excel =poi 测试导入 5依赖

<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.16-beta1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml</artifactId>
            <version>3.16-beta1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.commons</groupId>
            <artifactId>commons-collections4</artifactId>
            <version>4.2</version>
        </dependency>

        <dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi-ooxml-schemas</artifactId>
            <version>3.16-beta1</version>
        </dependency>
        <dependency>
            <groupId>org.apache.xmlbeans</groupId>
            <artifactId>xmlbeans</artifactId>
            <version>3.1.0</version>
        </dependency>

只适合2007以下版本：

<dependency>
            <groupId>org.apache.poi</groupId>
            <artifactId>poi</artifactId>
            <version>3.9</version>
        </dependency>

package com.king.king.admin.util;

import com.king.king.admin.model.entity.School;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Row;
import org.apache.poi.ss.usermodel.Sheet;
import org.apache.poi.ss.usermodel.Workbook;
import org.apache.poi.xssf.usermodel.XSSFWorkbook;
import org.springframework.web.multipart.MultipartFile;

import java.io.IOException;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;

/**
 * Created by Administrator on 2019/3/21.
 * 报表导入
 */
@Slf4j
public class ImportDataUtil {

    public static final String excel_new = "xlsx";//新版本
    public static final String excel_old = "xls";//旧版本

    /**
     * 执行导入
     *
     * @param file
     * @return
     */
    public List<School> importSchool(MultipartFile file) {
        List<School> tableList = new ArrayList<>();
        InputStream inputStream = null;

        Workbook workbook;
        String path = file.getOriginalFilename();
        try {
            inputStream = file.getInputStream();
            if (isPathName(path)) {
                workbook = new XSSFWorkbook(inputStream);
            } else {
                workbook = new HSSFWorkbook(inputStream);
            }

            Sheet sheet = workbook.getSheetAt(0);
            for (int i = 0; i < sheet.getLastRowNum(); i++) {
                School school = new School();
                Row row = sheet.getRow(i);
                school.setClassName(row.getCell(1).getStringCellValue());
                school.setCourseName(row.getCell(2).getStringCellValue());
                school.setClassroom(row.getCell(3).getStringCellValue());
                school.setNote(row.getCell(4).getStringCellValue());
                school.setTeacherName(row.getCell(5).getStringCellValue());
                tableList.add(school);
            }
        } catch (IOException e) {
            log.info("workbook", e);
            e.printStackTrace();
            return null;
        } finally {
            try {
                inputStream.close();
            } catch (IOException e) {
                log.info("inputStream.close()", e);
                e.printStackTrace();
                return null;
            }
        }
        return tableList;
    }


    public Boolean isPathName(String path) {
        Integer index = path.lastIndexOf(".");
        String name = path.substring(index + 1);
        if (name.equals(excel_new)) {
            return true;
        } else {
            return false;
        }
    }


}

import org.springframework.web.multipart.MultipartFile;

/**
     * 报表导入
     *
     * @return
     */
    @PostMapping("/importSchool")
    public R<Boolean> importSchoolData(@RequestParam("file") MultipartFile file) {
        if (file == null) {
            return new R<>(false);
        }
        try {
            List<School> tableList = new ImportDataUtil().importSchoolTime(file);
            System.out.println(tableList.toString());
            if (tableList.size()>0) {
                schoolService.insertBatch(tableList);
            }
        } catch (Exception e) {
            log.info("error", e);
            return new R<>(false);
        }
        return new R<>(true);
    }