luckysheet 后端poi导出成excel,导出和原始导入excel样式一样

参考：Luckysheet 导入导出 - Java后台处理和js前端实现_u014632228的博客-CSDN博客_luckysheet导出前言：之前看了好多导出方法，导出的excel表格列宽变大，行高变高等问题。后面单个去调整，目前导出的excel是和导入的excel能够保持样式列宽行高一样。不过没有将计算公式带入到导出。

上代码： poi 是3.17 版本 

excelData 是前端传的luckysheet报表json数据：luckySheet.getAllSheets()；

package com.ts.comm.util;

import com.alibaba.fastjson.JSONArray;
import com.alibaba.fastjson.JSONObject;
import org.apache.poi.ss.usermodel.BorderStyle;
import org.apache.poi.ss.usermodel.FillPatternType;
import org.apache.poi.ss.usermodel.HorizontalAlignment;
import org.apache.poi.ss.usermodel.VerticalAlignment;
import org.apache.poi.ss.util.CellRangeAddress;
import org.apache.poi.xssf.usermodel.*;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletResponse;
import java.awt.*;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;


public class LuckySheetExportUtil {
    
    public static void exportLuckySheetXlsxByPOI(HttpServletResponse response, String excelData) {
        excelData = excelData.replace("
", "\r\n");//去除luckysheet中 
 的换行
        JSonArray jsonArray = (JSONArray) JSONObject.parse(excelData);
        XSSFWorkbook excel = new XSSFWorkbook();
        ServletOutputStream outputStream = null;
        for (int sheetIndex = 0; sheetIndex < jsonArray.size(); sheetIndex++) {
            JSonObject jsonObject = (JSONObject) jsonArray.get(sheetIndex);
            JSonArray celldataObjectList = jsonObject.getJSonArray("celldata");
            JSonArray rowObjectList = jsonObject.getJSonArray("visibledatarow");
            JSonArray colObjectList = jsonObject.getJSonArray("visibledatacolumn");
            JSonArray dataObjectList = jsonObject.getJSonArray("data");
            JSonObject mergeObject = jsonObject.getJSonObject("config").getJSonObject("merge");//合并单元格
            JSonObject columnlenObject = jsonObject.getJSonObject("config").getJSonObject("columnlen");//表格列宽
            JSonObject rowlenObject = jsonObject.getJSonObject("config").getJSonObject("rowlen");//表格行高
            JSonArray borderInfoObjectList = jsonObject.getJSonObject("config").getJSonArray("borderInfo");//边框样式
            //参考：https://blog.csdn.net/jdtugfcg/article/details/84100315
            //创建操作Excel的XSSFWorkbook对象

            XSSFCellStyle cellStyle = excel.createCellStyle();
            //创建XSSFSheet对象
            XSSFSheet sheet = excel.createSheet(jsonObject.getString("name"));

            //我们都知道excel是表格，即由一行一行组成的，那么这一行在java类中就是一个XSSFRow对象，我们通过XSSFSheet对象就可以创建XSSFRow对象
            //如：创建表格中的第一行（我们常用来做标题的行)  XSSFRow firstRow = sheet.createRow(0); 注意下标从0开始
            //根据luckysheet创建行列
            //创建行和列
            int rowSize = rowObjectList.size();
            for (int i = 0; i < rowSize; i++) {
                XSSFRow row = sheet.createRow(i);//创建行
                try {
//                    row.setHeightInPoints(Float.parseFloat(rowlenObject.get(i) + ""));//行高px值   最原始写法
                    //luckysheet 行高 * 0.75 四舍五入取整后的值为excel导出的行高值
                    row.setHeightInPoints(Float.parseFloat(Math.round(rowlenObject.getInteger(i + "") * 0.75) + ""));//行高px值
                } catch (Exception e) {
                    row.setHeightInPoints(20f);//默认行高
                }

                double sheetLen;
                int colSize = colObjectList.size();
                for (int j = 0; j < colSize; j++) {
                    if (columnlenObject.getInteger(j + "") != null) {
//                        sheet.setColumnWidth(j, columnlenObject.getInteger(j + "") * 34);//列宽px值 最原始写法
                        //luckysheet (宽度-3)/8 = excel的宽度    (int)(excel宽度+0.62)*256 = 导出表格实际列宽
                        //double sheetLen = (columnlenObject.getInteger(j + "") - 3) / 8;
                        sheetLen = (double) (columnlenObject.getInteger(j + "") - 3) / 8;
                        sheet.setColumnWidth(j, (int) ((sheetLen + 0.62) * 256));//列宽px值
                    }
                    row.createCell(j);//创建列
                }
            }

            //设置值,样式
            setCellValue(celldataObjectList, borderInfoObjectList, sheet, excel);
        }

        try {
            outputStream = response.getOutputStream();
            excel.write(outputStream);
            outputStream.flush();
            outputStream.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            try {
                if (outputStream != null) {
                    outputStream.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }


    }


    
    private static void setMergeAndColorByObject(com.alibaba.fastjson.JSonObject jsonObjectValue, XSSFSheet sheet, XSSFCellStyle style) {
        JSonObject mergeObject = (JSONObject) jsonObjectValue.get("mc");
        if (mergeObject != null) {
            int r = (int) (mergeObject.get("r"));
            int c = (int) (mergeObject.get("c"));
            if ((mergeObject.get("rs") != null && (mergeObject.get("cs") != null))) {
                int rs = (int) (mergeObject.get("rs"));
                int cs = (int) (mergeObject.get("cs"));
                CellRangeAddress region = new CellRangeAddress(r, r + rs - 1, (short) (c), (short) (c + cs - 1));
                sheet.addMergedRegion(region);
            }
        }

        if (jsonObjectValue.getString("bg") != null) {
            int bg = Integer.parseInt(jsonObjectValue.getString("bg").replace("#", ""), 16);
            style.setFillPattern(FillPatternType.SOLID_FOREGROUND);    //设置填充方案
            style.setFillForegroundColor(new XSSFColor(new Color(bg)));  //设置填充颜色
        }

    }

    
    private static void setBorder(JSonArray borderInfoObjectList, XSSFWorkbook workbook, XSSFSheet sheet) {
        //设置边框样式map
        Map bordMap = new HashMap<>();
        bordMap.put(1, BorderStyle.THIN);
        bordMap.put(2, BorderStyle.HAIR);
        bordMap.put(3, BorderStyle.DOTTED);
        bordMap.put(4, BorderStyle.DASHED);
        bordMap.put(5, BorderStyle.DASH_DOT);
        bordMap.put(6, BorderStyle.DASH_DOT_DOT);
        bordMap.put(7, BorderStyle.DOUBLE);
        bordMap.put(8, BorderStyle.MEDIUM);
        bordMap.put(9, BorderStyle.MEDIUM_DASHED);
        bordMap.put(10, BorderStyle.MEDIUM_DASH_DOT);
        bordMap.put(11, BorderStyle.MEDIUM_DASH_DOT_DOT);
        bordMap.put(12, BorderStyle.SLANTED_DASH_DOT);
        bordMap.put(13, BorderStyle.THICK);

        //一定要通过 cell.getCellStyle()  不然的话之前设置的样式会丢失
        //设置边框
        for (int i = 0; i < borderInfoObjectList.size(); i++) {
            JSonObject borderInfoObject = (JSONObject) borderInfoObjectList.get(i);
            if (borderInfoObject.get("rangeType").equals("cell")) {//单个单元格
                JSonObject borderValueObject = borderInfoObject.getJSonObject("value");

                JSonObject l = borderValueObject.getJSonObject("l");
                JSonObject r = borderValueObject.getJSonObject("r");
                JSonObject t = borderValueObject.getJSonObject("t");
                JSonObject b = borderValueObject.getJSonObject("b");


                int row = borderValueObject.getInteger("row_index");
                int col = borderValueObject.getInteger("col_index");

                XSSFCell cell = sheet.getRow(row).getCell(col);


                if (l != null) {
                    cell.getCellStyle().setBorderLeft(bordMap.get((int) l.get("style"))); //左边框
                    int bg = Integer.parseInt(l.getString("color").replace("#", ""), 16);
                    cell.getCellStyle().setLeftBorderColor(new XSSFColor(new Color(bg)));//左边框颜色
                }
                if (r != null) {
                    cell.getCellStyle().setBorderRight(bordMap.get((int) r.get("style"))); //右边框
                    int bg = Integer.parseInt(r.getString("color").replace("#", ""), 16);
                    cell.getCellStyle().setRightBorderColor(new XSSFColor(new Color(bg)));//右边框颜色
                }
                if (t != null) {
                    cell.getCellStyle().setBorderTop(bordMap.get((int) t.get("style"))); //顶部边框
                    int bg = Integer.parseInt(t.getString("color").replace("#", ""), 16);
                    cell.getCellStyle().setTopBorderColor(new XSSFColor(new Color(bg)));//顶部边框颜色
                }
                if (b != null) {
                    cell.getCellStyle().setBorderBottom(bordMap.get((int) b.get("style"))); //底部边框
                    int bg = Integer.parseInt(b.getString("color").replace("#", ""), 16);
                    cell.getCellStyle().setBottomBorderColor(new XSSFColor(new Color(bg)));//底部边框颜色
                }
            } else if (borderInfoObject.get("rangeType").equals("range")) {//选区
                int bg_ = Integer.parseInt(borderInfoObject.getString("color").replace("#", ""), 16);
                int style_ = borderInfoObject.getInteger("style");

                JSonObject rangObject = (JSONObject) ((JSONArray) (borderInfoObject.get("range"))).get(0);

                JSonArray rowList = rangObject.getJSonArray("row");
                JSonArray columnList = rangObject.getJSonArray("column");


                for (int row_ = rowList.getInteger(0); row_ < rowList.getInteger(rowList.size() - 1) + 1; row_++) {
                    for (int col_ = columnList.getInteger(0); col_ < columnList.getInteger(columnList.size() - 1) + 1; col_++) {
                        XSSFCell cell = sheet.getRow(row_).getCell(col_);

                        cell.getCellStyle().setBorderLeft(bordMap.get(style_)); //左边框
                        cell.getCellStyle().setLeftBorderColor(new XSSFColor(new Color(bg_)));//左边框颜色
                        cell.getCellStyle().setBorderRight(bordMap.get(style_)); //右边框
                        cell.getCellStyle().setRightBorderColor(new XSSFColor(new Color(bg_)));//右边框颜色
                        cell.getCellStyle().setBorderTop(bordMap.get(style_)); //顶部边框
                        cell.getCellStyle().setTopBorderColor(new XSSFColor(new Color(bg_)));//顶部边框颜色
                        cell.getCellStyle().setBorderBottom(bordMap.get(style_)); //底部边框
                        cell.getCellStyle().setBottomBorderColor(new XSSFColor(new Color(bg_)));//底部边框颜色 }
                    }
                }
            }
        }
    }

    
    private static void setCellValue(JSonArray jsonObjectList, JSonArray borderInfoObjectList, XSSFSheet
            sheet, XSSFWorkbook workbook) {
        //设置字体大小和颜色
        Map fontMap = new HashMap<>();
        fontMap.put(-1, "Arial");
        fontMap.put(0, "Times New Roman");
        fontMap.put(1, "Arial");
        fontMap.put(2, "Tahoma");
        fontMap.put(3, "Verdana");
        fontMap.put(4, "微软雅黑");
        fontMap.put(5, "宋体");
        fontMap.put(6, "黑体");
        fontMap.put(7, "楷体");
        fontMap.put(8, "仿宋");
        fontMap.put(9, "新宋体");
        fontMap.put(10, "华文新魏");
        fontMap.put(11, "华文行楷");
        fontMap.put(12, "华文隶书");

        for (int index = 0; index < jsonObjectList.size(); index++) {
            XSSFCellStyle style = workbook.createCellStyle();//样式
            XSSFFont font = workbook.createFont();//字体样式

            com.alibaba.fastjson.JSonObject object = jsonObjectList.getJSonObject(index);
            String str_ = (int) object.get("r") + "_" + object.get("c") + "=" + ((com.alibaba.fastjson.JSONObject) object.get("v")).get("v") + "n";
            JSonObject jsonObjectValue = ((com.alibaba.fastjson.JSONObject) object.get("v"));

            String value = "";
            if (jsonObjectValue != null) {
                //value = jsonObjectValue.getString("v");//v 值可能是公式值
                value = jsonObjectValue.getString("m");//取m 显示值
                if (value == null || "".equals(value)) {
                    try {
                        value = jsonObjectValue.getJSonObject("ct").getJSonArray("s").getJSonObject(0).getString("v");
                    } catch (Exception e) {
                        //异常不做处理。证明没有值
                    }
                }
            }

            if (sheet.getRow((int) object.get("r")) != null && sheet.getRow((int) object.get("r")).getCell((int) object.get("c")) != null) {
                XSSFCell cell = sheet.getRow((int) object.get("r")).getCell((int) object.get("c"));
//                if (jsonObjectValue != null && jsonObjectValue.get("f") != null) {//如果有公式，设置公式
//                    value = jsonObjectValue.getString("f");
//                    cell.setCellFormula(value.substring(1, value.length()));//不需要=符号
//                }
                //合并单元格与填充单元格颜色
                setMergeAndColorByObject(jsonObjectValue, sheet, style);
                //填充值
                cell.setCellValue(value);
                XSSFRow row = sheet.getRow((int) object.get("r"));

                //设置垂直水平对齐方式
                int vt = jsonObjectValue.getInteger("vt") == null ? 1 : jsonObjectValue.getInteger("vt");//垂直对齐	 0 中间、1 上、2下
                int ht = jsonObjectValue.getInteger("ht") == null ? 1 : jsonObjectValue.getInteger("ht");//0 居中、1 左、2右
                switch (vt) {
                    case 0:
                        style.setVerticalAlignment(VerticalAlignment.CENTER);
                        break;
                    case 1:
                        style.setVerticalAlignment(VerticalAlignment.TOP);
                        break;
                    case 2:
                        style.setVerticalAlignment(VerticalAlignment.BOTTOM);
                        break;
                }
                switch (ht) {
                    case 0:
                        style.setAlignment(HorizontalAlignment.CENTER);
                        break;
                    case 1:
                        style.setAlignment(HorizontalAlignment.LEFT);
                        break;
                    case 2:
                        style.setAlignment(HorizontalAlignment.RIGHT);
                        break;
                }

                //设置合并单元格的样式有问题
                String ff = jsonObjectValue.getString("ff");//0 Times New Roman、 1 Arial、2 Tahoma 、3 Verdana、4 微软雅黑、5 宋体（Song）、6 黑体（ST Heiti）、7 楷体（ST Kaiti）、 8 仿宋（ST FangSong）、9 新宋体（ST Song）、10 华文新魏、11 华文行楷、12 华文隶书
                int fs = jsonObjectValue.getInteger("fs") == null ? 14 : jsonObjectValue.getInteger("fs");//字体大小
                int bl = jsonObjectValue.getInteger("bl") == null ? 0 : jsonObjectValue.getInteger("bl");//粗体	0 常规 、 1加粗
                int it = jsonObjectValue.getInteger("it") == null ? 0 : jsonObjectValue.getInteger("it");//斜体	0 常规 、 1 斜体
                String fc = jsonObjectValue.getString("fc") == null ? "" : jsonObjectValue.getString("fc");//字体颜色
                font.setFontName(fontMap.get(ff));//字体名字

                if (fc.length() > 0) {
                    font.setColor(new XSSFColor(new Color(Integer.parseInt(fc.replace("#", ""), 16))));
                }
                font.setFontName(ff);//字体名字
                font.setFontHeightInPoints((short) fs);//字体大小
                if (bl == 1) {
                    font.setBold(true);//粗体显示
                }
                font.setItalic(it == 1 ? true : false);//斜体

                style.setFont(font);
                style.setWrapText(true);//设置自动换行
                cell.setCellStyle(style);

            } else {
                //数据格式错误
                //System.out.println("错误的=" + index + ">>>" + str_);
            }
        }
        //设置边框
        setBorder(borderInfoObjectList, workbook, sheet);
    }
}

参考：https://blog.csdn.net/u014632228/article/details/109738221