springboot+easypoi 导入数据

首先添加依赖

       
        
            org.springframework.boot
            spring-boot-starter-web
        

        
        
            org.projectlombok
            lombok
            true
        

        
        
            commons-io
            commons-io
            2.6
        

        
        
            commons-fileupload
            commons-fileupload
            1.4
        

        
        
            cn.afterturn
            easypoi-base
            3.2.0
        
        
            cn.afterturn
            easypoi-web
            3.2.0
        
        
            cn.afterturn
            easypoi-annotation
            3.2.0
        

 

新建 EasyPoiUtils 工具类

import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import com.pigs.springbooteasypoipigs.entity.UserEntity;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;

/**
 * @author PIGS
 * @version 1.0
 * @date 2020/4/25 14:16
 * @effect :
 * 表格数据工具类
 */
public final class EasyPoiUtils {

    private EasyPoiUtils() {
    }

    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 RuntimeException(e);
        }
    }

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

    public static  void exportExcel(List dataList, String title, String sheetName, Class clz, String fileName, boolean isCreateHeader, HttpServletResponse response) {
        ExportParams exportParams = new ExportParams(title, sheetName);
        exportParams.setCreateHeadRows(isCreateHeader);
        defaultExport(dataList, clz, fileName, response, exportParams);
    }

    public static  void exportExcel(List dataList, String title, String sheetName, Class clz, String fileName, HttpServletResponse response) {
        defaultExport(dataList, clz, fileName, response, new ExportParams(title, sheetName));
    }

    private static void defaultExport(List> dataList, String fileName, HttpServletResponse response) {
        Workbook workbook = ExcelExportUtil.exportExcel(dataList, ExcelType.HSSF);
        if (workbook != null) {
            downLoadExcel(fileName, response, workbook);
        }
    }

    public static void exportExcel(List> dataList, String fileName, HttpServletResponse response) {
        defaultExport(dataList, fileName, response);
    }

    public static  List importExcel(String filePath, Integer titleRows, Integer headerRows, Class clz) {
        if (StringUtils.isBlank(filePath)) {
            return null;
        }

        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);

        try {
            return ExcelImportUtil.importExcel(new File(filePath), clz, params);
        } catch (Exception e) {
            throw new RuntimeException(e.getMessage());
        }
    }

    public static  List importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class clz) {
        if (file == null) {
            return null;
        }

        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);

        try {
            return ExcelImportUtil.importExcel(file.getInputStream(), clz, params);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    /**
     * 导入数据
     * userEnity 你自己新建的实体类 实体类代码在下面
     * @param file
     * @param clz
     * @return
     */
    public static List importExcel(MultipartFile file, Class clz) {
        if (file == null) {
            return null;
        }

        ImportParams params = new ImportParams();
        params.setTitleRows(0);
        params.setHeadRows(1);
        try {
            return ExcelImportUtil.importExcel(file.getInputStream(), clz, params);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}

新建一个实体类接收参数

import cn.afterturn.easypoi.excel.annotation.Excel;
import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;

/**
 * @author PIGS
 * @version 1.0
 * @date 2020/4/25 14:16
 * @effect :
 * 用户实体类
 */
@Data
@AllArgsConstructor
@NoArgsConstructor
public class UserEntity {

    @Excel(name = "用户ID", width = 15)
    private Integer userId;

    @Excel(name = "用户名", width = 15)
    private String userName;

    @Excel(name = "用户性别", width = 15)
    private String userSex;

    @Excel(name = "用户年龄", width = 15)
    private Integer userAge;
}

 

新建一个前端控制器

 

import com.pigs.springbooteasypoipigs.entity.UserEntity;
import com.pigs.springbooteasypoipigs.utils.EasyPoiUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

/**
 * @author PIGS
 * @version 1.0
 * @date 2020/4/25 14:22
 * @effect :
 * Excel 前端控制器
 */
@RestController
public class ExcelController {

    /**
     * 从表格插入数据
     * 接收并返回前台
     *
     * @param file
     * @return
     * @throws IOException
     */
    @RequestMapping("/uploadExcel")
    public Map uploadExcel(@RequestParam("file") MultipartFile file) throws IOException {
        List checkingIns = EasyPoiUtils.importExcel(file, UserEntity.class);
        Map map = new HashMap<>();
        map.put("code",200);
        map.put("msg","ok");
        map.put("data",checkingIns);
        return map;
    }
}

 

新建一个html页面

DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>上传exceltitle>
head>
<body>
<h1>上传excel文件h1>
<form action="/uploadExcel" method="post" enctype="multipart/form-data">
    <p>文件上传p>
    <input type="file" name="file">
    <p><input type="submit" value="提交">p>
form>
body>
html>

 

自制几条数据

这个字段名跟实体类  @Excel(name = "用户ID", width = 15) 需要一致不然会接收不到参数的

 

 

 

最后提交就完事了

 

 

demo 已经上传了 gitee了需要就去看吧

https://gitee.com/pig_farmer_x/springboot-easypoi-pigs