public static void SyncDownloadFile(string url, string savePath)
{
C_DebugHelper.Log("SyncDownloadFile 下载开始 url = " + url + ", savePath = " + savePath);
using (UnityWebRequest request = UnityWebRequest.Get(url))
{
request.SendWebRequest();
while (!request.isDone)
{
if (request.isHttpError || request.isNetworkError)
{
C_DebugHelper.LogWarning("request.isError" + request.isNetworkError);
return;
}
}
if (request.isHttpError || request.isNetworkError)
{
C_DebugHelper.LogWarning("request.isError" + request.isNetworkError);
}
else
{
C_DownloadMgr.CreatFile(url, savePath, request.downloadHandler.data);
}
}
}
private IEnumerator Execute(string url, string savePath, Action <byte[]> callback)
{
C_DebugHelper.Log("AsyncDownloadFile 下载开始 url = " + url + ", savePath = " + savePath);
//System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();
//stopWatch.Start();
using (UnityWebRequest request = UnityWebRequest.Get(url))
{
yield return(request.SendWebRequest());
if (request.isHttpError || request.isNetworkError)
{
C_DebugHelper.LogWarning("request.isError" + request.isNetworkError);
}
else
{
byte[] bytes = request.downloadHandler.data;
if (callback != null)
{
callback(bytes);
}
C_DownloadMgr.CreatFile(url, savePath, bytes);
}
C_DebugHelper.Log("下载完成");
//stopWatch.Stop();
// C_DebugHelper.Log("下载完成,耗时: " + stopWatch.ElapsedMilliseconds);
}
}
IEnumerator MergeFile(string url, string savePath, Action callback)
{
while (true)
{
IsMerge = true;
for (int i = 0; i < ThreadNum; i++)
{
if (ThreadStatus[i] == false)
{
IsMerge = false;
yield return(0);
System.Threading.Thread.Sleep(100);
break;
}
}
if (IsMerge)
{
break;
}
}
byte[] bytes = new byte[bufferSize];
FileStream fs = new FileStream(C_DownloadMgr.StandardDownloadSavePath(url, savePath), FileMode.OpenOrCreate);
FileStream fsTemp = null;
for (int i = 0; i < ThreadNum; i++)
{
fsTemp = new FileStream(FileNames[i], FileMode.OpenOrCreate);
int readBytes;
while ((readBytes = fsTemp.Read(bytes, 0, bytes.Length)) > 0)
{
fs.Write(bytes, 0, readBytes);
}
fsTemp.Close();
}
fs.Close();
if (callback != null)
{
callback();
}
m_StopWatch.Stop();
C_DebugHelper.Log("下载完成,耗时: " + m_StopWatch.ElapsedMilliseconds);
yield return(null);
DeleteCacheFiles();
}
private const int m_nTimeOutWait = 5 * 1000; //超时等待时间
public void DownloadFile(string url, string savePath, Action callback, System.Threading.ThreadPriority threadPriority = System.Threading.ThreadPriority.Normal)
{
C_DebugHelper.Log("C_HttpDownloader DownloadFile url = " + url);
System.Diagnostics.Stopwatch stopWatch = new System.Diagnostics.Stopwatch();
Progress = 0;
DownloadFileLength = 0;
m_bIsStop = false;
m_Thread = new Thread(delegate()
{
stopWatch.Start();
//判断保存路径是否存在
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
string filePath = C_DownloadMgr.StandardDownloadSavePath(url, savePath);
//string fileName = C_DownloadMgr.StandardDownloadName(url);
//使用流操作文件
FileStream fs = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);
//获取文件现在的长度
DownloadFileLength = fs.Length;
//获取下载文件的总长度
long totalLength = C_DownloadMgr.GetLength(url);
//Debug.LogFormat("<color=red>文件:{0} 已下载{1}M，剩余{2}M</color>", fileName, fileLength / 1024 / 1024, (totalLength - fileLength) / 1024 / 1024);
//如果没下载完
if (DownloadFileLength < totalLength)
{
//断点续传核心，设置本地文件流的起始位置
fs.Seek(DownloadFileLength, SeekOrigin.Begin);
HttpWebRequest request = C_DownloadMgr.GetWebRequest(url);
request.ReadWriteTimeout = m_nReadWriteTimeOut;
request.Timeout = m_nTimeOutWait;
//断点续传核心，设置远程访问文件流的起始位置
request.AddRange((int)DownloadFileLength);
Stream stream = request.GetResponse().GetResponseStream();
byte[] buffer = new byte[4096];
//使用流读取内容到buffer中
//注意方法返回值代表读取的实际长度,并不是buffer有多大，stream就会读进去多少
int length = stream.Read(buffer, 0, buffer.Length);
while (length > 0)
{
//如果Unity客户端关闭，停止下载
if (m_bIsStop)
{
break;
}
//将内容再写入本地文件中
fs.Write(buffer, 0, length);
//计算进度
DownloadFileLength += length;
Progress = (float)DownloadFileLength / (float)totalLength;
//类似尾递归
length = stream.Read(buffer, 0, buffer.Length);
}
stream.Close();
stream.Dispose();
}
else
{
Progress = 1;
}
fs.Close();
stopWatch.Stop();
C_DebugHelper.Log("下载完成,耗时: " + stopWatch.ElapsedMilliseconds);
//如果下载完毕，执行回调
if (Progress == 1)
{
if (callback != null)
{
callback();
}
m_Thread.Abort();
}
});
//开启子线程
m_Thread.IsBackground = true;
m_Thread.Priority = threadPriority;
m_Thread.Start();
}
