springMVC+poi导入

1、jsp新加一个form表单，如图所示

		<form method="POST" style="float: right" enctype="multipart/form-data" id="forms" action="hrm/importexcel.do">  
            <label>上传文件: </label>
            <input id="upfile" type="file" name="upfile">
<!--        <input type="submit" value="表单提交" onclick="return checkData()"> -->   
      		<input  type="button" value="导入科室考核成绩" id="btn" name="btn" >  
    		</form> 

2、通用的导出工具，写导出方法时直接调用这个就行，不用改

package com.minimax.code.service.hrm;

import java.io.IOException;  
import java.io.InputStream;  
import java.text.DecimalFormat;  
import java.text.SimpleDateFormat;  
import java.util.ArrayList;  
import java.util.List;  
  
import org.apache.poi.hssf.usermodel.HSSFWorkbook;  
import org.apache.poi.ss.usermodel.Cell;  
import org.apache.poi.ss.usermodel.Row;  
import org.apache.poi.ss.usermodel.Sheet;  
import org.apache.poi.ss.usermodel.Workbook;  
import org.apache.poi.xssf.usermodel.XSSFWorkbook;  
  
  
public class ImportExcelUtil {  
      
    private final static String excel2003L =".xls";    //2003- 版本的excel  
    private final static String excel2007U =".xlsx";   //2007+ 版本的excel  
      
    /** 
     * 描述：获取IO流中的数据，组装成List<List<Object>>对象 
     * @param in,fileName 
     * @return 
     * @throws IOException  
     */  
    public  List<List<Object>> getBankListByExcel(InputStream in,String fileName) throws Exception{  
        List<List<Object>> list = null;  
          
        //创建Excel工作薄  
        Workbook work = this.getWorkbook(in,fileName);  
        if(null == work){  
            throw new Exception("创建Excel工作薄为空！");  
        }  
        Sheet sheet = null;  
        Row row = null;  
        Cell cell = null;  
          
        list = new ArrayList<List<Object>>();  
        //遍历Excel中所有的sheet  
        for (int i = 0; i < work.getNumberOfSheets(); i++) {  
            sheet = work.getSheetAt(i);  
            if(sheet==null){continue;}  
              
            //遍历当前sheet中的所有行  
            for (int j = sheet.getFirstRowNum(); j < sheet.getLastRowNum()+1; j++) {  
                row = sheet.getRow(j);  
                if(row==null||row.getFirstCellNum()==j){continue;}  
                  
                //遍历所有的列  
                List<Object> li = new ArrayList<Object>();  
                for (int y = row.getFirstCellNum(); y < row.getLastCellNum(); y++) {  
                    cell = row.getCell(y);  
                    li.add(this.getCellValue(cell));  
                }  
                list.add(li);  
            }  
        } 
        in.close();  
        return list;  
    }  
      
    /** 
     * 描述：根据文件后缀，自适应上传文件的版本  
     * @param inStr,fileName 
     * @return 
     * @throws Exception 
     */  
    public  Workbook getWorkbook(InputStream inStr,String fileName) throws Exception{  
        Workbook wb = null;  
        String fileType = fileName.substring(fileName.lastIndexOf("."));  
        if(excel2003L.equals(fileType)){  
            wb = new HSSFWorkbook(inStr);  //2003-  
        }else if(excel2007U.equals(fileType)){  
            wb = new XSSFWorkbook(inStr);  //2007+  
        }else{  
            throw new Exception("解析的文件格式有误！");  
        }  
        return wb;  
    }  
  
    /** 
     * 描述：对表格中数值进行格式化 
     * @param cell 
     * @return 
     */  
    public  Object getCellValue(Cell cell){  
        Object value = null;  
        DecimalFormat df = new DecimalFormat("0");  //格式化number String字符  
        SimpleDateFormat sdf = new SimpleDateFormat("yyy-MM-dd");  //日期格式化  
        DecimalFormat df2 = new DecimalFormat("0.00");  //格式化数字  
          
        switch (cell.getCellType()) {  
        case Cell.CELL_TYPE_STRING:  
            value = cell.getRichStringCellValue().getString();  
            break;  
        case Cell.CELL_TYPE_NUMERIC:  
            if("General".equals(cell.getCellStyle().getDataFormatString())){  
                value = df.format(cell.getNumericCellValue());  
            }else if("m/d/yy".equals(cell.getCellStyle().getDataFormatString())){  
                value = sdf.format(cell.getDateCellValue());  
            }else{  
                value = df2.format(cell.getNumericCellValue());  
            }  
            break;  
        case Cell.CELL_TYPE_BOOLEAN:  
            value = cell.getBooleanCellValue();  
            break;  
        case Cell.CELL_TYPE_BLANK:  
            value = "";  
            break;  
        default:  
            break;  
        }  
        return value;  
    }  
}

3、导入方法

	@RequestMapping("/importexcel")    
	public void importexcel(HttpServletRequest request,HttpServletResponse response,HttpSession session)throws Exception{
	     MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;     
	     HrmUserInfo addHui=(HrmUserInfo)session.getAttribute(SysConfig.USER_SESSION); 
	     InputStream in =null;  
	     List<List<Object>> listob = null;  
	     MultipartFile file = multipartRequest.getFile("upfile");  
		 SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//设置日期格式
	     if(file.isEmpty()){  
	         throw new Exception("文件不存在！");  
	     }  
	     in = file.getInputStream();  
	     listob = new ImportExcelUtil().getBankListByExcel(in,file.getOriginalFilename());
	     in.close();  
	     //该处可调用service相应方法进行数据保存到数据库中，现只对数据输出  
	     for (int i = 0; i < listob.size(); i++) {  
	    	  List<Object> lo = listob.get(i);  
	    	  List<Map<String,Object>> expeEditList=iHrmUserInfoExpeEditService.selectHrmUserInfoExpeSon(122);
		        Integer few=iHrmUserInfoExpeDao.querySequence();
		        	for(int j=0;j<expeEditList.size();j++){
						//key
						String key=expeEditList.get(j).get("ID").toString();
						//数据
						HrmUserInfoExpe huie=new HrmUserInfoExpe();
						huie.setId((iHrmUserInfoExpeDao.selectMaxId()+1+j+(i*4)));
						huie.setUser_id(String.valueOf(lo.get(0)));
						huie.setEdit_id(Integer.parseInt(key));
						huie.setFew(few);
						huie.setAdd_date(df.format(new Date()));
						huie.setAdd_person(addHui.getUser_id());
						huie.setDelete_flag("0");
						huie.setValue(String.valueOf(lo.get(j+1)));
						iJdbcBaseDao.saveUtil(huie);
					}
		    	    PrintWriter out = null;  
		    	    response.setCharacterEncoding("utf-8");  //防止ajax接受到的中文信息乱码  
		    	    out = response.getWriter();  
		    	    out.print("文件导入成功！");  
		    	    out.flush();  
		    	    out.close();  
	     }
	}