/// <summary>
/// 裁剪图片
/// </summary>
/// <param name="postedFile">HttpPostedFile控件</param>
/// <param name="savePath">保存路径</param>
/// <param name="imgWidth">图片宽度</param>
/// <param name="imgHeight">图片高度</param>
/// <param name="cMode">剪切类型</param>
/// <returns>返回上传信息</returns>
public UploadImageMessage FileCutSaveAs(HttpPostedFile postedFile, string savePath, int imgWidth, int imgHeight, CutType cMode)
{
UploadImageMessage _uploadImageMsg = new UploadImageMessage();
try
{
//获取上传文件的扩展名
string _fileEx = Path.GetExtension(postedFile.FileName);
if (!FileHelper.CheckValidExt(SetAllowFormat, _fileEx))
{
AddUploadImageMessage(_uploadImageMsg, 2);
return(_uploadImageMsg);
}
//获取上传文件的大小
double _fileSize = postedFile.ContentLength / 1024.0 / 1024.0;
if (_fileSize > SetAllowSize)
{
AddUploadImageMessage(_uploadImageMsg, 3);
return(_uploadImageMsg); //超过文件上传大小
}
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
string _newFileName = DateTime.Now.FormatDate(12),
_fName = "s" + _newFileName + _fileEx,
_fullPath = Path.Combine(savePath, _fName);
postedFile.SaveAs(_fullPath);
string _cfileName = DateTime.Now.FormatDate(12),
_cfName = _cfileName + _fileEx;
_uploadImageMsg.IsError = false;
_uploadImageMsg.FileName = _cfName;
string _cFullPath = Path.Combine(savePath, _cfName);
_uploadImageMsg.FilePath = _cFullPath;
_uploadImageMsg.WebPath = "/" + _cFullPath.Replace(HttpContext.Current.Server.MapPath("~/"), "").Replace("\\", "/");
ImageHelper.CreateSmallPhoto(_fullPath, imgWidth, imgHeight, _cFullPath, cMode);
//if (File.Exists(_fullPath))
//{
// File.Delete(_fullPath);
//}
if (_fileSize > 100)
{
ImageHelper.CompressPhoto(_cFullPath, 100);
}
}
catch (Exception ex)
{
AddUploadImageMessage(_uploadImageMsg, ex.Message);
}
return(_uploadImageMsg);
}
/// <summary>
/// 增加上传错误信息
/// </summary>
/// <param name="rm">UploadImageMessage</param>
/// <param name="message">错误信息</param>
private void AddUploadImageMessage(UploadImageMessage rm, string message)
{
rm.IsError = true;
rm.Message = message;
}
/// <summary>
/// 增加上传错误信息
/// </summary>
/// <param name="rm">UploadImageMessage</param>
/// <param name="code">错误代码</param>
private void AddUploadImageMessage(UploadImageMessage rm, int code)
{
rm.IsError = true;
rm.Message = GetCodeMessage(code);
}
/// <summary>
/// 通用图片上传类
/// </summary>
/// <param name="postedFile">HttpPostedFile控件</param>
/// <param name="savePath">保存路径</param>
/// <returns>返回上传信息</returns>
public UploadImageMessage FileSaveAs(HttpPostedFile postedFile, string savePath)
{
UploadImageMessage _uploadImageMsg = new UploadImageMessage();
try
{
if (string.IsNullOrEmpty(postedFile.FileName))
{
AddUploadImageMessage(_uploadImageMsg, 4);
return(_uploadImageMsg);
}
int _randomNumber = RandomHelper.NextNumber(1000, 9999);
string _fileName = DateTime.Now.FormatDate(12) + _randomNumber,
_fileEx = Path.GetExtension(postedFile.FileName);
if (!FileHelper.CheckValidExt(SetAllowFormat, _fileEx))
{
AddUploadImageMessage(_uploadImageMsg, 2);
return(_uploadImageMsg);
}
double _fileSize = postedFile.ContentLength / 1024.0 / 1024.0;
if (_fileSize > SetAllowSize)
{
AddUploadImageMessage(_uploadImageMsg, 3);
return(_uploadImageMsg);
}
if (!Directory.Exists(savePath))
{
Directory.CreateDirectory(savePath);
}
_uploadImageMsg.FileName = _fileName + _fileEx;
string _fullPath = savePath.Trim('\\') + "\\" + _uploadImageMsg.FileName;
_uploadImageMsg.WebPath = "/" + _fullPath.Replace(HttpContext.Current.Server.MapPath("~/"), "").Replace("\\", "/");
_uploadImageMsg.FilePath = _fullPath;
_uploadImageMsg.Size = _fileSize;
postedFile.SaveAs(_fullPath);
Bitmap _sourceBmp = new Bitmap(_fullPath);
int _sourceWidth = _sourceBmp.Width,
_sourceHeight = _sourceBmp.Height;
_sourceBmp.Dispose();
if (SetMinWidth > 0)
{
if (_sourceWidth < SetMinWidth)
{
AddUploadImageMessage(_uploadImageMsg, 7);
return(_uploadImageMsg);
}
}
if (SetLimitWidth && _sourceWidth > SetMaxWidth)
{
int _width = SetMaxWidth;
int _height = _width * _sourceHeight / _sourceWidth;
string _tempFile = savePath + Guid.NewGuid().ToString() + _fileEx;
File.Move(_fullPath, _tempFile);
ImageHelper.CreateSmallPhoto(_tempFile, _width, _height, _fullPath);
File.Delete(_tempFile);
}
if (_fileEx.ToLower() != ".gif")
{
ImageHelper.CompressPhoto(_fullPath, 100);
}
if (string.IsNullOrEmpty(SetSmallImgWidth))
{
_uploadImageMsg.Message = "上传成功,无缩略图";
return(_uploadImageMsg);
}
string[] _widthArray = SetSmallImgWidth.Split(',');
string[] _heightArray = SetSmallImgHeight.Split(',');
if (_widthArray.Length != _heightArray.Length)
{
AddUploadImageMessage(_uploadImageMsg, 6);
return(_uploadImageMsg);
}
for (int i = 0; i < _widthArray.Length; i++)
{
if (Convert.ToInt32(_widthArray[i]) <= 0 || Convert.ToInt32(_heightArray[i]) <= 0)
{
continue;
}
string _descFile = savePath.TrimEnd('\\') + '\\' + _fileName + "_" + i.ToString() + _fileEx;
//判断图片高宽是否大于生成高宽。否则用原图
if (_sourceWidth > Convert.ToInt32(_widthArray[i]))
{
if (SetCutImage)
{
ImageHelper.CreateSmallPhoto(_fullPath, Convert.ToInt32(_widthArray[i]), Convert.ToInt32(_heightArray[i]), _descFile);
}
else
{
ImageHelper.CreateSmallPhoto(_fullPath, Convert.ToInt32(_widthArray[i]), Convert.ToInt32(_heightArray[i]), _descFile, CutType.CutNo);
}
}
else
{
if (SetCutImage)
{
ImageHelper.CreateSmallPhoto(_fullPath, _sourceWidth, _sourceHeight, _descFile);
}
else
{
ImageHelper.CreateSmallPhoto(_fullPath, _sourceWidth, _sourceHeight, _descFile, CutType.CutNo);
}
}
}
if (!string.IsNullOrEmpty(SetPicWater))
{
ImageHelper.AttachPng(SetPicWater, _fullPath, SetWaterPosition.bottomRight);
}
if (!string.IsNullOrEmpty(SetWordWater))
{
ImageHelper.AttachText(SetWordWater, _fullPath);
}
}
catch (Exception ex)
{
AddUploadImageMessage(_uploadImageMsg, ex.Message);
}
return(_uploadImageMsg);
}