easyExcel使用模版填充excel,合并单元格

一、最终效果

二、制作模版

1、制作填充模版

模版在代码中保存的位置

2、Controller

bash 复制代码
/**
 * 下载模板
 */
@RequestMapping(value = "exportData")
public void exportData(KqKqb kqKqb,HttpServletResponse response, HttpServletRequest request) throws IOException {
	kqKqbService.exportData(kqKqb,response,request);
}

3、Service(获取数据的逻辑不重要,重点单元格合并)

bash 复制代码
public void exportData(KqKqb kqKqb,HttpServletResponse response, HttpServletRequest request) throws IOException {
        //获取填充数据
        KqKqb entity = dao.get(kqKqb);
        Integer ycqts = entity.getYcqts();//本月应出勤天数
        String officeName = entity.getOfficeName();//单位名称
        List<Map<String, Object>> mapLit = ListUtils.newArrayList();
        KqKqbZb zbSql = new KqKqbZb();
        zbSql.setMonth(entity.getMonth());
        zbSql.setOfficeCode(entity.getOfficeCode());
        List<KqKqbZb> zbList = zbDao.findList(zbSql);
        String year =  kqKqb.getMonth().split("-")[0];
        String month =  kqKqb.getMonth().split("-")[1];

        //list填充数据封装
        String empCode = "";
        Integer xh = 0;
        for (KqKqbZb kqKqbZb : zbList) {
            //工号不重复序列加号加自增1
            if(!empCode.equals(kqKqbZb.getEmpCode())){
                empCode = kqKqbZb.getEmpCode();
                xh++;
            }
            kqKqbZb.setXh(xh);
            mapLit.add(JSON.parseObject(JSON.toJSONString(kqKqbZb), Map.class));
        }

        //模版所在位置
        String templateName = "员工考勤表上传模板1.xlsx";
        String serverPath = request.getSession().getServletContext().getRealPath("/");
        String ftlPath = serverPath + "ftl\\kh\\";
        String templateFileName = ftlPath + templateName;

        //文件名封装
        String fileName = month + "月-" + officeName + "-员工考勤表";
        response.setHeader("Content-disposition", "attachment;filename=" + String.valueOf(URLEncoder.encode(fileName, "UTF-8")) + ".xlsx");// 设置文件头编码格式
        response.setContentType("APPLICATION/OCTET-STREAM;charset=UTF-8");// 设置类型

        //定义合并规则
        List<Integer> mergeColumnIndex = ListUtils.newArrayList(0, 1, 2,35,36,37,38,39,40);//第几列所在行开始合并
        ExcelMergeStrategy loopMergeStrategy = new ExcelMergeStrategy(4, 2, mergeColumnIndex); // 从第4行开始,每隔2行合并,mergeColumnIndex需要合并行所在的列

        //开始填充
        ExcelWriterBuilder excelWriterBuilder = EasyExcel.write(response.getOutputStream());
        excelWriterBuilder.registerWriteHandler(loopMergeStrategy);
        excelWriterBuilder.autoCloseStream(true);
        ExcelWriter excelWriter = excelWriterBuilder.withTemplate(templateFileName).build();
        WriteSheet writeSheet = EasyExcel.writerSheet().build();
        FillConfig fillConfig = FillConfig.builder().forceNewRow(Boolean.TRUE).build();
        excelWriter.fill(mapLit, fillConfig, writeSheet);
        Map<String, Object> map = MapUtils.newHashMap();
        map.put("officeName", officeName);
        map.put("year", year);
        map.put("month", month);
        map.put("ycqts", ycqts);
        excelWriter.fill(map, writeSheet);
        excelWriter.finish();
}

核心:从第0、1、2等列和第4行开始,每两行合并单元格

bash 复制代码
//定义合并规则
List<Integer> mergeColumnIndex = ListUtils.newArrayList(0, 1, 2,35,36,37,38,39,40);//第几列所在行开始合并
ExcelMergeStrategy loopMergeStrategy = new ExcelMergeStrategy(4, 2, mergeColumnIndex); // 从第4行开始,每隔2行合并,mergeColumnIndex需要合并行所在的列

4、新建合并策略类

bash 复制代码
package com.jeesite.modules.util;

import com.alibaba.excel.write.handler.RowWriteHandler;
import com.alibaba.excel.write.handler.context.RowWriteHandlerContext;
import lombok.Data;
import lombok.extern.slf4j.Slf4j;
import org.apache.poi.ss.util.CellRangeAddress;

import java.util.List;

/**
 * @Description EasyExcel 导出合并单元格
 */
@Slf4j
@Data
public class ExcelMergeStrategy implements RowWriteHandler {
    /*
     * 要合并的列 (下表也是从0开始)
     */
    private List<Integer> mergeColumnIndex;


    /*
     * 用第几行开始合并 ,默认为1,因为第0行是标题,EasyExcel 的默认也是
     */
    private int mergeBeginRowIndex = 1;

    /**
     * Each row
     */
    private int eachRow;

    private int columnExtend = 1;

    public ExcelMergeStrategy(int mergeBeginRowIndex, int eachRow, List<Integer> mergeColumnIndex) {
        this.mergeBeginRowIndex = mergeBeginRowIndex;
        this.eachRow = eachRow;
        this.mergeColumnIndex = mergeColumnIndex;
    }

    @Override
    public void afterRowDispose(RowWriteHandlerContext context) {
        if (context.getHead() || context.getRelativeRowIndex() == null) {
            return;
        }
        //当前行
        int curRowIndex = context.getRowIndex();
        //当前列
        if (curRowIndex > mergeBeginRowIndex) {
            if (context.getRelativeRowIndex() % eachRow == 0) {
                for (Integer columnIndex : mergeColumnIndex) {
                    CellRangeAddress cellRangeAddress = new CellRangeAddress(context.getRowIndex(),
                            context.getRowIndex() + eachRow - 1,
                            columnIndex, columnIndex + columnExtend - 1);
                    context.getWriteSheetHolder().getSheet().addMergedRegionUnsafe(cellRangeAddress);
                }
            }
        }
    }
}
相关推荐
缺点内向5 小时前
Java:创建、读取或更新 Excel 文档
java·excel
带刺的坐椅6 小时前
Solon v3.4.7, v3.5.6, v3.6.1 发布(国产优秀应用开发框架)
java·spring·solon
四谎真好看7 小时前
Java 黑马程序员学习笔记(进阶篇18)
java·笔记·学习·学习笔记
桦说编程7 小时前
深入解析CompletableFuture源码实现(2)———双源输入
java·后端·源码
java_t_t7 小时前
ZIP工具类
java·zip
lang201509288 小时前
Spring Boot优雅关闭全解析
java·spring boot·后端
pengzhuofan9 小时前
第10章 Maven
java·maven
百锦再9 小时前
Vue Scoped样式混淆问题详解与解决方案
java·前端·javascript·数据库·vue.js·学习·.net
刘一说9 小时前
Spring Boot 启动慢?启动过程深度解析与优化策略
java·spring boot·后端
壹佰大多9 小时前
【spring如何扫描一个路径下被注解修饰的类】
java·后端·spring