vue 导出excel

1、安装三个依赖包

　　npm install -S file-saver

　　npm install -S xlsx

　　npm install -D script-loader

2、在项目中创建一个文件夹（比如vendor，一般是在src目录下创建）

把Blob.js和 Export2Excel.js这两个文件夹放到新建的文件夹内,如图：

Blob.js：

/* eslint-disable */
/* Blob.js
 * A Blob implementation.
 * 2014-05-27
 *
 * By Eli Grey, http://eligrey.com
 * By Devin Samarin, https://github.com/eboyjr
 * License: X11/MIT
 *   See LICENSE.md
 */

/*global self, unescape */
/*jslint bitwise: true, regexp: true, confusion: true, es5: true, vars: true, white: true,
 plusplus: true */

/*! @source http://purl.eligrey.com/github/Blob.js/blob/master/Blob.js */

(function (view) {
    "use strict";

    view.URL = view.URL || view.webkitURL;

    if (view.Blob && view.URL) {
        try {
            new Blob;
            return;
        } catch (e) {}
    }

    // Internally we use a BlobBuilder implementation to base Blob off of
    // in order to support older browsers that only have BlobBuilder
    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：

 /* eslint-disable */
 require('script-loader!file-saver');
 require('script-loader!vendor/Blob');
 require('script-loader!xlsx/dist/xlsx.core.min');
 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);
     console.log('a')
     var oo = generateArray(theTable);
     var ranges = oo[1];

     /* original data */
     var data = oo[0];
     var ws_name = "SheetJS";
     console.log(data);

     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")
 }

 function formatJson(jsonData) {
     console.log(jsonData)
 }
 export function export_json_to_excel(th, jsonData, defaultTitle) {

     /* original data */

     var data = jsonData;
     data.unshift(th);
     var ws_name = "SheetJS";

     var wb = new Workbook(), ws = sheet_from_array_of_arrays(data);

     /* 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'});
     var title = defaultTitle || '列表'
     saveAs(new Blob([s2ab(wbout)], {type: "application/octet-stream"}), title + ".xlsx")
 }

3、在页面中使用

 <template>
   <f7-page :name="$route.route.name" :class="$route.route.name" pull-to-refresh>
     <navbar :title="$route.route.title"></navbar>
   <button style='margin-bottom:20px;' type="primary" icon="document" @click="handleDownload" >导出excel</button>
   <table data="tableData" style="width: 100%">
     <tr>
     <td prop="id" label="名称" width="180"></td>
     <td prop="name"  label="姓名"  width="180">
     </td>
     </tr>
   </table>
   </f7-page>
 </template>

 export default {
     data(){
       return{
         table:[{
           id:1,
           name:'测试1'
         },{
           id:2,
           name:'测试2'
         },{
           id:3,
           name:'测试3'
         }]
       }
     },
     methods:{
       handleDownload() {
         this.downloadLoading = true
         require.ensure([], () => {
           const { export_json_to_excel } = require('../../vendor/Export2Excel')
           const tHeader = ['ID', '姓名']
           const filterVal = ['id', 'name']
           const list = this.table
           const data = this.formatJson(filterVal, list)
           export_json_to_excel(tHeader, data, '列表excel')
           this.downloadLoading = false
         })
       },
       formatJson(filterVal, jsonData) {
         return jsonData.map(v => filterVal.map(j => v[j]))
       }
     }
   }

4.在main.js（全局js文件）中加入如下代码：

在webpack.base.conf.js中加入

出现下面的错误：

首先按照提示运行该语句，如果还是不行，则需要查看上面的路径配置。然后就解决了