Vue---导入导出Excel

安装依赖

npm install xlsx file-saver -S
npm install script-loader -S -D

src下新建excel文件夹，excel下新建Bolb.js Export2Excel.js文件

Bolb.js：

(function (view) {
    "use strict";
    view.URL = view.URL || view.webkitURL;
    if (view.Blob && view.URL) {
        try {
            new Blob;
            return;
        } catch (e) {}
    }

    var BlobBuilder = view.BlobBuilder || view.WebKitBlobBuilder || view.MozBlobBuilder || (function(view) {
            var
                get_class = function(object) {
                    return Object.prototype.toString.call(object).match(/^\[object\s(.*)\]$/)[1];
                }
                , FakeBlobBuilder = function BlobBuilder() {
                    this.data = [];
                }
                , FakeBlob = function Blob(data, type, encoding) {
                    this.data = data;
                    this.size = data.length;
                    this.type = type;
                    this.encoding = encoding;
                }
                , FBB_proto = FakeBlobBuilder.prototype
                , FB_proto = FakeBlob.prototype
                , FileReaderSync = view.FileReaderSync
                , FileException = function(type) {
                    this.code = this[this.name = type];
                }
                , file_ex_codes = (
                    "NOT_FOUND_ERR SECURITY_ERR ABORT_ERR NOT_READABLE_ERR ENCODING_ERR "
                    + "NO_MODIFICATION_ALLOWED_ERR INVALID_STATE_ERR SYNTAX_ERR"
                ).split(" ")
                , file_ex_code = file_ex_codes.length
                , real_URL = view.URL || view.webkitURL || view
                , real_create_object_URL = real_URL.createObjectURL
                , real_revoke_object_URL = real_URL.revokeObjectURL
                , URL = real_URL
                , btoa = view.btoa
                , atob = view.atob

                , ArrayBuffer = view.ArrayBuffer
                , Uint8Array = view.Uint8Array
                ;
            FakeBlob.fake = FB_proto.fake = true;
            while (file_ex_code--) {
                FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
            }
            if (!real_URL.createObjectURL) {
                URL = view.URL = {};
            }
            URL.createObjectURL = function(blob) {
                var
                    type = blob.type
                    , data_URI_header
                    ;
                if (type === null) {
                    type = "application/octet-stream";
                }
                if (blob instanceof FakeBlob) {
                    data_URI_header = "data:" + type;
                    if (blob.encoding === "base64") {
                        return data_URI_header + ";base64," + blob.data;
                    } else if (blob.encoding === "URI") {
                        return data_URI_header + "," + decodeURIComponent(blob.data);
                    } if (btoa) {
                        return data_URI_header + ";base64," + btoa(blob.data);
                    } else {
                        return data_URI_header + "," + encodeURIComponent(blob.data);
                    }
                } else if (real_create_object_URL) {
                    return real_create_object_URL.call(real_URL, blob);
                }
            };
            URL.revokeObjectURL = function(object_URL) {
                if (object_URL.substring(0, 5) !== "data:" && real_revoke_object_URL) {
                    real_revoke_object_URL.call(real_URL, object_URL);
                }
            };
            FBB_proto.append = function(data/*, endings*/) {
                var bb = this.data;
                // decode data to a binary string
                if (Uint8Array && (data instanceof ArrayBuffer || data instanceof Uint8Array)) {
                    var
                        str = ""
                        , buf = new Uint8Array(data)
                        , i = 0
                        , buf_len = buf.length
                        ;
                    for (; i < buf_len; i++) {
                        str += String.fromCharCode(buf[i]);
                    }
                    bb.push(str);
                } else if (get_class(data) === "Blob" || get_class(data) === "File") {
                    if (FileReaderSync) {
                        var fr = new FileReaderSync;
                        bb.push(fr.readAsBinaryString(data));
                    } else {
                        // async FileReader won't work as BlobBuilder is sync
                        throw new FileException("NOT_READABLE_ERR");
                    }
                } else if (data instanceof FakeBlob) {
                    if (data.encoding === "base64" && atob) {
                        bb.push(atob(data.data));
                    } else if (data.encoding === "URI") {
                        bb.push(decodeURIComponent(data.data));
                    } else if (data.encoding === "raw") {
                        bb.push(data.data);
                    }
                } else {
                    if (typeof data !== "string") {
                        data += ""; // convert unsupported types to strings
                    }
                    // decode UTF-16 to binary string
                    bb.push(unescape(encodeURIComponent(data)));
                }
            };
            FBB_proto.getBlob = function(type) {
                if (!arguments.length) {
                    type = null;
                }
                return new FakeBlob(this.data.join(""), type, "raw");
            };
            FBB_proto.toString = function() {
                return "[object BlobBuilder]";
            };
            FB_proto.slice = function(start, end, type) {
                var args = arguments.length;
                if (args < 3) {
                    type = null;
                }
                return new FakeBlob(
                    this.data.slice(start, args > 1 ? end : this.data.length)
                    , type
                    , this.encoding
                );
            };
            FB_proto.toString = function() {
                return "[object Blob]";
            };
            FB_proto.close = function() {
                this.size = this.data.length = 0;
            };
            return FakeBlobBuilder;
        }(view));

    view.Blob = function Blob(blobParts, options) {
        var type = options ? (options.type || "") : "";
        var builder = new BlobBuilder();
        if (blobParts) {
            for (var i = 0, len = blobParts.length; i < len; i++) {
                builder.append(blobParts[i]);
            }
        }
        return builder.getBlob(type);
    };
}(typeof self !== "undefined" && self || typeof window !== "undefined" && window || this.content || this));

Export2Excel.js:

require('script-loader!file-saver');
import XLSX from 'xlsx'
 
function generateArray(table) {
 var out = [];
 var rows = table.querySelectorAll('tr');
 var ranges = [];
 for (var R = 0; R < rows.length; ++R) {
  var outRow = [];
  var row = rows[R];
  var columns = row.querySelectorAll('td');
  for (var C = 0; C < columns.length; ++C) {
   var cell = columns[C];
   var colspan = cell.getAttribute('colspan');
   var rowspan = cell.getAttribute('rowspan');
   var cellValue = cell.innerText;
   if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;
 
   //Skip ranges
   ranges.forEach(function (range) {
    if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {
     for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
    }
   });
 
   //Handle Row Span
   if (rowspan || colspan) {
    rowspan = rowspan || 1;
    colspan = colspan || 1;
    ranges.push({
     s: {
      r: R,
      c: outRow.length
     },
     e: {
      r: R + rowspan - 1,
      c: outRow.length + colspan - 1
     }
    });
   };
 
   //Handle Value
   outRow.push(cellValue !== "" ? cellValue : null);
 
   //Handle Colspan
   if (colspan)
    for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
  }
  out.push(outRow);
 }
 return [out, ranges];
};
 
function datenum(v, date1904) {
 if (date1904) v += 1462;
 var epoch = Date.parse(v);
 return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
}
 
function sheet_from_array_of_arrays(data, opts) {
 var ws = {};
 var range = {
  s: {
   c: 10000000,
   r: 10000000
  },
  e: {
   c: 0,
   r: 0
  }
 };
 for (var R = 0; R != data.length; ++R) {
  for (var C = 0; C != data[R].length; ++C) {
   if (range.s.r > R) range.s.r = R;
   if (range.s.c > C) range.s.c = C;
   if (range.e.r < R) range.e.r = R;
   if (range.e.c < C) range.e.c = C;
   var cell = {
    v: data[R][C]
   };
   if (cell.v == null) continue;
   var cell_ref = XLSX.utils.encode_cell({
    c: C,
    r: R
   });
 
   if (typeof cell.v === 'number') cell.t = 'n';
   else if (typeof cell.v === 'boolean') cell.t = 'b';
   else if (cell.v instanceof Date) {
    cell.t = 'n';
    cell.z = XLSX.SSF._table[14];
    cell.v = datenum(cell.v);
   } else cell.t = 's';
 
   ws[cell_ref] = cell;
  }
 }
 if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
 return ws;
}
 
function Workbook() {
 if (!(this instanceof Workbook)) return new Workbook();
 this.SheetNames = [];
 this.Sheets = {};
}
 
function s2ab(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;
}
 
export function export_table_to_excel(id) {
 var theTable = document.getElementById(id);
 var oo = generateArray(theTable);
 var ranges = oo[1];
 
 /* original data */
 var data = oo[0];
 var ws_name = "SheetJS";
 
 var wb = new Workbook(),
  ws = sheet_from_array_of_arrays(data);
 
 /* add ranges to worksheet */
 // ws['!cols'] = ['apple', 'banan'];
 ws['!merges'] = ranges;
 
 /* add worksheet to workbook */
 wb.SheetNames.push(ws_name);
 wb.Sheets[ws_name] = ws;
 
 var wbout = XLSX.write(wb, {
  bookType: 'xlsx',
  bookSST: false,
  type: 'binary'
 });
 
 saveAs(new Blob([s2ab(wbout)], {
  type: "application/octet-stream"
 }), "test.xlsx")
}
 
export function export_json_to_excel({
 multiHeader = [],
 header,
 data,
 filename,
 merges = [],
 autoWidth = true,
 bookType = 'xlsx'
} = {}) {
 /* original data */
 filename = filename || 'excel-list'
 data = [...data]
 data.unshift(header);
 
 for (let i = multiHeader.length - 1; i > -1; i--) {
  data.unshift(multiHeader[i])
 }
 
 var ws_name = "SheetJS";
 var wb = new Workbook(),
  ws = sheet_from_array_of_arrays(data);
 
 if (merges.length > 0) {
  if (!ws['!merges']) ws['!merges'] = [];
  merges.forEach(item => {
   ws['!merges'].push(XLSX.utils.decode_range(item))
  })
 }
 
 if (autoWidth) {
  /*设置worksheet每列的最大宽度*/
  const colWidth = data.map(row => row.map(val => {
   /*先判断是否为null/undefined*/
   if (val == null) {
    return {
     'wch': 10
    };
   }
   /*再判断是否为中文*/
   else if (val.toString().charCodeAt(0) > 255) {
    return {
     'wch': val.toString().length * 2
    };
   } else {
    return {
     'wch': val.toString().length
    };
   }
  }))
  /*以第一行为初始值*/
  let result = colWidth[0];
  for (let i = 1; i < colWidth.length; i++) {
   for (let j = 0; j < colWidth[i].length; j++) {
    if (result[j]['wch'] < colWidth[i][j]['wch']) {
     result[j]['wch'] = colWidth[i][j]['wch'];
    }
   }
  }
  ws['!cols'] = result;
 }
 
 /* add worksheet to workbook */
 wb.SheetNames.push(ws_name);
 wb.Sheets[ws_name] = ws;
 
 var wbout = XLSX.write(wb, {
  bookType: bookType,
  bookSST: false,
  type: 'binary'
 });
 saveAs(new Blob([s2ab(wbout)], {
  type: "application/octet-stream"
 }), `${filename}.${bookType}`);
}

修改配置alias:

  alias: {
      'vue$': 'vue/dist/vue.esm.js',
      '@': resolve('src'),
      'excel': path.resolve(__dirname, '../src/excel'), //新增加一行
    }

xlsx这个插件的参数

列表数据导出导入excel文件

<template>
  <div class="exportExcel">
    <div
      class="excel-header"
      style="display: flex;flex-direction: row;justify-content: start;margin:10px"
    >
      <!--导出文件名称-->
      <div class="filename">
        <label class="radio-label" style="padding-left:0;">Filename:</label>
        <el-input
          v-model="filename"
          placeholder="请输入导出文件名"
          style="width:340px;"
          prefix-icon="el-icon-document"
        />
      </div>
      <!--导出文件-->
      <div class="download">
        <el-button type="primary" icon="document" @click="handleDownload">导出Excel</el-button>
      </div>
    </div>

    <el-table :data="list" border fit highlight-current-row height="390px">
      <el-table-column align="center" label="序号" width="95">
        <template slot-scope="scope">{{ scope.$index+1 }}</template>
      </el-table-column>
      <el-table-column label="订单号" width="230">
        <template slot-scope="scope">{{ scope.row.title }}</template>
      </el-table-column>
      <el-table-column label="菜品" align="center">
        <template slot-scope="scope">{{ scope.row.foods }}</template>
      </el-table-column>
      <el-table-column label="收银员" width="110" align="center">
        <template slot-scope="scope">
          <el-tag>{{ scope.row.author }}</el-tag>
        </template>
      </el-table-column>
      <el-table-column label="金额" width="115" align="center">
        <template slot-scope="scope">{{ scope.row.pageviews }}</template>
      </el-table-column>
      <el-table-column align="center" label="时间" width="220">
        <template slot-scope="scope">
          <span>{{ parseTime(scope.row.timestamp )}}</span>
        </template>
      </el-table-column>
    </el-table>
    <!-- 导入 -->
    <el-upload
      ref="upload"
      action="/"
      :show-file-list="false"
      :on-change="importExcel"
      :auto-upload="false"
    >
      <el-button slot="trigger" icon="el-icon-upload" size="small" type="primary">导入</el-button>
    </el-upload>
  </div>
</template>
<script>
// 引入xlsx
import XLSX from 'xlsx'
export default {
  name: "exportExcelDialog",
  data() {
    return {
      // 导出文件名称
      filename: "",
      // 导出文件格式
      bookType: "xlsx",
      // 模拟数据
      list: [
        {
          timestamp: 1432179778664,
          author: "Charles",
          comment_disabled: true,
          content_short: "mock data",
          display_time: "1994-05-25 23:37:25",
          foods: "鸡翅、萝卜、牛肉、红烧大闸蟹、红烧鸡翅",
          id: 1,
          image_uri:
            "https://wpimg.wallstcn.com/e4558086-631c-425c-9430-56ffb46e70b3",
          importance: 3,
          pageviews: 2864,
          platforms: ["a-platform"],
          reviewer: "Sandra",
          status: "published",
          title: "O20190407135010000000001",
          type: "CN"
        },
        {
          timestamp: 1432179778664,
          author: "Charles",
          comment_disabled: true,
          content_short: "mock data",
          display_time: "1994-05-25 23:37:25",
          foods: "鸡翅、萝卜、牛肉、红烧大闸蟹、红烧鸡翅",
          id: 1,
          image_uri:
            "https://wpimg.wallstcn.com/e4558086-631c-425c-9430-56ffb46e70b3",
          importance: 3,
          pageviews: 2864,
          platforms: ["a-platform"],
          reviewer: "Sandra",
          status: "published",
          title: "O20190407135010000000001",
          type: "CN"
        },
        {
          timestamp: 1432179778664,
          author: "Charles",
          comment_disabled: true,
          content_short: "mock data",
          display_time: "1994-05-25 23:37:25",
          foods: "鸡翅、萝卜、牛肉、红烧大闸蟹、红烧鸡翅",
          id: 1,
          image_uri:
            "https://wpimg.wallstcn.com/e4558086-631c-425c-9430-56ffb46e70b3",
          importance: 3,
          pageviews: 2864,
          platforms: ["a-platform"],
          reviewer: "Sandra",
          status: "published",
          title: "O20190407135010000000001",
          type: "CN"
        }
      ],
      xlsxJson:[]
    };
  },
  methods: {
    // 导出Excel表格
    handleDownload() {
      // 懒加载该用法
      import("@/excel/Export2Excel").then(excel => {
        // 设置导出表格的头部
        const tHeader = ["序号", "订单号", "菜品", "收银员", "金额", "时间"];
        // 设置要导出的属性
        const filterVal = [
          "id",
          "title",
          "foods",
          "author",
          "pageviews",
          "display_time"
        ];
        // 将要导出的数据进行一个过滤
        /**
         * 源数据导入到excel的数据每一条重新拼成一个数组,数组里的每个元素就是filterVal里的每个字段
         */
        const data = this.list.map((item, index) => {
          return [
            index + 1,
            item.title,
            item.foods,
            item.author,
            item.pageviews,
            this.parseTime(item.timestamp)
          ];
        });
        // 调用我们封装好的方法进行导出Excel
        excel.export_json_to_excel({
          // 导出的头部
          header: tHeader,
          // 导出的内容
          data,
          // 导出的文件名称
          filename: this.filename,
          // 导出的表格宽度是否自动
          autoWidth: true,
          // 导出文件的后缀类型
          bookType: "xlsx"
        });
      });
    },
    // 过滤时间
    parseTime(date) {
      const dateTime = new Date(date);
      const YY = dateTime.getFullYear();
      const MM =
        dateTime.getMonth() + 1 < 10
          ? "0" + (dateTime.getMonth() + 1)
          : dateTime.getMonth() + 1;
      const D =
        dateTime.getDate() < 10 ? "0" + dateTime.getDate() : dateTime.getDate();
      const hh =
        dateTime.getHours() < 10
          ? "0" + dateTime.getHours()
          : dateTime.getHours();
      const mm =
        dateTime.getMinutes() < 10
          ? "0" + dateTime.getMinutes()
          : dateTime.getMinutes();
      const ss =
        dateTime.getSeconds() < 10
          ? "0" + dateTime.getSeconds()
          : dateTime.getSeconds();
      return `${YY}-${MM}-${D} ${hh}:${mm}`;
    },
    // 上传文件
    importExcel(file) {
      // let file = file.files[0] // 使用传统的input方法需要加上这一步
      const types = file.name.split(".")[1];
      const fileType = ["xlsx", "xlc", "xlm", "xls", "xlt", "xlw", "csv"].some(
        item => item === types
      );
      if (!fileType) {
        alert("格式错误！请重新选择");
        return;
      }
      this.file2Xce(file).then(tabJson => {
        if (tabJson && tabJson.length > 0) {
          this.xlsxJson = tabJson;
        }
        console.log(this.xlsxJson)
      });
    },
    file2Xce(file) {
      return new Promise(function(resolve, reject) {
        const reader = new FileReader();
        reader.onload = function(e) {
          const data = e.target.result;
          this.wb = XLSX.read(data, {
            type: "binary"
          });
          const result = [];
          this.wb.SheetNames.forEach(sheetName => {
            result.push({
              sheetName: sheetName,
              sheet: XLSX.utils.sheet_to_json(this.wb.Sheets[sheetName])
            });
          });
          resolve(result);
        };
        reader.readAsBinaryString(file.raw);
        // reader.readAsBinaryString(file) // 传统input方法
      });
    }
  }
};
</script>

后面有时间会封装成两个单独的组件