private string GetFilePath(string rawUrl)
{
string filePath = rawUrl;
Confighelper config = new Confighelper();
foreach (string item in config.ImageStyleList)
{
if (rawUrl.EndsWith("_" + item))
{
filePath = rawUrl.Replace("_" + item, "");
}
}
return(filePath);
}
/// <summary>
///
/// </summary>
/// <param name="ImageStyle"></param>
/// <returns></returns>
private bool IsImageStyle(string ImageStyle)
{
bool b = false;
Confighelper config = new Confighelper();
b = config.ImageStyleList.Contains(ImageStyle);
//if (ImageStyle == "w100.jpg"
// || ImageStyle == "w200.jpg"
// || ImageStyle == "w300.jpg"
// || ImageStyle == "w400.jpg"
// || ImageStyle == "w500.jpg"
// || ImageStyle == "w600.jpg"
// || ImageStyle == "w700.jpg"
// || ImageStyle == "w800.jpg")
//{
// b = true;
//}
return(b);
}
private void OnBeginRequest(object sender, EventArgs e)
{
HttpApplication app = (HttpApplication)sender;
try
{
//CurrentExecutionFilePath 不会带有 ?后面的， RawUrl 带有?t=1
string requestUrl = app.Request.CurrentExecutionFilePath;
string path = requestUrl;//upload/10004/Picture/2017_07_05/20170305100315_66580.jpg_w400.jpg
if (!string.IsNullOrEmpty(path) && path.Length > 1)
{
Confighelper config = new Confighelper();
if (path.Contains(config.OrigDirectory))
{
//正则匹配格式
//http://img.cms.com/upload/10004/Picture/2017_07_05/20170305100315_66580.jpg_w400.jpg
if (!ImgRewriteUrl(app, path))
{
app.Response.StatusCode = 404;
app.Response.Write(Get404Html());
}
}
else
{
app.Response.StatusCode = 404;
app.Response.Write(Get404Html());
}
}
else
{
app.Response.StatusCode = 404;
app.Response.Write(Get404Html());
}
}
catch (Exception ex)
{
app.Response.StatusCode = 404;
app.Response.Write(Get404Html());
}
}
public void ProcessRequest(HttpContext context)
{
Response = context.Response;
try
{
int width = Convert.ToInt32(context.Request["width"]); //宽度
string filePath = context.Request["path"]; //相对路径 原图/upload/10004/Picture/2017_07_05//图1.jpg
string orig_Path = context.Server.MapPath(filePath); //原图绝对地址 C://项目1/upload/10004/Picture/2017_07_05//图1.jpg
#region 原图
if (System.IO.File.Exists(orig_Path))
{
if (width == 0)//原图
{
ResponseBinaryWrite(orig_Path);
}
else
{
//缩图换一个位置 方便清理
Confighelper config = new Confighelper();
//context.Server.MapPath一定在注意 如果是虚拟目录 C://项目2/upload/10004/Picture/2017_07_05//图1.jpg
string path = context.Server.MapPath(filePath.Replace(config.OrigDirectory, config.TempDirectory));
string tnImgPath = path + context.Request["ImageStyle"];
//创建文件夹
string dir = System.IO.Path.GetDirectoryName(tnImgPath);
if (!System.IO.Directory.Exists(dir))
{
System.IO.Directory.CreateDirectory(dir);
}
if (System.IO.File.Exists(tnImgPath))
{
ResponseBinaryWrite(tnImgPath);
}
else
{
#region 存在则 进行动态缩图
Image origImage = Image.FromFile(orig_Path);
Bitmap Tn_imgsrc = ImageHelper.GetThumbnailImage(origImage, ThumbnailImageType.Zoom, width, 0);
if (config.IsRealGenerate == 1)
{
Tn_imgsrc.Save(tnImgPath);
}
origImage.Dispose();
ResponseBinaryWrite(tnImgPath);
#endregion
}
}
}
else
{
Response.StatusCode = 404;
Response.Write(Get404Html());
}
#endregion
}
catch (Exception ex)
{
LogCommon.Logs.LogError(ex.ToString());
Response.StatusCode = 404;
Response.Write(Get404Html());
}
}