string path = @"AssetBundles/scene/cubewall.ab";
string cacheDownloadPath = @"file://D:\UnityWorkSpace\FifthMonthWork_Groups\AssetBundle_Demo\AssetBundles\scene\cubewall.ab";
string tempWebAddress = @"http://localhost/AssetBundles/scene/wall.ab";

//第一种加载AB的方式，异步进行加载从二进制文件中
IEnumerator LoadAB()
{
　　AssetBundleCreateRequest request = AssetBundle.LoadFromMemoryAsync(File.ReadAllBytes(path));
　　yield return request;
　　AssetBundle ab = request.assetBundle;
　　GameObject wallPrefab = ab.LoadAsset("CubeWall");
　　Instantiate(wallPrefab);
}

//第二种进行资源加载，同步加载
　　Instantiate(AssetBundle.LoadFromMemory(File.ReadAllBytes(path)).LoadAsset("CubeWall"));

//第三种加载AB的方式，LoadFromFile【从文件进行加载】
　　AssetBundle ab = AssetBundle.LoadFromFile("AssetBundles/scene/wall.ab");
　　GameObject wallPrefab = ab.LoadAsset("Wall");
　　Instantiate(wallPrefab);

//第四种加载AB的方式，LoadFromFileAsync【从文件进行异步加载】
IEnumerator LoadFileAsync()
{
　　AssetBundleCreateRequest request = AssetBundle.LoadFromFileAsync(path);
　　yield return request;

　　AssetBundle ab = request.assetBundle;
　　Instantiate(ab.LoadAsset("CubeWall"));
}

//第五种加载AB的方式，WWW.LoadFromCacheOrDownload - 从缓存中加载和下载

IEnumerator LoadCacheOrDownloadFromFile(string path)
{
　　while (Caching.ready == false)
　　yield return null;

　　WWW www = WWW.LoadFromCacheOrDownload(path, 1);
　　yield return www;

　　if( !string.IsNullOrEmpty(www.error) )
　　{
　　　　Debug.Log(www.error);
　　　　yield break;
　　}
　　AssetBundle ab = www.assetBundle;
　　GameObject wallPrefab = ab.LoadAsset("CubeWall");
　　Instantiate(wallPrefab);
}

//第六种加载AB的方式，UnityWebRequest，网页请求进行加载【第一种方法】
IEnumerator UseUnityWebRequest(string path)
{
//1、使用UnityWebRequest.GetAssetBundle(路径)【服务器 / 本地都可以】 去获取到网页请求
　　UnityWebRequest request = UnityWebRequest.GetAssetBundle(path);
//2、等待这个请求进行发送完
　　yield return request.SendWebRequest();
//3、发送完请求之后，就要从DownloadHandlerAssetBundle进行获取一个request，得到出来的是一个AssetBundle类对象
　　AssetBundle ab = DownloadHandlerAssetBundle.GetContent(request);
//4、用获取到的AssetBundle对象去加载资源泛型是GameObject
　　GameObject obj = ab.LoadAsset("Wall");
//5、实例化出这个GameObject对象
　　Instantiate(obj);
}

//第六种加载AB的方式，UnityWebRequest，网页请求进行加载【第二种方法】
IEnumerator UseUnityWebRequest2(string path)
{
　　UnityWebRequest request = UnityWebRequest.GetAssetBundle(path);

　　yield return request.SendWebRequest();

　　AssetBundle ab = (request.downloadHandler as DownloadHandlerAssetBundle).assetBundle;

　　GameObject obj = ab.LoadAsset("Wall");

　　Instantiate(obj);
}

读取Manifest文件，获取它们的依赖关系并且加载出来

AssetBundle manifestAB = AssetBundle.LoadFromFile("AssetBundles/AssetBundles");
AssetBundleManifest manifest = manifestAB.LoadAsset("AssetBundleManifest");
string[] strArr = manifest.GetAllDependencies("scene/cubewall.ab");
foreach (var item in strArr)
{
　　AssetBundle.LoadFromFile("AssetBundles/" + item);
}

【待继续往后写】