arrows-h.svg arrows-v.svg

/* 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('./Blob.js');//转二进制用  这边要写你的blob的实际地址
require('script-loader!xlsx/dist/xlsx.core.min');
import XLSX from 'xlsx-style'
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 ({
  title,//标题
  multiHeader = [],
  header,//表头 格式:[[],[]]多级菜单，从下往上
  data,//格式后的数据
  filename,//表名
  merges = [],//需要合并的单元格 格式:[[],[]]
  autoWidth = true,
  bookType = 'xlsx'
} = {}) {
  /* original data */
  //判断是否有表名、没有则赋予固定表名
  filename = filename || 'excel-list'
  //获取所有数据
  data = [...data]
  //添加表头进数据最上层
  console.log("data-------->",data);
  header.forEach(element => {
    console.log(element);
    data.unshift(element);
  });
  //添加标题进数据最上层  在表头之上
  // data.unshift(title);
  console.log("将标题加入到表格中",data);
  //判断multiHeader是否有值(原作为标题后修改的值)
  for (let i = multiHeader.length - 1; i > -1; i--) {
    data.unshift(multiHeader[i])
  }

  var ws_name = "SheetJS";
  var wb = new Workbook(),
    //将data转化格式 用于接下来动态宽度
    ws = sheet_from_array_of_arrays(data);

  //合并单元格
  if (merges.length > 0) {
    if (!ws['!merges']) ws['!merges'] = [];
    merges.forEach(a => {
      a.forEach(item => {
        ws['!merges'].push(XLSX.utils.decode_range(item))
      })
    })
  }
  //动态设置宽度
  if (autoWidth) {
    console.log("data========",data);
    /*设置worksheet每列的最大宽度*/
    const colWidth = data.map((row,rowIndex) => row.map((val,colIndex) => {
      /*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 * 3
        };
      } else {
        return {
          'wch': val.toString().length*3
        };
      }
    }))
    //判断合并单元格中是否有同行合并，有则将其长度设为0
    if (merges.length > 0) {
      if (!ws['!merges']) ws['!merges'] = [];
      merges.forEach(a => {
        a.forEach(item => {
          let q = item.split(':')
          let w1 = q[0].substring(0, 1)
          let e1 = q[0].substring(1, 2)
          let w2 = q[1].substring(0, 1)
          let e2 = q[1].substring(1, 2)
          if (e1 == e2) {
            let abc = {
              "A": 0, "B": 1, "C": 2, "D": 3, "E": 4, "F": 5, "G": 6, "H": 7, "I": 8, "J": 9,
              "K": 10, "L": 11, "M": 12, "N": 13, "O": 14, "P": 15, "Q": 16, "R": 17, "S": 18, "T": 19, "U": 20,
              "V": 21, "W": 22, "X": 23, "Y": 24, "Z": 25,'AA':26,'AB':27,'AC':28,'AD':29,'AE':30
            };
            if (abc[w1] > abc[w2]) {
              let jh = w1
              w1 = w2
              w2 = jh
            }
            for (let i = abc[w1]; i <= abc[w2]; i++) {
              colWidth[e1 - 1][i]['wch'] = 0;
            }
          }
        })
      })
    }
    /*以第一行为初始值 判断对应每一列的最大长度*/
    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 dataInfo = wb.Sheets[wb.SheetNames[0]];

  const borderAll = {  //单元格外侧框线
    top: {
      style: 'thin',
      color: {rgb: 'DC143C'}
    },
    bottom: {
      style: 'thin',
      color: {rgb: 'DC143C'}
    },
    left: {
      style: 'thin',
      color: {rgb: 'DC143C'}
    },
    right: {
      style: 'thin',
      color: {rgb: 'DC143C'}
    }
  };
  // console.log(dataInfo);
  //给所以单元格加上边框
  // for (var i in dataInfo) {
  //   if (i == '!ref' || i == '!merges' || i == '!cols' || i == 'A1') {

  //   } else {

  //     dataInfo[i + ''].s = {
  //       border:borderAll,
  //       //居中属性
  //       alignment: {
  //         horizontal: "center",
  //         vertical: "center"
  //       },
  //     }
  //   }
  // }

  // 去掉标题边框
  // let arr = ["A1", "B1", "C1", "D1", "E1", "F1", "G1", "H1", "I1", "J1", "K1", "L1", "M1", "N1", "O1", "P1", "Q1", "R1", "S1", "T1", "U1", "V1", "W1", "X1", "Y1", "Z1"];
  // arr.some(function (v) {
  //   // let a = merges[0].split(':')
  //   let a = merges[0][0].split(':')
  //   if (v == a[1]) {
  //     dataInfo[v].s = {}
  //     return true;
  //   } else {
  //     dataInfo[v].s = {}
  //   }
  // })
// debugger;
  //设置主标题样式
  // dataInfo["A1"].s = {
  //   font: {
  //     name: '宋体',
  //     sz: 18,
  //     color: { rgb: "CCFF00" },
  //     bold: true,
  //     italic: false,
  //     underline: false
  //   },
  //   alignment: {
  //     horizontal: "center",
  //     vertical: "center"
  //   },
  //   fill: {
  //     fgColor: {rgb: "99CCFF"},
  //   },
  // };

  // console.log(merges)
  // console.log(dataInfo)
  var tableTitleFont = {
    font: {
      name: '宋体',
      sz: 12,
      color: {rgb: "000000"},
      bold: true,
      italic: false,
      underline: false
    },
    alignment: {
      horizontal: "center",
      vertical: "center"
    },
    // border:borderAll,
    // fill: {
    //   fgColor: {rgb: "f5f8ff"},
    // },
  };
  //为某一列设置样式
  data.map((row,rowIndex) => {
    let index = rowIndex+1;

    if(index >4){
      dataInfo["B"+index].s = {
        font: {
          name: '宋体',
          color: { rgb: "40E0D0" },
          bold: true,
          italic: false,
          underline: false
        },
        alignment: {
          horizontal: "center",
          vertical: "center"
        },
      }

    }else{
     //设置某一行的样式
      for (var b in dataInfo) {
        if(b.indexOf(index)!==-1){
          // console.log("b======",b);
          dataInfo[b].s = tableTitleFont;
        }
      }
    }
  })
  var wbout = XLSX.write(wb, {
    bookType: bookType,
    bookSST: false,
    type: 'binary'
  });
  saveAs(new Blob([s2ab(wbout)], {
    type: "application/octet-stream"
  }), `${filename}.${bookType}`);
};

封装导出

/**
 * 示例数据
 * 
 * 
 */

let all = []
let maxDeep = 0;
function exportToExcelConfig(theader,num,parentName){
  dealArr(theader,num,parentName);
  dealArr2();
  return outputResult().reverse();
}
//按层级生成一个二维数组
function dealArr(children,num,parentName){
  if(!all[num]){
    all[num]=[]
  }
  for(let i=0;i<children.length;i++){
    let item = children[i];
    item.parentName = parentName;
    all[num].push(item);
    if(item.children && item.children.length){
      num++;
      //如果小于最大深度，
      if(maxDeep<num){
        maxDeep = num;
      }
      //将之前的数据作为我的根基
      // console.log("num-1的数据",all[num-1]);
      dealArr(item.children,num,item.title);
      num--;
    }
  }
}

/**
 * 遍历生成的二维数组
 * 1. 如果是第一个元素，表示是第一层，它只需要将chilren生成对应多个null就可以了
 * 2. 第二个 元素表示第二层，遍历第一个层数，
 */
function dealArr2(){
  for(let i=1;i<all.length;i++){ 
    let item = all[i];
    //从第二层开始
    let children = all[i];
    //上一层元素
    let preChildren = all[i-1];
    //遍历上一层的所有元素
    for(let j=0;j<preChildren.length;j++){
      let preItem = preChildren[j];
      //将当前层的第一个元素的parentName和preItem的title比较
      //如果相等，那么截取preChilren从0开始，到preItem对应的下标的内容
      //从当前层的数组前插入截取出来的部分内容
      if(item[0].parentName === preItem.title){
        let preSlice = preChildren.slice(0,j);
        // console.log("截取的部分内容",[...preSlice,...all[i]]);
        all[i] = [...preSlice,...all[i]]
        //如果当前层之后还有其他非chilren的数据，则应该将这些数据也拼接到all[i]中
        //遍历后半部分
        let lastSlice = preChildren.slice(j+1);
        for(let k=0;k<lastSlice.length;k++){
          let ktem = lastSlice[k];
          if(!ktem.children){
            //找到ktem要插入的位置，等于 preSlice.length+preItem.children.length+1;
            let index = preSlice.length+preItem.children.length;
            //判断index是否小于数组的长度，如果小于，则表示要插入到数组中，使用splice，否则直接push即可 
            if(index<all[i].length-lastSlice.length){
              all[i].splice(index,0,ktem) 
            }else{
              all[i].push(ktem);
            }
          }
        }
      }
    }
  }
}

//生成结果
function outputResult(){
  let result = [];
  for(let i=0;i<all.length;i++){
    let children = all[i];
    if(!result[i]){
      result[i] = []
    }
    for(let k=0;k<children.length;k++){
      let item = children[k];
      if(item.children && item.children.length){
          let tArr = [];
          getNull(item.children,tArr);
          tArr.pop();
          tArr.unshift(item.title);
          result[i]= [...result[i],...tArr]
      }else{
        result[i].push(item.title);
      }
    }
  }
  return result;
}

// 对应chilren下的元素设置为null
function getNull(children,arr){
  let hasChildren = false;
  for(let i=0;i<children.length;i++){
    let item = children[i];
    if(item.children&&item.children.length){
      getNull(item.children,arr);
    }else{
      arr.push(null);
    }
  }
}
let columns = ['A','B','C','D','E','F','G','H','I','J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z'];

let mergRules = [];
let maxRuleDeep = 0; //数据的层级，和上面的maxDeep一样


function createColMerges(children,num,level){
  if(maxRuleDeep<level){
    maxRuleDeep = level;
  }
  for(let i=0;i<children.length;i++){
    let item = children[i];
    item.merges = columns[num]
    item.column = columns[num]+''+level
    item.columnName = columns[num];
    ++num;
    if(item.children && item.children.length){
      //获取chilren的长度
     num = createColMerges(item.children,num-1,++level)
      //后去children
      let lastItem = item.children[item.children.length-1];
      level--;
      //如果它没有下一层children，就只需要合并。 
      if(!lastItem.children){
        item.merges = `${item.merges}${level}:${lastItem.merges}${level}`
        mergRules.push(item.merges);
      }else{
        let lastChildItem = lastItem.children[lastItem.children.length-1];
        item.merges = `${item.merges}${level}:${lastChildItem.merges}${level}`
        mergRules.push(item.merges);
      }

    }
  }
  return num;
}

//获取行合并的数据,需要先取到最深层级
function createRowMerges(children,level){
  for(let i=0;i<children.length;i++){
    let item = children[i];
    if(item.children && item.children.length){
      createRowMerges(item.children,level);
    }else{
      if(item.column!==(item.columnName+level)){
        let merge = item.column+":"+(item.columnName+level);
        mergRules.push(merge);
      }
    }
  }
}


// 生成merges，表格合并的规则
function createMergeRules(theader){
  createColMerges(theader,0,1);
  createRowMerges(theader,maxRuleDeep);
  return mergRules;
}

function createTitles(length){
  return Array.from(new Array(length)).map(()=>'')
}


export default {
  /**
   * 
   */
  exportToExcelConfig(headerData=[],){
    let result = exportToExcelConfig(headerData,0);
    let titles = createTitles(result[0].length);
    return {
      header: result,
      merges: createMergeRules(headerData),
      title: titles
    }
  }
}