Java excel导出笔记

        //导出表格数据
            getInventoryItemData:function(){
                var warehouse = YAHOO.util.Dom.get("warehouse").classObj.get('value').id;
                 window.location.href=PORTAL.constant.CONTEXT_PATH+"/core/wm/materialInventory/inventoryStockAction!getInventoryItemData.action?warehouse="+warehouse;

            },

	/**
	 * 查询物料盘点列表并导出
	 * @throws Exception 
	 */
	public void getInventoryItemData(){
		
		try {
			HttpServletRequest request = ServletActionContext.getRequest();
			String warehouse = request.getParameter("warehouse");
			SiteBO siteBo = this.getCurrentSite();
			UserBO userBO = this.getSessionUser();
			 List<Object[]> datalist;
			datalist = inventoryStockActionService.getInventoryItemData(warehouse, siteBo, userBO);
			List<String> rowNames=new ArrayList<String>(Arrays.asList("序号"," 物料编号 ","物料名称","工单号","批次","规格型号","单位","数量"));	
//			List<Object[]> objList=mapToObject(datalist,rowNames);
	        export("物料盘点列表", rowNames,datalist);
		} catch (Exception ex) {
			this.simpleResponse(this.getJsonText(ex));
		}
		

	}


	 /* 
     * 导出数据 
     */  
    public void export(String title,List<String> rowName,List<Object[]> dataList){  
    	SXSSFWorkbook workbook = new SXSSFWorkbook();                     // 创建工作簿对象 
    	 Sheet sheet = workbook.createSheet(title);                  // 创建工作表  
        try{  
            // 产生表格标题行  
        	Row rowm = sheet.createRow(0);  
        	Cell cellTiltle = rowm.createCell(0);  
              
            //sheet样式定义【getColumnTopStyle()/getStyle()均为自定义方法 - 在下面  - 可扩展】  
            XSSFCellStyle columnTopStyle = this.getColumnTopStyle(workbook);//获取列头样式对象  
            XSSFCellStyle style = this.getStyle(workbook);                  //单元格样式对象  
              
            sheet.addMergedRegion(new CellRangeAddress(0, 1, 0, (rowName.size()-1)));    
            cellTiltle.setCellStyle(columnTopStyle);  
            cellTiltle.setCellValue(title);  
              
            // 定义所需列数  
            int columnNum = rowName.size();  
            Row rowRowName = sheet.createRow(2);                // 在索引2的位置创建行(最顶端的行开始的第二行)  
              
            // 将列头设置到sheet的单元格中  
            for(int n=0;n<columnNum;n++){  
            	Cell  cellRowName = rowRowName.createCell(n);               //创建列头对应个数的单元格  
                cellRowName.setCellType(HSSFCell.CELL_TYPE_STRING);             //设置列头单元格的数据类型  
                HSSFRichTextString text = new HSSFRichTextString(rowName.get(n));  
                cellRowName.setCellValue(text);                                 //设置列头单元格的值  
                cellRowName.setCellStyle(columnTopStyle);                       //设置列头单元格样式  
            }  
              
            //将查询出的数据设置到sheet对应的单元格中  
            for(int i=0;i<dataList.size();i++){  
                Object[] obj=dataList.get(i);//遍历每个对象  
                Row row = sheet.createRow(i+3);//创建所需的行数  
                for(int j=0; j<obj.length; j++){  
                	Cell  cell = null;   //设置单元格的数据类型  
                    if(j == 0){  
                        cell = row.createCell(j,HSSFCell.CELL_TYPE_NUMERIC);  
                        cell.setCellValue(i+1);   
                    }else{  
                        cell = row.createCell(j,HSSFCell.CELL_TYPE_STRING);  
                        cell.setCellValue(String.valueOf(obj[j]));                       //设置单元格的值  
                    }  
                    cell.setCellStyle(style);                                   //设置单元格样式  
                }  
            }  
            if(workbook !=null){  
                try  
                {  
                    String fileName = "Excel-" + String.valueOf(System.currentTimeMillis()).substring(4, 13) + ".xlsx";  
                    String headStr = "attachment; filename=\"" + fileName + "\"";  
                    HttpServletResponse response = ServletActionContext.getResponse();
                    response.reset();
                    response.setContentType("APPLICATION/OCTET-STREAM");  
                    response.setHeader("Content-Disposition", headStr);  
                    OutputStream out = response.getOutputStream();  
                    workbook.write(out);  
                }  
                catch (IOException e)  
                {  
                    e.printStackTrace();  
                }  
            }  
  
        }catch(Exception e){  
            e.printStackTrace();  
        }  
    }  
    
    /*  
     * 列头单元格样式 
     */      
    public XSSFCellStyle getColumnTopStyle(SXSSFWorkbook workbook) {  
          
          // 设置字体  
          XSSFFont font = (XSSFFont) workbook.createFont();
          //设置字体大小  
          font.setFontHeightInPoints((short)11);  
          //字体加粗  
          font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);  
          //设置字体名字   
          font.setFontName("Courier New");  
          //设置样式;   
          XSSFCellStyle style = (XSSFCellStyle) workbook.createCellStyle();
          //设置底边框;   
          style.setBorderBottom(HSSFCellStyle.BORDER_THIN);  
          //设置底边框颜色;    
          style.setBottomBorderColor(HSSFColor.BLACK.index);  
          //设置左边框;     
          style.setBorderLeft(HSSFCellStyle.BORDER_THIN);  
          //设置左边框颜色;   
          style.setLeftBorderColor(HSSFColor.BLACK.index);  
          //设置右边框;   
          style.setBorderRight(HSSFCellStyle.BORDER_THIN);  
          //设置右边框颜色;   
          style.setRightBorderColor(HSSFColor.BLACK.index);  
          //设置顶边框;   
          style.setBorderTop(HSSFCellStyle.BORDER_THIN);  
          //设置顶边框颜色;    
          style.setTopBorderColor(HSSFColor.BLACK.index);  
          //在样式用应用设置的字体;    
          style.setFont(font);  
          //设置自动换行;   
          style.setWrapText(false);  
          //设置水平对齐的样式为居中对齐;    
          style.setAlignment(HSSFCellStyle.ALIGN_CENTER);  
          //设置垂直对齐的样式为居中对齐;   
          style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);  
            
          return style;  
            
    }  
      
    /*   
     * 列数据信息单元格样式 
     */    
    public XSSFCellStyle getStyle(SXSSFWorkbook workbook) {  
          // 设置字体  
    	XSSFFont font = (XSSFFont) workbook.createFont();  
          //设置字体大小  
          //font.setFontHeightInPoints((short)10);  
          //字体加粗  
          //font.setBoldweight(HSSFFont.BOLDWEIGHT_BOLD);  
          //设置字体名字   
          font.setFontName("Courier New");  
          //设置样式;   
          XSSFCellStyle style = (XSSFCellStyle) workbook.createCellStyle();  
          //设置底边框;   
          style.setBorderBottom(HSSFCellStyle.BORDER_THIN);  
          //设置底边框颜色;    
          style.setBottomBorderColor(HSSFColor.BLACK.index);  
          //设置左边框;     
          style.setBorderLeft(HSSFCellStyle.BORDER_THIN);  
          //设置左边框颜色;   
          style.setLeftBorderColor(HSSFColor.BLACK.index);  
          //设置右边框;   
          style.setBorderRight(HSSFCellStyle.BORDER_THIN);  
          //设置右边框颜色;   
          style.setRightBorderColor(HSSFColor.BLACK.index);  
          //设置顶边框;   
          style.setBorderTop(HSSFCellStyle.BORDER_THIN);  
          //设置顶边框颜色;    
          style.setTopBorderColor(HSSFColor.BLACK.index);  
          //在样式用应用设置的字体;    
          style.setFont(font);  
          //设置自动换行;   
          style.setWrapText(false);  
          //设置水平对齐的样式为居中对齐;    
          style.setAlignment(HSSFCellStyle.ALIGN_CENTER);  
          //设置垂直对齐的样式为居中对齐;   
          style.setVerticalAlignment(HSSFCellStyle.VERTICAL_CENTER);    
          return style;  
      
    }