EasyPOI导出报表(二)-合并单元格-编程知识

EasyPOI导出报表(二)-合并单元格

上篇讲到EasyPOI导出常规报表，本篇是在此基础上再增加新的东西-合并单元格，这个功能在需求中也很常见。

这里我直接贴逻辑代码：
EasyPOI工具类加上如下方法

   /*** @Description:  excel导出-合并单元格* @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* @param[7] columns 需要进行合并的列**/public static void exportMerge(List<?> list, String title, String sheetName, Class<?> pojoClass, String fileName,HttpServletResponse response, Integer[] columns)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);//对单元格进行合并--对第一张工作表第2行第columns列开始合并PoiMergeCellUtil.mergeCells(workbook.getSheetAt(0),1,columns);//下载excel文件downLoadExcel(workbook,fileName, response);}

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;/*** 所在部门*/@Excel(name = "所在部门")private String dept;/*** 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

    @GetMapping("/exportMerge")public void exportMerge(HttpServletResponse response){employeeService.exportMerge(response);}

业务层

   @Overridepublic void exportMerge(HttpServletResponse response) {try {//针对要合并的列所对应的字段进行排序List<Employee> list = this.list(new LambdaQueryWrapper<Employee>().orderByDesc(Employee::getDept).orderByDesc(Employee::getAddress));String fileName = "员工工资报表";//需要合并的列Integer []columns ={2,3};EasyPoiUtils.exportMerge(list,null,fileName,Employee.class,fileName,response,columns);}catch (Exception e){throw new RuntimeException("导出失败");}}