BomWeb/src/utils/exportExcl.js

// import { createCellPos } from './translateNumToLetter'
const Excel = require('exceljs');

import FileSaver from 'file-saver';

export function getExcelBolob(luckysheet) {
  // 参数为luckysheet.getluckysheetfile()获取的对象
  // 1.创建工作簿，可以为工作簿添加属性
  const workbook = new Excel.Workbook();
  // 2.创建表格，第二个参数可以配置创建什么样的工作表
  if (Object.prototype.toString.call(luckysheet) === '[object Object]') {
    luckysheet = [luckysheet];
  }
  luckysheet.forEach(function(table) {
    if (table.data.length === 0) return true;
    // ws.getCell('B2').fill = fills.
    const worksheet = workbook.addWorksheet(table.name);
    const merge = (table.config && table.config.merge) || {};
    const borderInfo = (table.config && table.config.borderInfo) || {};
    // 3.设置单元格合并,设置单元格边框,设置单元格样式,设置值
    setStyleAndValue(table.data, worksheet);
    setMerge(merge, worksheet);
    setBorder(borderInfo, worksheet);
    return true;
  });
  const buffer = workbook.xlsx.writeBuffer().then(data => {
    // console.log('data', data)
    const blob = new Blob([data], {
      type: 'application/vnd.ms-excel;charset=utf-8',
    });
    return blob;
  });
  return buffer;
}

export default function exportExcel(luckysheet, value) {
  // return
  // 4.写入 buffer
  getExcelBolob(luckysheet).then(blob => {
    console.log('导出成功！');
    FileSaver.saveAs(blob, `${value}.xlsx`);
  });
}

var setMerge = function(luckyMerge = {}, worksheet) {
  const mergearr = Object.values(luckyMerge);
  mergearr.forEach(function(elem) {
    // elem格式：{r: 0, c: 0, rs: 1, cs: 2}
    // 按开始行，开始列，结束行，结束列合并（相当于 K10:M12）
    worksheet.mergeCells(elem.r + 1, elem.c + 1, elem.r + elem.rs, elem.c + elem.cs);
  });
};

var setBorder = function(luckyBorderInfo, worksheet) {
  if (!Array.isArray(luckyBorderInfo)) return;
  // console.log('luckyBorderInfo', luckyBorderInfo)
  luckyBorderInfo.forEach(function(elem) {
    // 现在只兼容到borderType 为range的情况
    // console.log('ele', elem)
    if (elem.rangeType === 'range') {
      let border = borderConvert(elem.borderType, elem.style, elem.color);
      let rang = elem.range[0];
      // console.log('range', rang)
      let row = rang.row;
      let column = rang.column;
      for (let i = row[0] + 1; i < row[1] + 2; i++) {
        for (let y = column[0] + 1; y < column[1] + 2; y++) {
          worksheet.getCell(i, y).border = border;
        }
      }
    }
    if (elem.rangeType === 'cell') {
      // col_index: 2
      // row_index: 1
      // b: {
      //   color: '#d0d4e3'
      //   style: 1
      // }
      const { col_index, row_index } = elem.value;
      const borderData = Object.assign({}, elem.value);
      delete borderData.col_index;
      delete borderData.row_index;
      let border = addborderToCell(borderData, row_index, col_index);
      // console.log('bordre', border, borderData)
      if (row_index === undefined || col_index === undefined) return;
      worksheet.getCell(row_index + 1, col_index + 1).border = border;
    }
    // console.log(rang.column_focus + 1, rang.row_focus + 1)
    // worksheet.getCell(rang.row_focus + 1, rang.column_focus + 1).border = border
  });
};
var setStyleAndValue = function(cellArr, worksheet) {
  if (!Array.isArray(cellArr)) return;
  cellArr.forEach(function(row, rowid) {
    row.every(function(cell, columnid) {
      if (!cell) return true;
      let fill = fillConvert(cell.bg);
      if (fill?.fgColor?.argb && fill?.fgColor?.argb.includes('rgb'))
        fill.fgColor.argb = rgbToHex(fill.fgColor.argb);

      let font = fontConvert(cell.ff, cell.fc, cell.bl, cell.it, cell.fs, cell.cl, cell.ul);
      let alignment = alignmentConvert(cell.vt, cell.ht, cell.tb, cell.tr);
      let value = '';

      if (cell.f) {
        value = { formula: cell.f, result: cell.v };
      } else if (!cell.v && cell.ct && cell.ct.s) {
        // xls转为xlsx之后，内部存在不同的格式，都会进到富文本里，即值不存在与cell.v，而是存在于cell.ct.s之后
        // value = cell.ct.s[0].v
        cell.ct.s.forEach(arr => {
          value += arr.v;
        });
      } else {
        value = cell.v;
      }
      //  style 填入到_value中可以实现填充色
      let letter = createCellPos(columnid);
      let target = worksheet.getCell(letter + (rowid + 1));
      // console.log('1233', letter + (rowid + 1))
      for (const key in fill) {
        target.fill = fill;
        break;
      }
      target.font = font;
      target.alignment = alignment;
      target.value = value;

      return true;
    });
  });
};

var fillConvert = function(bg) {
  if (!bg) {
    return {};
  }
  // const bgc = bg.replace('#', '')
  let fill = {
    type: 'pattern',
    pattern: 'solid',
    fgColor: { argb: bg.replace('#', '') },
  };
  return fill;
};

var fontConvert = function(ff = 0, fc = '#000000', bl = 0, it = 0, fs = 10, cl = 0, ul = 0) {
  // luckysheet：ff(样式), fc(颜色), bl(粗体), it(斜体), fs(大小), cl(删除线), ul(下划线)
  const luckyToExcel = {
    0: '微软雅黑',
    1: '宋体（Song）',
    2: '黑体（ST Heiti）',
    3: '楷体（ST Kaiti）',
    4: '仿宋（ST FangSong）',
    5: '新宋体（ST Song）',
    6: '华文新魏',
    7: '华文行楷',
    8: '华文隶书',
    9: 'Arial',
    10: 'Times New Roman ',
    11: 'Tahoma ',
    12: 'Verdana',
    num2bl: function(num) {
      return num === 0 ? false : true;
    },
  };
  // 出现Bug，导入的时候ff为luckyToExcel的val

  let font = {
    name: typeof ff === 'number' ? luckyToExcel[ff] : ff,
    family: 1,
    size: fs,
    color: { argb: fc.replace('#', '') },
    bold: luckyToExcel.num2bl(bl),
    italic: luckyToExcel.num2bl(it),
    underline: luckyToExcel.num2bl(ul),
    strike: luckyToExcel.num2bl(cl),
  };

  return font;
};

var alignmentConvert = function(vt = 'default', ht = 'default', tb = 'default', tr = 'default') {
  // luckysheet:vt(垂直), ht(水平), tb(换行), tr(旋转)
  const luckyToExcel = {
    vertical: {
      0: 'middle',
      1: 'top',
      2: 'bottom',
      default: 'top',
    },
    horizontal: {
      0: 'center',
      1: 'left',
      2: 'right',
      default: 'left',
    },
    wrapText: {
      0: false,
      1: false,
      2: true,
      default: false,
    },
    textRotation: {
      0: 0,
      1: 45,
      2: -45,
      3: 'vertical',
      4: 90,
      5: -90,
      default: 0,
    },
  };

  let alignment = {
    vertical: luckyToExcel.vertical[vt],
    horizontal: luckyToExcel.horizontal[ht],
    wrapText: luckyToExcel.wrapText[tb],
    textRotation: luckyToExcel.textRotation[tr],
  };
  return alignment;
};

var borderConvert = function(borderType, style = 1, color = '#000') {
  // 对应luckysheet的config中borderinfo的的参数
  if (!borderType) {
    return {};
  }
  const luckyToExcel = {
    type: {
      'border-all': 'all',
      'border-top': 'top',
      'border-right': 'right',
      'border-bottom': 'bottom',
      'border-left': 'left',
    },
    style: {
      0: 'none',
      1: 'thin',
      2: 'hair',
      3: 'dotted',
      4: 'dashDot', // 'Dashed',
      5: 'dashDot',
      6: 'dashDotDot',
      7: 'double',
      8: 'medium',
      9: 'mediumDashed',
      10: 'mediumDashDot',
      11: 'mediumDashDotDot',
      12: 'slantDashDot',
      13: 'thick',
    },
  };
  let template = {
    style: luckyToExcel.style[style],
    color: { argb: color.replace('#', '') },
  };
  let border = {};
  if (luckyToExcel.type[borderType] === 'all') {
    border['top'] = template;
    border['right'] = template;
    border['bottom'] = template;
    border['left'] = template;
  } else {
    border[luckyToExcel.type[borderType]] = template;
  }
  // console.log('border', border)
  return border;
};

function addborderToCell(borders, row_index, col_index) {
  let border = {};
  const luckyExcel = {
    type: {
      l: 'left',
      r: 'right',
      b: 'bottom',
      t: 'top',
    },
    style: {
      0: 'none',
      1: 'thin',
      2: 'hair',
      3: 'dotted',
      4: 'dashDot', // 'Dashed',
      5: 'dashDot',
      6: 'dashDotDot',
      7: 'double',
      8: 'medium',
      9: 'mediumDashed',
      10: 'mediumDashDot',
      11: 'mediumDashDotDot',
      12: 'slantDashDot',
      13: 'thick',
    },
  };
  // console.log('borders', borders)
  for (const bor in borders) {
    if (borders[bor].color?.indexOf('rgb') === -1) {
      border[luckyExcel.type[bor]] = {
        style: luckyExcel.style[borders[bor].style],
        color: { argb: borders[bor].color.replace('#', '') },
      };
    } else {
      border[luckyExcel.type[bor]] = {
        style: luckyExcel.style[borders[bor].style],
        color: { argb: borders[bor].color },
      };
    }
  }

  return border;
}

function createCellPos(n) {
  let ordA = 'A'.charCodeAt(0);

  let ordZ = 'Z'.charCodeAt(0);
  let len = ordZ - ordA + 1;
  let s = '';
  while (n >= 0) {
    s = String.fromCharCode((n % len) + ordA) + s;

    n = Math.floor(n / len) - 1;
  }
  return s;
}

function rgbToHex(rgbString) {
  // var rgbString = "rgb(255, 255, 255)";
  var hexColor = 'FFFFFF';

  // 使用正则表达式匹配出数字部分
  var match = rgbString?.match(/\d+/g);

  if (match) {
    var r = parseInt(match[0]); // 第一个匹配项是红色分量
    var g = parseInt(match[1]); // 第二个匹配项是绿色分量
    var b = parseInt(match[2]); // 第三个匹配项是蓝色分量

    console.log('Red:', r);
    console.log('Green:', g);
    console.log('Blue:', b);
    // 将每个RGB分量转换为十六进制，并确保至少两位
    var redHex = r.toString(16).padStart(2, '0');
    var greenHex = g.toString(16).padStart(2, '0');
    var blueHex = b.toString(16).padStart(2, '0');

    // 将三个分量的十六进制值连接起来
    hexColor = redHex + greenHex + blueHex;

    // 转换为大写字母形式
    hexColor = hexColor.toUpperCase();
  }
  return hexColor;
}