/// <summary>
/// 根据UpLoadImageInfo.Type返回文件名
/// </summary>
/// <param name="upLoadImage">UpLoadImageInfo</param>
/// <param name="extName">后缀名</param>
/// <param name="ibyte">没有名字的情况下</param>
/// <param name="filePath">ref 文件路径</param>
/// <returns>图片名</returns>
private string FileNameStrategy(UpLoadImageInfo upLoadImageInfo, string suffix, byte[] ibyte, ref string filePath)
{
string imageFileName = string.Empty;
string index = string.Empty;
if (upLoadImageInfo.Index != 0)
{
index = upLoadImageInfo.Index.ToString();
}
if (string.IsNullOrEmpty(upLoadImageInfo.FileName) == false && upLoadImageInfo.FileName != "")
{
//已经有文件名
if (upLoadImageInfo.FileName.IndexOf(".") != -1)
{
//default.jpg完整名
string[] splitFileName = upLoadImageInfo.FileName.Split('.');
imageFileName = string.Format("{0}{1}{2}.{3}", splitFileName[0], suffix, index, splitFileName[1]);
}
else
{
//例：default无完整名
imageFileName = string.Format("{0}{1}{2}.{3}", upLoadImageInfo.FileName, suffix, index, upLoadImageInfo.ExtName);
}
}
else
{
//没有文件名时
MD5 md5 = new MD5CryptoServiceProvider();
byte[] fileKey = md5.ComputeHash(ibyte);
string md5Ibyte = Convert.ToBase64String(fileKey);
md5Ibyte = md5Ibyte.Replace('/', 'f');
md5Ibyte = md5Ibyte.Replace('@', 'w');
md5Ibyte = md5Ibyte.Replace('+', 'y');
md5Ibyte = md5Ibyte.Replace(' ', 'j');
md5Ibyte = md5Ibyte.Replace('.', 'x');
md5Ibyte = md5Ibyte.Replace('\\', 'd');
md5Ibyte = md5Ibyte.Substring(0, 19);
filePath = md5Ibyte.Substring(0, 4) + "/" +
md5Ibyte.Substring(4, 3) + "/" +
md5Ibyte.Substring(7, 4);
imageFileName = md5Ibyte.Substring(11) + suffix + "." + upLoadImageInfo.ExtName;
}
return(imageFileName);
}
/// <summary>
/// 上传图片 图片作byse64字符串流传递
/// </summary>
public JsonResultObject UpLoadImage()
{
myLog.InfoFormat("开始");
var result = new JsonResultObject();
UpLoadImageInfo upLoadImageInfo = new UpLoadImageInfo();
upLoadImageInfo.ImageByte = HttpContext.Current.Request["imageByte"];
upLoadImageInfo.SourceType = HttpContext.Current.Request["sourceType"];
upLoadImageInfo.ExtName = HttpContext.Current.Request["extName"];
upLoadImageInfo.Type = HttpContext.Current.Request["type"];
upLoadImageInfo.FilePath = HttpContext.Current.Request["filePath"];
upLoadImageInfo.FileName = HttpContext.Current.Request["fileName"];
upLoadImageInfo.FilePath = upLoadImageInfo.FilePath == ""? null :upLoadImageInfo.FilePath;
upLoadImageInfo.FileName = upLoadImageInfo.FileName == "" ? null : upLoadImageInfo.FileName;
string index = HttpContext.Current.Request["index"];
if (index != null && index != "" && index != "0")
{
upLoadImageInfo.Index = int.Parse(index);
}
if (upLoadImageInfo.Type == null || upLoadImageInfo.Type == "")
{
upLoadImageInfo.Type = "other";
}
if (string.IsNullOrEmpty(upLoadImageInfo.ImageByte) == false && upLoadImageInfo.ImageByte != "")
{
try
{
byte[] ibyte = ImageConvertUtil.FromBase64ToByte(upLoadImageInfo.ImageByte);
result = ReturnUpLoadStatus(ibyte, upLoadImageInfo); //存放图片，并返回数据状态
}
catch (Exception ex)
{
result.msg = "数据添加异常！";
myLog.InfoFormat("图片上传异常 " + ex.Message);
}
}
else
{
result.status = false;
result.msg = "上传失败,没有解析图片！";
}
return(result);
}
private JsonResultObject ReturnUpLoadStatus(byte[] ibyte, UpLoadImageInfo upLoadImage)
{
var result = new JsonResultObject();
//result.data的返回路径集合
List <object> allOutPath = new List <object>();
//允许上传图片集合后缀
string rules = string.Empty;
ImageConfigInfo imageConfigInfo = GetImageConfigInfo(ref rules, upLoadImage.Type);
if (IsValidPic(ibyte) == false)
{
result.msg = "您上传的不是图片类型";
result.status = false;
return(result);
}
else if (rules.IndexOf(upLoadImage.ExtName) == -1 || rules.Contains(upLoadImage.ExtName) == false)
{
result.msg = "您上传的不是图片类型";
result.status = false;
return(result);
}
//二进制图片流会比原有的图片大130%-150%
double maxSize = imageConfigInfo.Size * 1024 * 1.5;
if (upLoadImage.ImageByte.Length > maxSize)
{
result.msg = "图片已超过实际大小：" + imageConfigInfo.Size + "KB";
result.status = false;
return(result);
}
string filePath = string.Empty; //图片路径
string savePath = string.Empty; //图片保存文件夹位置
//创建默认原图
imageConfigInfo.SaveConfig.Add(new SaveConfigInfo {
Key = "Origin", Size = -1, Suffix = "_O"
});
string defaultImagePath = string.Empty;
for (int i = imageConfigInfo.SaveConfig.Count - 1; i >= 0; i--)
{
//图片名称
string imageFileName = FileNameStrategy(upLoadImage, imageConfigInfo.SaveConfig[i].Suffix, ibyte, ref filePath);
//创建图片图片目录,判定是否有子文件夹
if (upLoadImage.FilePath == null && upLoadImage.FileName == null)
{
savePath = imageConfigInfo.SavePath + imageConfigInfo.FileName + "/" + filePath;
}
else
{
savePath = imageConfigInfo.SavePath + imageConfigInfo.FileName + "/" + upLoadImage.FilePath;
}
if (imageConfigInfo.SaveConfig[i].Suffix == "_L")
{
if (upLoadImage.FilePath == null && upLoadImage.FileName == null)
{
allOutPath.Add(new { ImagePath = filePath + "/" + imageFileName, Url = imageConfigInfo.URL });
}
else
{
allOutPath.Add(new { ImagePath = upLoadImage.FilePath + "/" + imageFileName, Url = imageConfigInfo.URL });
}
}
Directory.CreateDirectory(savePath);
bool isOrigin;
if (imageConfigInfo.SaveConfig[i].Size == -1 || imageConfigInfo.SaveConfig[i].Key == "Origin")
{
isOrigin = true;
defaultImagePath = savePath + "/" + imageFileName;
SaveImage(savePath
, imageFileName
, ibyte
, isOrigin
, imageConfigInfo.SaveConfig[i].Size
, imageConfigInfo.SaveConfig[i].Size
, upLoadImage.ExtName);
}
else
{
isOrigin = false;
string otherImagePath = savePath + "/" + imageFileName;
SaveImage(otherImagePath, ibyte, upLoadImage.ExtName, imageConfigInfo.SaveConfig[i].Size, false);
}
}
result.data = allOutPath;
result.status = true;
result.msg = "图片已上传完成！";
return(result);
}
