easypoi 导出Excel

计一次excel 导出

最终结果

将统计字段和查询的信息放在同一个对象之后，创建一个相对的一对多关系表

如下

@Data
@ExcelTarget("storeRank")
public class storeRank {
    @Excel(name = "门店名字", orderNum = "1", width = 25, needMerge = true)
    private String storeName;
    @ExcelCollection(name = "信息", orderNum = "2")
    private List list;
}

其相对应的StoreRankVo 的结构为对应的单个查询明细

@Data
public class StoreRankVo {
    @Excel(name = "承运商名字", width = 20)
    private String carriersName;
    @Excel(name = "票数", width = 20)
    private String num;
    @Excel(name = "运费", width = 20)
    private String money;
}

由于表头相对复杂，所以这里使用的是easyPoi 其 needMerge 可以很好的自适应对应的字段的高度

处理的数据结构如下

[
    {
        "storeName": "浙江省杭州市龙湖金沙天街店-XX",
        "list": [
            {
                "num": "21",
                "money": "116.0",
                "carriersName": "京东快递"
            },
            {
                "num": "6",
                "money": "252.0",
                "carriersName": "京东物流"
            },
            {
                "num": "27",
                "money": "368.0",
                "carriersName": "总计"
            }
        ]
    },
    {
        "storeName": "浙江省杭州市西湖区西溪天街店-XXX",
        "list": [
            {
                "num": "44",
                "money": "251.5",
                "carriersName": "京东快递"
            },
            {
                "num": "1",
                "money": "16.2",
                "carriersName": "顺丰速运(陆运产品)"
            },
            {
                "num": "45",
                "money": "267.7",
                "carriersName": "总计"
            }
        ]
    }
]

部分代码如下

   HashMap map = new HashMap<>();
   			//此处门店id
            List list = storeBrandsDao.getSoreID("");
            //根据查询条件和门店列表获取门店的排行信息
            map.put("ids", list);
            LinkedList objects = new LinkedList<>();
            for (String s : list
            ) {
                LinkedList rankVoLinkedList = new LinkedList<>();
                String senderStoreName = orderDao.selectList(new QueryWrapper().lambda().eq(ConfigOrder::getSenderStoreID, s)).get(0).getSenderStoreName();
                map.put("storeId", s);
                List> maps = orderDao.testDeliveryRank(map);
                // 得到 总计
                double countMoney = 0;
                Integer countNum = 0;
                //得到门店之外的参数
                for (int i = 0; i < maps.size(); i++) {
                    Object money = maps.get(i).get("money");
                    Object num = maps.get(i).get("num");
                    Object carriersName = maps.get(i).get("carriersName");
                    countMoney = Double.parseDouble(money.toString()) + countMoney;
                    countNum = Integer.valueOf(num.toString()) + countNum;
                    StoreRankVo rankVo = new StoreRankVo();
                    rankVo.setMoney(money.toString());
                    rankVo.setNum(num.toString());
                    rankVo.setCarriersName((String) carriersName);
                    rankVoLinkedList.add(rankVo);
                }
                StoreRankVo rankVo = new StoreRankVo();
                rankVo.setCarriersName((String) "总计");
                rankVo.setMoney(String.valueOf(countMoney));
                rankVo.setNum(String.valueOf(countNum));
                rankVoLinkedList.add(rankVo);
                // 添加一对多
                storeRank rank = new storeRank();
                rank.setStoreName(senderStoreName);
                rank.setList(rankVoLinkedList);
                objects.add(rank);
            }
				
            String title = "门店信息"; //标题名
            String sheetName = "门店信息"; //表名
            ExcelUtils.exportExcel(objects, title, sheetName, storeRank.class, "门店信息" + System.currentTimeMillis(), response);

此处附上工具类

package com.dp_admin_server.utils;

import cn.afterturn.easypoi.excel.ExcelExportUtil;
import cn.afterturn.easypoi.excel.ExcelImportUtil;
import cn.afterturn.easypoi.excel.entity.ExportParams;
import cn.afterturn.easypoi.excel.entity.ImportParams;
import cn.afterturn.easypoi.excel.entity.enmus.ExcelType;
import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.apache.poi.hssf.usermodel.HSSFCell;
import org.apache.poi.hssf.usermodel.HSSFRow;
import org.apache.poi.hssf.usermodel.HSSFSheet;
import org.apache.poi.hssf.usermodel.HSSFWorkbook;
import org.apache.poi.ss.usermodel.Workbook;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.IOException;
import java.io.InputStream;
import java.net.URLEncoder;
import java.util.List;
import java.util.Map;
import java.util.NoSuchElementException;
import java.util.Set;



public class ExcelUtils {

    
    public static void exportExcel(List> list, String fileName, HttpServletResponse response) throws IOException {
        defaultExport(list, fileName, response);
    }

    
    private static void defaultExport(List> list, String fileName, HttpServletResponse response) throws IOException {
        //把数据添加到excel表格中
        Workbook workbook = ExcelExportUtil.exportExcel(list, ExcelType.HSSF);
        downLoadExcel(fileName, response, workbook);
    }

    
    private static void defaultExport(List list, Class pojoClass, String fileName, HttpServletResponse response, ExportParams exportParams) throws IOException {
        //把数据添加到excel表格中
        Workbook workbook = ExcelExportUtil.exportExcel(exportParams, pojoClass, list);
        downLoadExcel(fileName, response, workbook);
    }

    
    public static void exportExcel(List list, Class pojoClass, String fileName, ExportParams exportParams, HttpServletResponse response) throws IOException {
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }

    
    public static void exportExcel(List list, String title, String sheetName, Class pojoClass, String fileName, HttpServletResponse response) throws IOException {
        defaultExport(list, pojoClass, fileName, response, new ExportParams(title, sheetName, ExcelType.XSSF));
    }


    
    public static void exportExcel(List list, String title, String sheetName, Class pojoClass, String fileName, boolean isCreateHeader, HttpServletResponse response) throws IOException {
        ExportParams exportParams = new ExportParams(title, sheetName, ExcelType.XSSF);
        exportParams.setCreateHeadRows(isCreateHeader);
        defaultExport(list, pojoClass, fileName, response, exportParams);
    }


    
    private static void downLoadExcel(String fileName, HttpServletResponse response, Workbook workbook) throws IOException {
        try {
            response.setCharacterEncoding("UTF-8");
            response.setHeader("content-Type", "application/vnd.ms-excel");
            response.setHeader("Content-Disposition", "attachment;filename=" + URLEncoder.encode(fileName + ".xlsx", "UTF-8"));
            workbook.write(response.getOutputStream());
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }


    
    public static  List importExcel(MultipartFile file, Class pojoClass) throws IOException {
        return importExcel(file, 1, 1, pojoClass);
    }

    
    public static  List importExcel(String filePath, Integer titleRows, Integer headerRows, Class pojoClass) throws IOException {
        if (StringUtils.isBlank(filePath)) {
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        params.setNeedSave(true);
        params.setSaveUrl("/excel/");
        try {
            return ExcelImportUtil.importExcel(new File(filePath), pojoClass, params);
        } catch (NoSuchElementException e) {
            throw new IOException("模板不能为空");
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }


    
    public static  List importExcel(MultipartFile file, Integer titleRows, Integer headerRows, Class pojoClass) throws IOException {
        if (file == null) {
            return null;
        }
        try {
            return importExcel(file.getInputStream(), titleRows, headerRows, pojoClass);
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    
    public static  List importExcel(InputStream inputStream, Integer titleRows, Integer headerRows, Class pojoClass) throws IOException {
        if (inputStream == null) {
            return null;
        }
        ImportParams params = new ImportParams();
        params.setTitleRows(titleRows);
        params.setHeadRows(headerRows);
        params.setSaveUrl("/excel/");
        params.setNeedSave(true);
        try {
            return ExcelImportUtil.importExcel(inputStream, pojoClass, params);
        } catch (NoSuchElementException e) {
            throw new IOException("excel文件不能为空");
        } catch (Exception e) {
            throw new IOException(e.getMessage());
        }
    }

    
    public static HSSFWorkbook jsonToExcel(JSONArray jsonArray) throws IOException {
        Set keys = null;
        // 创建HSSFWorkbook对象
        HSSFWorkbook wb = new HSSFWorkbook();
        // 创建HSSFSheet对象
        HSSFSheet sheet = wb.createSheet("sheet0");

        int roleNo = 0;
        int rowNo = 0;
        // 创建HSSFRow对象
        HSSFRow row = sheet.createRow(roleNo++);
        // 创建HSSFCell对象
        // 创建表格标题
        keys = jsonArray.getJSONObject(0).keySet();
        for (String s : keys) {
            HSSFCell cell = row.createCell(rowNo++);
            cell.setCellValue(s);
        }
        rowNo = 0;

        for (int i = 0; i < jsonArray.size(); i++) {
            JSONObject jsonObject = jsonArray.getJSONObject(i);
            row = sheet.createRow(roleNo++);
            for (String s : keys) {
                HSSFCell cell = row.createCell(rowNo++);
                cell.setCellValue(jsonObject.getString(s));
            }
            rowNo = 0;
        }

        return wb;
    }

}

easypoi 导出Excel

Java相关栏目本月热门文章