public static FileUploader ReceiveImg(byte[] bytes)
{
bool image = true;
var filename = "";
var filetransfer = false;
try
{
DateTime now = DateTime.Now.Date;
string currentType = "";
#region 图片需要特殊处理
if (image)//判断是否为图片
{
#region 加载成图片，并可图片进行缩放处理
try
{
using (var ms = new System.IO.MemoryStream(bytes, 0, bytes.Length)) //二进制
using (var sImage = System.Drawing.Image.FromStream(ms))
{
ImageFormat format = sImage.RawFormat;//
if (format.Equals(ImageFormat.Jpeg))
{
currentType = ".jpg";
}
if (format.Equals(ImageFormat.Png))
{
currentType = ".png";
}
if (format.Equals(ImageFormat.Bmp))
{
currentType = ".bmp";
}
if (format.Equals(ImageFormat.Gif))
{
currentType = ".gif";
}
}
}
catch
{
return(new FileUploader()
{
Success = false, Message = "文件类型不符合要求。"
});
}
#endregion
}
#endregion
var t = "";
if (string.IsNullOrEmpty(filename))
{
string locator = "/" + "upload" + "/" + (image ? "images" : "files") + "/" + now.Year + "/" + now.Month.ToString("00") + "/" + now.Day.ToString("00") + "/";
filename = (locator + DateTime.Now.ToString("HHmmssfff") + currentType);
if (!image && currentType.ToLower() == ".pdf")//如果是pdf，单独上传一个
{
locator = "/" + "upload" + "/pdf/" + now.Year + "/" + now.Month.ToString("00") + "/" + now.Day.ToString("00") + "/";
filename = (locator + DateTime.Now.ToString("HHmmssfff") + currentType);
}
}
else
{
filename = System.Web.HttpUtility.UrlDecode(filename, Encoding.UTF8);
}
var success = SaveAs(filename, bytes);
if (success && !filetransfer)//设置一个标志，为了防止重复调用
{
string[] transfers = (System.Configuration.ConfigurationManager.AppSettings["FileUploader.Transfer"] ?? "").Split(new string[] { "|" }, StringSplitOptions.RemoveEmptyEntries);
foreach (var transfer in transfers)
{
if (!string.IsNullOrEmpty(transfer))
{
FileUploader.Transfer(transfer + "?action=uploadimage", bytes, filename);
}
}
}
var server = System.Configuration.ConfigurationManager.AppSettings["FileUploader.Locator"];
if (string.IsNullOrWhiteSpace(server))
{
server = "/";
}
//locator = locator.TrimEnd("/");
return(new FileUploader()
{
Success = success, Message = "", Locator = server.TrimEnd('/') + "/" + filename.TrimStart('/'), Original = "", FileType = currentType
});
}
catch (Exception ex)
{
return(new FileUploader()
{
Success = false, Message = ex.Message.ToString()
});
}
}
public static FileUploader Proxy(string remote)
{
//参数初始化
var filetype = WebHelper.Form("filetype").ToInt(1); //文件上传模式，可以上传的文件类型
var filesize = WebHelper.Form("filesize").ToInt(20 * 1024); //最大允许上传的文件大小
var fileexts = WebHelper.Form("fileexts").ToLower(); //可以文件类型
var imgzoom = WebHelper.Form("zoom").ToArray(":"); //文件裁减//w:h:0
var files = System.Web.HttpContext.Current.Request.Files;
filesize = filesize < 0 ? 20 * 1024 : filesize;
filesize = filesize > 20 * 1024 ? 20 * 1024 : filesize;
#region 文件格式处理
HashSet <string> allowtypes = new HashSet <string>()
{
".rar", ".zip", ".doc", ".docx", ".pdf", ".txt", ".swf", ".xls", ".xlsx"
};
if (filetype == 1)
{
allowtypes = new HashSet <string>()
{
".gif", ".png", ".jpg", ".jpeg", ".bmp"
};
filesize = filesize < 0 ? 100 : filesize;
filesize = filesize > 100 ? 100 : filesize;
}
if (!string.IsNullOrEmpty(fileexts) && fileexts != "")
{
string[] splits = fileexts.Split(new string[] { "|" }, StringSplitOptions.RemoveEmptyEntries);
HashSet <string> types = new HashSet <string>();
foreach (var s in splits)
{
if (allowtypes.Contains(s))
{
types.Add(s);
}
}
allowtypes.Clear();
allowtypes = types;
}
#endregion
#region 文件预处理
if (files == null)
{
return(new FileUploader()
{
Success = false, Message = "未找到有效的上传文件！"
});
}
var uploadFile = files[0];
string currentType = FileUploader.GetFileExt(uploadFile.FileName); //获取文件扩展名
if (!allowtypes.Contains(currentType)) //检查当前文件格式是否符合要求
{
return(new FileUploader()
{
Success = false, Message = "文件类型不符合要求。"
});
}
if (filesize > 0 && (uploadFile.ContentLength == 0 || uploadFile.ContentLength >= (filesize * 1024)))//检查文件大小
{
return(new FileUploader()
{
Success = false, Message = "文件大小不符合要求。"
});
}
#endregion
//提交数据
#region 通过http的方式将数据转交给另一个接口
try
{
//remote
var request = (HttpWebRequest)WebRequest.Create(remote);
using (var ms = new MemoryStream())
{
// 边界符
var boundary = "---------------" + DateTime.Now.Ticks.ToString("x");
// 边界符
var beginBoundary = Encoding.ASCII.GetBytes("--" + boundary + "\r\n");
// 最后的结束符
var endBoundary = Encoding.ASCII.GetBytes("--" + boundary + "--\r\n");
// 设置属性
request.Method = "POST";
request.Timeout = 30 * 1000;
request.ContentType = "multipart/form-data; boundary=" + boundary;
// 写入文件
string filePartHeader =
"Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n" +
"Content-Type: application/octet-stream\r\n\r\n";
var header = string.Format(filePartHeader, "http.post.file", uploadFile.FileName);
var headerbytes = Encoding.UTF8.GetBytes(header);
ms.Write(beginBoundary, 0, beginBoundary.Length); //写入分界
ms.Write(headerbytes, 0, headerbytes.Length); //写入头
byte[] bytes = new byte[uploadFile.ContentLength];
using (System.IO.Stream fs = (System.IO.Stream)uploadFile.InputStream)
{
fs.Read(bytes, 0, uploadFile.ContentLength);
fs.Close();
}
ms.Write(bytes, 0, bytes.Length);//写入内容
// 写入字符串的Key
var stringKeyHeader = "\r\n--" + boundary +
"\r\nContent-Disposition: form-data; name=\"{0}\"" +
"\r\n\r\n{1}\r\n";
var values = new Dictionary <string, string>();
values["filetype"] = filetype.ToString();
values["filesize"] = filesize.ToString();
if (string.IsNullOrEmpty(fileexts))
{
values["fileexts"] = fileexts.ToString();
}
if (imgzoom != null && imgzoom.Length > 0)
{
values["zoom"] = string.Join(":", Array.ConvertAll(imgzoom, i => i.ToString()));
}
foreach (var e in values)
{
header = string.Format(stringKeyHeader, e.Key, System.Web.HttpUtility.UrlEncode(e.Value, Encoding.UTF8).Replace("+", "%20"));
bytes = Encoding.UTF8.GetBytes(header);
ms.Write(bytes, 0, bytes.Length);//写入内容
}
//提交参数
foreach (var e in System.Web.HttpContext.Current.Request.Form)
{
}
// 写入最后的结束边界符
ms.Write(endBoundary, 0, endBoundary.Length);
request.ContentLength = ms.Length;
ms.Position = 0;
using (var requestStream = request.GetRequestStream())
{
var bs = new byte[ms.Length];
ms.Read(bs, 0, bs.Length);
ms.Close();
ms.Dispose();
requestStream.Write(bs, 0, bs.Length);
}
//
//
string result = string.Empty;
using (var response = (HttpWebResponse)request.GetResponse())
using (var streamReceive = response.GetResponseStream())
using (var streamReader = new StreamReader(streamReceive, System.Text.Encoding.UTF8))
{
result = streamReader.ReadToEnd();
}
if (!string.IsNullOrEmpty(result))
{
//将数据解析成json
System.Web.Script.Serialization.JavaScriptSerializer serializer = new System.Web.Script.Serialization.JavaScriptSerializer();
var o = serializer.DeserializeObject(result) as Dictionary <string, object>;
if (o == null)
{
return(new FileUploader()
{
Success = false, Message = "上传出错！！"
});
}
return(new FileUploader()
{
Success = o.ContainsKey("error") ? (int)o["error"] == 0 : false,
Message = o.ContainsKey("message") ? o["message"].ToString() : string.Empty,
Locator = o.ContainsKey("url") ? o["url"].ToString() : string.Empty
});
}
}
}
catch (Exception ex)
{
return(new FileUploader()
{
Success = false, Message = ex.Message.ToString()
});
}
return(new FileUploader()
{
Success = false, Message = "未知错误！！"
});
#endregion
}
/// <summary>
/// 保存文件到本地
/// </summary>
/// <param name="files"></param>
/// <param name="pathbase"></param>
/// <param name="filetype"></param>
/// <param name="size"></param>
/// <param name="onProcess"></param>
/// <returns></returns>
public static FileUploader Receive(string action = "uploadimage", int filesize = 500, string fileexts = null, int[] imgzoom = null)
{
bool image = action.ToLower() == "uploadimage";
//如果数据是转过来的
var filename = WebHelper.Form("filename");
var files = System.Web.HttpContext.Current.Request.Files;
var filetransfer = WebHelper.Form("filetransfer").ToLower() == "true";
//默认为50M
filesize = filesize < 0 ? 50 * 1024 : filesize;
filesize = filesize > 50 * 1024 ? 50 * 1024 : filesize;
#region 文件格式处理
HashSet <string> allowtypes = new HashSet <string>()
{
".rar", ".zip", ".doc", ".docx", ".pdf", ".txt", ".swf", ".xls", ".xlsx"
};
if (image)
{
allowtypes = new HashSet <string>()
{
".gif", ".png", ".jpg", ".jpeg", ".bmp"
};
filesize = filesize < 0 ? 1024 : filesize;
filesize = filesize > 1024 ? 1024 : filesize;
}
if (!string.IsNullOrEmpty(fileexts) && fileexts != "" && fileexts.StartsWith("."))
{
string[] splits = fileexts.Split(new string[] { "|" }, StringSplitOptions.RemoveEmptyEntries);
HashSet <string> types = new HashSet <string>();
foreach (var s in splits)
{
if (allowtypes.Contains(s))
{
types.Add(s);
}
}
allowtypes.Clear();
allowtypes = types;
}
#endregion
#region 文件检查
if (files == null || files.Count == 0 || files[0].InputStream == null || files[0].InputStream.Length == 0)
{
return(new FileUploader()
{
Success = false, Message = "未找到有效的上传文件！"
});
}
string currentType = FileUploader.GetFileExt(files[0].FileName); //获取文件扩展名
if (!allowtypes.Contains(currentType)) //检查当前文件格式是否符合要求
{
return(new FileUploader()
{
Success = false, Message = "文件类型不符合要求。"
});
}
if (filesize > 0 && files[0].ContentLength >= (filesize * 1024))//检查文件大小
{
return(new FileUploader()
{
Success = false, Message = "文件大小不符合要求。"
});
}
#endregion
try
{
var uploadFile = files[0]; //获取当前文件
string originalName = uploadFile.FileName; //获取当前的文件名
DateTime now = DateTime.Now.Date;
//保存的路径
byte[] bytes = new byte[uploadFile.ContentLength];
using (System.IO.Stream fs = (System.IO.Stream)uploadFile.InputStream)
{
fs.Read(bytes, 0, uploadFile.ContentLength);
fs.Close();
}
int w = 0;
int h = 0;
#region 图片需要特殊处理
if (image)//判断是否为图片
{
#region 加载成图片，并可图片进行缩放处理
try
{
using (var ms = new System.IO.MemoryStream(bytes, 0, bytes.Length)) //二进制
using (var sImage = System.Drawing.Image.FromStream(ms))
{
w = sImage.Width;
h = sImage.Height;
ImageFormat format = sImage.RawFormat;//
if (format.Equals(ImageFormat.Jpeg))
{
currentType = ".jpg";
}
if (format.Equals(ImageFormat.Png))
{
currentType = ".png";
}
if (format.Equals(ImageFormat.Bmp))
{
currentType = ".bmp";
}
if (format.Equals(ImageFormat.Gif))
{
currentType = ".gif";
}
//如果需要进行处理，则进行相应的操作
if (imgzoom.Length > 0 && (imgzoom[0] > 0 || imgzoom[1] > 0))
{
if (!Photos.Zoom(ref bytes, sImage.Width, sImage.Height, imgzoom[0], imgzoom[1], ref currentType))
{
//文件缩放失败
}
}
if (!allowtypes.Contains(currentType))//检查当前文件格式是否符合要求
{
return(new FileUploader()
{
Success = false, Message = "文件类型不符合要求"
});
}
}
}
catch
{
return(new FileUploader()
{
Success = false, Message = "文件类型不符合要求。"
});
}
#endregion
}
#endregion
var t = "";
if (string.IsNullOrEmpty(filename))
{
string locator = "/" + "upload" + "/" + (image ? "images" : "files") + "/" + now.Year + "/" + now.Month.ToString("00") + "/" + now.Day.ToString("00") + "/";
filename = (locator + DateTime.Now.ToString("HHmmssfff") + currentType);
if (!image && currentType.ToLower() == ".pdf")//如果是pdf，单独上传一个
{
locator = "/" + "upload" + "/pdf/" + now.Year + "/" + now.Month.ToString("00") + "/" + now.Day.ToString("00") + "/";
filename = (locator + DateTime.Now.ToString("HHmmssfff") + currentType);
}
}
else
{
filename = System.Web.HttpUtility.UrlDecode(filename, Encoding.UTF8);
}
var success = SaveAs(filename, bytes);
if (success && !filetransfer)//设置一个标志，为了防止重复调用
{
string[] transfers = (System.Configuration.ConfigurationManager.AppSettings["FileUploader.Transfer"] ?? "").Split(new string[] { "|" }, StringSplitOptions.RemoveEmptyEntries);
foreach (var transfer in transfers)
{
if (!string.IsNullOrEmpty(transfer))
{
FileUploader.Transfer(transfer + "?action=" + action, bytes, filename);
}
}
}
var server = System.Configuration.ConfigurationManager.AppSettings["FileUploader.Locator"];
if (string.IsNullOrWhiteSpace(server))
{
server = "/";
}
//locator = locator.TrimEnd("/");
return(new FileUploader()
{
Width = w, Height = h, Success = success, Message = "", Locator = server.TrimEnd('/') + "/" + filename.TrimStart('/'), Original = originalName, FileType = currentType
});
}
catch (Exception ex)
{
return(new FileUploader()
{
Success = false, Message = ex.Message.ToString()
});
}
}