java jxl实现通用导入excel

jdk1.8

包：jxl-2.6.12.jar、commons-beanutils-1.9.3.jar

1、定义属性模型AttributeModel.java

public class AttributeModel {

    /**
     * @param attribute 属性 eg：age
     * @param name 名称 eg：年龄
     * @param hasWarn 标红提醒 eg：true
     * */
    public AttributeModel(String attribute, String name, Boolean hasWarn){
        this.attribute = attribute;
        this.name = name;
        if(hasWarn){
            this.hasWarn = hasWarn;
        }
    }
    // excel表头
    private String name;
    // 实体类属性名
    private String attribute;
    // 是否提醒必填
    private Boolean hasWarn = false;

    public String getName() {
        return name;
    }

    public String getAttribute() {
        return attribute;
    }

    public Boolean isHasWarn() {
        return hasWarn;
    }

}

2、定义attributeList，也就是需要导入的字段和中文名，为提供导入的模板做准备

/**
	 * @doc会员导入
     * 数据第三个字符串是为了设置导出excel是单元格样式，true就标红提醒必填，没这需求可以不加
	 **/
	public static List getMemberImportConstant() {
		List attributeList = new ArrayList<>();
		attributeList.add(new AttributeModel("memberName","会员名", true));
		attributeList.add(new AttributeModel("idCar", "身份证号", true));
		attributeList.add(new AttributeModel("birthday", "生日", false));
		attributeList.add(new AttributeModel("sex", "性别", true));
		attributeList.add(new AttributeModel("phone", "手机号", true));
		return attributeList;
	}

 3、定义一个示例数据，方便用户参考，这一步非必须

/**
	 * @doc 会员信息导入 案例
	 **/
	public static List getMemberImportExample() {
		Memberexample = new Member();
		List exampleList = new ArrayList();
		example.setMemberName("张三");
		example.setIdCar("410*****0012");
		example.setSex("男");
        example.setPhone("1388888888");
        example.setBirthday("1999-8-8");
		exampleList.add(example);
		return exampleList;
	}

4、导出模板只需传入第二部准备好的示例数据（Listllist）和定义好的导出字段（ListattributeList）和 response

/**
	 * 用于表头导出用
	 * @param response
	 * @parm list 数据集合
     * @parm attributeList 属性模型集合
	 */
	public  void writeHeadToFile(List list, List attributeList, HttpServletResponse response) {

		if (CollectionUtils.isEmpty(attributeList)) {
			return;
		}
		try {
			WritableWorkbook book = Workbook.createWorkbook(response.getOutputStream());
			// 创建一个工作区。
			WritableSheet sheet = book.createSheet("第一页", 0);
			// 在工作区上面添加内容
			try {
				// 处理第一行,标题
				Label newLabel = null;// new Label(j, i, String.valueOf(j));
				for (int i = 0; i < attributeList.size(); i++) {
					Boolean hasRed = attributeList.get(i).getHasWarn();
					newLabel = new Label(i, FIRST_ROW, attributeList.get(i).getName(),getHeaderCellStyle(hasRed));
					sheet.addCell(newLabel);
				}
				if (!CollectionUtils.isEmpty(list)) {
					Object param = null;
					for (int i = FIRST_ROW + 1; i <= list.size(); i++) {
						T t = list.get(i - 1);
						Map properties = conversionToMapByTool(t);
						for (int j = 0; j < attributeList.size(); j++) {
							param = properties.get(attributeList.get(j).getAttribute());
							newLabel = new Label(j, i, objToString(param));
							sheet.addCell(newLabel);
						}
					}
				}
			} catch (RowsExceededException e) {
				logger.error("行或列参数错误！{}", e);
			} catch (WriteException e) {
				logger.error("写入失败！{}", e);
			} catch (Exception e) {
				logger.error("写入失败！{}", e);
			} finally {
				if (book != null) {
					book.write();
					try {
						book.close();
					} catch (WriteException e) {
						logger.error("文件关闭失败！{}", e);
					}
				}
			}
		} catch (IOException e) {
			logger.error("创建文件失败！{}", e);
		}
	}

private  Map conversionToMapByTool(T bean) throws Exception {
		Map map = new HashMap();
		PropertyUtilsBean propertyUtilsBean = new PropertyUtilsBean();
		PropertyDescriptor[] descriptors = propertyUtilsBean.getPropertyDescriptors(bean);

		for (PropertyDescriptor d : descriptors) {
			String fieldName = d.getName();
			Object value = propertyUtilsBean.getNestedProperty(bean, fieldName);
			if (!"class".equals(fieldName))
				map.put(fieldName, value);
		}
		return map;
	}

/**
	 * 表头单元格样式的设定
	 */
	public WritableCellFormat getHeaderCellStyle(Boolean hasRed){

		/*
		 * WritableFont.createFont("宋体")：设置字体为宋体
		 * 10：设置字体大小
		 * WritableFont.BOLD:设置字体加粗（BOLD：加粗     NO_BOLD：不加粗）
		 * false：设置非斜体
		 * UnderlineStyle.NO_UNDERLINE：没有下划线
		 */
		WritableFont font = null;
		if(hasRed){
			font = new WritableFont(WritableFont.ARIAL,10,WritableFont.BOLD,false, UnderlineStyle.NO_UNDERLINE,Colour.RED);
		}else{
			font = new WritableFont(WritableFont.ARIAL,10,WritableFont.NO_BOLD,false,UnderlineStyle.NO_UNDERLINE,Colour.BLACK);
		}

		WritableCellFormat headerFormat = new WritableCellFormat();
		try {
			//添加字体设置
			headerFormat.setFont(font);
			//设置单元格背景色：表头为黄色
			//headerFormat.setBackground(Colour.YELLOW);
			//设置表头表格边框样式
			//整个表格线为粗线、黑色
			//headerFormat.setBorder(Border.ALL, BorderLineStyle.THICK, Colour.BLACK);
			//表头内容水平居中显示
			headerFormat.setAlignment(Alignment.LEFT);
		} catch (WriteException e) {
			System.out.println("表头单元格样式设置失败！");
		}
		return headerFormat;
	}

5、用户填好导出的excel后，上传文件处理方法

/**
     *@param file,request,response
     *@doc 会员导入
     **/
    @ResponseBody
    @RequestMapping(value = "importExcel", method = {RequestMethod.GET, RequestMethod.POST})
    public Result