vue导出excel数据表格功能

Posted 2022-05-26 reeber

前端工作量最多的就是需求，需求就是一直在变，比如当前端数据写完之后，需要用Excel把数据下载出来。

第一步安装依赖包,需要把代码下载你的项目当中

　　cnpm install  file-saver

　　cnpm install xlsx

       cnpm install script-loader

第二步在项目中创建一个新的文件夹用于存放Blob和Export2Excel两个js文件

第三步在你那个组件中使用

tHeader:标题

filterVal：字段名

tableData:前端请求的数据

exportToExcel() 
        //excel数据导出
        require.ensure([], () => 
            const 
                export_json_to_excel
             = require(‘../../assets/js/Export2Excel‘);
            const tHeader = [‘序号‘,‘省份‘, ‘投资总额‘, ‘收益总额‘, ‘主要投资项目‘,‘投资周期‘, ‘投资人数‘, ‘投资年变化率‘,‘备注‘];
            const filterVal = [‘index‘,‘provinces‘, ‘orderMoney‘, ‘incomeMoney‘, ‘payType‘,‘orderPeriod‘, ‘orderPersonConunt‘, ‘orderYearRate‘, ‘remarks‘];
            const list = this.tableData;
            const data = this.formatJson(filterVal, list);
            export_json_to_excel(tHeader, data, ‘列表excel‘);
        )
    ,
    formatJson(filterVal, jsonData) 
        return jsonData.map(v => filterVal.map(j => v[j]))
    

 

 

附录：

需要把这个两个文件复制到自己的目录中

Export2Excel.js文件

/* eslint-disable */
require(‘script-loader!file-saver‘);
// require(‘script-loader!src/vendor/Blob‘);
require(‘script-loader!../../assets/js/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")

Blob.js文件

/* 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
));