public void DefaultCatch(HttpContext Handler, UploadDetail Detail)
{
//Handler.Response.StatusCode = typeCode;
Handler.Response.ContentType = "Application/JSON";
Handler.Response.Write(Detail.toJSON("error", parent.Message));
Handler.Response.End();
}
/**
* 文件写入方法
* @param string savePath 服务器保存路径
* @param Stream reader 一个数据流对象，一般是HTTP POST中获取的文件流
* @param UploadDetail detail 上传信息对象，用于实时修改状态
*/
public void fileWriter(string savePath, Stream reader, UploadDetail detail)
{
lock (reader)
{
int bufferSize = Default.bufferSize;
FileStream fs = new FileStream(savePath, FileMode.Create);
byte[] buffer = new byte[bufferSize];
int len = reader.Read(buffer, 0, bufferSize);
while (len > 0 /*&& sofar < total*/)
{
fs.Write(buffer, 0, len);
Thread.Sleep(bufferTime);
detail.sofar += len;
len = reader.Read(buffer, 0, bufferSize);
}
detail.sofar = detail.total;
detail.isReady = false;
reader.Close();
fs.Close();
}
}
/**
* 文件写入方法
* @param string savePath 服务器保存路径
* @param Stream reader 一个数据流对象，一般是HTTP POST中获取的文件流
* @param UploadDetail detail 上传信息对象，用于实时修改状态
*/
public void fileWriter(string savePath, Stream reader, UploadDetail detail)
{
lock (reader)
{
int bufferSize = Default.bufferSize;
FileStream fs = new FileStream(savePath, FileMode.Create);
byte[] buffer = new byte[bufferSize];
int len = reader.Read(buffer, 0, bufferSize);
while (len > 0 /*&& sofar < total*/)
{
fs.Write(buffer, 0, len);
Thread.Sleep(bufferTime);
detail.sofar += len;
len = reader.Read(buffer, 0, bufferSize);
}
detail.sofar = detail.total;
detail.isReady = false;
reader.Close();
fs.Close();
}
}
public const int bufferTime = 20; // 20ms
// 处理请求主函数
public void ProcessRequest(HttpContext context)
{
string method = "";
UploadDetail detail = null;
try
{
detail = (UploadDetail)context.Session["UploadDetail"];
}
catch (Exception e)
{
detail = new UploadDetail();
context.Session["UploadDetail"] = detail;
detail = (UploadDetail)context.Session["UploadDetail"];
}
try // 总异常捕捉
{
// 过滤空请求
try
{
method = context.Request.QueryString["method"];
}
catch (Exception)
{
throw new UploadException("请求为空！" /*, 400*/);
}
switch (method)
{
case "doUpload":
HttpRequest request = context.Request;
HttpPostedFile fileHandler = null;
try
{
fileHandler = request.Files[0];
}
catch (Exception)
{
throw new UploadException("获取上传文件流失败！" /*, 411*/);
}
if (fileHandler.ContentLength <= 0)
{
throw new UploadException("没有选择文件！" /*, 411*/);
}
else if (!formatCheck(fileHandler))
{
throw new UploadException("文件格式不妥。请上传正常的文档！" /*, 406*/);
}
else if (request.ContentLength > maxUploadSize)
{
throw new UploadException("文件过大，上传失败！" /*, 413*/);
}
else if (detail.isReady)
{
throw new UploadException("正在进行另一上传进程，请稍后再试。" /*, 409*/);
}
else
{
detail.isReady = true;
detail.total = fileHandler.ContentLength;
string savePath = (new Random().Next(100000).ToString()) + System.IO.Path.GetExtension(fileHandler.FileName);
savePath = context.Server.MapPath("~/uploadTemp/" + savePath);
fileWriter(savePath, fileHandler.InputStream, detail);
}
break;
case "getStat":
if (!detail.isReady)
{
throw new UploadException("您还没有上传，不能获取进度！" /*, 403*/);
}
else
{
context.Response.ContentType = "Application/JSON";
context.Response.Write(detail.toJSON());
context.Response.End();
}
break;
default: break;
}
}
catch (UploadException e)
{
e.DefaultCatch(context, detail);
}
}
// 处理请求主函数
public void ProcessRequest(HttpContext context)
{
string method = "";
UploadDetail detail = null;
try
{
detail = (UploadDetail)context.Session["UploadDetail"];
}
catch (Exception e)
{
detail = new UploadDetail();
context.Session["UploadDetail"] = detail;
detail = (UploadDetail)context.Session["UploadDetail"];
}
try // 总异常捕捉
{
// 过滤空请求
try
{
method = context.Request.QueryString["method"];
}
catch (Exception)
{
throw new UploadException("请求为空！"/*, 400*/);
}
switch (method)
{
case "doUpload":
HttpRequest request = context.Request;
HttpPostedFile fileHandler = null;
try
{
fileHandler = request.Files[0];
}
catch(Exception)
{
throw new UploadException("获取上传文件流失败！"/*, 411*/);
}
if (fileHandler.ContentLength <= 0)
{
throw new UploadException("没有选择文件！"/*, 411*/);
}
else if (!formatCheck(fileHandler))
{
throw new UploadException("文件格式不妥。请上传正常的文档！"/*, 406*/);
}
else if (request.ContentLength > maxUploadSize)
{
throw new UploadException("文件过大，上传失败！"/*, 413*/);
}
else if (detail.isReady)
{
throw new UploadException("正在进行另一上传进程，请稍后再试。"/*, 409*/);
}
else
{
detail.isReady = true;
detail.total = fileHandler.ContentLength;
string savePath = (new Random().Next(100000).ToString()) + System.IO.Path.GetExtension(fileHandler.FileName);
savePath = context.Server.MapPath("~/uploadTemp/" + savePath);
fileWriter(savePath, fileHandler.InputStream, detail);
}
break;
case "getStat":
if (!detail.isReady)
throw new UploadException("您还没有上传，不能获取进度！"/*, 403*/);
else
{
context.Response.ContentType = "Application/JSON";
context.Response.Write(detail.toJSON());
context.Response.End();
}
break;
default: break;
}
}
catch (UploadException e)
{
e.DefaultCatch(context, detail);
}
}
public void DefaultCatch(HttpContext Handler, UploadDetail Detail)
{
//Handler.Response.StatusCode = typeCode;
Handler.Response.ContentType = "Application/JSON";
Handler.Response.Write(Detail.toJSON("error", parent.Message));
Handler.Response.End();
}