html table导出到Excel中，走后台保存文件，js并调用另保存

tableToExcel工具类，此工具类指定格式的表格进行转Excel

格式：其中不能带有thead，tbody和th标签

<table>
    <tr>
        <td>表头1</td>
        <td>表头2</td>
        <td>表头3</td>
        <td>表头4</td>
    </tr>
    <tr>
        <td>数据1</td>
        <td>数据2</td>
        <td>数据3</td>
        <td>数据4</td>
    </tr>    
    <tr>
        <td>数据1</td>
        <td>数据2</td>
        <td>数据3</td>
        <td>数据4</td>
    </tr>
</table>

工具类：

package com.zx.erjiqualitydata;

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

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

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.hssf.util.CellRangeAddress;
import org.apache.poi.ss.usermodel.CellStyle;
import org.apache.poi.ss.usermodel.Font;
import org.apache.poi.ss.usermodel.IndexedColors;
import org.apache.poi.ss.usermodel.Workbook;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.springframework.util.ClassUtils;
import org.springframework.web.context.request.RequestContextHolder;
import org.springframework.web.context.request.ServletRequestAttributes;

public class TableToExcel {
     /** 
     * @author lusong
     * @param sheetName 
     * @param html 
     * @param headNum表头的行数 
     * @throws FileNotFoundException 
     * zyn 
     * 2012-12-21 下午1:44:02 
     */  
    public static String tableToExcel(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);  
        HttpServletRequest request = ((ServletRequestAttributes)RequestContextHolder.getRequestAttributes()).getRequest();
        String filePath = request.getSession().getServletContext().getRealPath("/static/document");
        String path = filePath+"\"+sheetName+".xlsx";
        FileOutputStream os = new FileOutputStream(path);  
        SAXBuilder sb = new SAXBuilder();  
        try {  
            ByteArrayInputStream is = new ByteArrayInputStream(html.getBytes("UTF-8"));  
            Document document = sb.build(is);  
            //获取table节点  
            Element root = document.getRootElement();  
            //获取tr的list  
            List<Element> trList = root.getChildren("tr");  
            int[][] area = getCellArea(trList);  
            //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  
                int tdIndex = 0;  
                for(int ii=0;ii<area[i].length;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);  
                    }  
                    //如果对应的矩阵数字为1，则和横向前一单元格合并  
                    if(area[i][ii]==1){  
                        sheet.addMergedRegion(new CellRangeAddress(i,i,ii-1,ii));  
                    }else if(area[i][ii]==2){//如果对应的矩阵数字为2，则和纵向的前一单元格合并  
                        sheet.addMergedRegion(new CellRangeAddress(i-1,i,ii,ii));  
                    }else{//如果为0，显示td中对应的文字,td序号加1  
                        cell.setCellValue(getInnerText(tdList.get(tdIndex)));  
                        tdIndex ++;  
                    }  
                      
                }  
                  
            }  
        wb.write(os);  
        
        } catch (JDOMException e) {  
            e.printStackTrace();  
        } catch (IOException e) {  
            e.printStackTrace();  
        }
        return "static/document/"+sheetName+".xlsx"; 
    }  
      
    /** 
     * 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 int[][] 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){  
            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];  
        for(int i=0;i<trList.size();i++){  
            Element tr = trList.get(i);  
            List<Element> tdList = tr.getChildren("td");  
            //该行到ii个单元格为止被合并的单元格个数  
            int rowColspan = 0;  
            for(int ii=0;ii<tdList.size();ii++){  
                //本单元格跨度计算前的td数  
                int oldIndex = ii+rowColspan;  
                Element td = tdList.get(ii);  
                int colspan = Integer.valueOf(null==td.getAttributeValue("colspan")?"0":td.getAttributeValue("colspan"));  
                //colspan为0或者1证明未合并  
                colspan = colspan>1?colspan:1;  
                rowColspan += colspan-1;  
                //单元格需要被横向合并声明为1  
                for(int m=1;m<colspan;m++){  
                    area[i][oldIndex+m]=1;  
                }  
                int rowspan = Integer.valueOf(null==td.getAttributeValue("rowspan")?"0":td.getAttributeValue("rowspan"));  
                rowspan = rowspan>1?rowspan:1;  
                //单元格需要被纵向向合并声明为2  
                for(int m=1;m<rowspan;m++){  
                    area[m+i][oldIndex] = 2;  
                }  
            }  
        }  
        /*for(int a=0;a<area.length;a++){ 
            for(int b =0;b<area[0].length;b++){ 
                System.out.print(area[a][b]); 
            } 
            System.out.println(""); 
        }*/  
        return area;  
    }  
      
      
    /**- 
     * 设置表头样式 
     * @param wb 
     * @return 
     */  
    private static CellStyle createHeadStyle(Workbook wb){  
        CellStyle style = wb.createCellStyle();  
        Font headerFont = wb.createFont();  
        headerFont.setBoldweight(Font.BOLDWEIGHT_BOLD);  
        style.setAlignment(CellStyle.ALIGN_CENTER);  
        style.setFillForegroundColor(IndexedColors.LIGHT_CORNFLOWER_BLUE.getIndex());  
        style.setFillPattern(CellStyle.SOLID_FOREGROUND);  
        style.setFont(headerFont);  
  
        style.setBorderRight(CellStyle.BORDER_THIN);  
        style.setRightBorderColor(IndexedColors.BLACK.getIndex());  
        style.setBorderBottom(CellStyle.BORDER_THIN);  
        style.setBottomBorderColor(IndexedColors.BLACK.getIndex());  
        style.setBorderLeft(CellStyle.BORDER_THIN);  
        style.setLeftBorderColor(IndexedColors.BLACK.getIndex());  
        style.setBorderTop(CellStyle.BORDER_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.setBoldweight(Font.BOLDWEIGHT_NORMAL);  
        style.setAlignment(CellStyle.ALIGN_CENTER);  
        style.setFillForegroundColor(IndexedColors.LIGHT_GREEN.getIndex());  
        style.setFillPattern(CellStyle.SOLID_FOREGROUND);  
        style.setFont(headerFont);  
  
        style.setBorderRight(CellStyle.BORDER_THIN);  
        style.setRightBorderColor(IndexedColors.BLACK.getIndex());  
        style.setBorderBottom(CellStyle.BORDER_THIN);  
        style.setBottomBorderColor(IndexedColors.BLACK.getIndex());  
        style.setBorderLeft(CellStyle.BORDER_THIN);  
        style.setLeftBorderColor(IndexedColors.BLACK.getIndex());  
        style.setBorderTop(CellStyle.BORDER_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 {  
//        // TODO Auto-generated method stub  
//        TableToExcelUtil tu = new TableToExcelUtil();  
    //  System.out.println(tu.getInnerHtml("<td><a>1</a></td>"));  
        String tableHtmlString = "<table class="zx_total_table dataTable no-footer" style=" 100%; margin: 0px auto;" id="rf_table" role="grid"><thead><tr role="row" style="height: 0px;"><th class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 241px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;">医疗机构名称</div></th><th class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 162px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;">级别</div></th><th class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 83px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;">类别</div></th><th class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 83px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;">属性</div></th><th class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 163px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;">所有制</div></th><th class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 441px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;">所在地</div></th></tr></thead><tbody><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">省三院</td><td>二级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-长安区</td></tr><tr role="row" class="even"><td class="sorting_1">省三院</td><td>二级医院</td><td>综合</td><td>公立</td><td>阿斯蒂芬</td><td>北京-北京市-东城区</td></tr></tbody>";
        
        
        //tableToExcel("缴费统计", "<table ><tr role="row" style="height: 0px;"><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 174px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;"></div></td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 174px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;"></div></td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 89px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;"></div></td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 90px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;"></div></td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 174px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;"></div></td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 472px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;"><div class="dataTables_sizing" style="height:0;overflow:hidden;"></div></td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">省三院</td><td>二级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-长安区</td></tr><tr role="row" class="even"><td class="sorting_1">省三院</td><td>二级医院</td><td>综合</td><td>公立</td><td>阿斯蒂芬</td><td>北京-北京市-东城区</td></tr></table>", 1);  
        tableToExcel("缴费统计", "<table class="zx_total_table dataTable no-footer" style=" 100%; margin: 0px auto;" id="rf_table" role="grid"><tr role="row" style="height: 0px;"><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 241px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;">医疗机构名称</td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 162px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;">级别</td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 83px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;">类别</td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 83px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;">属性</td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 163px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;">所有制</td><td class="sorting" aria-controls="rf_table" rowspan="1" colspan="1" style=" 441px; padding-top: 0px; padding-bottom: 0px; border-top- 0px; border-bottom- 0px; height: 0px;">所在地</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">河北二院</td><td>三级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="even"><td class="sorting_1">河北二院</td><td>二级医院</td><td>综合</td><td>公立</td><td>私有制</td><td>河北省-石家庄市-裕华区</td></tr><tr role="row" class="odd"><td class="sorting_1">省三院</td><td>二级医院</td><td>综合</td><td>公立</td><td>公有制</td><td>河北省-石家庄市-长安区</td></tr><tr role="row" class="even"><td class="sorting_1">省三院</td><td>二级医院</td><td>综合</td><td>公立</td><td>阿斯蒂芬</td><td>北京-北京市-东城区</td></tr></table>", 1); 
    }  
    
    
}