EasyPOI导出报表-编程知识

报表导出是一种很常见的功能，只要是开发都会涉及到这一功能，早些年经常集成poi完成导出功能，我之前也有写过关于poi导出的文章，现如今，也有了更为方便的导出插件 — EasyPOI，废话不多说，开始撸代码

第一步：pom.xml添加EasyPOI依赖

 <!-- easypoi相关--><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-base</artifactId><version>4.2.0</version></dependency><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-annotation</artifactId><version>4.2.0</version></dependency><dependency><groupId>cn.afterturn</groupId><artifactId>easypoi-web</artifactId><version>4.2.0</version></dependency>

第二步：编写easypoi导出工具类

package com.example.work.util;import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import org.apache.poi.ss.usermodel.*;import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.net.URLEncoder;
import java.util.List;/*** @Description: 导入导出工具类* @Author: lyz* @CreateTime: 2023-12-28*/
public class EasyPoiUtils {/*** @Description:  excel-常规导出* @param[1] list 数据列表* @param[2] title 报表标题* @param[3] sheetName excel工作表名* @param[4] pojoClass 导出实体类* @param[5] fileName 导出excel文件名称* @param[6] response**/public static void export(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,HttpServletResponse response)throws IOException {ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);//把数据添加到excel表格中Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);//设置单元格格式setBorder(workbook);//下载excel文件downLoadExcel(workbook,fileName, response);}/*** 给指定行指定列设置边框* @param[1] workbook 工作簿对象*/private static void setBorder(Workbook workbook) {Sheet sheet = workbook.getSheetAt(0);// 表格列数int physicalNumberOfCells = workbook.getSheetAt(0).getRow(0).getPhysicalNumberOfCells();//表格列数int lastRowNum = workbook.getSheetAt(0).getLastRowNum();for (int i = 0; i <= lastRowNum; i++) {for (int j = 0; j < physicalNumberOfCells; j++) {CellStyle cellStyle = workbook.createCellStyle();cellStyle.setAlignment(HorizontalAlignment.CENTER);//水平对齐居中cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);//垂直对齐在单元格的高度上居中cellStyle.setBorderBottom(BorderStyle.THIN);cellStyle.setBorderLeft(BorderStyle.THIN);cellStyle.setBorderRight(BorderStyle.THIN);cellStyle.setBorderTop(BorderStyle.THIN);if (i == 0) {// 设置背景颜色cellStyle.setFillForegroundColor(IndexedColors.YELLOW1.getIndex());// 设置填充样式cellStyle.setFillPattern(FillPatternType.SOLID_FOREGROUND);//设置字体样式Font font = workbook.createFont();font.setBold(true);cellStyle.setFont(font);}Row row = sheet.getRow(i);Cell cell = row.getCell(j);cell.setCellStyle(cellStyle);}}}/*** excel下载* @param[1] workbook 工作簿对象* @param[2] fileName 下载时的文件名称* @param[3] response*/private static void downLoadExcel(Workbook workbook, String fileName, HttpServletResponse response)throws IOException {try {response.setCharacterEncoding("UTF-8");response.setHeader("content-Type", "application/vnd.ms-excel");response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName + ".xlsx","UTF-8"));workbook.write(response.getOutputStream());} catch (Exception e) {throw new IOException(e.getMessage());}}}

第三步：编写导出方法（只粘贴主要部分代码）

实体类

package com.example.work.entity;import java.math.BigDecimal;
import java.util.Date;import cn.afterturn.easypoi.excel.annotation.Excel;
import com.fasterxml.jackson.annotation.JsonFormat;
import lombok.Data;
import org.springframework.format.annotation.DateTimeFormat;@Data
public class Employee {/*** id*/private Integer id;/*** 姓名*/@Excel(name = "姓名")private String name;/*** 性别 1-男；2-女*/@Excel(name = "性别",replace = {"男_1", "女_2"})private Byte sex;/*** 出生地*/@Excel(name = "出生地")private String address;/*** 出生年月*/@Excel(name = "出生年月",exportFormat = "yyyy-MM-dd",width = 15)@DateTimeFormat(pattern = "yyyy-MM-dd")@JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")private Date birthDay;/*** 联系电话*/@Excel(name = "联系电话",width = 15)private String phone;/*** 工资*/@Excel(name = "工资(单位:元)",width = 15)private BigDecimal salary;
}

controller层

package com.example.work.controller;import com.baomidou.mybatisplus.extension.api.R;
import com.example.work.service.EmployeeService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;import javax.servlet.http.HttpServletResponse;/*** @Description: TODO* @Author: lyz* @CreateTime: 2024-01-10*/
@RestController
@RequestMapping("/employee")
public class EmployeeController {@AutowiredEmployeeService employeeService;@GetMapping("/export")public void export(HttpServletResponse response){employeeService.export(response);}
}

业务层

package com.example.work.service.impl;import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.example.work.dao.EmployeeMapper;
import com.example.work.entity.Employee;
import com.example.work.service.EmployeeService;
import com.example.work.util.EasyPoiUtils;
import org.springframework.stereotype.Service;import javax.servlet.http.HttpServletResponse;
import java.util.List;/*** @Description: TODO* @Author: lyz* @CreateTime: 2024-01-10*/
@Service
public class EmployeeServiceImpl extends ServiceImpl<EmployeeMapper, Employee> implements EmployeeService {@Overridepublic void export(HttpServletResponse response) {try {List<Employee> list = this.list();String fileName = "员工工资报表";EasyPoiUtils.export(list,null,fileName,Employee.class,fileName,response);}catch (Exception e){throw new RuntimeException("导出失败");}}
}