easypoi导出,导入excel

在pom.xml引入easypoi的依赖包：

    <!--easypoi -->
		<dependency>
			<groupId>cn.afterturn</groupId>
			<artifactId>easypoi-base</artifactId>
			<version>3.2.0</version>
		</dependency>
		<dependency>
			<groupId>cn.afterturn</groupId>
			<artifactId>easypoi-web</artifactId>
			<version>3.2.0</version>
		</dependency>
		<dependency>
			<groupId>cn.afterturn</groupId>
			<artifactId>easypoi-annotation</artifactId>
			<version>3.2.0</version>
		</dependency>

Controller:

批量导出：

/**
	 * 批量导出数据,
	 * @param response
	 */
	@RequestMapping(value = "/downloadStuScoreWriter")  
    public void downloadStuScoreWriter(HttpServletResponse response,HttpServletRequest request,String ids) {  
		List<StuScore> am=null;
		if(ids==null||"".equals(ids)) {//查询所有数据
			am=stuScoreService.selectDcWriterAll();
		}else {//查询指定数据
			try {
				List<String> list = new ArrayList<>();
				String str[]=ids.split(",");
				for(int i=0,j=str.length;i<j;i++) {
					list.add(str[i]);
				}
				am=stuScoreService.selectDcWriterAllZd(list);
			} catch (NumberFormatException e) {
				e.printStackTrace();
			}
		}
        try {  
            String filename="笔试成绩表";
            if (isMSBrowsers.isMSBrowser(request)) {
				filename = URLEncoder.encode(filename, "UTF-8");
			} else {
				filename = new String(filename.getBytes("utf-8"), "ISO8859-1");
			}
            response.setContentType("application/ms-excel;charset=utf-8");
            response.setHeader("Content-disposition", "attachment;filename=" + filename + "." +"xls");// 设置头部信息  
            ServletOutputStream out=response.getOutputStream();
            Workbook wb=getExcelStuScoreWriter(am);
            wb.write(out);
    		out.flush();
    		out.close();
        } catch (IOException e) {
        	e.printStackTrace();
        } 
    }
	
	/**
	 * 封装
	 * @param l
	 * @return
	 */
	private Workbook getExcelStuScoreWriter(List<StuScore> stuScores) {
        List<ExcelExportEntity> colList = new ArrayList<ExcelExportEntity>();
        ExcelExportEntity colEntity = new ExcelExportEntity("序号", "xh");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        colEntity = new ExcelExportEntity("考场号", "roomCode");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        colEntity = new ExcelExportEntity("座位号", "seatNum");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        colEntity = new ExcelExportEntity("考生号", "ksh");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
    
        colEntity = new ExcelExportEntity("考生名称", "name");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        colEntity = new ExcelExportEntity("考生身份证号", "idnumber");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        colEntity = new ExcelExportEntity("语文成绩", "chinese");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        colEntity = new ExcelExportEntity("数学成绩", "math");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        colEntity = new ExcelExportEntity("英语成绩", "english");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        colEntity = new ExcelExportEntity("笔试总分", "bszf");
        colEntity.setNeedMerge(true);
        colList.add(colEntity);
        
        List<Map<String, Object>> list = new ArrayList<Map<String, Object>>();
        int i=1;
        for (StuScore s:stuScores) {
            Map<String, Object> valMap = new HashMap<String, Object>();
            valMap.put("xh",i++);
            valMap.put("roomCode",s.getRoomCode());
            valMap.put("seatNum",s.getSeatNum());
            valMap.put("ksh",s.getKsh());
            valMap.put("name",s.getName());
            valMap.put("idnumber",s.getIdnumber());
            valMap.put("chinese",s.getChinese());
            valMap.put("math",s.getMath());
            valMap.put("english",s.getEnglish());
            valMap.put("bszf",Integer.parseInt(s.getChinese().equals("")?"0":s.getChinese())+Integer.parseInt(s.getMath().equals("")?"0":s.getMath())+Integer.parseInt(s.getEnglish().equals("")?"0":s.getEnglish()));
	        list.add(valMap);
            }
        Workbook workbook = ExcelExportUtil.exportExcel(new ExportParams("笔试成绩表", "数据"), colList,list);
        return workbook;
    }

 批量导入：

/**
	 * *批量导入
	 * @param file
	 * @return
	 */
	@RequestMapping("/imports")
	@ResponseBody
	public MyAjaxResult imports(MultipartFile file) {
		ImportParams params = new ImportParams();
		List<Map<String, Object>> list = null;
		Map<String,Object> map;
		try {
			params.setTitleRows(1);
			params.setHeadRows(1);
			list = ExcelImportUtil.importExcel(file.getInputStream(), Map.class, params);
			
			map=majorService.imports(list,"1");
			
		} catch (Exception e) {
			e.printStackTrace();
			log.info("批量导入转换异常");
			return MyAjaxResult.fail_300("批量导入转换异常");
		}
		return MyAjaxResult.success(map);
	}