YooAsset/Assets/YooAsset/Runtime/DownloadSystem/UnityWebFileRequester.cs

using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.Networking;
using UnityEngine;

namespace YooAsset
{
	internal class UnityWebFileRequester : UnityWebRequesterBase
	{
		/// <summary>
		/// 发送GET请求
		/// </summary>
		public void SendRequest(string url, string fileSavePath, int timeout = 60)
		{
			if (_webRequest == null)
			{
				URL = url;
				ResetTimeout(timeout);

				_webRequest = DownloadSystem.NewRequest(URL);
				DownloadHandlerFile handler = new DownloadHandlerFile(fileSavePath);
				handler.removeFileOnAbort = true;
				_webRequest.downloadHandler = handler;
				_webRequest.disposeDownloadHandlerOnDispose = true;
				_operationHandle = _webRequest.SendWebRequest();
			}
		}	
	}
}