如何使用Aggrid导出选定的列

import { GridOptions } from 'ag-grid-community';
import { ExportModule } from 'ag-grid-enterprise';

const gridOptions: GridOptions = {
  columnDefs: columnDefs,
  rowData: rowData,
  modules: [ExportModule],
};

const exportParams = {
  allColumns: false,
  columnKeys: [], // 导出所选列的列键数组
};

function onExportSelected() {
  const selectedNodes = gridOptions.api.getSelectedNodes();
  const selectedData = selectedNodes.map(node => node.data);

  const exportParams.columnKeys = Object.keys(selectedData[0]).filter(key => selectedData.every(row => row.hasOwnProperty(key)));

  gridOptions.api.exportDataAsCsv(exportParams);
}

<button (click)="onExportSelected()">导出选定列</button>