SpringBoot中导入Excel的总结

        <dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml</artifactId>
		</dependency>
		<dependency>
			<groupId>org.apache.poi</groupId>
			<artifactId>poi-ooxml-schemas</artifactId>
		</dependency>

/**
     * 上传excel文件 
     * @author SHF
     * @version 创建时间：2018年12月14日  上午9:28:14
     *  @param excelInput  
     *  @param type  1:大客户经理 2内部人员'
     *  @return
     * @throws Exception 
     */
    @RequestMapping("/uploadExcel")
    @ResponseBody
    public Object uploadExcel(@RequestParam("excelInput") MultipartFile excelInput,Integer type) throws Exception{
    	// 检查文件类型
		String fileName = checkFile(excelInput);
		if("1".equals(fileName) || "2".equals(fileName)) {
			return new SuccessTip("请上传Excel格式的文件");
		}
		Workbook workbook = null;
		InputStream inputStream = excelInput.getInputStream();
		List<String[]> list = new ArrayList<String[]>();
		
		try {
			workbook = WorkbookFactory.create(inputStream);
			int numberOfSheets = workbook.getNumberOfSheets();
			if (numberOfSheets > 0) {
				Sheet sheet = workbook.getSheetAt(0);
				if (null != sheet) {
					// 获得当前sheet的开始行
					int firstRowNum = sheet.getFirstRowNum();
					// 获得当前sheet的结束行
					int lastRowNum = sheet.getLastRowNum();

					for (int rowNum = firstRowNum; rowNum <= lastRowNum; rowNum++) {
						// 获得当前行
						Row row = sheet.getRow(rowNum);
						if (row == null) {
							continue;
						}
						// 获得当前行的开始列
						int firstCellNum = row.getFirstCellNum();
						// 获得当前行的列数
						int lastCellNum = row.getLastCellNum();
						if(lastCellNum != 3) {
							//必须要有三列数据
							return new SuccessTip("上传的数据不能有为空值！");
						}
						String[] cells = new String[row.getLastCellNum()];
						// 循环当前行
						for (int cellNum = firstCellNum; cellNum < lastCellNum; cellNum++) {
							Cell cell = row.getCell(cellNum);
							cells[cellNum] = getCellValue(cell);
						}
						list.add(cells);
					}
				}
			}
			
			//插入数据
			if (!list.isEmpty()) {
				for (String[] strs : list) {
					Integer userId = ShiroKit.getUser().getId();
			    	Date date = new Date();
					String name = strs[0];
					String dept_userType = strs[1];
					String phone = strs[2];
					
					/*if(StringUtils.isBlank(phone)) {
						//throw new Exception("手机号码不能为空");
						return new SuccessTip("手机号码不能为空");
					}*/
					ProjectInnerUser tProjectInnerUser = tProjectInnerUserService.selectOne(new EntityWrapper<ProjectInnerUser>().eq("phone", phone).eq("is_enable", 1).eq("is_deleted", 0));
					if(tProjectInnerUser == null) {
						tProjectInnerUser = new ProjectInnerUser();
						tProjectInnerUser.setName(name);
						tProjectInnerUser.setPhone(phone);
						if(type == 1) {
							tProjectInnerUser.setDept(dept_userType);
						}else {
							tProjectInnerUser.setUserType(dept_userType);
						}
						tProjectInnerUser.setType(type);
						tProjectInnerUser.setRemark("excel导入的数据");
						tProjectInnerUser.setIsDeleted(0);
						tProjectInnerUser.setIsEnable(1);
						tProjectInnerUser.setCreator(userId);
						tProjectInnerUser.setCreated(new Date());
						tProjectInnerUser.setModifier(userId);
						tProjectInnerUser.setModified(date);
						tProjectInnerUserService.insert(tProjectInnerUser);
					}else {
						tProjectInnerUser.setName(name);
						if(type == 1) {
							tProjectInnerUser.setDept(dept_userType);
						}else {
							tProjectInnerUser.setUserType(dept_userType);
						}
						tProjectInnerUser.setType(type);
						tProjectInnerUser.setRemark("excel导入的数据");
						tProjectInnerUser.setModifier(userId);
						tProjectInnerUser.setModified(date);
						tProjectInnerUserService.updateById(tProjectInnerUser);
					}
					
					
				}
			}
			
			
		} catch (EncryptedDocumentException e1) {
			e1.printStackTrace();
		} catch (InvalidFormatException e1) {
			e1.printStackTrace();
		} finally {
			if (null != workbook) {
				workbook.close();
			}
			if (null != inputStream) {
				inputStream.close();
			}
		}
		
    	return SUCCESS_TIP;
    }
    
    public static String checkFile(MultipartFile file) throws IOException {
		// 判断文件是否存在
		if (null == file) {
			//throw new GunsException(BizExceptionEnum.FILE_NOT_FOUND);
			return "1";//文件不存在
		}
		// 获得文件名
		String fileName = file.getOriginalFilename();
		// 判断文件是否是excel文件
		if (!fileName.endsWith("xls") && !fileName.endsWith("xlsx")) {
			//throw new GunsException(BizExceptionEnum.UPLOAD_NOT_EXCEL_ERROR);
			return "2";//上传的不是excel文件
		}
		return fileName;
	}
    
    /**
	 * 根据不同类型获取值
	 * 
	 * @param cell
	 * @return
	 */
	public static String getCellValue(Cell cell) {
		String cellValue = "";
		if (cell == null) {
			return cellValue;
		}
		// 判断数据的类型
		switch (cell.getCellTypeEnum()) {
		case NUMERIC: // 数字
			cellValue = stringDateProcess(cell);
			break;
		case STRING: // 字符串
			cellValue = String.valueOf(cell.getStringCellValue());
			break;
		case BOOLEAN: // Boolean
			cellValue = String.valueOf(cell.getBooleanCellValue());
			break;
		case FORMULA: // 公式
			cellValue = String.valueOf(cell.getCellFormula());
			break;
		case BLANK: // 空值
			cellValue = "";
			break;
		case ERROR: // 故障
			cellValue = "非法字符";
			break;
		default:
			cellValue = "未知类型";
			break;
		}
		return cellValue;
	}
	
	/**
	 * 时间格式转换
	 * 
	 * @param cell
	 * @return
	 */
	public static String stringDateProcess(Cell cell) {
		String result = new String();
		if (HSSFDateUtil.isCellDateFormatted(cell)) {// 处理日期格式、时间格式
			SimpleDateFormat sdf = null;
			if (cell.getCellStyle().getDataFormat() == HSSFDataFormat.getBuiltinFormat("h:mm")) {
				sdf = new SimpleDateFormat("HH:mm ");
			} else {// 日期
				sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
			}
			Date date = cell.getDateCellValue();
			result = sdf.format(date);
		} else if (cell.getCellStyle().getDataFormat() == 58) {
			// 处理自定义日期格式：m月d日(通过判断单元格的格式id解决，id的值是58)
			SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd hh:mm:ss");
			double value = cell.getNumericCellValue();
			Date date = org.apache.poi.ss.usermodel.DateUtil.getJavaDate(value);
			result = sdf.format(date);
		} else {
			double value = cell.getNumericCellValue();
			CellStyle style = cell.getCellStyle();
			DecimalFormat format = new DecimalFormat();
			String temp = style.getDataFormatString();
			// 单元格设置成常规
			if (temp.equals("General")) {
				format.applyPattern("#");
			}
			result = format.format(value);
		}

		return result;
	}

@layout("/common/_container.html"){
<script src="${ctxPath}/static/js/jquery.form.js"></script>
<div class="ibox float-e-margins">
    <div class="ibox-content">
        <div class="form-horizontal">
        	<form id="form1" method="post" enctype="multipart/form-data">
	        	<input type="hidden" value="${type!}" id="type" name="type" accept="xlsx">
	        	<input type="file" class="form-control" name="excelInput" id="excelInput" >
	        	<p>长传文件的格式:</p>
	        	<div style="font-size:16px;">
				  <p style="float:left;width:100px;">姓名</p>
				  <p style="float:left;width:100px;">部门</p>
				  <p style="float:left;width:100px;">手机号码 </p>
				</div>
	            <div class="row">
	                <div class="flexca">
	                	<input type="reset" class="btn btn-warning" onClick="closePag()" value="取消">
	                	<input type="submit" id="tj" class="btn btn-primary" value="提交" style="margin-left:65px;">
	                </div>
	            </div>
        	</form>
        </div>
    </div>
</div>
<script type="text/javascript">
	var type = null;
	
	$(function(){
		 type = $("#type").val();//全局配置文件的类型 1：表示从大客户经理页面跳转过来的  2：表示从内部员工页面跳转过来的
		/** 验证文件是否导入成功  */
		var options = {
		    target:'#form1',
		    url:Feng.ctxPath + "/bigUser/uploadExcel",
		    success:function(data) {
		        if(data.code == 200){
		        	Feng.success("上传成功!");
		        }else{
		        	Feng.error("上传失败！"+data.message);
		        }
		    	closePag();
		    }
		};
		$('#form1').ajaxForm(options);     
	});
	//关闭弹框
	function closePag(){
		if(type == 1){
			parent.layer.close(window.parent.TBigUser.layerIndex);
			window.parent.TBigUser.table.refresh();
		}else{
			parent.layer.close(window.parent.InsideUser.layerIndex);
			window.parent.InsideUser.table.refresh();
		}
	}
//-->
</script>
@}

$(function(){
		 type = $("#type").val();//全局配置文件的类型 1：表示从大客户经理页面跳转过来的  2：表示从内部员工页面跳转过来的
		 $("#tj").click(function () {
	            var formData = new FormData($('#form1')[0]);
	            $.ajax({
	                type: 'post',
	                url: Feng.ctxPath + "/bigUser/uploadExcel",
	                data: formData,
	                cache: false,
	                processData: false,
	                contentType: false,
	            }).success(function (data) {
	            	if(data.code == 200){
	 		        	Feng.success("上传成功!");
	 		        }else{
	 		        	Feng.error("上传失败！"+data.message);
	 		        }
	 		    	closePag();
	            }).error(function () {
	                alert("上传失败");
	            });
	        }); 
		  
	});