/// <summary>
/// 裁剪图片并保存
/// </summary>
public bool CropSaveAs(string fileName, string newFileName, int maxWidth, int maxHeight, int cropWidth, int cropHeight, int x, int y)
{
var fileExt = Utils.GetFileExt(fileName); //文件扩展名，不含“.”
if (!IsImage(fileExt))
{
return(false);
}
var newFileDir = Utils.GetMapPath(newFileName.Substring(0, newFileName.LastIndexOf(@"/", StringComparison.OrdinalIgnoreCase) + 1));
//检查是否有该路径，没有则创建
if (!Directory.Exists(newFileDir))
{
Directory.CreateDirectory(newFileDir);
}
try
{
var fileFullPath = Utils.GetMapPath(fileName);
var toFileFullPath = Utils.GetMapPath(newFileName);
return(ThumbnailUtil.MakeThumbnailImage(fileFullPath, toFileFullPath, 180, 180, cropWidth, cropHeight, x, y));
}
catch
{
return(false);
}
}
/// <summary>
/// 文件上传方法
/// </summary>
/// <param name="postedFile">文件流</param>
/// <param name="subFolder">子文件夹</param>
/// <param name="isThumbnail">是否生成缩略图</param>
/// <param name="isWater">是否打水印</param>
/// <param name="thumbnailMode">缩略图模式（HW\W\H\Cut）</param>
/// <returns>上传后文件信息</returns>
public string FileSaveAs(HttpPostedFile postedFile, string subFolder, bool isThumbnail, bool isWater, string thumbnailMode = "Cut")
{
try
{
var fileExt = Utils.GetFileExt(postedFile.FileName); //文件扩展名，不含“.”
var fileSize = postedFile.ContentLength; //获得文件大小，以字节为单位
var fileName = postedFile.FileName.Substring(postedFile.FileName.LastIndexOf(@"\", StringComparison.Ordinal) + 1); //取得原文件名
var newFileName = "original_" + Utils.GetRamCode() + "." + fileExt; //随机生成新的文件名
var newThumbnailFileName = newFileName.Replace("original_", "thumbnail_"); //随机生成缩略图文件名
var upLoadPath = GetUpLoadPath(subFolder); //上传目录相对路径
var fullUpLoadPath = Utils.GetMapPath(upLoadPath); //上传目录的物理路径
var newFilePath = upLoadPath + newFileName; //上传后的路径
var newThumbnailPath = upLoadPath + newThumbnailFileName; //上传后的缩略图路径
//检查文件扩展名是否合法
if (!CheckFileExt(fileExt))
{
return("{\"status\": 0, \"msg\": \"不允许上传" + fileExt + "类型的文件！\"}");
}
//检查文件大小是否合法
if (!CheckFileSize(fileExt, fileSize))
{
return("{\"status\": 0, \"msg\": \"文件超过限制的大小！\"}");
}
//检查上传的物理路径是否存在，不存在则创建
if (!Directory.Exists(fullUpLoadPath))
{
Directory.CreateDirectory(fullUpLoadPath);
}
//保存文件
postedFile.SaveAs(fullUpLoadPath + newFileName);
//如果是图片，检查图片是否超出最大尺寸，是则裁剪
if (IsImage(fileExt) && (_imgmaxheight > 0 || _imgmaxwidth > 0))
{
ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newFileName,
_imgmaxwidth, _imgmaxheight);
}
//如果是图片，检查是否需要生成缩略图，是则生成
//LogUtil.WriteLog(fileExt);
//LogUtil.WriteLog(IsImage(fileExt).ToString());
//LogUtil.WriteLog(isThumbnail.ToString());
//LogUtil.WriteLog(_thumbnailwidth.ToString());
//LogUtil.WriteLog(_thumbnailheight.ToString());
if (IsImage(fileExt) && isThumbnail && _thumbnailwidth > 0 && _thumbnailheight > 0)
{
//LogUtil.WriteLog("MakeThumbnailImage");
ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName, _thumbnailwidth, _thumbnailheight, thumbnailMode);
//生成固定尺寸96的图标小图片icon
ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "icon_"), 96, 96, thumbnailMode);
//生成固定尺寸180的小图片
ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "small_"), 200, 200, thumbnailMode);
//生成固定尺寸300的小图片
ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "middle_"), 350, 350, thumbnailMode);
//生成固定尺寸700的大图片
ThumbnailUtil.MakeThumbnailImage(fullUpLoadPath + newFileName, fullUpLoadPath + newThumbnailFileName.Replace("thumbnail_", "large_"), 700, 700, thumbnailMode);
}
else
{
newThumbnailPath = newFilePath; //不生成缩略图则返回原图
}
//如果是图片，检查是否需要打水印
if (IsWaterMark(fileExt) && isWater)
{
switch (_watermarktype)
{
case 1:
WatermarkUtil.AddImageSignText(newFilePath, newFilePath,
_watermarktext, _watermarkposition,
_watermarkimgquality, _watermarkfont, _watermarkfontsize);
break;
case 2:
WatermarkUtil.AddImageSignPic(newFilePath, newFilePath,
_watermarkpic, _watermarkposition,
_watermarkimgquality, _watermarktransparency);
break;
}
}
//处理完毕，返回JOSN格式的文件信息
return("{\"status\": 1, \"msg\": \"上传文件成功！\", \"name\": \""
+ fileName + "\", \"path\": \"" + newFilePath + "\", \"thumb\": \""
+ newThumbnailPath + "\", \"size\": " + fileSize + ", \"ext\": \"" + fileExt + "\"}");
}
catch
{
return("{\"status\": 0, \"msg\": \"上传过程中发生意外错误！\", \"name\": \""
+ "" + "\", \"path\": \"" + "" + "\", \"thumb\": \""
+ "" + "\", \"size\": " + 0 + ", \"ext\": \"" + "" + "\"}");
}
}
/// <summary>
/// 把经过base64编码的字符串保存为文件
/// </summary>
/// <param name="base64String">经base64加码后的字符串</param>
/// <param name="uploadedFileName">上传后的文件名</param>
/// <param name="subFolder">子目录</param>
/// <param name="isThumbnail">是否生成缩略图</param>
/// <param name="thumbnailMode"></param>
/// <returns>保存文件是否成功 </returns>
public string Base64SaveAs(string base64String, out string uploadedFileName, string subFolder = @"ItemPhoto", bool isThumbnail = true, string thumbnailMode = "W")
{
if (string.IsNullOrEmpty(thumbnailMode))
{
thumbnailMode = "W";
}
var fileExt = "jpeg";
if (base64String.StartsWith("data:image/png"))
{
fileExt = "png";
}
if (base64String.StartsWith("data:image/jpeg"))
{
fileExt = "jpeg";
}
var newFileName = Utils.GetRamCode() + "_original." + fileExt; //随机生成新的文件名
var uploadPath = GetUpLoadPath(subFolder); //上传目录相对路径
var fullPhysicalUpLoadPath = Utils.GetMapPath(uploadPath); //上传目录的物理路径
var newFilePath = uploadPath + newFileName; //上传后的路径
var newPhysicalFilePath = Utils.GetMapPath(uploadPath + newFileName); //上传后的物理路径
var newThumbnailFileName = newFileName.Replace("original", "thumbnail"); //随机生成缩略图文件名
var newThumbnailPath = uploadPath + newThumbnailFileName; //上传后的缩略图路径
var newPhysicalThumbnailPath = Utils.GetMapPath(uploadPath + newThumbnailFileName); //上传后的缩略图物理路径
var newIconPath = uploadPath + newThumbnailFileName.Replace("thumbnail", "icon"); //上传后的缩略图路径
var newPhysicalIconPath = Utils.GetMapPath(uploadPath + newThumbnailFileName.Replace("thumbnail", "icon")); //上传后的缩略图物理路径
var newMiddlePath = uploadPath + newThumbnailFileName.Replace("thumbnail", "middle"); //上传后的缩略图路径
var newPhysicalMiddlePath = Utils.GetMapPath(uploadPath + newThumbnailFileName.Replace("thumbnail", "middle")); //上传后的缩略图物理路径
var newLargePath = uploadPath + newThumbnailFileName.Replace("thumbnail", "large"); //上传后的缩略图路径
var newPhysicalLargePath = Utils.GetMapPath(uploadPath + newThumbnailFileName.Replace("thumbnail", "large")); //上传后的缩略图物理路径
uploadedFileName = newFilePath;
//检查上传的物理路径是否存在，不存在则创建
if (!Directory.Exists(fullPhysicalUpLoadPath))
{
Directory.CreateDirectory(fullPhysicalUpLoadPath);
}
int fileSize = 0;
//保存文件
var fs = new FileStream(newPhysicalFilePath, FileMode.Create);
var bw = new BinaryWriter(fs);
if (!string.IsNullOrEmpty(base64String) && File.Exists(newPhysicalFilePath))
{
try
{
bw.Write(Convert.FromBase64String(base64String));
fileSize = int.Parse((fs.Length / 1024).ToString());
}
catch
{
return("{\"status\": 0, \"msg\": \"上传过程中发生意外错误！\"}");
}
finally
{
bw.Close();
bw.Dispose();
fs.Close();
}
//处理完毕，返回JOSN格式的文件信息
//如果是图片，检查是否需要生成缩略图，是则生成
if (IsImage(fileExt) && isThumbnail && _thumbnailwidth > 0 && _thumbnailheight > 0)
{
//生成系统默认尺寸的小图
ThumbnailUtil.MakeThumbnailImage(newPhysicalFilePath, newPhysicalThumbnailPath, _thumbnailwidth, _thumbnailheight, thumbnailMode);
//生成固定尺寸96的小图片
ThumbnailUtil.MakeThumbnailImage(newPhysicalFilePath, newPhysicalIconPath, 96, 96, thumbnailMode);
//生成固定尺寸300的小图片
ThumbnailUtil.MakeThumbnailImage(newPhysicalFilePath, newPhysicalMiddlePath, 300, 300, thumbnailMode);
//生成固定尺寸700的大图片
ThumbnailUtil.MakeThumbnailImage(newPhysicalFilePath, newPhysicalLargePath, 700, 700, thumbnailMode);
}
else
{
newThumbnailPath = newFilePath; //不生成缩略图则返回原图
newIconPath = newFilePath; //不生成缩略图则返回原图
newMiddlePath = newFilePath; //不生成缩略图则返回原图
newLargePath = newFilePath; //不生成缩略图则返回原图
}
return("{\"status\": 1, \"msg\": \"上传文件成功！\", \"name\": \""
+ newFileName + "\", \"path\": \"" + newFilePath + "\", \"thumbnail\": \""
+ newThumbnailPath + "\", \"icon\": \""
+ newIconPath + "\", \"middle\": \""
+ newMiddlePath + "\", \"large\": \""
+ newLargePath + "\", \"size\": " + fileSize + ", \"ext\": \"" + fileExt + "\"}");
}
return("{\"status\": 0, \"msg\": \"上传过程中发生意外错误！\"}");
}