EasyExcel合并单元格策略样例

运行示例

处理前：

处理后：

说明

本次使用的是一次性绝对合并策略： List<OnceAbsoluteMergeStrategy> mergeStrategyList = new ArrayList<>();

OnceAbsoluteMergeStrategy四个参数：合并开始行，合并结束行，合并开始列，合并结束列

添加策略：builder.registerWriteHandler(strategy);

代码

1、模型层

import com.alibaba.excel.annotation.ExcelProperty;
import com.alibaba.excel.annotation.write.style.ColumnWidth;
import com.alibaba.excel.annotation.write.style.ContentRowHeight;
import com.alibaba.excel.annotation.write.style.HeadRowHeight;
import lombok.Data;
import lombok.EqualsAndHashCode;
import lombok.experimental.Accessors;import java.io.Serializable;
import java.math.BigDecimal;/*** @author CC* @description 工时导出excel实体对象* @className RespManHoursVO* @date 2022/6/21 14:21*/
@Data
@EqualsAndHashCode(callSuper = false)
@Accessors(chain = true)
@ContentRowHeight(18) //内容行高
@HeadRowHeight(25) //标题行高
public class RespManHoursVO implements Serializable {@ExcelProperty(value = {"项目名称"},index = 0)@ColumnWidth(18)private String project;@ExcelProperty(value = {"姓名"},index = 1)@ColumnWidth(7)private String name;@ExcelProperty(value = {"工时占比"},index = 2)@ColumnWidth(12)private BigDecimal manHour;@ExcelProperty(value = {"所属部门"},index = 3)@ColumnWidth(19)private String dept;@ExcelProperty(value = {"是否实习"},index = 4)@ColumnWidth(12)private String isIntern;
}

2、服务层

import cn.hutool.core.date.DateTime;
import cn.hutool.core.date.DateUtil;
import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.alibaba.excel.write.merge.OnceAbsoluteMergeStrategy;
import com.baomidou.mybatisplus.core.toolkit.CollectionUtils;
import com.meb.imis.fiscal.api.IHrUserArchiveService;
import com.meb.imis.fiscal.pojo.vo.resp.RespManHoursVO;
import com.meb.imis.fiscal.service.FileExportService;
import com.meb.imis.framework.api.workteam.service.IWorkTeamService;
import lombok.SneakyThrows;
import lombok.extern.log4j.Log4j;
import org.springframework.stereotype.Service;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;
import java.net.URLEncoder;
import java.util.*;/*** @author CC* @description 文件导出服务实现类* @className FileExportServiceImpl* @date 2022/6/21 14:25*/
@Log4j
@Service
public class FileExportServiceImpl implements FileExportService {@Resourceprivate IWorkTeamService workTeamService;@Resourceprivate IHrUserArchiveService hrUserArchiveService;@Override@SneakyThrowspublic void exportWorkTime(String date, HttpServletResponse response) {// 初始化数据List<RespManHoursVO> sheet = new ArrayList<RespManHoursVO>(); // 导出列表DateTime dateTime = DateUtil.parse(date, "yyyy-MM"); // 格式化日期// 获取sheet/***    略，自行生成数据*    eg:*    RespManHoursVO raw1 = new RespManHoursVO();*   raw1.setProject("项目1");*  raw1.setName("张三");*  ...*    sheet.add(raw1);*/// 设置response参数response.setContentType("application/vnd.openxmlformats-officedocument.spreadsheetml.sheet");response.setCharacterEncoding("utf-8");String fileName = URLEncoder.encode( date.substring(0,7)+ "月数据", "UTF-8").replaceAll("\\+", "%20");response.setHeader("Content-disposition", "attachment;filename*=utf-8''" + fileName + ".xlsx");// 生成合并策略List<OnceAbsoluteMergeStrategy> mergeStrategyList = new ArrayList<>(); // 合并策略int position = 0; // 需合并列（project）下标int index = 0; // 遍历下标int curStartRowNum = 1; // 开始合并行int rowNum = 0; // 合并行数String tempProject = null; // 临时项目名boolean curMerge = false; // 当前行是否合并结束for (RespManHoursVO manHours : sheet) {if(index == 0){ // 第一次遍历tempProject = manHours.getProject();}else{if (tempProject.equals(manHours.getProject())){ // 当前项目名同上一行项目名相等rowNum++;if (index == sheet.size()-1){ // 最后一行curMerge = true;}}else{if(rowNum > 0){curMerge = true; // 开始合并}else {curStartRowNum = index+1; // 无需合并，且更新开始合并行}}tempProject = manHours.getProject(); // 更新临时项目名}// 以项目名为单位的合并单元格if (curMerge) {// OnceAbsoluteMergeStrategy参数：合并开始行，结束行，开始列，结束列
//                log.info("cc log======>合并策略坐标: "+"【"+curStartRowNum+","+(curStartRowNum + rowNum)+"】");OnceAbsoluteMergeStrategy strategyByName = new OnceAbsoluteMergeStrategy(curStartRowNum, curStartRowNum + rowNum, position, position);mergeStrategyList.add(strategyByName);curMerge = false; // 合并结束rowNum = 0 ;curStartRowNum = index+1;}index++;}// 生成excelExcelWriterSheetBuilder builder = EasyExcel.write(response.getOutputStream(), RespManHoursVO.class).sheet("sheet1");if (CollectionUtils.isNotEmpty(mergeStrategyList)) { // 添加策略for (OnceAbsoluteMergeStrategy strategy : mergeStrategyList) {builder.registerWriteHandler(strategy);}}builder.doWrite(sheet); // 写入数据生成excel}
}

3、控制层

import com.meb.imis.fiscal.service.FileExportService;
import io.swagger.annotations.ApiOperation;
import lombok.SneakyThrows;
import lombok.extern.log4j.Log4j;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;import javax.annotation.Resource;
import javax.servlet.http.HttpServletResponse;/*** @author CC* @description 导出文件* @className FileExportController* @date 2022/6/21 10:02*/
@Log4j
@RestController
@RequestMapping("export")
public class FileExportController {@Resourceprivate FileExportService fileExportService;/*** 内部结算项目管理界面导出人员工时功能* @param date* @param response*/@GetMapping("exportWorkTime")@ApiOperation("导出")@SneakyThrowspublic void exportWorkTime(@RequestParam(value = "date") String date, HttpServletResponse response){// 调用服务层生成excelfileExportService.exportWorkTime(date,response);}
}

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EasyExcel合并单元格策略样例

EasyExcel合并单元格策略样例

运行示例

说明

代码

1、模型层

2、服务层

3、控制层

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