有学有练才叫学习:学而不思则罔,思而不学则殆:学而不习,纸上谈兵,习而不进,画地为牢!

如何在VUE项目中实现导出excel表格(实现方式)

vue 炮渣日记 1个月前 (11-07) 82次浏览 已收录 0个评论 扫描二维码

简介

项目中经常会用到导入数据的场景,这里介绍 VUE 中如何使用插件 xlsx 导出数据

安装3个依赖

cnpm安装:

cnpm install --save xlsx //电子表格格式的解析器
cnpm install --save file-saver // 用来生成文件的web应用程序
cnpm install -D script-loader //将js挂在在全局下

yarn安装:

yarn add xlsx
yarn add file-saver
yarn add script-loader

导入2个js文件

Blob.js和Export2Excel.js (文件名最好别改,否则你会有无穷无尽的麻烦,大神除外!)

在public文件夹下的静态文件夹里放入Blob.js和Export2Excel.js两个JS文件

比如我这里目录如下

public
  └─static
     └─js
       └─excel
           ├─Blob.js
           ├─Export2Excel.js

在main.js中全局引入

import Blob from './public/static/js/excel/Blob.js'
import Export2Excel from './public/static/js/excel/Export2Excel.js'

修改Export2Excel.js

把路径修改到你自己文件的位置

require('script-loader!file-saver')
/* 这里的路径换成自己的 */
require('./public/static/js/Blob.js')
require('script-loader!xlsx/dist/xlsx.core.min')

使用

<template>
    <div>
        <button @click="exportExcel">导出Excel</button>
        <table>此处省略代码</table>
    </div>
</template>
<script>
export default {
    data () {
        return {
            tableData: []
        }
    },
    methods: {
        exportExcel() {
          require.ensure([], () => {
            const { export_json_to_excel } = require("./public/static/js/Export2Excel") // 路径改为你项目里的路径
            const tHeader = ["编号","喵名称","喵性别","喵年龄"] //生成Excel表格的头部标题栏
            const filterVal = ["id","name","gender","age"] //生成Excel表格的内容栏(根据自己的数据内容属性填写)
            const data = this.formatJson(filterVal, this.tableData)
            export_json_to_excel(tHeader, data, "统计表") //这里可以定义你的Excel表的默认名称
          });
        },
        formatJson(filterVal, jsonData) {
          return jsonData.map(v => filterVal.map(j => v[j]));
        }
    }
}
</script>

附上js文件内容,不想去github下载的,可以直接复制使用

Blob.js

/* eslint-disable */
/* Blob.js*/

/*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
  
        , origin = /^[\w-]+:\/*\[?[\w\.:-]+\]?(?::[0-9]+)?/
      ;
      FakeBlob.fake = FB_proto.fake = true;
      while (file_ex_code--) {
        FileException.prototype[file_ex_codes[file_ex_code]] = file_ex_code + 1;
      }
      // Polyfill URL
      if (!real_URL.createObjectURL) {
        URL = view.URL = function (uri) {
          var
            uri_info = document.createElementNS("http://www.w3.org/1999/xhtml", "a")
            , uri_origin
          ;
          uri_info.href = uri;
          if (!("origin" in uri_info)) {
            if (uri_info.protocol.toLowerCase() === "data:") {
              uri_info.origin = null;
            } else {
              uri_origin = uri.match(origin);
              uri_info.origin = uri_origin && uri_origin[1];
            }
          }
          return uri_info;
        };
      }
      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 = 0;
        delete this.data;
      };
      return FakeBlobBuilder;
    }(view));
  
    view.Blob = function (blobParts, options) {
      var type = options ? (options.type || "") : "";
      var builder = new BlobBuilder();
      if (blobParts) {
        for (var i = 0, len = blobParts.length; i < len; i++) {
          if (Uint8Array && blobParts[i] instanceof Uint8Array) {
            builder.append(blobParts[i].buffer);
          }
          else {
            builder.append(blobParts[i]);
          }
        }
      }
      var blob = builder.getBlob(type);
      if (!blob.slice && blob.webkitSlice) {
        blob.slice = blob.webkitSlice;
      }
      return blob;
    };
  
    var getPrototypeOf = Object.getPrototypeOf || function (object) {
      return object.__proto__;
    };
    view.Blob.prototype = getPrototypeOf(new view.Blob());
  }(
    typeof self !== "undefined" && self
    || typeof window !== "undefined" && window
    || this
  ));

Export2Excel.js

/* eslint-disable */
require('script-loader!file-saver');
// 这里别忘了改成你自己的路径
require('./public/static/js/Blob.js')
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")
}
喜欢 (0)
炮渣日记
关于作者:
发表我的评论
取消评论
表情 贴图 加粗 删除线 居中 斜体 签到

Hi,您需要填写昵称和邮箱!

  • 昵称 (必填)
  • 邮箱 (必填)
  • 网址