從服務(wù)器加載資源：

AB資源打包后有一個【目錄文件】AssetBundle，他保存了所有AB資源的路徑與名稱，

通過aLLAssetBundleURL鏈接路徑 組拼 從【目錄文件】獲得的AB資源的名字，然后再協(xié)程方法內(nèi)編寫相關(guān)代碼，從而實現(xiàn)從服務(wù)器加載資源的功能。詳細見代碼。文章來源地址http://www.zghlxwxcb.cn/news/detail-540417.html

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

public class DownLoadAssetBundle : MonoBehaviour
{
    //AB資源文件保存在服務(wù)器中的位置(我的服務(wù)器寄了，加載不到了)
    private string mainAssetBundleURL = @"http://120.24.90.173/Luademo/AssetBundles/AssetBundles";
    private string aLLAssetBundleURL = @"http://120.24.90.173/Luademo/AssetBundles/";
    
    void Start()
    {
        StartCoroutine("DownLoadMainAssetBundle");
    }

    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space))
        {
            LoadAssetBundle();
        }
    }
    
    /// <summary>
    /// 下載主[目錄]AssetBundle文件
    /// </summary>
    IEnumerator DownLoadMainAssetBundle()
    {
        //創(chuàng)建一個獲取 AssetBundle 文件的 web 請求.
        UnityWebRequest request = UnityWebRequestAssetBundle.GetAssetBundle(mainAssetBundleURL);

        //發(fā)送這個 web 請求.
        yield return request.SendWebRequest();

        //從 web 請求中獲取內(nèi)容，會返回一個 AssetBundle 類型的數(shù)據(jù).
        AssetBundle ab = DownloadHandlerAssetBundle.GetContent(request);

        if (ab == null)
        {
            Debug.Log("not ab");
        }

        //從這個“目錄文件 AssetBundle”中獲取 manifest 數(shù)據(jù).
        AssetBundleManifest manifest = ab.LoadAsset<AssetBundleManifest>("AssetBundleManifest");

        //獲取這個 manifest 文件中所有的 AssetBundle 的名稱信息.
        string[] names = manifest.GetAllAssetBundles();
        for (int i = 0; i < names.Length; i++)
        {
            //組拼出下載的路徑鏈接.
            Debug.Log(aLLAssetBundleURL + names[i]);

            //下載單個AssetBundle文件加載到場景中.
            //StartCoroutine(DownLoadSingleAssetBundle(aLLAssetBundleURL + names[i]));
            
            //下載AssetBundle并保存到本地.
            StartCoroutine(DownLoadAssetBundleAndSave(aLLAssetBundleURL + names[i]));
        }

    }

    /// <summary>
    /// 下載單個AssetBundle文件加載到場景中
    /// </summary>
    IEnumerator DownLoadSingleAssetBundle(string url)
    {
        UnityWebRequest request = UnityWebRequestAssetBundle.GetAssetBundle(url);
        yield return request.SendWebRequest();
        AssetBundle ab = DownloadHandlerAssetBundle.GetContent(request);

        //通過獲取到的 AssetBundle 對象獲取內(nèi)部所有的資源的名稱(路徑)，返回一個數(shù)組.
        string[] names = ab.GetAllAssetNames();
        for (int i = 0; i < names.Length; i++)
        {
            //Debug.Log(names[i]);

            //截取路徑地址中的文件名，且無后綴名. 需要引入 System.IO 命名空間.
            string tempName = Path.GetFileNameWithoutExtension(names[i]);
            Debug.Log(tempName);

            //實例化.
            GameObject obj = ab.LoadAsset<GameObject>(tempName);
            GameObject.Instantiate<GameObject>(obj);
        }
    }

    /// <summary>
    /// 下載AssetBundle并保存到本地
    /// </summary>
    IEnumerator DownLoadAssetBundleAndSave(string url)
    {
        //UnityWebRequestAssetBundle.GetAssetBundle(string uri)使用這個API下載回來的資源它是不支持原始數(shù)據(jù)訪問的.
        UnityWebRequest request = UnityWebRequest.Get(url);
        yield return request.SendWebRequest();

        //表示下載狀態(tài)是否完畢.
        if (request.isDone)
        {
            //使用 IO 技術(shù)把這個 request 對象存儲到本地.(需要后綴)
            //SaveAssetBundle(Path.GetFileName(url), request.downloadHandler.data, request.downloadHandler.data.Length);
            SaveAssetBundle2(Path.GetFileName(url), request);
        }
    }

    /// <summary>
    /// 方法1
    /// 存儲AssetBundle為本地文件
    /// </summary>
    private void SaveAssetBundle(string fileName, byte[] bytes, int count)
    {
        //創(chuàng)建一個文件信息對象.
        FileInfo fileInfo = new FileInfo(Application.streamingAssetsPath + "http://" + fileName);

        //通過文件信息對象的“創(chuàng)建”方法，得到一個文件流對象.
        FileStream fs = fileInfo.Create();

        //通過文件流對象，往這個文件內(nèi)寫入信息.
        //fs.Write(字節(jié)數(shù)組, 開始位置, 數(shù)據(jù)長度);
        fs.Write(bytes, 0, count);

        //文件寫入存儲到硬盤，關(guān)閉文件流對象，銷毀文件對象.
        fs.Flush();
        fs.Close();
        fs.Dispose();

        Debug.Log(fileName + "下載完畢");
    }

    /// <summary>
    /// 方法2
    /// 存儲AssetBundle為本地文件
    /// </summary>
    private void SaveAssetBundle2(string fileName, UnityWebRequest request)
    {
        //構(gòu)造文件流.
        FileStream fs = File.Create(Application.streamingAssetsPath + "http://" + fileName);

        //將字節(jié)流寫入文件里,request.downloadHandler.data可以獲取到下載資源的字節(jié)流.
        fs.Write(request.downloadHandler.data, 0, request.downloadHandler.data.Length);

        //文件寫入存儲到硬盤，關(guān)閉文件流對象，銷毀文件對象.
        fs.Flush();
        fs.Close();
        fs.Dispose();

        Debug.Log(fileName + "下載完畢");
    }

    /// <summary>
    /// 從本地加載 AB 資源并實例化
    /// </summary>
    private void LoadAssetBundle()
    {
        //從本地加載 AB 資源到內(nèi)存.
        AssetBundle assetBundle = AssetBundle.LoadFromFile(Application.streamingAssetsPath + "/player1.ab");

        //從 AB 資源中獲取資源.
        GameObject player = assetBundle.LoadAsset<GameObject>("Necromancer");

        GameObject.Instantiate<GameObject>(player, Vector3.zero, Quaternion.identity);
    }
}

到了這里，關(guān)于Unity 從服務(wù)器加載AssetBundle資源寫入本地內(nèi)存，并將下載保存的AB資源從本地內(nèi)存加載至場景的文章就介紹完了。如果您還想了解更多內(nèi)容，請在右上角搜索TOY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！