angular 物料 data.table 出口到 excel

Question

我正在使用 angular 材料 data.table 以表格格式显示数据。 我需要包含一个将表格数据导出到 excel 的功能。我找不到任何可以帮助我导出数据的文档。 能不能请教一下如何导出数据到angular中的excel，使用angular素材data.table。

我尝试使用 XLSX.utils 并面临“Bad range (0): A1:A0 at check_ws”问题。

位置.component.html

<div class="example-container" #TABLE> 

  <mat-table #table [dataSource]="dataSource" matSort matSortActive="locationName" matSortDirection="asc" matSortDisableClear>
    <ng-container matColumnDef="locationName">
      <mat-header-cell *matHeaderCellDef mat-sort-header>Location Name </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.locationName}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="address">
      <mat-header-cell *matHeaderCellDef>Address </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.address}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="city">
      <mat-header-cell *matHeaderCellDef mat-sort-header> City </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.city}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="country">
      <mat-header-cell *matHeaderCellDef mat-sort-header>Country </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.country}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="zipcode">
      <mat-header-cell *matHeaderCellDef>ZipCode </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.zipcode}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="phone">
      <mat-header-cell *matHeaderCellDef>Phone </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.phone}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="timezone">
      <mat-header-cell *matHeaderCellDef> TimeZone </mat-header-cell>
      <mat-cell *matCellDef="let location"> {{location.timezone}} </mat-cell>
    </ng-container>
    <ng-container matColumnDef="action">
      <mat-header-cell *matHeaderCellDef> Action </mat-header-cell>
      <!-- <mat-cell *matCellDef="let location"> {{location.timezone}} </mat-cell> -->
      <mat-cell *matCellDef="let location">
      <a href ="#" class="btn Action-Tab" >Edit</a>&nbsp;&nbsp;
          <a href ="#" class="btn Action-Tab" >Delete</a>
        </mat-cell>
    </ng-container>
    <mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
    <mat-row *matRowDef="let row; columns: displayedColumns;">
    </mat-row>
  </mat-table>

  <mat-paginator [pageSizeOptions]="[10, 20, 50,100]"></mat-paginator>

</div>
<button mat-raised-button color="primary" (click)="ExportTOExcel()">Export as Excel</button>

位置.component.ts

import { Component, OnInit, OnDestroy , ViewChild,ElementRef} from '@angular/core';
import { ILocation } from '../../Ilocation';
import { LocationService } from '../../services/location.service';
import { DataTableResource } from 'angular5-data-table';
import { Subscription } from 'rxjs';
import {MatPaginator, MatSort, MatTableDataSource} from '@angular/material';
import {DataSource} from '@angular/cdk/table';
import * as XLSX from 'xlsx';
// import { CdkTableModule } from '@angular/cdk/table';

@Component({
  selector: 'app-location',
  templateUrl: './location.component.html',
  styleUrls: ['./location.component.css']
})
export class LocationComponent implements OnInit , OnDestroy{
  errorMessage: string;
  filterBy : string;
  locations: ILocation[];
  items : ILocation[]=[];
  itemCount :number = 0;
  subscription:Subscription;
  limits = [5, 10, 20, 80];
  tableResource : DataTableResource<ILocation>;
  displayedColumns = ['locationName', 'address', 'city', 'country','zipcode', 'phone','timezone','action'];
  // dataSource: MatTableDataSource<ILocation>;
  dataSource;
  @ViewChild(MatPaginator) paginator: MatPaginator;
  @ViewChild(MatSort) sort : MatSort;
  @ViewChild('TABLE',{ read: ElementRef }) table: ElementRef;

  constructor( private locationService: LocationService) {

   }

   applyFilter(filterValue: string) {
    filterValue = filterValue.trim(); // Remove whitespace
    filterValue = filterValue.toLowerCase(); // Datasource defaults to lowercase matches
    this.dataSource.filter = filterValue;
  }

  ngOnInit() {
    this.subscription = this.locationService.getLocations()
    .subscribe(locations =>{
       this.locations = locations;
       this.dataSource = new MatTableDataSource(locations);
       this.dataSource.sort = this.sort;
       this.dataSource.paginator = this.paginator;
       this.dataSource.table = this.table;
      },
      error => this.errorMessage = <any>error);           
  }

  ngOnDestroy(){
    this.subscription.unsubscribe();

  }

  ExportTOExcel()
  {
    console.log("export");
    this.table.nativeElement.style.background = "red";
    const ws: XLSX.WorkSheet=XLSX.utils.table_to_sheet(this.table.nativeElement);
    const wb: XLSX.WorkBook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(wb, ws, 'Sheet1');

    /* save to file */
    XLSX.writeFile(wb,'SheetJS.xlsx');
    console.log("exported");

  }

}

Answer 1

您可以使用xlsx将表格导出为 excel。
用法
执行npm i xlsx

HTML：

<div class="example-container mat-elevation-z8 " #TABLE>
  <table mat-table #table [dataSource]="dataSource">

    <!--- Note that these columns can be defined in any order.
          The actual rendered columns are set as a property on the row definition" -->

    <!-- Position Column -->
    <ng-container matColumnDef="position">
      <th mat-header-cell *matHeaderCellDef> No. </th>
      <td mat-cell *matCellDef="let element"> {{element.position}} </td>
      //..................................rest of the html
    <button mat-raised-button color="primary" (click)="exportAsExcel()">Export as Excel</button></div>

在您的组件中

import {Component,ViewChild, ElementRef} from '@angular/core';
 import * as XLSX from 'xlsx';
//......
    export class AppComponent  {
      @ViewChild('TABLE') table: ElementRef;
    exportAsExcel()
    {
      const ws: XLSX.WorkSheet=XLSX.utils.table_to_sheet(this.table.nativeElement);//converts a DOM TABLE element to a worksheet
      const wb: XLSX.WorkBook = XLSX.utils.book_new();
      XLSX.utils.book_append_sheet(wb, ws, 'Sheet1');

      /* save to file */
      XLSX.writeFile(wb, 'SheetJS.xlsx');

    }
    }

演示

Answer 2

这是一个迟到的回复，但是您可以使用mat-table-exporter ，它利用 xlsx sheetjs 并提供分页表导出为 excel、csv、json 和 txt 格式。

Answer 3

导出到 excel 很容易做到这一点：

exportExcel() {
    const workSheet = XLSX.utils.json_to_sheet(this.dataSource.data, {header:['dataprop1', 'dataprop2']});
    const workBook: XLSX.WorkBook = XLSX.utils.book_new();
    XLSX.utils.book_append_sheet(workBook, workSheet, 'SheetName');
    XLSX.writeFile(workBook, 'filename.xlsx');
}

从按钮调用它：

<button (click)="exportExcel()">Export</button>

Answer 4

如果您使用<mat-table> 、 <mat-header-cell> 、 <mat-cell>渲染材质弹性表。 XLSX.utils.table_to_book to table 不起作用。

您可以查看完整的指南和工作示例：

指南： https ://trungk18.com/experience/angular-material-data-table-export-to-excel-file/

Stackblitz： https ://stackblitz.com/edit/angular-material-table-export-excel-xlsx

<mat-table [dataSource]="dataSource" class="mat-elevation-z8">
  <ng-container matColumnDef="name">
    <mat-header-cell *matHeaderCellDef> Name </mat-header-cell>
    <mat-cell *matCellDef="let element"> {{element.name}} </mat-cell>
  </ng-container>

  <ng-container matColumnDef="symbol">
    <mat-header-cell *matHeaderCellDef> Symbol </mat-header-cell>
    <mat-cell *matCellDef="let element"> {{element.symbol}} </mat-cell>
  </ng-container>

  <mat-header-row *matHeaderRowDef="matColumns"></mat-header-row>
  <mat-row *matRowDef="let row; columns: matColumns;"></mat-row>
</mat-table>

您必须使用XLSX.utils.json_to_sheet将数组导出到 xlsx。 这对您来说将更加灵活和容易。

exportArrayToExcel(arr: any[], name?: string) {
    let { sheetName, fileName } = getFileName(name);
    var wb = XLSX.utils.book_new();
    var ws = XLSX.utils.json_to_sheet(arr);
    XLSX.utils.book_append_sheet(wb, ws, sheetName);
    XLSX.writeFile(wb, `${fileName}.xlsx`);
}

Answer 5

我遇到了同样的问题，我找到了这个对我有用的解决方案......

(#1) 注意 div 表包装器，它必须包含#TABLE

<div #TABLE> 
    <table mat-table>
       <!-- Your table code goes here -->
    </table>
</div>

(#2) 现在，在关闭</table>或</mat-table>之前，进行这些更改...

<mat-header-row></mat-header-row> ==> <tr mat-header-row>...</tr>

<mat-row></mat-row> ==> <tr mat-row></tr>

此时，如果您丢失了表格的某些 CSS 样式，请使用以下代码修复样式...

tr.mat-header-row, tr.mat-row {
    display: flex;
}

希望这可以帮到你。

Answer 6

就我而言， table_to_sheet的替代方法是使用json_to_sheet 。 由于我不知道如何正确导出表（带分页）和过滤表，我利用json_to_sheet和dataSource而不是dataSource.data ，我使用dataSource.filteredData 。

因此，它涵盖了ff：

• 分页导出表格
• 带过滤器的导出表

  exportToExcel() {
    let dataToExport = this.dataSource.filteredData
      .map(x => ({
        DisplayName: x.DisplayName,
        Name: x.Name,
        Type: x.Type == '0' ? 'Partial' : 'Full'
      }));

    let workSheet: XLSX.WorkSheet = XLSX.utils.json_to_sheet(dataToExport, <XLSX.Table2SheetOpts>{ sheet: 'Sheet 1' });
    let workBook: XLSX.WorkBook = XLSX.utils.book_new();

    // Adjust column width
    var wscols = [
      { wch: 50 },
      { wch: 50 },
      { wch: 30 }
    ];

    workSheet["!cols"] = wscols;

    XLSX.utils.book_append_sheet(workBook, workSheet, 'Sheet 1');
    XLSX.writeFile(workBook, `${this.exportToExcelFileName}.xlsx`);
  }

Answer 7

按顺序执行以下步骤：

1. 首先将您的 ID 放入 HTML 表格标记中。
2. 然后将Excel服务注入到构造函数中，编写Excel函数。
3. 然后编写 Excel 服务。

HTML：

 <table id="ExampleTable">
  .
  .
  .
</table>

组件.TS：

 constructor(private excel: ExcelService) {}

和

exportExcel(): void {
  this.excel.exportExcel('ExampleTable');
}

Excel服务：

public exportExcel(tableId: string, name?: string): void {
  const timeSpan = new Date().toISOString();
  const prefix = name || 'ExportResult';
  const fileName = `${prefix}-${timeSpan}`;
  const targetTableElm = document.getElementById(tableId);
  const wb = XLSX.utils.table_to_book(targetTableElm, { sheet: prefix } as 
  XLSX.Table2SheetOpts);
  XLSX.writeFile(wb, `${fileName}.xlsx`);
}

Answer 8

您可以使用此视频参考转换数据

https://youtu.be/9Acf1-X9mzg

Answer 9

  exportTable() {
if (this.arrayname.length >= 1) { //here your array name which are display in table
    $('#exportable tr td').css('text-align', 'center'); //table formating
    const downloadLink = document.createElement('a');
    const table = document.getElementById('exportable');
    const tableHTML = table.outerHTML.replace(/ /g, '%20');
    var html = table.outerHTML;
    var url = 'data:application/vnd.ms-excel,' + escape(html); // Set your html table into url 
    downloadLink.href = 'data:' + url + ' ';
    downloadLink.download = 'tablename.xls'
    downloadLink.click();
} else {
    alert('table is empty')
}

Answer 10

您需要在 HTML 文件中进行更改。 代替 ：

<mat-header-row *matHeaderRowDef="displayedColumns"></mat-header-row>
<mat-row *matRowDef="let row; columns: displayedColumns;">

喜欢做，

<tr mat-header-row *matHeaderRowDef="displayedColumns"></tr> <tr mat-row *matRowDef="let row; columns: displayedColumns;"></tr>