角12中的mat-table没有出现mat-paginator

import { MatTableModule } from '@angular/material/table';
import { MatPaginatorModule } from '@angular/material/paginator';

@NgModule({
  imports: [
    MatTableModule,
    MatPaginatorModule
  ],
  ...
})
export class AppModule { }

<mat-table [dataSource]="dataSource">
  <!-- 表格列定义 -->
  <ng-container matColumnDef="column1">
    <mat-header-cell *matHeaderCellDef> Column 1 </mat-header-cell>
    <mat-cell *matCellDef="let element"> {{element.column1}} </mat-cell>
  </ng-container>

  <!-- 其他列定义 -->

  <!-- 表格数据行 -->
  <mat-row *matRowDef="let row; columns: displayedColumns;"></mat-row>
</mat-table>

<mat-paginator [pageSizeOptions]="[5, 10, 25]" showFirstLastButtons></mat-paginator>

import { MatPaginator, MatTableDataSource } from '@angular/material';

@Component({
  ...
})
export class YourComponent implements OnInit {
  dataSource: MatTableDataSource<any>;
  @ViewChild(MatPaginator) paginator: MatPaginator;

  ngOnInit() {
    // 初始化数据源
    this.dataSource = new MatTableDataSource(yourDataArray);
    // 设置分页器
    this.dataSource.paginator = this.paginator;
  }
}