EasyExcel根据自定义模板导出Excel

pom ：

          <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>easyexcel</artifactId>
                <version>3.1.0</version>
            </dependency>


            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-resources-plugin</artifactId>
                <configuration>
                    <nonFilteredFileExtensions>
                        <nonFilteredFileExtension>xls</nonFilteredFileExtension>
                        <nonFilteredFileExtension>xlsx</nonFilteredFileExtension>
                    </nonFilteredFileExtensions>
                </configuration>
            </plugin>

xlsx模板：

{name}和{num} 是单项填充数据，{data} 为集合。

业务实现：

java 复制代码

 public void export(QueryVillageConsumerAssistanceRecordDTO request, HttpServletResponse response) {

            
        // 业务逻辑
  
   
        Map<String, Object> map = new HashMap<>();
        // 名字
        map.put("name","导出名字");
        // 总价
        map.put("num", "合计金额");
        // 集合
        ArrayList<Map<String, Object>> list = new ArrayList<>();

        Integer sum = 1;

        // 子表记录
        for (VillageConsumerAssistanceRecordVO x : recordVOList) {

            HashMap hashMap = new HashMap<String, Object>();
            // 序列
            hashMap.put("1", sum);
            // 商品类型
            hashMap.put("2",x.getProductType() );
        
            hashMap.put("3", x.getProducerName());
            
            hashMap.put("4", x.getVillageName());
        
            hashMap.put("5", x.getPurchasingEnterprise());
        
            hashMap.put("6", x.getProductNum())
            // 金额
            hashMap.put("7", x.getProductAllPrice());

            sum++;

            list.add(hashMap);
        }

        try {

            InputStream is = ResourceUtil.getStream("classpath:template/assistance.xlsx");
            // 这里定义最终导出的文件名称
            response.setContentType("application/vnd.ms-excel");
            response.setCharacterEncoding("utf-8");
            String fileName = name + ".xlsx";
            response.setHeader("Content-Disposition",
                    String.format("attachment; filename=%s",
                            URLEncoder.encode(fileName, StandardCharsets.UTF_8.name())));

            // 设置样式
            HorizontalCellStyleStrategy horizontalCellStyleStrategy = new HorizontalCellStyleStrategy(null, StyleUtils.getContentStyle());

            ExcelWriter excelWriter = EasyExcel.write(response.getOutputStream()).registerWriteHandler(horizontalCellStyleStrategy)
                    .withTemplate(is).excelType(ExcelTypeEnum.XLSX).build();

            WriteSheet writeSheet = EasyExcel.writerSheet().build();
            // 单独得map
            excelWriter.fill(map, writeSheet);
            // data 集合
            excelWriter.fill(new FillWrapper("data", list), writeSheet);

            excelWriter.finish();

        } catch (Exception ex) {
            log.error("消费帮扶导出失败 , exception: {}", ex.getMessage());
        }
    }

utils：

java 复制代码

package com.zhihe.village.tempalte;

import com.alibaba.excel.write.metadata.style.WriteCellStyle;
import com.alibaba.excel.write.metadata.style.WriteFont;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;

/**
 * EasyExcel 样式工具类
 */
public class StyleUtils {
    /**
     * 标题样式
     * @return
     */
    public static WriteCellStyle getHeadStyle(){
        // 头的策略
        WriteCellStyle headWriteCellStyle = new WriteCellStyle();
        // 背景颜色
//        headWriteCellStyle.setFillForegroundColor(IndexedColors.LIGHT_TURQUOISE1.getIndex());
//        headWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);

        // 字体
        WriteFont headWriteFont = new WriteFont();
        headWriteFont.setFontName("宋体");//设置字体名字
        headWriteFont.setFontHeightInPoints((short)16);//设置字体大小
        headWriteFont.setBold(true);//字体加粗
        headWriteCellStyle.setWriteFont(headWriteFont); //在样式用应用设置的字体;

        // 样式
        headWriteCellStyle.setBorderBottom(BorderStyle.THIN);//设置底边框;
        headWriteCellStyle.setBottomBorderColor((short) 0);//设置底边框颜色;
        headWriteCellStyle.setBorderLeft(BorderStyle.THIN);  //设置左边框;
        headWriteCellStyle.setLeftBorderColor((short) 0);//设置左边框颜色;
        headWriteCellStyle.setBorderRight(BorderStyle.THIN);//设置右边框;
        headWriteCellStyle.setRightBorderColor((short) 0);//设置右边框颜色;
        headWriteCellStyle.setBorderTop(BorderStyle.THIN);//设置顶边框;
        headWriteCellStyle.setTopBorderColor((short) 0); //设置顶边框颜色;

        headWriteCellStyle.setWrapped(true);  //设置自动换行;

        headWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);//设置水平对齐的样式为居中对齐;
        headWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);  //设置垂直对齐的样式为居中对齐;
        headWriteCellStyle.setShrinkToFit(true);//设置文本收缩至合适

        return headWriteCellStyle;
    }


    /**
     * 内容样式
     * @return
     */
    public static WriteCellStyle getContentStyle(){
        // 内容的策略
        WriteCellStyle contentWriteCellStyle = new WriteCellStyle();

        // 背景绿色
        // 这里需要指定 FillPatternType 为FillPatternType.SOLID_FOREGROUND 不然无法显示背景颜色.头默认了 FillPatternType所以可以不指定
//        contentWriteCellStyle.setFillForegroundColor(IndexedColors.PALE_BLUE.getIndex());
//        contentWriteCellStyle.setFillPatternType(FillPatternType.SOLID_FOREGROUND);

        // 设置字体
        WriteFont contentWriteFont = new WriteFont();
        contentWriteFont.setFontHeightInPoints((short) 16);//设置字体大小
        contentWriteFont.setFontName("宋体"); //设置字体名字
        contentWriteCellStyle.setWriteFont(contentWriteFont);//在样式用应用设置的字体;

        //设置样式;
        contentWriteCellStyle.setBorderBottom(BorderStyle.THIN);//设置底边框;
        contentWriteCellStyle.setBottomBorderColor((short) 0);//设置底边框颜色;
        contentWriteCellStyle.setBorderLeft(BorderStyle.THIN);  //设置左边框;
        contentWriteCellStyle.setLeftBorderColor((short) 0);//设置左边框颜色;
        contentWriteCellStyle.setBorderRight(BorderStyle.THIN);//设置右边框;
        contentWriteCellStyle.setRightBorderColor((short) 0);//设置右边框颜色;
        contentWriteCellStyle.setBorderTop(BorderStyle.THIN);//设置顶边框;
        contentWriteCellStyle.setTopBorderColor((short) 0); ///设置顶边框颜色;

        contentWriteCellStyle.setHorizontalAlignment(HorizontalAlignment.CENTER);// 水平居中
        contentWriteCellStyle.setVerticalAlignment(VerticalAlignment.CENTER);// 垂直居中
        contentWriteCellStyle.setWrapped(true); //设置自动换行;

//        contentWriteCellStyle.setShrinkToFit(true);//设置文本收缩至合适

        return contentWriteCellStyle;
    }
}

项目结构：