Java excelエクスポートは2007以上のバージョンをサポートしています

  .  sheet （          sheet   ,   ）

   XSSFSheet sheet1 = createSheet(wb, "   ");
   XSSFSheet sheet2 = createSheet(wb, "   ");
   
 2.1        createSheet（）   ：  sheet   ，        

  public XSSFSheet createSheet(XSSFWorkbook wb,String sheetName){
      wb.createSheet(sheetName);
     //  sheet     
     sheet.setHorizontallyCenter(true);
     //         （           ）
      sheet.setFitToPage(false);
      //  excel，  excel        
       sheet.setForceFormulaRecalculation(true);
     //      
     XSSFPrintSetup ps = sheet.getPrintSetup();
     ps.setLandscape(true); // true：    ，false：     ，      ，          
     ps.setPaperSize(HSSFPrintSetup.A4_PAPERSIZE); //         A4   
     return sheet; }
 3.//        
     XSSFFont    font =  wb.cteateFont();
   font.setFontName("  ");
   //    
    font.setColor(IndexedColors.WHITE.getIndex());
    //                 list
    
         genExcel(wb,sheet,list);  （     ：      ，    ）
  OutputStream os=null;
  HttpServletResponse response=null;
        try{
         response=ServletActionContext.getResponse();
         os=response.getOutputStream();
         response.reset();
         //     
         response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet;charset=utf-8");
         String filename="java"+new date(new SimpleFormat("yyyy-MM-dd"))+"xlsx";
         filename=URLEncoder.encode(filename,"utf-8");
         response.setHeader("content-disposition","filename=" + fileName);
         wb.write(os);
         catch (Exception e) {
}finally{
    try {
        os.flush();
        os.close();
    } catch (Exception e2) {
    }
        }
    }
public  void genExcel(XSSFWorkbook workbook, XSSFSheet sheet,List list) {
      XSSFCellStyle headStyle = haveHeadStyle(workbook); //      
     XSSFCellStyle contextStyle = haveNormalStyle(workbook);//      
     XSSFCellStyle footStyle = haveRemarkStyle(workbook);//      
     XSSFCellStyle pinkStyle = haveExceptionStyle(workbook);//      
     //               new CellRangeAddress
      CellRangeAddress cra = new CellRangeAddress(
            list.size() + 1, //first row
            list.size() + 2, //last row
            0,
            column_title.length-1
    );
    sheet.addMergedRegion(cra);
     //   RegionUtil                          
    //   
    RegionUtil.setBorderBottom(6, cra, sheet, workbook);
   //   
    RegionUtil.setBorderLeft(6, cra, sheet, workbook);
    //   
    RegionUtil.setBorderTop(6, cra, sheet, workbook);
    //   
    RegionUtil.setBorderRight(6, cra, sheet, workbook);
//          
    XSSFRow row    =     sheet.createRow(0);
    XSSFCell cell=null;
    for(int i=0;i