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【springboot+easypoi】一行代码搞定excel导

2017-12-26  本文已影响12456人  小尘哥

我们不造轮子,只是轮子的搬运工。(其实最好是造轮子,造比别人好的轮子)

pom引入

       <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-base</artifactId>
            <version>3.0.3</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-web</artifactId>
            <version>3.0.3</version>
        </dependency>
        <dependency>
            <groupId>cn.afterturn</groupId>
            <artifactId>easypoi-annotation</artifactId>
            <version>3.0.3</version>
        </dependency>

编写实体类

属性 类型 类型 说明
name String null 列名
needMerge boolean fasle 纵向合并单元格
orderNum String "0" 列的排序,支持name_id
replace String[] {} 值得替换 导出是{a_id,b_id} 导入反过来
savePath String "upload" 导入文件保存路径
type int 1 导出类型 1 是文本 2 是图片,3 是函数,10 是数字 默认是文本
width double 10 列宽
height double 10 列高,后期打算统一使用@ExcelTarget的height,这个会被废弃,注意
isStatistics boolean fasle 自动统计数据,在追加一行统计,把所有数据都和输出这个处理会吞没异常,请注意这一点
isHyperlink boolean false 超链接,如果是需要实现接口返回对象
isImportField boolean true 校验字段,看看这个字段是不是导入的Excel中有,如果没有说明是错误的Excel,读取失败,支持name_id
exportFormat String "" 导出的时间格式,以这个是否为空来判断是否需要格式化日期
importFormat String "" 导入的时间格式,以这个是否为空来判断是否需要格式化日期
format String "" 时间格式,相当于同时设置了exportFormat 和 importFormat
databaseFormat String "yyyyMMddHHmmss" 导出时间设置,如果字段是Date类型则不需要设置 数据库如果是string 类型,这个需要设置这个数据库格式,用以转换时间格式输出
numFormat String "" 数字格式化,参数是Pattern,使用的对象是DecimalFormat
imageType int 1 导出类型 1 从file读取 2 是从数据库中读取 默认是文件 同样导入也是一样的
suffix String "" 文字后缀,如% 90 变成90%
isWrap boolean true 是否换行 即支持\n
mergeRely int[] {} 合并单元格依赖关系,比如第二列合并是基于第一列 则{1}就可以了
mergeVertical boolean fasle 纵向合并内容相同的单元格
import cn.afterturn.easypoi.excel.annotation.Excel;

import java.util.Date;

public class Person {

    @Excel(name = "姓名", orderNum = "0")
    private String name;

    @Excel(name = "性别", replace = {"男_1", "女_2"}, orderNum = "1")
    private String sex;

    @Excel(name = "生日", exportFormat = "yyyy-MM-dd", orderNum = "2")
    private Date birthday;

    public Person(String name, String sex, Date birthday) {
        this.name = name;
        this.sex = sex;
        this.birthday = birthday;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public Date getBirthday() {
        return birthday;
    }

    public void setBirthday(Date birthday) {
        this.birthday = birthday;
    }
}

导入导出公用方法

public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass,String fileName,boolean isCreateHeader, HttpServletResponse response){
        ExportParams exportParams = new ExportParams(title, sheetName);
        exportParams.setCreateHeadRows(isCreateHeader);
        defaultExport(list, pojoClass, fileName, response, exportParams);

    }
    public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass,String fileName, HttpServletResponse response){
        defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName));
    }
public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response){
        defaultExport(list, fileName, response);
    }

    private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) {
        Workbook workbook = ExcelExportUtil.exportExcel(exportParams,pojoClass,list);
        if (workbook != null);
        downLoadExcel(fileName, response, workbook);
    }

    private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) {
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("content-Type", "application/vnd.ms-excel");
            response.setHeader("Content-Disposition",
                    "attachment;filename=" + URLEncoder.encode(fileName, "UTF-8"));
            workbook.write(response.getOutputStream());
        } catch (IOException e) {
            throw new NormalException(e.getMessage());
        }
    }
private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) {
        Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
        if (workbook != null);
        downLoadExcel(fileName, response, workbook);
    }

    public static <T> List<T> importExcel(String filePath,Integer titleRows,Integer headerRows, Class<T> pojoClass){
        if (StringUtils.isBlank(filePath)){
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List<T> list = null;
        try {
            list = ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
        }catch (NoSuchElementException e){
            throw new NormalException("模板不能为空");
        } catch (Exception e) {
            e.printStackTrace();
            throw new NormalException(e.getMessage());
        }
        return list;
    }
    public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass){
        if (file == null){
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        List<T> list = null;
        try {
            list = ExcelImportUtil.importExcel(file.getInputStream(), pojoClass, params);
        }catch (NoSuchElementException e){
            throw new NormalException("excel文件不能为空");
        } catch (Exception e) {
            throw new NormalException(e.getMessage());
        }
        return list;
    }

对的,没看错,这就可以导出导入了,看起来代码挺多,其实是提供了多个导入导出方法而已

测试

  @RequestMapping("export")
    public void export(HttpServletResponse response){

        //模拟从数据库获取需要导出的数据
        List<Person> personList = new ArrayList<>();
        Person person1 = new Person("路飞","1",new Date());
        Person person2 = new Person("娜美","2", DateUtils.addDate(new Date(),3));
        Person person3 = new Person("索隆","1", DateUtils.addDate(new Date(),10));
        Person person4 = new Person("小狸猫","1", DateUtils.addDate(new Date(),-10));
        personList.add(person1);
        personList.add(person2);
        personList.add(person3);
        personList.add(person4);

        //导出操作
        FileUtil.exportExcel(personList,"花名册","草帽一伙",Person.class,"海贼王.xls",response);
    }

    @RequestMapping("importExcel")
    public void importExcel(){
        String filePath = "F:\\海贼王.xls";
        //解析excel,
        List<Person> personList = FileUtil.importExcel(filePath,1,1,Person.class);
        //也可以使用MultipartFile,使用 FileUtil.importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass)导入
        System.out.println("导入数据一共【"+personList.size()+"】行");

        //TODO 保存数据库
    }

导出结果

导出结果

测试导入

导出结果再添加一行,执行,输出导入数据行数


导入结果
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