body);

            //循环创建行 
            for(int i=0;i<trList.size();i++){ 
                HSSFRow row = sheet.createRow(i); 
                List<Element> tdList = trList.get(i).getChildren("td"); 
                //该行td的序号 
                for(int ii=0;ii< tdList.size();ii++){ 
                    row.createCell(ii); 
                    HSSFCell cell = row.getCell(ii); 
                    //判断是否为表头，使用对应的excel格式 
                    if(i<headNum){ 
                        cell.setCellStyle(headStyle); 
                    }else{ 
                        cell.setCellStyle(bodyStyle); 
                    } 
                    cell.setCellValue(getInnerText(tdList.get(ii))); 

                } 

            }
            List<CellRangeAddress> cellArea = getCellArea(trList);
            if(!cellArea.isEmpty()) {
                for (CellRangeAddress cellRangeAddress : cellArea) {
                    sheet.addMergedRegion(cellRangeAddress);
                }
            }

            wb.write(os); 
        } catch (JDOMException e) { 
            e.printStackTrace(); 
        } catch (IOException e) { 
            e.printStackTrace(); 
        } 
    } 

    /**
     * 导出excel表格二维数组：0为文字占用格，1为横向被合并格，2为纵向合并格
     * @param trList
     * @return
     * zyn
     * 2012-12-21 下午1:35:40
     */ 
    private static List<CellRangeAddress> getCellArea(List<Element> trList){ 
        //获取table单元格矩阵 
        Element headtr = trList.get(0); 
        List<Element> headTdList = headtr.getChildren("td"); 
        //每行的未经合并的单元格个数 
        int cols = 0; 
        for(Element e:headTdList){ 
            System.out.println("#"+e.getText()); 
            int colspan = Integer.valueOf(null==e.getAttributeValue("colspan")?"0":e.getAttributeValue("colspan")); 
            if(colspan==0){ 
                colspan =1; 
            } 
            cols += colspan; 
        } 
        //初始化单元格矩阵 
        int[][] area = new int[trList.size()][cols]; 
        List<CellRangeAddress> cellRangeAddresses = new ArrayList<>();
        Element tr;
        List<Element> tdList;
        Element td;
        int trsize = trList.size();
        int tdsize;
        int colspan;
        int rowspan;
        CellRangeAddress cellRangeAddress;
        for(int row=0;row < trsize;row++){ 
            tr = trList.get(row); 
            tdList = tr.getChildren("td"); 
            tdsize = tdList.size();
            for(int col=0;col<tdsize;col++){ 
                td = tdList.get(col);
                colspan = Integer.valueOf(null==td.getAttributeValue("colspan")?"0":td.getAttributeValue("colspan")); 
                if(colspan==0){ 
                    colspan =1; 
                }


                rowspan = Integer.valueOf(null==td.getAttributeValue("rowspan")?"0":td.getAttributeValue("rowspan")); 
                if(rowspan==0){ 
                    rowspan = 1; 
                } 
                if(rowspan > 1) {
                    cellRangeAddress = new CellRangeAddress(row,row + rowspan - 1 ,col,col );
                    cellRangeAddresses.add(cellRangeAddress);
                }

                if(colspan > 1) {
                    cellRangeAddress = new CellRangeAddress(row,row ,col,col+colspan - 1 );
                    cellRangeAddresses.add(cellRangeAddress);
                }
            } 
        } 
        return cellRangeAddresses; 
    } 

    /**-
     * 设置表头样式
     * @param wb
     * @return
     */ 
    private static CellStyle createHeadStyle(Workbook wb){ 
        CellStyle style = wb.createCellStyle(); 
        Font headerFont = wb.createFont(); 
        headerFont.setBold(true);
        style.setAlignment(HorizontalAlignment.CENTER); 
        style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex()); 
        style.setFillPattern(FillPatternType.SOLID_FOREGROUND); 
        style.setFont(headerFont); 

        style.setBorderRight(BorderStyle.THIN); 
        style.setRightBorderColor(IndexedColors.BLACK.getIndex()); 
        style.setBorderBottom(BorderStyle.THIN); 
        style.setBottomBorderColor(IndexedColors.BLACK.getIndex()); 
        style.setBorderLeft(BorderStyle.THIN); 
        style.setLeftBorderColor(IndexedColors.BLACK.getIndex()); 
        style.setBorderTop(BorderStyle.THIN); 
        style.setTopBorderColor(IndexedColors.BLACK.getIndex()); 
        return style; 
    } 

    /**-
     * 设置表单记录样式
     * @param wb
     * @return
     */ 
    private static CellStyle createBodyStyle(Workbook wb){ 
        CellStyle style = wb.createCellStyle(); 
        Font headerFont = wb.createFont(); 
        headerFont.setBold(true); 
        style.setAlignment(HorizontalAlignment.CENTER); 
        style.setFillForegroundColor(IndexedColors.LIGHT_GREEN.getIndex()); 
        style.setFillPattern(FillPatternType.SOLID_FOREGROUND); 
        style.setFont(headerFont); 

        style.setBorderRight(BorderStyle.THIN); 
        style.setRightBorderColor(IndexedColors.BLACK.getIndex()); 
        style.setBorderBottom(BorderStyle.THIN); 
        style.setBottomBorderColor(IndexedColors.BLACK.getIndex()); 
        style.setBorderLeft(BorderStyle.THIN); 
        style.setLeftBorderColor(IndexedColors.BLACK.getIndex()); 
        style.setBorderTop(BorderStyle.THIN); 
        style.setTopBorderColor(IndexedColors.BLACK.getIndex()); 
        return style; 
    } 

    private static String getInnerText(Element td){ 
        String txt = ""; 
        if(td.getText()==null || td.getText().equals("")){ 
            if(null != td.getChildren()){ 
                for(int i=0;i<td.getChildren().size();i++){ 
                    Element e = (Element)td.getChildren().get(i); 
                    txt += getInnerText(e); 
                } 
            } 
        }else{ 
            txt = td.getText(); 
        } 
        return txt; } 


    public static void main(String[] args) throws FileNotFoundException { 
        TableToExcelUtil.createExcelFormTable("缴费统计", "<table><tr class="titlebg"><td align="center" nowrap="nowrap" rowspan="2" colspan="1">序号</td><td align="center" nowrap="nowrap" rowspan="2" colspan="1">计划</td><td align="center" nowrap="nowrap" rowspan="2" colspan="1">部门名称</td><td align="center" nowrap="nowrap" colspan="6">线上缴费</td><td align="center" nowrap="nowrap" colspan="3">线下缴费</td><td align="center" nowrap="nowrap" rowspan="2" colspan="1">总计</td></tr><tr class="titlebg"><td align="center" nowrap="nowrap">线上总计</td><td align="center" nowrap="nowrap">快钱</td><td align="center" nowrap="nowrap">支付宝</td><td align="center" nowrap="nowrap">平台余款</td><td align="center" nowrap="nowrap">激活卡</td><td align="center" nowrap="nowrap">其他</td><td align="center" nowrap="nowrap">线下总计</td><td align="center" nowrap="nowrap">本地缴费</td><td align="center" nowrap="nowrap">中心收费</td></tr><tr class="whbg" orgPath="01.25.01." planId="9e508516-5409-4b5d-a0d6-f86ba77eb79f" ><td align="center" nowrap="nowrap">1</td><td align="center" nowrap="nowrap">盐城2013年培训计划</td><td align="center" nowrap="nowrap">盐城市</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap"><a id="0-12" href="javascript:showDetail('0-12');">3</a></td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap">0</td><td align="center" nowrap="nowrap"><a id="0-15" href="javascript:showDetail('0-15');">3</a></td></tr><tr class="whbg" orgPath="all" planId="all"><td align="center"  nowrap="nowrap" colspan="3" >总计</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" ><a id="4-6" href="javascript:showDetail('4-6');">3</a></td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" >0</td><td align="center" nowrap="nowrap" ><a id="4-9" href="javascript:showDetail('4-9');">3</a></td></tr></table>", 2); 
    } 

}