IEnumerator LoadResourceCorotine(string resName
UnityWebRequest request=UnityWebRequest.GetAssetBundle
yield return request.SendWebRequest();
AssetBundle ab=request.downloadHandler as DownloadHandler).assetBundle;//将下载的内容作为ab包
GameObject gameobject=ab.LoadAsset<GameObject>(resName)
prefabDict.Add(resName,gameObject)
}