vue项目前端实现将table导出成excel功能

适用条件

原生tabel或者使用elementui的table组件，对于基础表格或者有合并单元格的情况，都可以导出

弊端：导出的excel不兼容页面table的样式，不兼容冻结功能。如需控制样式，需要在公共方法中通过代码来判断添加样式

1、安装以下插件，注意，不同版本可能会有不同的报错，最好锁定以下版本来安装

“xlsx”: “^0.17.4”,
“xlsx-style”: “^0.8.13”
“file-saver”: “^2.0.5”
注意：安装成功后，启动项目会报一下错误

解决办法：
（1）、需要将node_modules->xlsx-style->dist->cpexcel.js中807行的内容替换成以下内容，否则会报错找不到cpexcel.js文件
var cpt = require(‘./cpt’ + ‘able’); 改为 var cpt = ‘./cptable’;
（2）、在vue.config.js中做如下配置，推荐使用方法2，此方法对开发环境和打包后的部署都有效

module.exports = {
	chainWebpack: config => {
		config.externals({ './cptable': 'var cptable' })
	}
}

2、引入文件xlsxStyle.utils.js

/*
@author Ctrl
@version 20190917
@aim 对xlsx-style方法进行二次封装 方便调用以导出带样式Excel
@usage XSU.xxxFunction()
*/

import XLSX from 'xlsx'
var XSU;

XSU=({

	//字符串转字符流
	s2ab: function(s) {
		var buf = new ArrayBuffer(s.length);
		var view = new Uint8Array(buf);
		for (var i = 0; i != s.length; ++i)
			view[i] = s.charCodeAt(i) & 0xFF;
		return buf;
	},

	//初始化
	init: function(workBook, sheetName, cell) {
		if (!workBook.Sheets[sheetName][cell].s) {
			workBook.Sheets[sheetName][cell].s = {};
		}
	},

	init1: function(workBook, sheetName, cell, attr) {
		this.init(workBook, sheetName, cell);
		if (!workBook.Sheets[sheetName][cell].s[attr]) {
			workBook.Sheets[sheetName][cell].s[attr] = {};
		}
	},

	init2: function(workBook, sheetName, cell, attr1, attr2) {
		this.init(workBook, sheetName, cell);
		this.init1(workBook, sheetName, cell, attr1);
		if (!workBook.Sheets[sheetName][cell].s[attr1][attr2]) {
			workBook.Sheets[sheetName][cell].s[attr1][attr2] = {};
		}
	},

	//根据ref的单元格范围新建范围内所有单元格,不存在的单元格置为空值,已存在的不处理
	initAllCell: function(workBook, sheetName) {
		var ref = workBook.Sheets[sheetName]["!ref"].split(":");
		var startCell = ref[0];
		var endCell = ref[1];
		console.log(XLSX.utils, '+++=====')
		var sc = XLSX.utils.decode_cell(startCell).c;
		var sr = XLSX.utils.decode_cell(startCell).r;
		var ec = XLSX.utils.decode_cell(endCell).c;
		var er = XLSX.utils.decode_cell(endCell).r;
		var isExist;
		for (let c = sc; c <= ec; c++) { //初始化所有单元格
			for (let r = sr; r <= er; r++) {
				var temp = XLSX.utils.encode_cell({
					c: c,
					r: r
				});
				isExist = false;
				for (let cell in workBook.Sheets[sheetName]) {
					if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
						if (temp == cell) {
							isExist = true;
							break;
						}
					}
				}
				if (!isExist) { //单元格不存在则新建单元格
					XLSX.utils.sheet_add_aoa(workBook.Sheets[sheetName], [
						['']
					], {
						origin: temp
					});
				}

			}
		}
	},

	//单元格合并 startCell=A1 endCell=B5
	mergeCells: function(workBook, sheetName, startCell, endCell) {
		/*var sc = startCell.substr(0, 1).charCodeAt(0) - 65;
		var sr = startCell.substr(1);
		sr = parseInt(sr) - 1;
		var ec = endCell.substr(0, 1).charCodeAt(0) - 65;
		var er = endCell.substr(1)
		er = parseInt(er) - 1;*/

		var sc = XLSX.utils.decode_cell(startCell).c;
		var sr = XLSX.utils.decode_cell(startCell).r;
		var ec = XLSX.utils.decode_cell(endCell).c;
		var er = XLSX.utils.decode_cell(endCell).r;

		var merges = [{
			s: { //s start 始单元格
				c: sc, //cols 开始列
				r: sr //rows 开始行
			},
			e: { //e end  末单元格
				c: ec, //cols 结束列
				r: er //rows 结束行
			}
		}];
		if (!workBook.Sheets[sheetName]["!merges"]) {
			workBook.Sheets[sheetName]["!merges"] = merges;
		} else {
			workBook.Sheets[sheetName]["!merges"] = workBook.Sheets[sheetName]["!merges"].concat(merges);
		}

		return workBook;

	},

	//merges=[{s: {c: 0, r: 0},e: {c: 3, r: 0}}]
	mergeCellsByObj: function(workBook, sheetName, merges) {
		if (workBook.Sheets[sheetName]["!merges"]) {
			workBook.Sheets[sheetName]["!merges"] = workBook.Sheets[sheetName]["!merges"].concat(merges);
		} else {
			workBook.Sheets[sheetName]["!merges"] = merges;
		}

		return workBook;

	},


	//设置每列列宽,单位px cols= [{wpx: 45}, {wpx: 165}, {wpx: 45}, {wpx: 45}]
	setColWidth: function(workBook, sheetName, cols) {
		workBook.Sheets[sheetName]["!cols"] = cols;
		return workBook;
	},

	//一次性设置多样式 styles etc：
	/*
	{
	  "font": {
	    "sz": 14,
	    "bold": true,
	    "color": {
	      "rgb": "FFFFAA00"
	    }
	  },
	  "fill": {
	    "bgColor": {
	      "indexed": 64
	    },
	    "fgColor": {
	      "rgb": "FFFFFF00"
	    }
	  }
	}
	*/
	setCellStyle: function(workBook, sheetName, cell, styles) {
		workBook.Sheets[sheetName][cell].s = styles;
		return workBook;
	},

	/*Fill*/

	//填充颜色 fill={"bgColor": {"indexed": 64},"fgColor": {"rgb": "FFFFFF00"}}
	setFillStyles: function(workBook, sheetName, cell, styles) {
		this.init(workBook, sheetName, cell);
		workBook.Sheets[sheetName][cell].s.fill = styles;
		return workBook;
	},

	setFillStylesAll: function(workBook, sheetName, styles) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFillStyles(workBook, sheetName, cell, styles);
			}
		}
	},

	//patternType="solid" or "none"”
	setFillPatternType: function(workBook, sheetName, cell, patternType) {
		this.init1(workBook, sheetName, cell, "fill");
		workBook.Sheets[sheetName][cell].s.fill.patternType = patternType;
		return workBook;
	},

	setFillPatternTypeAll: function(workBook, sheetName, patternType) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFillPatternType(workBook, sheetName, cell, patternType);
			}
		}
	},

	//前景颜色(单元格颜色) rgb
	//COLOR_SPEC属性值:{ auto: 1}指定自动值,{ rgb: "FFFFAA00" }指定16进制的ARGB,{ theme: "1", tint: "-0.25"}指定主题颜色和色调的整数索引（默认值为0）,{ indexed: 64} 默认值 fill.bgColor
	setFillFgColor: function(workBook, sheetName, cell, COLOR_SPEC) {
		this.init1(workBook, sheetName, cell, "fill");
		workBook.Sheets[sheetName][cell].s.fill.fgColor = COLOR_SPEC;
		return workBook;
	},

	setFillFgColorAll: function(workBook, sheetName, COLOR_SPEC) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFillFgColor(workBook, sheetName, cell, COLOR_SPEC);
			}
		}
	},

	//使用RGB值设置颜色
	setFillFgColorRGB: function(workBook, sheetName, cell, rgb) {
		this.init2(workBook, sheetName, cell, "fill", "fgColor");
		workBook.Sheets[sheetName][cell].s.fill.fgColor.rgb = rgb;
		return workBook;
	},

	setFillFgColorRGBAll: function(workBook, sheetName, rgb) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFillFgColorRGB(workBook, sheetName, cell, rgb);
			}
		}
	},

	//单元格背景颜色（貌似没用）
	setFillBgColor: function(workBook, sheetName, cell, COLOR_SPEC) {
		this.init1(workBook, sheetName, cell, "fill");
		workBook.Sheets[sheetName][cell].s.fill.bgColor = COLOR_SPEC;
		return workBook;
	},

	setFillBgColorAll: function(workBook, sheetName, COLOR_SPEC) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFillBgColor(workBook, sheetName, cell, COLOR_SPEC);
			}
		}
	},

	//单元格背景颜色
	setFillBgColorRGB: function(workBook, sheetName, cell, rgb) {
		this.init2(workBook, sheetName, cell, "fill", "bgColor");
		workBook.Sheets[sheetName][cell].s.fill.bgColor.rgb = rgb;
		return workBook;
	},

	setFillBgColorRGBAll: function(workBook, sheetName, rgb) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFillBgColorRGB(workBook, sheetName, cell, rgb);
			}
		}
	},

	/*Font*/

	//字体风格，可一次性在styles中设置所有font风格
	setFontStyles: function(workBook, sheetName, cell, styles) {
		this.init(workBook, sheetName, cell);
		workBook.Sheets[sheetName][cell].s.font = styles;
		return workBook;
	},

	setFontStylesAll: function(workBook, sheetName, styles) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontStyles(workBook, sheetName, cell, styles);
			}
		}
	},

	//字体 type="Calibri"
	setFontType: function(workBook, sheetName, cell, type) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.name = type;
		return workBook;
	},

	setFontTypeAll: function(workBook, sheetName, type) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontType(workBook, sheetName, cell, type);
			}
		}
	},

	//字体大小
	setFontSize: function(workBook, sheetName, cell, size) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.sz = size;
		return workBook;
	},

	setFontSizeAll: function(workBook, sheetName, size) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontSize(workBook, sheetName, cell, size);
			}
		}
	},

	//字体颜色 COLOR_SPEC
	setFontColor: function(workBook, sheetName, cell, COLOR_SPEC) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.color = COLOR_SPEC;
		//workBook.Sheets[sheetName][cell].s.font.color.rgb = rgb;
		return workBook;
	},

	setFontColorAll: function(workBook, sheetName, COLOR_SPEC) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontColor(workBook, sheetName, cell, COLOR_SPEC);
			}
		}
	},

	//字体颜色RGB
	setFontColorRGB: function(workBook, sheetName, cell, rgb) {
		this.init2(workBook, sheetName, cell, "font", "color");
		workBook.Sheets[sheetName][cell].s.font.color.rgb = rgb;
		return workBook;
	},

	setFontColorRGBAll: function(workBook, sheetName, rgb) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontColorRGB(workBook, sheetName, cell, rgb);
			}
		}
	},

	//是否粗体 boolean isBold
	setFontBold: function(workBook, sheetName, cell, isBold) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.bold = isBold;
		return workBook;
	},

	setFontBoldAll: function(workBook, sheetName, isBold) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontBold(workBook, sheetName, cell, isBold);
			}
		}
	},

	//设置某列为粗体
	setFontBoldOfCols: function(workBook, sheetName, isBold, col) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				if (cell.substr(0, 1) == col) {
					this.setFontBold(workBook, sheetName, cell, isBold);
				}
			}
		}
	},

	//设置某行为粗体
	setFontBoldOfRows: function(workBook, sheetName, isBold, row) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				if (cell.substr(1) == row) {
					this.setFontBold(workBook, sheetName, cell, isBold);
				}
			}
		}
	},

	//是否下划线 boolean isUnderline
	setFontUnderline: function(workBook, sheetName, cell, isUnderline) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.underline = isUnderline;
		return workBook;
	},

	setFontUnderlineAll: function(workBook, sheetName, isUnderline) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontUnderline(workBook, sheetName, cell, isUnderline);
			}
		}
	},

	//是否斜体 boolean isItalic
	setFontItalic: function(workBook, sheetName, cell, isItalic) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.italic = isItalic;
		return workBook;
	},

	setFontItalicAll: function(workBook, sheetName, isItalic) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontItalic(workBook, sheetName, cell, isItalic);
			}
		}
	},

	//是否删除线 boolean isStrike
	setFontStrike: function(workBook, sheetName, cell, isStrike) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.strike = isStrike;
		return workBook;
	},

	setFontStrikeAll: function(workBook, sheetName, isStrike) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontStrike(workBook, sheetName, cell, isStrike);
			}
		}
	},

	//是否outline boolean isOutline
	setFontOutline: function(workBook, sheetName, cell, isOutline) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.outline = isOutline;
		return workBook;
	},

	setFontOutlineAll: function(workBook, sheetName, isOutline) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontOutline(workBook, sheetName, cell, isOutline);
			}
		}
	},

	//是否阴影 boolean isShadow
	setFontShadow: function(workBook, sheetName, cell, isShadow) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.shadow = isShadow;
		return workBook;
	},

	setFontShadowAll: function(workBook, sheetName, isShadow) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontShadow(workBook, sheetName, cell, isShadow);
			}
		}
	},

	//是否vertAlign boolean isVertAlign
	setFontVertAlign: function(workBook, sheetName, cell, isVertAlign) {
		this.init1(workBook, sheetName, cell, "font");
		workBook.Sheets[sheetName][cell].s.font.vertAlign = isVertAlign;
		return workBook;
	},

	setFontVertAlignAll: function(workBook, sheetName, isVertAlign) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontVertAlign(workBook, sheetName, cell, isVertAlign);
			}
		}
	},

	/*numFmt*/

	setNumFmt: function(workBook, sheetName, cell, numFmt) {
		this.init(workBook, sheetName, cell);
		workBook.Sheets[sheetName][cell].s.numFmt = numFmt;
		return workBook;
	},

	setNumFmtAll: function(workBook, sheetName, numFmt) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setNumFmt(workBook, sheetName, cell, numFmt);
			}
		}
	},

	/*Alignment*/

	//文本对齐 alignment={vertical:top,horizontal:top,}
	setAlignmentStyles: function(workBook, sheetName, cell, styles) {
		this.init(workBook, sheetName, cell);
		workBook.Sheets[sheetName][cell].s.alignment = styles;
		return workBook;
	},

	setAlignmentStylesAll: function(workBook, sheetName, styles) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setAlignmentStyles(workBook, sheetName, cell, styles);
			}
		}
	},

	//文本垂直对齐 vertical	="bottom" or "center" or "top"
	setAlignmentVertical: function(workBook, sheetName, cell, vertical) {
		this.init1(workBook, sheetName, cell, "alignment");
		workBook.Sheets[sheetName][cell].s.alignment.vertical = vertical;
		return workBook;
	},

	setAlignmentVerticalAll: function(workBook, sheetName, vertical) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setAlignmentVertical(workBook, sheetName, cell, vertical);
			}
		}
	},

	//文本水平对齐 "bottom" or "center" or "top"
	setAlignmentHorizontal: function(workBook, sheetName, cell, horizontal) {
		this.init1(workBook, sheetName, cell, "alignment");
		workBook.Sheets[sheetName][cell].s.alignment.horizontal = horizontal;
		return workBook;
	},

	setAlignmentHorizontalAll: function(workBook, sheetName, horizontal) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setAlignmentHorizontal(workBook, sheetName, cell, horizontal);
			}
		}
	},

	//自动换行
	setAlignmentWrapText: function(workBook, sheetName, cell, isWrapText) {
		this.init1(workBook, sheetName, cell, "alignment");
		workBook.Sheets[sheetName][cell].s.alignment.wrapText = isWrapText;
		return workBook;
	},

	setAlignmentWrapTextAll: function(workBook, sheetName, isWrapText) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setAlignmentWrapText(workBook, sheetName, cell, isWrapText);
			}
		}
	},

	setAlignmentReadingOrder: function(workBook, sheetName, cell, readingOrder) {
		this.init1(workBook, sheetName, cell, "alignment");
		workBook.Sheets[sheetName][cell].s.alignment.readingOrder = readingOrder;
		return workBook;
	},

	setAlignmentReadingOrderAll: function(workBook, sheetName, readingOrder) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setAlignmentReadingOrder(workBook, sheetName, cell, readingOrder);
			}
		}
	},

	//文本旋转角度 0-180，255 is special, aligned vertically
	setAlignmentTextRotation: function(workBook, sheetName, cell, textRotation) {
		this.init1(workBook, sheetName, cell, "alignment");
		workBook.Sheets[sheetName][cell].s.alignment.textRotation = textRotation;
		return workBook;
	},

	setAlignmentTextRotationAll: function(workBook, sheetName, textRotation) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setAlignmentTextRotation(workBook, sheetName, cell, textRotation);
			}
		}
	},

	/*Border*/

	//单元格四周边框默认样式
	borderAll :{
		top: {
			style: 'thin'
		},
		bottom: {
			style: 'thin'
		},
		left: {
			style: 'thin'
		},
		right: {
			style: 'thin'
		}
	},

	//边框默样式：细线黑色
	defaultBorderStyle : {
		style: 'thin'
	},
  // 合并单元格样式
  addMergeBoder: function(wb){
    let cols = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', 'AA', 'AB', 'AC', 'AD', 'AE', 'AF', 'AG', 'AH', 'AI', 'AJ', 'AK', 'AL', 'AM', 'AN', 'AO', 'AP', 'AQ', 'AR', 'AS', 'AT', 'AU', 'AV', 'AW', 'AX', 'AY', 'AZ', 'BA', 'BB', 'BC', 'BD', 'BE', 'BF', 'BG', 'BH', 'BI', 'BJ', 'BK', 'BL', 'BM', 'BN', 'BO', 'BP', 'BQ', 'BR', 'BS', 'BT', 'BU', 'BV', 'BW', 'BX', 'BY', 'BZ',  'CA', 'CB', 'CC', 'CD', 'CE', 'CF', 'CG', 'CH', 'CI', 'CJ', 'CK', 'CL', 'CM', 'CN', 'CO', 'CP', 'CQ', 'CR', 'CS', 'CT', 'CU', 'CV', 'CW', 'CX', 'CY', 'CZ'];
    let style = {
      s: {
        border: {...this.borderAll}
      }
    }
    let range = wb.Sheets.Sheet1['!merges'], ws = wb.Sheets.Sheet1;
    range && range.forEach(item => {
      for(let i = item.s.c; i <= item.e.c; i++){
        ws[`${cols[i]}${Number(item.e.r) + 1}`] = ws[`${cols[i]}${Number(item.e.r) + 1}`] || style;
        for(let k = item.s.r + 2; k <= item.e.r + 1; k++){
          // this.setBorderDefault(wb, sheetName, ws[cols[i] + k]);
          ws[cols[i] + k] = ws[cols[k] + item.e.r] || style;
        }
      }
    })
    return ws;
  },

	//边框 styles={top:{ style:"thin",color:"FFFFAA00"},bottom:{},...}
	setBorderStyles: function(workBook, sheetName, cell, styles) {
		this.init(workBook, sheetName, cell);
		workBook.Sheets[sheetName][cell].s.border = styles;
		return workBook;
	},

	setBorderStylesAll: function(workBook, sheetName, styles) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderStyles(workBook, sheetName, cell, styles);
			}
		}
	},

	//设置单元格上下左右边框默认样式
	setBorderDefault: function(workBook, sheetName, cell) {
		this.init(workBook, sheetName, cell);
		workBook.Sheets[sheetName][cell].s.border = this.borderAll;
		return workBook;
	},

	//设置所有单元默认格边框
	setBorderDefaultAll: function(workBook, sheetName) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderDefault(workBook, sheetName, cell);
			}
		}
	},

	//上边框
	setBorderTop: function(workBook, sheetName, cell, top) {
		this.init(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.top = top;
		return workBook;
	},

	setBorderTopAll: function(workBook, sheetName, top) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderTop(workBook, sheetName, cell, top);
			}
		}
	},

	//上边框默样式
	setBorderTopDefault: function(workBook, sheetName, cell) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.top = this.defaultBorderStyle;
		return workBook;
	},

	setBorderTopDefaultAll: function(workBook, sheetName) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderTopDefault(workBook, sheetName, cell);
			}
		}
	},

	//下边框
	setBorderBottom: function(workBook, sheetName, cell, bottom) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.bottom = bottom;
		return workBook;
	},

	setBorderBottomAll: function(workBook, sheetName, bottom) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderBottom(workBook, sheetName, cell, bottom);
			}
		}
	},


	//下边框默样式
	setBorderBottomDefault: function(workBook, sheetName, cell) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.bottom = this.defaultBorderStyle;
		return workBook;
	},

	setBorderBottomDefaultAll: function(workBook, sheetName) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderBottomDefault(workBook, sheetName, cell);
			}
		}
	},

	//左边框
	setBorderLeft: function(workBook, sheetName, cell, left) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.left = left;
		return workBook;
	},

	setBorderLeftAll: function(workBook, sheetName, left) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderLeft(workBook, sheetName, cell, left);
			}
		}
	},

	setBorderLeftDefault: function(workBook, sheetName, cell) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.left = this.defaultBorderStyle;
		return workBook;
	},

	setBorderLeftDefaultAll: function(workBook, sheetName) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderLeftDefault(workBook, sheetName, cell);
			}
		}
	},

	//右边框
	setBorderRight: function(workBook, sheetName, cell, right) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.right = right;
		return workBook;
	},

	setBorderRightAll: function(workBook, sheetName, right) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderRight(workBook, sheetName, cell, right);
			}
		}
	},
	setBorderRightDefault: function(workBook, sheetName, cell) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.right = this.defaultBorderStyle;
		return workBook;
	},

	setBorderRightDefaultAll: function(workBook, sheetName) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderRightDefault(workBook, sheetName, cell);
			}
		}
	},

	//对角线
	setBorderDiagonal: function(workBook, sheetName, cell, diagonal) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.diagonal = diagonal;
		return workBook;
	},

	setBorderDiagonalAll: function(workBook, sheetName, diagonal) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderDiagonal(workBook, sheetName, cell, diagonal);
			}
		}
	},

	setBorderDiagonalDefault: function(workBook, sheetName, cell) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.diagonal = this.defaultBorderStyle;
		return workBook;
	},

	setBorderDiagonalDefaultAll: function(workBook, sheetName) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderDiagonalDefault(workBook, sheetName, cell);
			}
		}
	},

	setBorderDiagonalUp: function(workBook, sheetName, cell, isDiagonalUp) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.diagonalUp = isDiagonalUp;
		return workBook;
	},

	setBorderDiagonalUpAll: function(workBook, sheetName, isDiagonalUp) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderDiagonalUp(workBook, sheetName, cell, isDiagonalUp);
			}
		}
	},

	setBorderDiagonalDown: function(workBook, sheetName, cell, isDiagonalDown) {
		this.init1(workBook, sheetName, cell, "border");
		workBook.Sheets[sheetName][cell].s.border.diagonalDown = isDiagonalDown;
		return workBook;
	},

	setBorderDiagonalDownAll: function(workBook, sheetName, isDiagonalDown) {
		this.initAllCell(workBook, sheetName);
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setBorderDiagonalDown(workBook, sheetName, cell, isDiagonalDown);
			}
		}
	},

	//默认样式，多单元格设置样式

	//设置所有单元格字体样式
	setFgColorStylesAll: function(workBook, sheetName, fontType, fontColor, fontSize) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				this.setFontType(workBook, sheetName, cell, fontType);
				this.setFontColorRGB(workBook, sheetName, cell, fontColor);
				this.setFontSize(workBook, sheetName, cell, fontSize);
			}
		}
	},

	//设置第一行标题自定义样式
	setTitleStyles: function(workBook, sheetName, fgColor, fontColor, alignment, isBold, fontSize, ) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				let row = cell.substr(1);
				if (row == '1') {
					this.setFillFgColorRGB(workBook, sheetName, cell, fgColor);
					this.setFontColor(workBook, sheetName, cell, fontColor);
					this.setAlignmentHorizontal(workBook, sheetName, cell, alignment);
					this.setFontBold(workBook, sheetName, cell, isBold);
					this.setFontSize(workBook, sheetName, cell, fontSize);
				}
			}
		}
	},

	//设置第一行标题默认样式
	setTitleStylesDefault: function(workBook, sheetName) {
		for (let cell in workBook.Sheets[sheetName]) {
			let row = cell.substr(1);
			if (row == '1') {
				//setFillFgColorRGB(workBook, sheetName, cell, 'FFFF00');
				this.setAlignmentHorizontal(workBook, sheetName, cell, 'center');
				this.setFontBold(workBook, sheetName, cell, true);
				this.setFontSize(workBook, sheetName, cell, '20');
			}
		}
	},

	//设置双数行背景色灰色，便于阅读
	setEvenRowColorGrey: function(workBook, sheetName) {
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				let row = parseInt(cell.substr(1));
				if (row % 2 == 0) {

					this.setFillFgColorRGB(workBook, sheetName, cell, 'DCDCDC');
				}

			}
		}
	},

	//合并同一列中内容一样的相邻行
	mergeSameColCells: function(workBook,sheetName,col) {
		var cells=[];
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				if (cell.substr(0, 1) == col) {
					cells.push(cell);//获得该列单元格数组，升序
				}
			}
		}
		for(var i = 0;i<cells.length-1;){
			for(var j=i+1;j<cells.length;j++){
				//内容一样且不为空则合并
				if(workBook.Sheets[sheetName][cells[i]].v == workBook.Sheets[sheetName][cells[j]].v && workBook.Sheets[sheetName][cells[i]].v != ""){
					this.mergeCells(workBook,sheetName,cells[i],cells[j]);
					if(j==cells.length-1){
						i=j;
					}
				}
				else{	//当且仅当相邻的两个cell值相同时才合并
					i=j;
					break;
				}
			}
		}
	},

	//合并同一行中内容一样的相邻列
	mergeSameRowCells: function(workBook,sheetName,row) {
		var cells=[];
		for (let cell in workBook.Sheets[sheetName]) {
			if (cell != '!cols' && cell != '!merges' && cell != '!ref') {
				if (cell.substr(1) == row) {
					cells.push(cell);//获得该列单元格数组，升序
				}
			}
		}
		for(var i = 0;i<cells.length-1;){
			for(var j=i+1;j<cells.length;j++){
				if(workBook.Sheets[sheetName][cells[i]].v == workBook.Sheets[sheetName][cells[j]].v){
					this.mergeCells(workBook,sheetName,cells[i],cells[j]);
					if(j==cells.length-1){
						i=j;
					}
				}
				else{	//当且仅当相邻的两个cell值相同时才合并
					i=j;
					break;
				}
			}
		}
	},

	//当前表格最大行数 return int
	getMaxRow: function(workBook,sheetName) {
		var length = 0;
		for (var ever in workBook.Sheets[sheetName]) {
			let temp = parseInt(ever.substr(1));
			if (temp > length) {
				length = temp;
			}
		}
		return length;
	},

	//当前表格最大列数 A起步 return string
	getMaxCol: function(workBook,sheetName) {
		var length = 'A';
		for (var ever in workBook.Sheets[sheetName]) {
			let temp = ever.substr(0, 1);
			if (temp > length) {
				length = temp;
			}
		}
		return length;
	},

})
export default XSU;

3、导出的公共方法文件

import FileSaver from 'file-saver'
import XLSX from 'xlsx'
import xlsxStyle from 'xlsx-style'
import XSU from './../assets/js/xlsxStyle.utils'
// 表格导出成excel
export const exportFile = (dom, name, date) => {
// dom: 目标div的id，如document.querySelector('#tableToExcel')
// name: 自定义导出excel的名称
// date: 追加日期
    // let name = this.$route.meta.name;
    let fileName = name
    let fix = document.querySelector('.el-table__fixed');
    let wb
    if (fix) {
        dom.children[0].removeChild(fix);
        wb = XLSX.utils.table_to_book(document.querySelector('#tableToExcel'), {raw: true});
        dom.children[0].appendChild(fix);
    } else {
        wb = XLSX.utils.table_to_book(dom, {raw: true});
    }
    let sheetName = wb.SheetNames[0];
    for (let key in wb.Sheets.Sheet1) {
        // debugger;
        if (wb.Sheets.Sheet1[key].v === '操作') {
            delete wb.Sheets.Sheet1[key];
        }
        if (Object.prototype.toString.call(wb.Sheets.Sheet1[key]) === '[object Object]') {
            XSU.setAlignmentVertical(wb, sheetName, key, 'center'); // 垂直居中
            XSU.setAlignmentHorizontal(wb, sheetName, key, 'left'); // 水平居中
            XSU.setAlignmentWrapText(wb, sheetName, key, false); // 自动换行
            XSU.setBorderDefault(wb, sheetName, key);
            wb.Sheets.Sheet1[key].v = `   ${text}`// 修改单元格内容
            XSU.setFillStyles(wb, sheetName, key,{"fgColor": {"rgb": "e5f6fc"}});// 给单元格添加背景色
        }
    }
    // 合并单元格增加边框
    XSU.addMergeBoder(wb);
    let wbout = xlsxStyle.write(wb, {bookType: 'xlsx', bookSST: false, type: 'binary'});
    try {
        FileSaver.saveAs(new Blob([XSU.s2ab(wbout)], {type: 'application/octet-stream'}), fileName + '_' + date + '.xlsx')
    } catch (e) {
        if (typeof console !== 'undefined') console.log(e, wbout)
    }
    // this.isOnclick = false;
    return wbout

}

4、使用

在需要使用的vue文件中，

import { exportFile } from '@/utils/util'// 路径为exportFile方法所在的js文件的路径
exportFile(document.querySelector('#tableToExcelDaily'),'能源指标日报',`${state.dateRange[0]}-${state.dateRange[1]}`);