Unity3D 更新远程文件下载器

http://www.cnblogs.com/mrblue/p/5571158.html 

使用说明：

 

1）远端更新服务器目录

Package

　　|----list.txt

　　|----a.bundle

　　|----b.bundle

 

2）list.txt是更新列表文件

格式是

a.bundle|res/a.bundle

b.bundle|res/b.bundle

(a.bundle是要拼的url，res/a.bundle是要被写在cache的路径)

 

3）使用代码

var downloader = gameObject.GetComponent<PatchFileDownloader>();        if (null == downloader)        {            downloader = gameObject.AddComponent<PatchFileDownloader>();        }        downloader.OnDownLoading = (n, c, file, url) =>        {            Debug.Log(url);        };        downloader.OnDownLoadOver =(ret)=>{            Debug.Log("OnDownLoadOver  "+ret.ToString());        };        downloader.Download("http://192.168.1.103:3080/Package/", "list.txt");

 

//更新文件下载器

using System;using UnityEngine;using System.Collections;using System.IO;using System.Collections.Generic;//更新文件下载器public class PatchFileDownloader : MonoBehaviour {    //每个更新文件的描述信息    protected class PatchFileInfo    {        // str 的格式是 url.txt|dir/a.txt        url.txt是要拼的url，dir/a.txt是要被写在cache的路径        public PatchFileInfo(string str)        {            Parse(str);        }        //解析        protected virtual void Parse(string str)        {            var val = str.Split('|');            if (1 == val.Length)            {                PartialUrl = val[0];                RelativePath = val[0];            }            else if (2 == val.Length)            {                PartialUrl = val[0];                RelativePath = val[1];            }            else            {                Debug.Log("PatchFileInfo parse error");            }        }        //要被拼接的URL        public string PartialUrl { get; private set; }        //文件相对目录        public string RelativePath { get; private set; }    }    public delegate void DelegateLoading(int idx, int total, string bundleName, string path);    public delegate void DelegateLoadOver(bool success);    //正在下载中回掉    public DelegateLoading OnDownLoading;    //下载完成回掉    public DelegateLoadOver OnDownLoadOver;    //总共要下载的bundle个数    private int mTotalBundleCount = 0;    //当前已下载的bundle个数    private int mBundleCount = 0;    //开始下载    public void Download(string url,string dir)    {        mBundleCount = 0;        mTotalBundleCount = 0;        StartCoroutine(CoDownLoad(url, dir));    }    //下载Coroutine    private IEnumerator CoDownLoad(string url, string dir)    {        //先拼接URL        string fullUrl = Path.Combine(url, dir);        //获得要更新的文件列表        List<string> list = new List<string>();        //先下载列表文件        using (WWW www = new WWW(fullUrl))        {            yield return www;            if (www.error != null)            {                //下载失败                if (null != OnDownLoadOver)                {                    try                    {                        OnDownLoadOver(false);                    }                    catch (Exception e)                    {                        Debug.LogError(e.Message);                    }                }                Debugger.LogError(string.Format("Read {0} failed: {1}", fullUrl, www.error));                yield break;            }            //读取字节            ByteReader reader = new ByteReader(www.bytes);            //读取每一行            while (reader.canRead)            {                list.Add(reader.ReadLine());            }            if (null != www.assetBundle)            {                www.assetBundle.Unload(true);                }                        www.Dispose();        }        //收集所有需要下载的        var fileList = new List<PatchFileInfo>();        for (int i = 0; i < list.Count; i++)        {            var info = new PatchFileInfo(list[i]);            if (!CheckNeedDownload(info))            {                continue;            }                        fileList.Add(info);        }        mTotalBundleCount = fileList.Count;        //开始下载所有文件        for (int i = 0; i < fileList.Count; i++)        {            var info = fileList[i];            var fileUrl = Path.Combine(url, info.PartialUrl);            StartCoroutine(CoDownloadAndWriteFile(fileUrl, info.RelativePath));        }        //检查是否下载完毕        StartCoroutine(CheckLoadFinish());    }    //检查是否该下载    protected virtual bool CheckNeedDownload(PatchFileInfo info)    {                return true;    }    //下载并写入文件    private IEnumerator CoDownloadAndWriteFile(string url,string filePath)    {        var fileName = Path.GetFileName(filePath);        using (WWW www = new WWW(url))        {            yield return www;            if (www.error != null)            {                Debugger.LogError(string.Format("Read {0} failed: {1}", url, www.error));                yield break;            }            var writePath = CreateDirectoryRecursive(filePath) + "/" + fileName;            FileStream fs1 = File.Open(writePath, FileMode.OpenOrCreate);            fs1.Write(www.bytes, 0, www.bytesDownloaded);            fs1.Close();            //Debug.Log("download  " + writePath);            if (null != www.assetBundle)            {                www.assetBundle.Unload(true);            }            www.Dispose();            mBundleCount++;            if (null != OnDownLoading)            {                try                {                    OnDownLoading(mBundleCount, mTotalBundleCount, writePath, url);                }                catch (Exception e)                {                    Debug.LogError(e.Message);                    }            }        }    }    //递归创建文件夹    public static string CreateDirectoryRecursive(string relativePath)    {        var list = relativePath.Split('/');        var temp = Application.temporaryCachePath;        for (int i=0;i<list.Length-1;i++)        {            var dir = list[i];            if (string.IsNullOrEmpty(dir))            {                continue;            }            temp += "/" + dir;            if (!Directory.Exists(temp))            {                Directory.CreateDirectory(temp);            }        }        return temp;    }    //清空某个目录    public static void CleanDirectory(string relativePath)    {                var fallPath = Path.Combine(Application.temporaryCachePath, relativePath);        if (string.IsNullOrEmpty(relativePath))        {            Caching.CleanCache();            return;        }        var dirs = Directory.GetDirectories(fallPath);        var files = Directory.GetFiles(fallPath);        foreach (var file in files)        {            File.Delete(file);        }        foreach (var dir in dirs)        {            Directory.Delete(dir, true);        }        Debug.Log("CleaDirectory " + fallPath);    }    //检查是否已经下载完毕    IEnumerator CheckLoadFinish()    {        while (mBundleCount < mTotalBundleCount)        {            yield return null;        }        if (null != OnDownLoadOver)        {            try            {                OnDownLoadOver(true);            }            catch (Exception e)            {                Debug.LogError(e.Message);            }        }    }}