如何将字符串转为Uint8Array？

import { util } from '@kit.ArkTS';

/**
字符串转Uint8Array
字符串
 * @returns Uint8Array
 */
public static strToUint8Array(src: string, encoding: buffer.BufferEncoding = 'utf-8'): Uint8Array {
  let textEncoder = new util.TextEncoder(encoding);
  let result = textEncoder.encodeInto(src);
  return result;
}