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easyexcel复杂表头及标题的导出功能(自定义样式及多sheet导出)

注意表格行高列宽统一设置是在实体类的类名注解上,如果需要对表格进行精细的宽高设置需要删除掉这两个注解,可以在拦截器使用row的方法进行设置

1、引入依赖

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>easyexcel</artifactId>
     <version>2.1.4</version>
</dependency>

2、实体类(注解法)示例

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@Data
@AllArgsConstructor
@NoArgsConstructor
@HeadRowHeight(20)
@ColumnWidth(25)
@HeadStyle(fillPatternType = FillPatternType.SOLID_FOREGROUND, fillForegroundColor = 22,horizontalAlignment = HorizontalAlignment.CENTER)
@ContentStyle(wrapped = true,verticalAlignment = VerticalAlignment.TOP)
@Builder
public class UserEntity implements Serializable {
    private static final long serialVersionUID = 1L;
    
    @ExcelProperty(value = "ID", order = 1)
    private Long id;
    
    @ExcelProperty(value = "姓名", order = 2)
    private String userName;
   
    @ExcelProperty(value = "年龄", order = 3)
    @ColumnWidth(15)
    private Integer age;
   
    @ExcelProperty(value = "邮箱", order = 4)
    private String email;
   
    @ExcelProperty(value = "出生日期", order = 5,converter = LocalDateConverter.class)
    private Date birth;
    
    @ExcelIgnore
    private String remark;
}
View Code
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复制代码
package com.jpxx.admin.pilebody.service.api.dto;
 
import com.alibaba.excel.annotation.ExcelIgnore;
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 com.alibaba.excel.util.StringUtils;
import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.experimental.Accessors;
 
 
@Data
@NoArgsConstructor
@Accessors(chain = true)
@ContentRowHeight(45)
@HeadRowHeight(50)
public class PilebodycheckMonthDto {
 
    @ExcelIgnore
    private String id;
 
    @ExcelIgnore
    private String cityid;
 
    @ExcelIgnore
    private String districtid;
 
    @ExcelProperty(value = {"序号","序号"},index = 0)
    @ColumnWidth(10)
    private String orderNum;
 
    @ExcelProperty(value = {"堆体名称","堆体名称"},index = 1)
    @ColumnWidth(15)
    private String name;
 
    @ExcelProperty(value = {"具体位置","具体位置"},index = 3)
    @ColumnWidth(30)
    private String address;
 
    @ExcelProperty(value = {"占地面积（平方）","占地面积（平方）"},index = 4)
    @ColumnWidth(15)
    private String areastr;
 
    @ExcelProperty(value = {"堆体高度（米）","堆体高度（米）"},index = 5)
    @ColumnWidth(10)
    private String heightstr;
 
    @ExcelProperty(value = {"建筑垃圾堆存量（万方）","建筑垃圾堆存量（万方）"},index = 6)
    @ColumnWidth(15)
    private String stocknum;
 
    @ExcelIgnore
    @Dict(dicCode = "governway")
    private String governway;
 
    @ExcelProperty(value = {"治理方式","治理方式"},index = 7)
    @ColumnWidth(20)
    private String governwayname;
 
    @ExcelProperty(value = {"如需外运，计划外运时间","如需外运，计划外运时间"},index = 8)
    @ColumnWidth(15)
    private String outwardtransporttime;
 
    @ExcelProperty(value = {"截止目前累计治理量（万方）","截止目前累计治理量（万方）"},index = 13)
    @ColumnWidth(15)
    private String governnum;
 
    @ExcelProperty(value = {"治理主体","治理主体"},index = 14)
    @ColumnWidth(15)
    private String governbody;
 
    @ExcelIgnore
    @Dict(dicCode = "typestr")
    private String typestr;
 
    @ExcelProperty(value = {"堆体类型","堆体类型"},index = 2)
    @ColumnWidth(15)
    private String typestrname;
 
    @ExcelIgnore
    @Dict(dicCode = "statestr")
    private String statestr;
 
    @ExcelIgnore
    private String districtname;
 
    @ExcelProperty(value = {"监管单位","监管单位"},index = 15)
    @ColumnWidth(15)
    private String supervisedepartname;
 
    @ExcelProperty(value = {"监管责任人","监管责任人"},index = 16)
    @ColumnWidth(10)
    private String supervisepeoname;
 
    @ExcelProperty(value = {"职务","职务"},index = 17)
    @ColumnWidth(10)
    private String supervisepeoposition;
 
    @ExcelProperty(value = {"联系方式","联系方式"},index = 18)
    @ColumnWidth(20)
    private String supervisepeophone;
 
    @ExcelIgnore
    private String residuenum;
 
    @ExcelIgnore
    private String governendtime;
 
    @ExcelIgnore
    private String governendyearmonth;
 
    @ExcelProperty(value = {"本月治理量（万方）","外运量"},index = 9)
    @ColumnWidth(15)
    private String outwardtransportnum;
 
    @ExcelProperty(value = {"本月治理量（万方）","整理地形绿化量"},index = 10)
    @ColumnWidth(15)
    private String afforestnum;
 
    @ExcelProperty(value = {"本月治理量（万方）","临时覆盖或绿化量"},index = 11)
    @ColumnWidth(15)
    private String temporarilynum ;
 
    @ExcelProperty(value = {"本月治理量（万方）","合计"},index = 12)
    private String goverytotal;
 
    @ExcelIgnore
    private String qynum;
 
    @ExcelIgnore
    @Dict(dicCode = "sourcestr")
    private String sourcestr;
 
    @ExcelIgnore
    private String createbyname;
 
}
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3、controller

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    @postMapping("pilebodystatisticsmonthexport")
    public WebApiResponse<List<PilebodycheckMonthDto>> pilebodystatisticsmonthexport (HttpServletResponse response,String month) throws IOException { 
        List<PilebodycheckMonthDto> pilebodysList = pilebodycheckService.pilebodystatisticsmonth(sysDepartDto, month);
       //设置序号
        for (int i = 1;i <= pilebodysList.size();i++){
            pilebodysList.get(i-1).setOrderNum(i+"");
        }
        response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        // 这里URLEncoder.encode可以防止中文乱码 当然和easyexcel没有关系
        String fileName = URLEncoder.encode("存量建筑垃圾堆体治理进度月报表", "UTF-8");
        response.setHeader("Content-disposition",  "attachment;filename=" + fileName + ".xls");
        //内容样式策略
        WriteCellStyle contentWriteCellStyle = new WriteCellStyle();
        //垂直居中,水平居中
        contentWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
        contentWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);
        contentWriteCellStyle.setBorderLeft(BorderStyle.THIN);
        contentWriteCellStyle.setBorderTop(BorderStyle.THIN);
        contentWriteCellStyle.setBorderRight(BorderStyle.THIN);
        contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);
        //设置 自动换行
        contentWriteCellStyle.setWrapped(true);
        // 字体策略
        WriteFont contentWriteFont = new WriteFont();
        // 字体大小
        contentWriteFont.setFontHeightInPoints((short) 12);
        contentWriteCellStyle.setWriteFont(contentWriteFont);
        //头策略使用默认
        WriteCellStyle headWriteCellStyle = new WriteCellStyle();
 
        //excel如需下载到本地,只需要将response.getOutputStream()换成File即可(注释掉以上response代码)
        EasyExcel.write(response.getOutputStream(), PilebodycheckMonthDto.class)
                //设置输出excel版本,不设置默认为xlsx
                .excelType(ExcelTypeEnum.XLS).head(PilebodycheckMonthDto.class)
                //设置拦截器或自定义样式
                .registerWriteHandler(new MonthSheetWriteHandler())
                .registerWriteHandler(new HorizontalCellStyleStrategy(headWriteCellStyle,contentWriteCellStyle))
                .sheet("存量建筑垃圾堆体治理进度月报表")
                //设置默认样式及写入头信息开始的行数
                .useDefaultStyle(true).relativeHeadRowIndex(3)
                //这里的addsumColomn方法是个添加合计的方法,可删除
                .doWrite(pilebodycheckService.addSumColomn(pilebodysList));
        return new WebApiResponse(200, "生成excel文件成功", null);
 
    }
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4、拦截器

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package com.jpxx.admin.pilebody.web.api;
 
import com.alibaba.excel.write.handler.SheetWriteHandler;
import com.alibaba.excel.write.metadata.holder.WriteSheetHolder;
import com.alibaba.excel.write.metadata.holder.WriteWorkbookHolder;
import org.apache.poi.ss.usermodel.*;
import org.apache.poi.ss.util.CellRangeAddress;
 
public class MonthSheetWriteHandler implements SheetWriteHandler {
    @Override
    public void beforeSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {
 
    }
 
    @Override
    public void afterSheetCreate(WriteWorkbookHolder writeWorkbookHolder, WriteSheetHolder writeSheetHolder) {
        Workbook workbook = writeWorkbookHolder.getWorkbook();
        Sheet sheet = workbook.getSheetAt(0);
        Row row1 = sheet.createRow(0);
        row1.setHeight((short) 500);
        Cell cell = row1.createCell(0);
        //设置单元格内容
        cell.setCellValue("附件2");
        //设置标题
        Row row2 = sheet.createRow(1);
        row2.setHeight((short) 800);
        Cell cell1 = row2.createCell(0);
        cell1.setCellValue("存量建筑垃圾堆体治理进度月报表");
        CellStyle cellStyle = workbook.createCellStyle();
        cellStyle.setVerticalAlignment(VerticalAlignment.CENTER);
        cellStyle.setAlignment(HorizontalAlignment.CENTER);
        Font font = workbook.createFont();
        font.setBold(true);
        font.setFontHeight((short) 400);
        cellStyle.setFont(font);
        cell1.setCellStyle(cellStyle);
        sheet.addMergedRegionUnsafe(new CellRangeAddress(1, 1, 0, 17));
        //设置填表日期,填报人,联系方式
        Row row3 = sheet.createRow(2);
        row3.setHeight((short) 500);
        row3.createCell(1).setCellValue("填表日期");
        row3.createCell(11).setCellValue("填表人");
        row3.createCell(15).setCellValue("联系方式");
 
    }
}
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生成表格如下:

 

倘若要进行多sheet导出,可参考以下导出方式(仅为示例,使用时按现实要求修改参数即可) 

复制代码
response.setContentType("application/vnd.ms-excel");
        response.setCharacterEncoding("utf-8");
        String fileName = URLEncoder.encode("测试输出", "UTF-8");
        response.setHeader("Content-disposition", "attachment;filename=" + fileName + ".xls");
        //内容样式策略
        WriteCellStyle contentWriteCellStyle = ExcelContentStyle.getWriteCellStyle();
        //头策略使用默认
        WriteCellStyle headWriteCellStyle = new WriteCellStyle();
        try {
            ExcelWriter build = EasyExcel.write(response.getOutputStream()).build();
            WriteSheet sheet0 = EasyExcel.writerSheet(0, "一类")
                    .head(LivelihoodStatisticsYiDto.class)
                    .registerWriteHandler(new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle))
                    .useDefaultStyle(true)
                    .registerWriteHandler(new LiveSheetWriteHandler())
                    .relativeHeadRowIndex(1)
                    .build();
            build.write(lxones, sheet0);
 
 
            WriteSheet sheet1 = EasyExcel.writerSheet(1, "二类")
                    .registerWriteHandler(new HorizontalCellStyleStrategy(headWriteCellStyle, contentWriteCellStyle))
                    .head(LivelihoodStatisticsDto.class)
                    .useDefaultStyle(true)
                    .registerWriteHandler(new LiveTowSheetWriteHandler())
                    .relativeHeadRowIndex(1).build();
            build.write(lxtwo, sheet1);
 
            build.finish();
 
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
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结果图：

 最后附上一个easyexcel工具类

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import com.alibaba.excel.EasyExcel;
import com.alibaba.excel.ExcelWriter;
import com.alibaba.excel.write.builder.ExcelWriterBuilder;
import com.alibaba.excel.write.builder.ExcelWriterSheetBuilder;
import com.example.code.bot_monomer.config.common.LocalDateTimeConverter;

import org.apache.commons.lang3.StringUtils;

import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.lang.reflect.Field;
import java.net.URLEncoder;
import java.nio.charset.StandardCharsets;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import io.swagger.annotations.ApiModel;

/**
 * Excel
 * @author shf
 * @date 2021-1-9 17:15:23
 */
public class EasyExcelUtil {
    /**
     * 导出
     * @param res {@link HttpServletResponse}
     * @param data {@link List}<{@link T}>：为空时，无法获取表头；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-1-9 17:18:02
     */
    @SuppressWarnings("unchecked")
    public static <T> WriterSheetBuilder write(HttpServletResponse res, List<T> data) throws IOException {
        Class<T> c = null;
        if (data != null && !data.isEmpty()) {
            T t = data.get(0);
            c = (Class<T>) t.getClass();
        }
        return write(res, data, c);
    }
    /**
     * 导出
     * @param res {@link HttpServletResponse}
     * @param data {@link List}<{@link T}>
     * @param c {@link Class}<{@link T}>：获取配置信息的注解类；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-1-9 17:18:02
     */
    public static <T> WriterSheetBuilder write(HttpServletResponse res, List<T> data, Class<T> c) throws IOException {
        return write(res, data, c, c == null ? StringUtils.EMPTY : desc(c));
    }
    /**
     * 导出
     * @param res {@link HttpServletResponse}
     * @param data {@link List}<{@link T}>：为空时，无法获取表头；
     * @param name {@link String}：名称；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-1-9 17:18:02
     */
    @SuppressWarnings("unchecked")
    public static <T> WriterSheetBuilder write(HttpServletResponse res, List<T> data, String name) throws IOException {
        Class<T> c = null;
        if (data != null && !data.isEmpty()) {
            T t = data.get(0);
            c = (Class<T>) t.getClass();
        }
        return write(res, data, c, name);
    }
    /**
     * 导出
     * @param res {@link HttpServletResponse}
     * @param data {@link List}<{@link T}>
     * @param c {@link Class}<{@link T}>：获取配置信息的注解类；
     * @param name {@link String}：名称；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-1-9 17:18:02
     */
    public static <T> WriterSheetBuilder write(HttpServletResponse res, List<T> data, Class<T> c, String name) throws IOException {
        return write(res, data, c, name + "-" + LocalDateTime.now().format(DateTimeFormatter.ofPattern(DateUtil.format6)), name);
    }
    /**
     * 导出
     * @param res {@link HttpServletResponse}
     * @param data {@link List}<{@link T}>
     * @param c {@link Class}<{@link T}>：获取配置信息的注解类；
     * @param fnm {@link String}：文件名；
     * @param sheetNm {@link String}：sheet页名称；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-1-9 17:18:02
     */
    public static <T> WriterSheetBuilder write(HttpServletResponse res, List<T> data, Class<T> c, String fnm, String sheetNm) throws IOException {
        WriterSheetBuilder ws = create(res, c, fnm, sheetNm);
        ws.doWrite(data);
        return ws;
    }

    /**
     * 创建文件
     * @param res {@link HttpServletResponse}
     * @param c {@link Class}<{@link T}>：获取配置信息的注解类；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-3-29 10:02:02
     */
    public static <T> WriterSheetBuilder create(HttpServletResponse res, Class<T> c) throws IOException {
        return create(res, c, c == null ? StringUtils.EMPTY : desc(c));
    }
    /**
     * 创建文件
     * @param res {@link HttpServletResponse}
     * @param c {@link Class}<{@link T}>：获取配置信息的注解类；
     * @param name {@link String}：名称；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-3-29 10:02:02
     */
    public static <T> WriterSheetBuilder create(HttpServletResponse res, Class<T> c, String name) throws IOException {
        return create(res, c, name + "-" + LocalDateTime.now().format(DateTimeFormatter.ofPattern(DateUtil.format6)), name);
    }
    /**
     * 创建文件
     * @param res {@link HttpServletResponse}
     * @param c {@link Class}<{@link T}>：获取配置信息的注解类；
     * @param fnm {@link String}：文件名；
     * @param sheetNm {@link String}：sheet页名称；
     * @return {@link WriterSheetBuilder}
     * @author shf
     * @throws IOException
     * @date 2021-3-29 10:02:02
     */
    public static <T> WriterSheetBuilder create(HttpServletResponse res, Class<T> c, String fnm, String sheetNm) throws IOException {
        ExcelWriterBuilder ew = EasyExcel.write(resHead(res, fnm).getOutputStream(), c);
        ew.registerConverter(LocalDateTimeConverter.get());
        return new WriterSheetBuilder(ew.sheet(sheetNm));
    }

    /**
     * 响应头
     * @param res {@link HttpServletResponse}
     * @param fnm {@link String}
     * @return {@link HttpServletResponse}
     * @throws UnsupportedEncodingException
     * @author shf
     * @date 2021-3-29 10:37:39
     */
    private static HttpServletResponse resHead(HttpServletResponse res, String fnm) throws UnsupportedEncodingException {
        if (StringUtils.isBlank(fnm)) {
            fnm = LocalDateTime.now().format(DateTimeFormatter.ofPattern(DateUtil.format6));
        }
        String utf8 = StandardCharsets.UTF_8.name();
        String encFnm = URLEncoder.encode(fnm, utf8) + ".xls";
        res.setCharacterEncoding(utf8);
        res.setContentType("application/vnd.ms-excel; charset=" + utf8);
        res.setHeader("Content-Disposition", "attachment; filename=" + encFnm + "; filename*=" + utf8 + "''" + encFnm);
        return res;
    }
    /**
     * 获取{@link ApiModel}描述
     * @param c {@link Class}<?>
     * @return {@link String}
     * @author shf
     * @date 2021-1-26 15:52:05
     */
    private static String desc(Class<?> c) {
        if (c == Object.class) {
            return null;
        }
        ApiModel anno = c.getAnnotation(ApiModel.class);
        if (anno != null) {
            return anno.description();
        }
        return desc(c.getSuperclass());
    }

    /**
     * Sheet装饰器
     * @author shf
     * @date 2021-3-29 16:56:53
     */
    public static class WriterSheetBuilder extends ExcelWriterSheetBuilder {
        private ExcelWriter excelWriter;

        public WriterSheetBuilder(ExcelWriterSheetBuilder ws) {
            super();
            Map<Field, Object> m = this.cp(ws);
            try {
                this.excelWriter = (ExcelWriter) m.get(ExcelWriterSheetBuilder.class.getDeclaredField("excelWriter"));
            } catch (NoSuchFieldException | SecurityException e) {
            }
        }

        public ExcelWriter getExcelWriter() {
            return this.excelWriter;
        }

        private Map<Field, Object> cp(ExcelWriterSheetBuilder ws) {
            if (ws == null) {
                return null;
            }
            Class<? extends ExcelWriterSheetBuilder> c = ws.getClass();
            Field[] fs = c.getDeclaredFields();
            Map<Field, Object> r = new HashMap<>(fs.length);
            for (int i = 0; i < fs.length; i++) {
                Field f = fs[i];
                f.setAccessible(true);
                try {
                    Object v = f.get(ws);
                    f.set(this, v);
                    r.put(f, v);
                } catch (IllegalArgumentException | IllegalAccessException e) {
                }
            }
            return r;
        }
    }
}
View Code
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参考文章：

https://blog.csdn.net/qq_41514643/article/details/106993760

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