在vue中将数据导出为excel文件file-saver+xlsx+script-loader

下载依赖

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

创建文件在这里插入代码片

Blob.js和Export2Excel.js

文件中添加如下代码
Blob.js

在vue中将数据导出为excel文件file-saver+xlsx+script-loader_第1张图片

文件中添加如下代码

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!./Blob');  //引用当前目录下的Blob.js模块
require('script-loader!xlsx/dist/xlsx.core.min');
//由于这几个文件不支持import引入,所以我们需要`script-loader`来将他们挂载到全局环境下
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")
}

使用

在models中创建以下方法:

export2Excel(){
                require.ensure([],()=>{
                    const {export_json_to_excel } = require('../../lib/Export2Excel.js')  //刚刚新建Export2Excel.js文件的路径
                    const tHeader = ['生成时间','温度']   //自定义列名
                    const filterVal = ['timenow','temp']   //对应自段
                    const list = this.temp   //table数据
                    const data = this.formatJson(filterVal,list);
                    export_json_to_excel(tHeader,data,'列表excel');  //导出文件名称
                })
                },
formatJson(filterVal,jsonData){
                console.info(jsonData)
                return jsonData.map(v => filterVal.map(j=> v[j]))
            },
port(){
               this.export2Excel()
           },


点击下载按钮触发下载

<el-button size="small" type="success" @click="port">导出为excel表格</el-button>

参考博客:
https://www.cnblogs.com/liudaya/p/12982237.html
————————————————
版权声明:本文为CSDN博主「rennan…」的原创文章,遵循CC 4.0 BY-SA版权协议,转载请附上原文出处链接及本声明。
原文链接:https://blog.csdn.net/qq_45632139/article/details/106426881

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