easyPOI使用

更多的easyPOI资源的网在easypoi的官网。

1 在pom.xml中添加依赖

<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>

2 工具类

package com.hhsj.tools.excelUtils;

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 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.io.InputStream;
import java.net.URL;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;

public class ExcelUtils {
    /**
     * excel 导出
     *
     * @param list           数据
     * @param title          标题
     * @param sheetName      sheet名称
     * @param pojoClass      pojo类型
     * @param fileName       文件名称
     * @param isCreateHeader 是否创建表头
     * @param response
     */
    public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, boolean isCreateHeader, HttpServletResponse response) throws IOException {
        ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);
        exportParams.setCreateHeadRows(isCreateHeader);
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }

    /**
     * excel 导出
     *
     * @param list      数据
     * @param title     标题
     * @param sheetName sheet名称
     * @param pojoClass pojo类型
     * @param fileName  文件名称
     * @param response
     */
    public static void exportExcel(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName, HttpServletResponse response) throws IOException {
        defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName, ExcelType.XSSF));
    }

    /**
     * excel 导出
     *
     * @param list         数据
     * @param pojoClass    pojo类型
     * @param fileName     文件名称
     * @param response
     * @param exportParams 导出参数
     */
    public static void exportExcel(List<?> list, Class<?> pojoClass, String fileName, ExportParams exportParams, HttpServletResponse response) throws IOException {
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }

    /**
     * excel 导出
     *
     * @param list     数据
     * @param fileName 文件名称
     * @param response
     */
    public static void exportExcel(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {
        defaultExport(list, fileName, response);
    }

    /**
     * 默认的 excel 导出
     *
     * @param list         数据
     * @param pojoClass    pojo类型
     * @param fileName     文件名称
     * @param response
     * @param exportParams 导出参数
     */
    private static void defaultExport(List<?> list, Class<?> pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) throws IOException {
        Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
        downLoadExcel(fileName, response, workbook);
    }

    /**
     * 默认的 excel 导出
     *
     * @param list     数据
     * @param fileName 文件名称
     * @param response
     */
    private static void defaultExport(List<Map<String, Object>> list, String fileName, HttpServletResponse response) throws IOException {
        Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
        downLoadExcel(fileName, response, workbook);
    }

    /**
     * 下载
     *
     * @param fileName 文件名称
     * @param response
     * @param workbook excel数据
     */
    private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) throws IOException {
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("content-Type", "application/vnd.ms-excel");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName,"UTF-8") + "." + ExcelTypeEnum.XLSX.getValue());
            workbook.write(response.getOutputStream());
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    /**
     * excel 导入
     *
     * @param filePath   excel文件路径
     * @param titleRows  标题行
     * @param headerRows 表头行
     * @param pojoClass  pojo类型
     * @param <T>
     * @return
     */
    public static <T> List<T> importExcel(String filePath, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
        if (StringUtils.isBlank(filePath)) {
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        params.setNeedSave(true);
        params.setSaveUrl("/excel/");
        try {
            return ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
        } catch (NoSuchElementException e) {
            throw new IOException("模板不能为空");
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    /**
     * excel 导入
     *
     * @param file      excel文件
     * @param pojoClass pojo类型
     * @param <T>
     * @return
     */
    public static <T> List<T> importExcel(MultipartFile file, Class<T> pojoClass) throws IOException {
        return importExcel(file, 1, 1, pojoClass);
    }

    /**
     * excel 导入
     *
     * @param file       excel文件
     * @param titleRows  标题行
     * @param headerRows 表头行
     * @param pojoClass  pojo类型
     * @param <T>
     * @return
     */
    public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class<T> pojoClass) throws IOException {
        return importExcel(file, titleRows, headerRows, false, pojoClass);
    }

    /**
     * excel 导入
     *
     * @param file       上传的文件
     * @param titleRows  标题行
     * @param headerRows 表头行
     * @param needVerfiy 是否检验excel内容
     * @param pojoClass  pojo类型
     * @param <T>
     * @return
     */
    public static <T> List<T> importExcel(MultipartFile file, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {
        if (file == null) {
            return null;
        }
        try {
            return importExcel(file.getInputStream(), titleRows, headerRows, needVerfiy, pojoClass);
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    /**
     * excel 导入
     *
     * @param inputStream 文件输入流
     * @param titleRows   标题行
     * @param headerRows  表头行
     * @param needVerfiy  是否检验excel内容
     * @param pojoClass   pojo类型
     * @param <T>
     * @return
     */
    public static <T> List<T> importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, boolean needVerfiy, Class<T> pojoClass) throws IOException {
        if (inputStream == null) {
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        params.setSaveUrl("/excel/");
        params.setNeedSave(true);
        params.setNeedVerfiy(needVerfiy);
        try {
            return ExcelImportUtil.importExcel(inputStream, pojoClass, params);
        } catch (NoSuchElementException e) {
            throw new IOException("excel文件不能为空");
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    /**
     * Excel 类型枚举
     */
    enum ExcelTypeEnum {
        XLS("xls"), XLSX("xlsx");
        private String value;

        ExcelTypeEnum(String value) {
            this.value = value;
        }

        public String getValue() {
            return value;
        }

        public void setValue(String value) {
            this.value = value;
        }
    }
}

View Code

3 实体类

package com.hhsj.entity.salaryWorkAttendance;


import cn.afterturn.easypoi.excel.annotation.Excel;
import com.fasterxml.jackson.annotation.JsonFormat;
import io.swagger.annotations.ApiModel;
import io.swagger.annotations.ApiModelProperty;
import lombok.Data;
import lombok.EqualsAndHashCode;
import org.hibernate.annotations.GenericGenerator;
import org.springframework.data.annotation.CreatedDate;
import org.springframework.data.annotation.LastModifiedDate;
import org.springframework.data.jpa.domain.support.AuditingEntityListener;

import javax.persistence.*;
import java.util.Date;

@Data
@Entity
@EqualsAndHashCode(callSuper = false)
@Table(name = "c_work_attendance")
@EntityListeners(AuditingEntityListener.class)
@ApiModel(value = "WorkAttendance" ,description = "考勤信息表")
public class WorkAttendance {
    @Id
    @GeneratedValue(generator = "system-uuid")
    @GenericGenerator(name = "system-uuid", strategy = "uuid")
    private String id;

    private String corpId;

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    @CreatedDate
    private Date createTime;

    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    @LastModifiedDate
    private Date updateTime;

    @Excel(name = "员工姓名",orderNum = "0",width = 15)
    @ApiModelProperty(value = "员工姓名")
    private String employeeName;

    @Excel(name = "岗位",orderNum = "1",width = 15)
    @ApiModelProperty(value = "岗位")
    private String post;

    @Excel(name = "对应器械",orderNum = "2",width = 15)
    @ApiModelProperty(value = "对应器械")
    private String correspondingApparatus;

    @Excel(name = "关联项目",orderNum = "3",width = 15)
    @ApiModelProperty(value = "关联项目")
    private String relatedItems;

    @Excel(name = "装卸点选择",orderNum = "4",width = 15)
    @ApiModelProperty(value = "装卸点选择")
    private String pointChoice;

    @Excel(name = "考勤时间",orderNum = "5",format = "yyyy-MM-dd HH:mm:ss",width = 25)
    @ApiModelProperty(value = "考勤时间")
    @JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss", timezone = "GMT+8")
    private Date attendanceTime;

    @Excel(name = "考勤类型",orderNum = "7",width = 15)
    @ApiModelProperty(value = "考勤类型")
    private String attendanceType;

    @Excel(name = "位置",orderNum = "8",width = 15)
    @ApiModelProperty(value = "位置")
    private String position;

    @ApiModelProperty(value = "现场照片")
    private String img;


}

View Code

4 具体操作

package com.hhsj.service.salaryWorkAttendance.impl;

import com.hhsj.common.Result;
import com.hhsj.entity.salaryWorkAttendance.WorkAttendance;
import com.hhsj.exception.NormalException;
import com.hhsj.repository.salaryWorkAttendance.WorkAttendanceRepository;
import com.hhsj.request.salaryWorkAttendance.WorkAttendanceRequest;
import com.hhsj.service.salaryWorkAttendance.IWorkAttendanceService;
import com.hhsj.token.TokenUtils;
import com.hhsj.tools.excelUtils.ExcelUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Pageable;
import org.springframework.data.domain.Sort;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.multipart.MultipartFile;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
import java.util.Objects;

@Service
public class WorkAttendanceServiceImpl implements IWorkAttendanceService {
    @Autowired
    private WorkAttendanceRepository workAttendanceRepository;

    @Autowired
    private TokenUtils tokenUtils;



    @Override
    @Transactional(readOnly = false,rollbackFor = Exception.class)
    public Result<String> workAttendanceImport(MultipartFile file) {
        String corpId = tokenUtils.getCurrentCorpId();
        //获取上传文件的名称
        String fileName = file.getOriginalFilename();
        if (!Objects.requireNonNull(fileName).matches("^.+\\.(?i)(xls)$") && !fileName.matches("^.+\\.(?i)(xlsx)$")) {
            throw new NormalException("上传文件格式不正确");
        }
        try {
            List<WorkAttendance> attendances = ExcelUtils.importExcel(file,WorkAttendance.class);
            if (attendances != null && attendances.size() != 0){
                for (WorkAttendance attendance : attendances) {
                    attendance.setCorpId(corpId);
                    workAttendanceRepository.save(attendance);
                }
            }

        }catch (Exception e){
            throw new NormalException("上传失败");
        }
        return Result.<String>builder().success().message("上传成功").build();
    }

    @Override
    public Result<String> workAttendanceExport(HttpServletResponse response) {
        WorkAttendance workAttendance = new WorkAttendance();
        workAttendance.setAttendanceTime(new Date());
        List<WorkAttendance>  list = new ArrayList<>();
        list.add(workAttendance);
        try {
            ExcelUtils.exportExcel(list,"考勤模板","考勤模板",WorkAttendance.class,"kaoqin",response);
        } catch (IOException e) {
            throw new NormalException("模板下载失败");
        }
        return Result.<String>builder().success().message("导出成功").build();
    }
}

本文链接：https://www.cnblogs.com/cl-rr/p/10936779.html

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